Dissertations / Theses: 'The Hut Central Valley'

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Walters, Eric L. "Habitat and space use of the Red-naped Sapsucker, Sphyrapicus nuchalis, in the Hat Creek valley, south-central British Columbia." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0014/MQ32698.pdf.

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Marquez, Lizbeth. "Central Valley Promise| Creating a K-16 College and Career Pipeline for Central Valley Students." Thesis, California State University, Fresno, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=13424463.

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Degree completion has been a topic of debate in higher education institutions. Although efforts have been made to raise the rate of completion, the number of students completing college remains low. Low rates may lead to wasted time and money as students often take unnecessary coursework as a result of not having a well-developed plan for completion. To combat this problem, programs have been implemented at community colleges that are designed to meet student needs, develop tailored educational plans, and help students set goals. One such program is the Central Valley Promise (CVP) program, which offers a solution that could meet the specific needs students of the Central Valley of California. Upon meeting the entrance requirements, students are eligible to receive free tuition for one semester and the promise of support to completion for all students. Because CVP has the potential to affect many incoming students, it was important to examine whether it is achieving its goal. This study sought to gain understanding of student transition and career readiness. A survey was given to 402 CVP students during their first semester of college. A comparison group of 112 students also received the survey. All participants were incoming community college freshmen. Also, observations were conducted during three CVP events. Findings included an increased satisfaction and confidence level in academic performance, social life, and choosing a college major among CVP students. Recommendations include continued support for students, adding a mentorship component, and hiring faculty to exclusively work with CVP students.

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Peterson, Kaj. "Agriculture and Groundwater Overdraft in California’s Central Valley : Lantbruk och grundvatten-övertrassering i Kaliforniens Central Valley region." Thesis, KTH, Industriell ekologi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-189046.

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Agriculture in California’s Central Valley is important to the US economy and food supply. High reliance on groundwater (GW) for irrigation has led to GW overdraft. Among the consequences is that the GW level is lowered, increasing the energy requirements and cost of GW extraction. This is assessed in a case study of the Turlock subbasin, as well as a simplified Cost-Benefit Analysis (CBA), in which the profitability of strategies for avoiding groundwater overdraft is compared to Business As Usual (BAU) for the years 2001 and 2050, using a high and low energy cost estimate. Climate projections are applied to the year 2050. An overdraft of 95 million m3 in 2001 is found to lower the GW level by 19.3cm, leading to an increase in energy requirements and cost of GW extraction of 0.320 Wh/m3 and 0.416 cents/m3, respectively. A reduction in production was found to be less profitable than BAU in all cases except for the year 2050, using high cost estimates. Crop replacement was found to be profitable in all cases. The use of desalinated water was found to be unprofitable in all cases. It is concluded that climate change and irrigation costs will have one or more of the following outcomes: decreased production, a shift towards higher $/m3 crops, and/or increased food prices.
Lantbruk I Kaliforniens Central Valley region är viktig för den Amerikanska ekonomin och livsmedelsförsörjningen. Stort beroende av grundvatten till konstbevattning har lett till grundvatten-övertrassering. Bland dess konsekvenser är att grundvatten nivån sjunker, vilket gör det mer energi-krävande och kostsamt att pumpa grundvattnet. Detta analyseras i fallstudiet, Turlock subbasin, där det även utförs en förenklad kostnads-nytto analys, i vilken lönsamheten av strategier för att undvika grundvatten-övertrassering jämförs med Business As Usual (BAU) för åren 2001 och 2050, baserad på en hög och en låg uppskattning av energi kostnader. Året 2050 beräknas inklusive förväntade förändringar i klimatet. En övertrassering på 95 miljoner m3 i 2001 visar sig resultera i att grundvatten nivån sjunker 19,3 cm, vilket ökar energibehovet och kostnaden av att pumpa grundvatten med 0,32 Wh/m3 respektivt 0,416 cents/m3. Att minska produktionen visar sig att endast vara lönsamt i ett fall: år 2050 med höga energi uppskattningar. Att byta grödor visar sig vara lönsamt i alla fall. Att förbruka desalinerat vatten visar sig vara olönsamt i alla fall. Det dras slutsatsen att förändringar i klimatet och kostnader av konstbevattning kommer att leda till en eller fler av följande utfall: förminskad produktion, ett skift mot högre $/m3 grödor, och/eller förhöjda matpriser.

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Pool, Donald Robert 1955. "Hydrogeology of McMullen Valley, west-central Arizona." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/191959.

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The hydrogeology of McMullen Valley, west-central Arizona, was investigated using geologic, geophysical, and hydrologic data and a numerical model of the ground-water system. Geologic information and gravity modeling indicate that the main structure of McMullen Valley is a syncline. Basin fill that accumulated in the structural depression is the main aquifer and is divided into upper and lower units. A fine-grained facies in separates the aquifer into shallow and deep systems. A numerical model was used to analyze the ground-water system for both steady-state and transient conditions. The steady-state model aided in evaluating the distribution of hydraulic properties. The transient model was used to analyze system response to pumping stress. Water-level declines are controlled by the distribution of pumpage, specific-yield, and the fine-grained facies of lower basin fill. Significant water-level declines may extend to aquifer boundaries in most of the basin.

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Bieker, Chelsea Jean. "Out the Valley." PDXScholar, 2012. https://pdxscholar.library.pdx.edu/open_access_etds/349.

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The following eight stories make up Out the Valley, a collection of short fiction. Each story stands independently as a single work, though together they are bound by ties to California's Central Valley. The places the characters inhabit range widely in socio-economic class systems, from the gang-ruled streets of Fresno in Beautiful, Smart, Talented, to upper middle class suburbia, looking back over one man's life in My Mary. Each character is dealing with their own set of deficiencies, so to speak. In Dominoes, Ross recalls his first love from prison. In Be Thou My Vision, a mother takes a trip to understand the life of her daughter in the wake of her murder. The Bare of Our Chests circles truth in a series of frames as the main character, Maynard, tries to confront the past while mourning his mother. A More Interesting Story shows Joni attempt to find freedom in her world of mental restrictions. In A Well Matched Man, Ephram's superficiality keeps him from finding and recognizing love. The title story, Deficiencies, follows a college-aged young man, Erol, as he learns to write despite dyslexia and the onslaught of obsessive love for his tutor. These are stories that the main characters wish they were not telling--events they cannot face in truth, and so view instead through their own flawed lenses.

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Nash, Linda Lorraine. "Transforming the Central Valley : body, identity, and environment in California, 1850-1970 /." Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/10414.

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Anderson, Darcy J., and Darcy J. Anderson. "Central Avra Valley storage and recovery project geochemical modeling study." Thesis, The University of Arizona, 2000. http://hdl.handle.net/10150/626879.

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The chemical and isotopic characteristics of the groundwater in A vra Valley, Arizona, were investigated, and existing hydrologic information was compiled to determine processes affecting groundwater chemistry in this area. The characteristics of Central Arizona Project (CAP) water, the surface water source for recharge operations in the Central Avra Valley Storage and Recovery Project (CAVSARP), were investigated for comparison. The changes that occurred over time in the chemistry of the groundwater were evaluated with respect to vadose zone processes and mixing with CAP water during recharge operations. Two major vadose zone processes were identified: flushing of perched water remaining from historical agricultural irrigation, and cation exchange as recharged CAP water infiltrated through clay layers at the site. Geochemical modeling using PHREEQC was conducted for groundwater, CAP water and mixtures of the two waters to determine processes that could affect recharge rates and the chemical composition of groundwater that will be recovered for delivery to customers. The results of the modeling were used to infer the likelihood that mineral precipitation and ion exchange occurred during the study period of January 1998 to December 1999. Based on the modeling results, significant mineral precipitation and subsequent decreases in recharge rates seems unlikely. Cation exchange processes will continue to alter the chemical composition of the CAP water between the recharge basin and its arrival at the water table.

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Wischusen, John David Henry School of Biological Earth &amp Environmental Sciences UNSW. "Hydrogeology, hydrochemistry and isotope hydrology of Palm Valley, Central Australia." Awarded by:University of New South Wales. School of Biological, Earth and Environmental Sciences, 2005. http://handle.unsw.edu.au/1959.4/32925.

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The Palm Valley oasis in arid central Australia is characterised by stands of palm trees (Livistona mariae). How these unique plants, separated by nearly a 1000 kilometres of arid country from their nearest relatives persist, has long fascinated visitors. Defining the hydrogeology of the Hermannsburg Sandstone, a regionally extensive and thick Devonian sequence of the Amadeus Basin that underlies Palm Valley, is the major thrust of investigation. Appraisal of drilling data shows this aquifer to be a dual porosity fractured rock aquifer which, on a regional scale, behaves as a low permeability, hydraulically continuous resource. Groundwater is low salinity (TDS <1000 mg/L) and bicarbonate rich. Slight variations in cation chemistry indicate different flow paths with separate geochemical histories have been sampled. Stable isotope (????H, ???????O) results from Palm Valley show groundwater to have a uniform composition that plots on or near a local meteoric water line. Radiocarbon results are observed to vary from effectively dead (< 4%) to 87 % modern carbon. To resolve groundwater age beyond the radiocarbon window the long lived radioisotope 36Cl was also used. Ratios of 36Cl/Cl range from 130 to 290 x 10-15. In this region atmospheric 36Cl/Cl ratio is around 300 x 10-15. Thus an age range of around 300 ka is indicated if, as is apparent, radioactive decay is the only significant cause of 36Cl/Cl variation within the aquifer. A review of previous, often controversial, 36Cl decay studies shows results are usually ambiguous due to lack of certainty when factoring subsurface Cl- addition into decay calculations. Apparently, due to the thickness of the Hermannsburg Sandstone, no subsurface sources of Cl- such as aquitards or halites, are encountered along groundwater flow paths, hence the clear 36Cl decay trend seen. The classic homogenous aquifer with varying surface topography, the "Toth" flow model, is the simplest conceptual model that need be invoked to explain these isotope data. Complexities, associated with local topography flow cells superimposed on the regional gradient, signify groundwater with markedly different flow path lengths has been sampled. The long travel times (> 100 ka) indicate groundwater discharge would endure through arid phases associated with Quaternary climate oscillations. Such a flow system can explain the persistence of this arid zone groundwater-dependent ecosystem and highlight the possibility that Palm Valley has acted as a flora refuge since at least the mid- Pleistocene.

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Coleman, Margaret E. (Margaret Emily). "The tectonic evolution of the central Himalya, Marsyandi Valley, Nepal." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/10663.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1996.
Folded map in pocket following text.
Includes bibliographical references.
by Margaret E. Coleman.
Ph.D.

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Pena, Kyle. "PALEOSEISMOLOGY OF THE CENTRAL GARLOCK FAULT IN SEARLES VALLEY, CALIFORNIA." CSUSB ScholarWorks, 2019. https://scholarworks.lib.csusb.edu/etd/956.

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In this study, a paleoseismic trench with limited age constraints that was previously excavated in 1990 across the central Garlock Fault near Christmas Canyon, in Searles Valley, California, was reopened to take advantage of new advances in luminescence dating techniques to investigate potential temporal variability in earthquake recurrence on the Garlock fault and to analyze previously unexposed older earthquake evidence. The trench exposed interbedded alluvial sand and pebble-gravels, with well-sorted, rounded, lacustrine sand from the most recent highstand of pluvial Lake Searles present at the base of the trench. Preliminary findings suggest at least 10 surface rupturing earthquake events occurred during the 10 k.y. time period exposed in the trench. To provide age constraints on the paleo-surface-rupturing events from the new trench, 54 luminescence samples were collected and the single-grain luminescence dating technique post- - was employed. The ages indicated that 7 events have occurred in the past ~7.2 ka, with at least 3 additional events in the more poorly stratified deeper section of the trench. This suggests a recurrence interval of ~1000 years. Event pattern seen at this trench did not exactly replicate the same pattern at other paleoseismic sites along the Garlock Fault. The most recent event seen at this trench occured within the same time period as the most recent events seen at the other paleoseismic sites on the central Garlock Fault.

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Pope, Nathan. "Hmong Parent Choice in Hmong Language Programs in Central Valley California." Thesis, Mills College, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10788699.

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This research explores Hmong parents’ choices and experiences in choosing district provided educational programs that provide instruction in Hmong language for their children. The study involved interviews with district employees who have created, implemented and/or teach in district provided Hmong language programs. These interviews were followed by focus group interviews with Hmong parents about the choices and experiences of district provided Hmong language programs. Findings were that administrators were deeply committed to providing Hmong language programs to serve students identity and to provide an additive model of bilingualism that promotes the students English language learning as well as mother tongue learning; Hmong parents are very worried about potential language loss of their children’s Hmong language and they are actively looking for more Hmong language opportunities for their children; parents are very happy with Hmong language programs provided by district and want to see those programs expanded.

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Thomson, Skye Ryan. "Quaternary stratigraphy and geomorphology of the Central Okanagan Valley, British Columbia." Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/33424.

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Theories on the origin of the valley-fill architecture and age of the Okanagan basin sediments remain divided between those favouring a pre-Fraser Glaciation and those favouring a post-Fraser Glaciation genesis. Regionally, landforms related to large meltwater discharges are continually being recognized, but sediment packages demonstrating those processes were previously unknown. Glacial sediments and landforms on the University of British Columbia campus near Kelowna BC were studied using surficial mapping, shallow seismic, and lithologic logs. Analysis revealed basin architecture consisting of fluvial valley fills, tributary fans, and subglacial flood deposits. The lowest valley sequence includes coarse fluvial sediments >65,000 yrs BP. Above are fine-grained sand and layers of organics (woody debris) radiocarbon dated at 35,000 - 23,000 yrs BP. Dates indicate continual deposition leading up to and during glaciation. The upper 10 - 20 m of sediments contains high energy bedforms that include dunes, antidunes, hummocky cross-stratification, and hummocky unconformities. Stacked bedforms are commonly conformably draped by laminated silt and clay couplets, indicating repeated discharge events filling a subglacial reservoir. Esker networks intrude into subglacial bedforms and represent high energy subglacial meltwater conduit erosion and deposition near the ice margins. Waning flow gravel deposits were initially parallel to esker direction, but locally reoriented into clastic dykes. Clastic dyke formation likely resulted from pressure created by regional ice recoupling after drainage of a subglacial lake phase. The following sequence is proposed: 1) The Okanagan Valley operated as a pre-glacial river valley 65,000 - 23,000 yrs BP and filled with clastic sediments and woody debris during glacial onset. 2) During the Fraser Glaciation, several high energy subglacial floods from the north and northwest filled a subglacial lake that repeatedly drained. 3) Esker conduit sedimentation and erosion indicates last stages of rapid flow from the west of the campus. 4) Clastic dykes within the esker indicate massive pressure heads ensued, and were likely caused by regional ice sheet recoupling. 5) Absence of tills in the central part of the valley and truncation of the esker distally indicates a late-stage water flow scoured out glacial sediments, except in the lee of bedrock obstacles.

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Sola, M. A. "The seismic structure under the central Midland Valley from refraction measurements." Thesis, University of Glasgow, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372416.

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Goodchild, Helen. "Modelling Roman agricultural production in the Middle Tiber Valley, Central Italy." Thesis, University of Birmingham, 2007. http://etheses.bham.ac.uk//id/eprint/175/.

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This thesis analyses the potential agricultural production of the regions of South Etruria and Sabina, north of Rome in the Middle Tiber Valley, Central Italy. Historical evidence from Roman authors is combined with archaeological evidence from field survey and geographical resource data, and modelled within a Geographical Information System. Farm size and location are investigated in order to determine any correlation with contemporary Roman recommendations. Multi-criteria evaluation is then used to create suitability maps, showing those regions within the study area best suited to different types of crops. A number of different models for agricultural production within the study area are presented. Many variables are utilised, each presenting a range of possibilities for the carrying capacity of the area, complementing previous studies of demography. Research into workload, nutrition and crop yields provides a basis for determining the supported population of the area. Urban provisioning is investigated also, showing how high yielding models could have supported a large urban population within the studied region, as well as its potential contribution to the food supply of Rome. This analysis showed which agricultural systems could adequately supply urban centres, and highlighted those models that would have led either to an urban dependency on larger scale trade networks or to decline.

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Cortez, Jacqueline Nicole. "Experiences of Latinos with Diabetes in the Central San Joaquin Valley." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1157605/.

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Embarking on a quest to uncover the shared experiences of Latinos with diabetes in the Central San Joaquin Valley is the principal issue discussed in this body of work. Diabetes is estimated to become a serious public health problem, with a current estimate of more than 30 million already afflicted. Engaging in participant-observation at a local clinic serving patients in a Diabetes Education Program and semi-structured interviews with Latinos attending the program, this research explores cultural experiences of diabetes. The primary aim of this research is to answer how health education information is accepted and interpreted based on cultural definitions of diabetes to inform diabetes management strategies.

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Yang, Zhao, Francina Dominguez, Xubin Zeng, Huancui Hu, Hoshin Gupta, and Ben Yang. "Impact of Irrigation over the California Central Valley on Regional Climate." AMER METEOROLOGICAL SOC, 2017. http://hdl.handle.net/10150/625202.

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Irrigation, while being an important anthropogenic factor affecting the local to regional water cycle, is not typically represented in regional climate models. An irrigation scheme is incorporated into the Noah land surface scheme of the Weather Research and Forecasting (WRF) Model that has a calibrated convective parameterization and a tracer package is used to tag and track water vapor. To assess the impact of irrigation over the California Central Valley (CCV) on the regional climate of the U.S. Southwest, simulations are run (for three dry and three wet years) both with and without the irrigation scheme. Incorporation of the irrigation scheme resulted in simulated surface air temperature and humidity that were closer to observations, decreased depth of the planetary boundary layer over the CCV, and increased convective available potential energy. The result was an overall increase in precipitation over the Sierra Nevada range and the Colorado River basin during the summer. Water vapor rising from the irrigated region mainly moved northeastward and contributed to precipitation in Nevada and Idaho. Specifically, the results indicate increased precipitation on the windward side of the Sierra Nevada and over the Colorado River basin. The former is possibly linked to a sea-breeze-type circulation near the CCV, while the latter is likely associated with a wave pattern related to latent heat release over the moisture transport belt.

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Liang, Shumin. "Modeling urban growth in California's Central Valley : a neoclassic economic approach /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2004. http://uclibs.org/PID/11984.

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Bryson, Rachel Welton. "Chasing the dream literature and regional construction in California's Great Central Valley /." Thesis, Montana State University, 2006. http://etd.lib.montana.edu/etd/2006/bryson/BrysonR0506.pdf.

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Bross, Leah. "Policy Recommendations for the Effective Distribution of Water in California's Central Valley." Scholarship @ Claremont, 2011. http://scholarship.claremont.edu/cmc_theses/243.

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In approaching such complicated water issues as faced in the Central Valley, the United Nations has attempted to create a process for effective water resource governance with its Integrated Water Resources Management (IWRM) process. This approach outlines four dimensions of water governance that must be acknowledged and balanced in an effective policymaking process.2 Initially, policymakers must divide water resources equitably along socio-economic strata. After this, water resources must be efficiently used to promote economic growth. In allocating this resource between parties, all stakeholders and citizens must be given equal political opportunities to influence the division and distribution process. Finally, it is essential to the United Nations that water be appropriated and used in an environmentally sustainable way that not only protects ecosystems, but also those who depend on those ecosystems for their livelihoods. It is essential that policymakers in charge of distributing California’s water rights use the IWRM program as a baseline and a starting point for any future policy regimens, as these are the four most basic and integral components of the issue that must be addressed. Beyond the IWRM guidelines, policymakers must approach water distribution issues with the several diverse viewpoints and interests of Californians in mind. It is important to note that as policy issues are being debated, the problem itself is also constantly in flux. In the face of these varied challenges that put a strain on already scarce water resources, appropriate governance and management is becoming more and more necessary. It has been stated that “as a result of climate change,environmental degradation, and a lack of sustained investment in the system, our water system can nolonger meet the needs of the state.”3 The distribution of water in the Central Valley requires an intricate balance of interests between rival, yet deeply interconnected parties.In creating successful water policy, party lines must be crossed and compromises must be agreed upon in the interest of California’s economic, environmental, and social wellbeing.

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Rusmore, John Theodore. "Nitrogen deposition along a California freeway and impacts on Central Valley grassland species /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2004. http://uclibs.org/PID/11984.

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Williamson, Kevin Sean. "Ecological genetics of fall-run Chinook salmon (Oncorhynchus tshawytscha) in California's Central Valley /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2004. http://uclibs.org/PID/11984.

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Newbold, Stephen Carlisle. "Targeting conservation activities : cost-effective wetlands restoration in the Central Valley of California /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2002. http://uclibs.org/PID/11984.

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Thesis (Ph. D.)--University of California, Davis, 2002.
Degree granted in Ecology. Includes bibliographical references (leaves189-199). Also available via the World Wide Web. (Restricted to UC campuses)

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Kelley, Alice Repsher. "Archaeological Geology and Postglacial Development of the Central Penobscot River Valley, Maine, USA." Fogler Library, University of Maine, 2006. http://www.library.umaine.edu/theses/pdf/KelleyAR2006.pdf.

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McCullough, Laura. "Oneota ground stone technology in the Central Des Moines River Valley of Iowa." [Ames, Iowa : Iowa State University], 2007.

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Xiong, Mai. "A descriptive study of Hmong youth gang members in the California Central Valley." Scholarly Commons, 2002. https://scholarlycommons.pacific.edu/uop_etds/2599.

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This study investigated the perceptions of Hmong youth gang members and professional workers related to the following research questions: How does a Hmong youth become a gang member? Why are Hmong youth involved in gangs? What are the benefits of being in a gang? What are the activities that Hmong youths do in a gang? How does a gang member get out of the gang? An open-ended survey questionnaire was used for the Hmong youth gang members. A standardized open-ended interview approach was used for the professional workers. Twenty-eight youth gang members and ten professional workers participated in this study. The data collected from this study were analyzed using description, classification, and interpretation techniques. The findings show that a Hmong youth can become a gang member by forming a gang, jumping in (being beaten), or committing a criminal activity. It was found that the youth gang members joined the gang for a variety of reasons, such as having siblings or friends who were in the gang, intimidation, discrimination, fun and excitement, family problems, or school problems. The most frequently stated reasons were gang friends and intimidation. The findings show that the gang provides the gang member friendship, social bonding, belonging, economic gain, respect, support, protection, fun and excitement. The activities that the youth gang members engage in include smoking, drinking, partying, dealing drugs, stealing, fighting, drive-by shootings, and home invasions. The study indicates that jumping out (being beaten), moving away, or getting married are the different ways that a Hmong youth gang member can get out of the gang.

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Dietz, David Delbert. "Geophysical investigation of concealed bedrock pediments in Central Avra Valley, Pima County, Arizona." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/558027.

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Bardoux, Marc 1958 Carleton University Dissertation Geology. "The Okanagan Valley normal fault from Penticton to Enderby south- central British Columbia." Ottawa.:, 1993.

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Rice, Karen C. "Hydrogeology and Hydrochemistry of Springs in Mantua Valley and Vicinity, North-Central Utah." DigitalCommons@USU, 1987. https://digitalcommons.usu.edu/etd/5025.

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Chemical and tritium analyses of groundwater, precipitation and discharge records, fracture orientations, lineaments, and structural, stratigraphic, and topographic relationships have been used to describe the groundwater systems of Mantua Valley, north-central Utah. Groundwater flows through fractured Paleozoic quartzites and carbonate rocks and discharges from eleven perennial springs in Mantua Valley. Permeability in quartzites is the result of intense faulting and jointing. Groundwater in carbonate aquifers flows through fractures and/or fractures modified by solution and discharges as relatively large springs (up to 227 liters per second). Neogene normal faulting, rather than extensive karst processes, has produced valleys which are closed or nearly closed to surface-water drainage. Groundwater in the area has relatively low total dissolved solids, is warmer than the mean annual air temperature, and is of the calcium-magnesium-bicarbonate type. Temperatures of the groundwater suggest circulation depths in excess of 10 to 185 meters. Intermittent turbidity and fluctuations in calcite and dolomite saturation indices and in groundwater temperatures suggest that springs may be supplied by mixtures of shallow and deeper groundwater flow. With the methods used here, a water budget analysis of the area indicates that recharge to the groundwater systems is approximately 49% of mean annual precipitation. Annual recharge and average discharge of the springs were used to calculate recharge areas, which range from 3.0 km2 to 18 km2. Tritium analyses of two of the springs suggest mean residence times of less than ten years.

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Raath, Gideon. "The impact of high rainfall and flood events on Eucalyptus camaldulensis distribution along the central Breede River." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/97021.

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Thesis (MSc)--Stellenbosch University, 2015.
ENGLISH ABSTRACT: Eucalyptus camaldulensis Dehnh., or River Red Gum, is a commercially valuable yet recognised invasive alien plant (IAP) of riparian zones throughout South Africa. The invasive potential of E. camaldulensis is widely recognised, with specific regulations aimed at the management of E. camaldulensis. E. camaldulensis is known to use large amounts of water, reduce biodiversity, change river morphology and impact hydrological regimes of rivers. In the native range throughout Australia, E. camaldulensis displays a distinct relationship between rainfall, and flood events, for seed dispersal, germination and establishment, and consequently spatial extent, yet little is known about the relationships in the South African context. The aim of this project was to assess the impact of high rainfall and flood events on the establishment and distribution of E. camaldulensis along the Middle Breede River, between Worcester and Swellendam in the Western Cape, by establishing the current spatial extent of E. camaldulensis along the river, identifying flood events since 1950 and evaluating the impact rainfall and flood events had on the spatial extent thereof. Aerial imagery, rainfall, discharge and river level data was obtained dating back to 1980, as well as field data comprising of GPS-bounding of E. camaldulensis stands. Additionally, density measurements were obtained and interviews conducted with land users. Spatial analysis of aerial imagery, coupled with perimeter (GPS) data and density data were used to conduct spatio-temporal analysis, employing GIS and conventional statistical approaches to address the various objectives. Results indicated E. camaldulensis stands had a small overall increase in spatial extent since 1980. Flooding and rainfall events coincided with an increase in occurrence of E. camaldulensis with elevated river levels and frequent flooding, while spatial variation of this relationship was observed. The hydrological regime of the Breede River coincides with a slow increase in spatial extent of E. camaldulensis stands, but no affirmation of a positive real-world relationship was possible using the available data. Results further suggested, based on the current age class composition, that existing stands originated roughly during 1980, possibly due to commercial forestry related seeding into the river. Reduced fragmentation between stakeholders, educational programmes and improved reporting systems were recommended for improved IAP management within the area.
AFRIKAANSE OPSOMMING: Eucalyptus camaldulensis, of Rooibloekom (RB), is ‘n waardevolle kommersiële, maar erkende indringer plantspesie (IP) wat veral oewersones in Suid-Afrika indring. Die indringerpotensiaal van E. camaldulensis is welbekend, en spesifieke regulasies, gemik op die bestuur van RB en ander spesies is reeds aangeneem. E. camaldulensis is veral bekend vir sy hoë watergebruik, sy vermindering van biodiversiteit, sy vermoë om riviervorme te verander en sy algehele impak op die hidrologiese patroon van riviere waarmee dit in aanraking kom. In sy oorspronklike verspreidingsgebied in Australië toon E. camaldulensis ‘n bepaalde verhouding tussen reënval en vloedgebeurtenisse vir saadverspreiding, ontkieming en vestiging en derhalwe die ruimtelike verspreiding van die spesie; alhoewel hierdie verhouding in die Suid-Afrikaanse konteks steeds redelik onverduidelik bly. Die doelwit van hierdie studie was dus om die impak van hoë reënval en vloedgebeurtenisse op die ruimtelike verspreiding en vestiging van E. camaldulensis teenaan die Middel Breëde Rivier, spesifiek tussen Worcester en Swellendam, te evalueer. Hierdie doelwit was bereik deur die historiese ruimtelike verspreiding teenaan die rivier te meet, hoë reënval en vloedgebeurtenisse vanaf 1980 te identifiseer, en die huidige verspreiding en omtrek met GPS te meet. Digtheidafmetings, sowel as onderhoude met belanghebbendes teenaan die rivier was ook opgeneem. Visuele interpretatasie van lugfotos, sowel as omtrek (GPS) en digtheid-data was gebruik om ruimtelike analise uit te voer, deur die gebruik van GIS en konvensionele statistiese metodes, ten einde die doelwitte te evalueer. Resultate dui aan dat E. camaldulensis areas ‘n klein algemene groei getoon het sedert 1980. Hoë-reënval en gereëlde vloedgebeurtenisse het ook gepaard gegaan met ‘n groei van E. camaldulensis oppervlak, alhoewel hierdie verhouding ruimtelike variasie getoon het, met ‘n algemene groei patroon gemerk oor die volledige studietydperk. Ook geen stimulerende verhouding kon vanuit die beskikbare data bevestig word nie. Addisionele resultate het aangedui dat die verspreiding van E. camaldulensis ongeveer 1980 onstaan het, moontlik as gevolg van kommersiële bosbou-aanplanting en verwante saadverspreiding in die rivier vanaf daardie tyd. Aanbevelings ten opsigte van verbeterde indringerbestuur sluit in die beperking van huidige fragmentasie tussen belanghebbendes en betrokke verwyderingsorganisasies, addisionele onderrigprogramme sowel as die verbetering van terugvoersisteme.

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Lassotovitch, Cheryl Rhodes. "The Evaluation of DBCP in groundwater of the Kings Basin, Central Joaquin Valley California." Thesis, The University of Arizona, 1996. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_etd_hy0058_m_sip1_w.pdf&type=application/pdf.

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Hoare, Sally. "A multi-proxy approach to reconstructing palaeoenvironmental change at Kilombe, Central Rift Valley, Kenya." Thesis, University of Liverpool, 2015. http://livrepository.liverpool.ac.uk/2037599/.

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Linking climate and evolutionary change within the hominin lineage relies on the production of higher resolution records from sites which preserve hominin fossil and/or archaeological occurrences. The Acheulean site of Kilombe in the Central Rift Valley, Kenya is one of the largest handaxe sites in Eastern Africa; its immediate area is now shown to preserve a continuous sedimentary record from the early Pleistocene through to the Holocene. The main Acheulean occurrences at Kilombe date to about one million years, and are preserved in less than one metre of sedimentation. However, renewed research since 2008 has identified a recurring human presence with handaxes found in other parts of the sequence, along with Middle and Later Stone Age materials from late Pleistocene and potentially Holocene deposits. This thesis presents a record of palaeoenvironmental change extending from 1.07 to 0.487 Ma and coeval with the Acheulean occurrences at Kilombe. A multi-proxy approach was taken here to investigate the nature and impact of both long-term trends of environmental change and those occurring on shorter timescales over a 500,000 year period. The techniques of environmental magnetism and desktop-based major and trace element geochemistry were adopted as a rapid, non-destructive approach which require only small amounts of sample for analyses making them ideal proxies from which to examine environmental change over a long time period with little expense incurred. A long-term record of environmental change is revealed from the Kilombe sedimentary sequences based on geochemical and magnetic proxies sensitive to chemical weathering intensity and pedogenesis. Overall, results reveal a long-term increasing trend in aridification/cooling at Kilombe throughout the Pleistocene with substantial variability superimposed upon this trend linked to a range of environmental processes including dissolution and volcanic activity. This research now provides a general environmental setting for the major Acheulean occurrences at Kilombe.

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Adams, Catalina. "Strong assibilation and prestige : a sociolinguistic study in the Central Valley of Costa Rica /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2002. http://uclibs.org/PID/11984.

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Golembeski, Robert C. "Agricultural practices and nitrate pollution in ground water in the Central Valley of Chile /." Electronic version (PDF), 2004. http://dl.uncw.edu/etd/2004/golembeskir/robertgolembeski.pdf.

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Gnieser, Christoph. "Terrain disturbances by winter roads in the lower and central Mackenzie River Valley, N.W.T., Canada." PDXScholar, 1990. https://pdxscholar.library.pdx.edu/open_access_etds/4165.

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Winter roads, built from compacted snow and I or ice, are common throughout the circumpolar North. They are considered effective and economical means of providing seasonal access into permafrost terrain while minimizing the potential for environmental damage. The purpose of this study is an appraisal of long-term environmental impacts of winter roads by comparative assessment of terrain morphology, microclimate, permafrost, soils, and vegetation, on winter road right-of-ways and in adjacent undisturbed control areas.

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Mills-Novoa, Megan, Philippo Pszczólkowski, and Francisco Meza. "The Impact of Climate Change on the Viticultural Suitability of Maipo Valley, Chile." ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD, 2016. http://hdl.handle.net/10150/622665.

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This study uses the case of the Maipo Valley in Chile to examine how climate change will affect viticultural suitability. Using a geographic information system analysis of topographic, soil, land use, and climate data, a baseline assessment of viticultural suitability in the Maipo Valley was performed. The impact of climate change on viticultural suitability was modeled by overlaying downscaled global circulation model temperature data for two emission scenarios. The findings of this study suggest that the capacity of vineyard managers in the Maipo Valley to cultivate high-quality traditional grape varietals from cooler grape maturity classes might be limited in the future.

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Dougherty, Sara L. "Development of a 3-D upper crustal velocity model for the Goldstream Valley, central Alaska." Thesis, Boston College, 2008. http://hdl.handle.net/2345/352.

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The uppermost crustal velocity structure of the Goldstream Valley, central Alaska is investigated using a series of five explosions that were detonated in schist bedrock and recorded at >120 local stations to develop 1-D and 3-D models of the upper crust. Simple refraction analyses reveal that both P- and S-wave arrival times are azimuth dependent, with the fastest velocities in the southeast and northeast directions. The Swave velocity structure of the upper crust is also determined through multiple filter analysis and a damped, least squares inversion of 0.2-2 sec period Rg waves. The shear wave velocity model from the surface-wave analysis is combined with the refraction analysis results to develop 1-D P- and S-wave models to a depth of 2 km. In order to better constrain P- and S-wave velocity variations both laterally and with depth throughout the Goldstream Valley, 3-D velocity models are produced using a numerical simulation model
Thesis (MS) — Boston College, 2008
Submitted to: Boston College. Graduate School of Arts and Sciences
Discipline: Geology and Geophysics

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Mitchell, Jane Virginia. "Acquisition development and demonstration of grit among latina teachers from the central San Joaquin Valley." Scholarly Commons, 2015. https://scholarlycommons.pacific.edu/uop_etds/872.

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This qualitative collective case study explored how four female Latina teachers in the Central San Joaquin Valley acquired and developed the noncognitive trait of grit. Additionally, this study explored how the manifestation of this noncognitive trait of grit is demonstrated by these teachers with students in their classrooms. Through a series of interviews, and classroom observations with annotated field notes, I examined the life experiences and professional educational background of participants in order to highlight factors that are contributory and fundamental in the underpinnings of how grit developed in each of their lives. I examined and analyzed distinctive traits, specific influences, and behaviors. The theoretical framework developed by Duckworth, Peterson, Matthews and Kelly (2007) provided the background structure to help in understanding the noncognitive trait of grit. This exploration extended current scholarship on grit by exploring one specific cultural and gendered-subset of teachers to aid in the understanding of how grit emerges in teachers deemed exceptional. This qualitative case study addresses the following questions: 1. From the perspective of four female Latina teachers, what is grit? 2. From the perspectives of four female Latina teachers, in what ways has grit been acquired, developed and demonstrated? 3. From the perspective of four female Latina teachers, how has gender and race shaped their experiences in grit? 4. From the perspectives of four female Latina teachers, and as evidenced by student outcomes, how does the trait of grit impact teacher effectiveness?

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Lane, Kevin John. "Engineering the puna : the hydraulics of agro-pastoral communities in a North-central Peruvian valley." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613886.

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Pryce, T. O. "Prehistoric copper production and technological reproduction in the Khao Wong Prachan Valley of central Thailand." Thesis, University College London (University of London), 2009. http://discovery.ucl.ac.uk/18573/.

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Employing a technological approach derived from the ‘Anthropology of Technology’ theoretical literature, this thesis concerns the identification and explanation of change in prehistoric extractive metallurgical behaviour in the Khao Wong Prachan Valley of central Thailand. The ‘Valley’ metallurgical complex, amongst the largest in Eurasia, constitutes Southeast Asia’s only documented industrial-scale copper-smelting evidence. The two smelting sites investigated, Non Pa Wai and Nil Kham Haeng, provide an interrupted but analytically useful sequence of metallurgical consumption and production evidence spanning c. 1450 BCE to c. 300 CE. The enormous quantity of industrial waste at these sites suggests they were probably major copper supply nodes within ancient Southeast Asian metal exchange networks. Excavated samples of mineral, technical ceramic, and slag from Non Pa Wai and Nil Kham Haeng were analysed in hand specimen, microstructurally by reflected-light microscopy and scanning electron microscopy (SEM), and chemically by polarising energy dispersive x-ray fluorescence spectrometry ([P]ED-XRF) and scanning electron microscopy with energy dispersive x-ray fluorescence spectrometry (SEM-EDS). Resulting analytical data were used to generate detailed technological reconstructions of copper smelting behaviour at the two sites, which were refined by a programme of field experimentation. Results indicate a long-term improvement in the technical proficiency of Valley metalworkers, accompanied by an increase in the human effort of copper production. This shift in local ‘metallurgical ethos’ is interpreted as a response to rising regional demand for copper in late prehistory.

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Ali, Ayesha. "Water Politics in a Water-Scarce Landscape : Examining the Groundwater Debate in California’s Central Valley." Thesis, Uppsala universitet, Institutionen för arkeologi och antik historia, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-414194.

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The history of California is in many ways a story about water, and the outsized effect that droughts, floods, and seasonal precipitation rates have had on the political and economic development of the state over the past 170 years. This thesis uses discourse analysis of historical and ongoing negotiations that have been presented in federal and state reports, narratives, case laws and legislation to explore how the discourse around water politics has been shaped in the state. From this, an antiessentialist environmental history develops around the relationship between overdrafted groundwater basins in the Central Valley and the agriculture industry located there. Finally, this thesis explores what the future of a waterscape built during the capitalization of modern society may look like as we move towards a new regime of nature.

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Pond, Eric C. "Seismic parameters for the central United States based on paleoliquefaction evidence in the Wabash Valley." Diss., This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-08032007-102244/.

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Burroughs, Virginia. "An Assessment of Habitat Suitability for Pronghorn Populations of the Central Valley Region of California." DigitalCommons@CalPoly, 2013. https://digitalcommons.calpoly.edu/theses/1142.

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Efforts to reintroduce and maintain populations of pronghorn (Antilocapra americana) to the California Central Valley, specifically the Carrizo Plain National Monument (CPNM) and the Mojave Desert (Antelope Valley) portion of Tejon Ranch, have largely been unsuccessful due to dwindling numbers of translocated animals. The objective of this study was to improve upon previous models for the CPNM using aerial survey data and then apply the model to the Tejon Ranch. Aerial survey data collected from 2000-2010 on the CPNM was used to establish “use” and “non-use” areas in the model. Model variables included vegetation type (forest, shrub, grassland, semi-desert scrub, crops, and bare areas), slope, and road density. Vegetation and road density variables were treated categorically and slope as a continuous variable. Kernel density estimation (KDE) was used to estimate utilization distributions and home ranges (Fieberg 2007). An 80% isopleth was used to define “used” and “unused” habitat areas within the study site. Binary logistic regression was used to detect correlations between habitat variables and habitat use by pronghorn. Results of the regression analysis indicated overall significance with a p-value of < 0.0001 (testing that all slopes = 0). Each habitat variable comparison was made after adjusting for the other variables (e.g., slope effects were evaluated after adjusting for road density and vegetation type) and was found to be significant. Each variable coefficient was then included in a predictive equation and entered into GIS to generate a map to predict where pronghorn would likely be observed. Similar layers were created for the Tejon Ranch and the predictive equation was run with the CPNM statistical analysis. Limited conclusions about habitat suitability on the CPNM or the Tejon Ranch can be made based on the habitat data available for this model. While slope, road density, and vegetation type are all significant habitat variables influencing pronghorn habitat use, further study is needed to understand the mechanisms driving these relationships. With additional data expansion of the current habitat suitability model would help to further define pronghorn habitat use, specifically the creation of a focused model of a particular season, life history period, or individual animal use to identify more detailed habitat use patterns.

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Duranel, Arnaud. "Hydrologie et modélisation hydrologique des tourbières acides du Massif Central (France)." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSES012/document.

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L'objet de la présente thèse est de caractériser, quantifier et modéliser les flux d'eau au sein de la Réserve Naturelle Nationale de la Tourbière des Dauges, située en Limousin (Massif Central, France) et qui inclue une tourbière acide de fond de vallon et son bassin versant. Un ensemble de techniques, incluant la description de coupes superficielles existantes, la réinterprétation de sondages géologiques profonds, la tomographie de résistivité électrique et une modélisation de la distribution spatiale des formations affleurantes, ont été utilisées pour caractériser la nature et la géométrie des formations d'altération du granite. Les dépôts alluviaux et tourbeux ont été caractérisés et cartographiés par sondage à la tarière et à la tige filetée, et leur conductivité hydraulique estimée par choc hydraulique. Les précipitations, les paramètres météorologiques nécessaires au calcul de l'évapotranspiration potentielle, les débits et niveaux dans les ruisseaux, et les niveaux piézométriques dans la tourbe et les formations minérales sous jacentes ont été mesurés en continu pendant trois ans. Le modèle hydrologique distribué à base physique MIKE SHE / MIKE 11 a été utilisé pour modéliser les écoulements et les niveaux piézométriques au sein de la tourbière et de son bassin versant avec un pas de temps quotidien et une résolution spatiale de IO m. Il est montré que les apports souterrains issus de la zone fissurée du granite et suintant au travers du dépôt tourbeux constituent une part quantitativement importante et fonctionnellement essentielle de la balance hydrique de la zone humide. La présence d'une nappe affleurante entraîne une évacuation rapide vers les cours d'eau des apports par ruissellement ou par précipitation directe du fait de la saturation des histosols. Toutefois, il est montré que le fonctionnement hydrologique à l'échelle locale peut s'éloigner de ce schéma général du fait d'une grande hétérogénéité du taux d'humification et de la conductivité hydraulique de la tourbe, de la présence de dépôts alluviaux très perméables sous ou au sein du dépôt tourbeux et de perturbations anthropiques passées. Une fois calibré, le modèle hydrologique, qui représente la zone fissurée du socle granitique comme un milieu poreux équivalent, donne des résultats satisfaisants à très bons selon les indicateurs de performance utilisés: il est capable de reproduire les débits dans les cours d'eau au niveau des quatre stations de jaugeage disponibles, et le niveau de la nappe dans la plupart des piézomètres installés. A l'échelle du bassin versant étudié, le niveau moyen de la nappe simulé par le modèle montre une très bonne concordance avec la distribution observée des végétations de zone humide, cartographiée de manière indépendante. Les analyses de sensibilité ont montré que la porosité efficace et la conductivité hydraulique horizontale de la zone fissurée du granite sont les paramètres auxquels les débits et les niveaux de nappe (y compris dans la tourbe) simulés par le modèle sont les plus sensibles, ce qui démontre l'importance d'une meilleure caractérisation des formations d'altération du granite dans tout le bassin versant pour la compréhension et la modélisation du fonctionnement hydrologique de ce type de zone humide. Le modèle a été utilisé pour simuler l'impact potentiel d'un changement d'occupation des sols au sein du bassin versant sur la balance hydrique et les niveaux de nappe dans la zone humide, ainsi que sur les débits dans les cours d'eau. Le modèle suggère que le remplacement des végétations conduirait à une réduction substantielle des apports de surface et souterrains à la tourbière et à un abaissement conséquent des niveaux de nappe dans les histosols en période estivale
This thesis identifies, quantifies and models water fluxes within the Dauges National Nature Reserve, an acidic valley mire in the French Massif Central. A range of techniques were used to investigate the nature and geometry of granite weathering formations and of peat deposits. Rainfall, reference evapotranspiration, stream discharge, stream stage, groundwater table depths and piezometric heads were monitored over a three-year period. The distributed, physics-based hydrological model MIKE SHE / MIKE 11 was used to model water flow within the mire and its catchment. lt was shown that the mire is mostly fed by groundwater flowing within the densely fissured granite zone and upwelling through the peat deposits. Upwelling to the peat layer and see page to overland flow were highest along the mire boundaries. However hydrological functioning differs from this general conceptual model in some locations due to the high variability of the peat hydraulic characteristics, the presence of highly permeable alluvial deposits of past human interference including drainage. The equivalent porous medium approach used to mode groundwater flow within the fissured granite zone gave satisfactory results : the model was able to reproduce discharge at several locations within the high-relief catchment and groundwater table depth in most monitoring points. Sensitivity analyses showed that the specific yield and horizontal hydraulic conductivity of the fissured zone are the parameter to which simulated stream discharge and groundwater table depth, including in peat, are most sensitive. The model was forced with new vegetation pararneters to assess the potential impacts of changes in catchment land use on the mire hydrological conditions. Replacement of the broad leaf woodlands that currently cover most of the catchment with conifer plantations would lead to a substantial reduction in surface and groundwater intlows to the mire and to a substantial drop in summer groundwater table depths, particularly along the mire margins

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McGrath, Hollis Joyce. "Developmental changes in chemical and physical properties of Coal Valley minesoils in the central Alberta foothills." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ64970.pdf.

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Collins, Philip E. F. "Floodplain environmental change since the last glacial maximum in the Lower Kennet Valley, South-Central England." Thesis, University of Reading, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294864.

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The lower Kennet Valley terraces reflect fluctuations in river regime through the Quaternary. Sediments and valley floor geomorphology provide a detailed record of Devensian and Flandrian fluvial behaviour and environmental change. Two major surfaces occur, the floodplain and the Beenham Grange Terrace (2 - 3m above the floodplain). Levelling showed that the terrace south of the river, underlain by deposits of two Early Devensian interstadials, was part of the Beenham Grange level, and not the Thatcham Terrace as previously proposed. The fluvial succession consisted of the subflood plain Midgham Peat Formation overlying the Woolhalllpton Gravel Formation The latter also rises to form the surface of the Beenham Grange Terrace adjacent to the floodplain. A subunit of the Woolhampton Formation, the Heales Lock Gravel Member, thickened over a large depression in the local Tertiary bedrock and was associated with syndepositional subsidence which aided excellent subfossil preservation in the sediments. A major channel fill within the member - the Wasing Sand Bed - contained Betula with a distinctive herb flora which, with 14C data, indicates a correlation with the Late Devensian Windermere Interstadial. Lithostratigraphy, biostratigraphy and 14C data from gravels resting unconformably on the Wasing Sand indicated a Loch Lomond Stadial age. The sedimentology of the Midgham Peat Formation reflected early Flandrian reductions in flow competence associated with silt, peat and tufa deposition. Regional woodland expansion was followed by alder can' closing of the floodplain during the Atlantic. A subsequent hiatus ended ,with Sub-boreal (?Bronze Age) flooding and deposition, perhaps anthropogenically induced. An upper silt reflects lower energy flooding in an agricultural landscape. To avoid taphonomic difficulties macrofossil interpretations utilised only well-preserved material. Pollen taphonomy was more problematic. A pilot study in subarctic Canada suggested that, while fluvial pollen assemblages were not exactly equivalent to regional pollen rain through local inputs and sorting, vegetation changes were identifiable.

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Winer, Emily R. "Interpretation and Climatic Significance of Late Quaternary Valley-fill Deposits in Wadi Hasa, West-Central Jordan." Miami University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=miami1272313345.

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Markley, Michelle J. "Strain and Volume Loss in a Second Order Buckle Fold, Central Appalachian Valley and Ridge, U.S.A." Oberlin College Honors Theses / OhioLINK, 1990. http://rave.ohiolink.edu/etdc/view?acc_num=oberlin1415357805.

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Lipo, Carl P. "Science, style and the study of community structure : an example from the Central Mississippi River Valley /." Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/6558.

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Dietz, David, Charles Williams, and Floyd Marsh. "A Report to the Central Arizona Water Conservation District...on Geophysical Investigations of Butler Valley, Arizona." University of Arizona (Tucson, AZ), 1985. http://hdl.handle.net/10150/308905.

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A Report to the Central Arizona Water Conservation District, 23636 North 7th Street, Phoenix, AZ 85024 on Geophysical Investigations of Butler Valley, Arizona / January 1985
Gravity Survey Investigation in Butler Valley Arizona - Charles Williams / Seismic Refraction Survey Investigation in Butler, Arizona - David Dietz
Summary: Recent (1984) geophysical investigations of Butler Valley, Arizona, included gravity and seismic refraction surveys to estimate depth to and describe general configuration of bedrock underlying the basin outlet at the narrows into the Ranegras Plain. Interpretation and correlation of geophysical data collected from these surveys indicates a depth to bedrock at the basin outlet ranging from about 55 to 90 feet along a profile between bedrock outcrops, a distance of approximately 3,800 feet (see Figure 3, Profile A -A'). Such a bedrock configuration appears favorable to closing the lower end of the basin to eliminate possible ground-water underflow into the Ranegras Plain, using different engineering or management techniques. In addition, these data were correlated with available data from previous gravity surveys and geologic well logs to produce three other cross-basin profiles, which together were used to develop a generalized depth to bedrock map of the entire Valley (see Figure 7). Geophysical information presented in this report can be used to estimate alluvial thickness, define storage volume and boundaries of the aquifer and describe configuration of the shallow bedrock saddle beneath the narrows of the Valley. This information is useful in developing and evaluating technical or management solutions to eliminate potential ground-water outflow from the basin.

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Makowski, Krzysztof, and Alain Vallenas. "The Lima occupation in the Lurin valley: towards the origins of monumental Pachacamac." Pontificia Universidad Católica del Perú, 2017. http://repositorio.pucp.edu.pe/index/handle/123456789/113287.

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Abstract:

The recent excavations of two important areas of the Pachacamac Monumental Sector, the foot of the principal facade of the Old Temple and the area beneath the hall of the main entrance at the Temple of the Sun, have allowed the authors to determine the relative chronology of the first construction at this site during the Early Intermediate Period. The ceramic fragments recovered share similar technological, formal and iconographic characteristics with the Lima Medio ceramics (Lima 4-5 in the Patterson sequence) from Chancay, Chillon and Ancon. This paper concurs with the hypothesis that after the conquest of the lower Rimac and Lurin valleys, there was an emerging regional multi-valley political entity which could relate to a complex chiefdom or an “Andean State.” However, during the Lima occupation of the Pachacamac site there is no evidence of an administrative center with urban residential zones. Instead, Pachacamac seems to have been a low-ranked local ceremonial center compared with the sites of Maranga, Pucllana or Cajamarquilla.
Las excavaciones llevadas a cabo por los autores en dos lugares claves del complejo monumental de Pachacamac, al pie de la fachada sur del Templo Viejo y debajo del vestíbulo de la entrada principal al Templo del Sol, han permitidodeterminar con precisión, la cronología relativa del inicio de obras de construcción, emprendidas durante el Periodo Intermedio Temprano, en el área del famoso santuario, ubicado sobre la margen izquierda del río Lurín, en los suburbios de Lima. El material cerámico asociado a los niveles de ocupación tiene las mismas características tecnológicas, formales e iconográficas que la cerámica Lima Medio (Lima 4-5 según Patterson (2014[1966]) en los valles de Chancay y Chillón, así como en Ancón. Cambios simultáneos, profundos, y de gran escala, se hacen presentes durante las fases Lima Medio en la Costa Central del Perú. Las tecnologías de producción de cerámica, su decoración, las técnicas de construcción, las formas de arquitectura, y los rituales funerarios, originarios de la cuenca de Chillón y de Ancón fueron adoptadas por laspoblaciones de Rímac y Lurín. Estas evidencias hacen reforzar la hipótesis que luego de la conquista de los valles bajos de Rímac y Lurín se está formando una entidad política regional multivalle con características de jefatura compleja y/o del «estado andino». Pachacamac lima no tuvo características de un centro administrativo con zonas urbanas residenciales, sino más bien las de un centro ceremonial local, posiblemente de rango subalterno, a juzgar por la comparación con Maranga, Pucllana y Cajamarquilla.

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Dissertations / Theses on the topic 'The Hut Central Valley'

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