Dissertations / Theses on the topic 'Hydroclimat'
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Kifani, Souad. "Approche spatio-temporelle des relations hydroclimat-dynamique des espèces pélagiques en région d'upwelling : cas de la sardine du stock central marocain." Brest, 1991. http://www.theses.fr/1991BRES2005.
Full textRouyer-Denimal, Louis. "Compréhension des interactions entre l'hydroclimat du Nord-Est du Brésil et l'Atlantique tropical de l'Ouest au cours des derniers 300 000 ans par une approche multi-traceurs organiques." Electronic Thesis or Diss., Sorbonne université, 2023. http://www.theses.fr/2023SORUS468.
Full textThe Earth is a complex system with many interactions and is also home to countless species. Consequently, extensive research has enhanced our comprehension of the Earth's climate over the past few decades. Nonetheless, numerous areas remain unexplored. The North-East (NE) region of Brazil and the western tropical Atlantic have received limited attention so far. The distinctive hydroclimate of northeastern Brazil and the contribution of the tropical western Atlantic to interhemispheric heat transfer make these regions climatologically important. Lipid biomarkers are among the frequently utilized proxys for palaeoenvironmental reconstructions, and they provide valuable insights. Numerous environmental factors, including ocean temperature, vegetation composition, and hydroclimate conditions, can be deduced from the abundance, distribution, and isotopic composition of these compounds. The objective of this thesis project is to reconstruct previous hydroclimatic fluctuations in the extreme northeastern area of Brazil, associated with surface circulation in the western tropical Atlantic. This task will be achieved through the characterisation of organic material obtained from a marine sediment core sampled from the Brazilian margin spanning the last 305, 000 years. The characterization of organic matter (OM) at both total and molecular level was employed to identify the sources of OM and, specifically, the composition of the modern vegetation within the study area. Moreover, the reconstruction of surface and subsurface ocean temperatures respectively from the distribution of long-chain alkenones and isoprenoid glycerol alkyl tetraethers highlighted significant subsurface warmings over the last three deglaciations. The cause of the warming of the tropical western Atlantic during these periods is suggested to be the combined effect of reduced ocean circulation and increased intensity of the Agulhas Leakage. Finally, the study has found a close relationship between hydroclimatic changes and past variations in vegetation cover in northeastern Brazil, as inferred from long-chain n-alkanes properties. This relationship is largely influenced by the upper ocean temperature of the tropical Atlantic and the intensity of South-East trade winds. The present study allowed us to better understand the role of the tropical Atlantic as a heat reservoir during deglaciations and to better constrain the influences controlling past hydroclimatic variations in northeastern Brazil
Rowe, Scott Thomas. "The predictability of Iowa's hydroclimate through analog forecasts." Thesis, University of Iowa, 2014. https://ir.uiowa.edu/etd/1390.
Full textSchiemann, Reinhard. "Forcing and variability of the hydroclimate in Central Asia /." Zürich : ETH, 2007. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17426.
Full textHartmann, Holly Chris. "Stakeholder driven research in a hydroclimatic context." Diss., FIND on the Web, 2001. http://hdl.handle.net/10150/191254.
Full textWi, Sungwook. "Impact of Climate Change on Hydroclimatic Variables." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/265344.
Full textCanon, Barriga Julio Eduardo. "Downscaling Climate and Vegetation Variability Associated with Global Climate Signals: a new Statistical Approach Applied to the Colorado River Basin." Diss., The University of Arizona, 2009. http://hdl.handle.net/10150/195379.
Full textSobreiro, João Francisco Ferreira. "Vegetation multitemporal responses to hydroclimate variations in the Espinhaço Range (Brazil) /." Rio Claro, 2019. http://hdl.handle.net/11449/183096.
Full textResumo: Os sistemas montanhosos são laboratórios naturais para análise de gradientes. Elevação, amplitude e diferenças topográficas em montanhas podem criar fortes diferenças microclimáticas a curtas distâncias, aninhadas dentro da mesma região biogeográfica e macroclimática, permitindo-nos compreender melhor as respostas da vegetação e os feedbacks sobre a disponibilidade de água. Neste estudo, avaliamos como a distribuição da vegetação está ligada à disponibilidade de água na Serra do Espinhaço. Para tanto, abordamos as seguintes questões: 1) Quais são os regimes hidroclimáticos encontrados na Serra do Espinhaço e seus correspondentes tipos de vegetação? 2) Onde a produtividade da vegetação é mais e / ou menos acoplada aos regimes hidroclimáticos? 3) A topografia é capaz de impactar a produtividade da vegetação e suas relações de acoplamento com regimes hidroclimáticos? Além disso, considerando estas relações ambientais e de vegetação, 4) Como a resiliência climática dos tipos de vegetação nesta região varia? Conclui-se que na faixa do Espinhaço, a maior parte da dinâmica de produtividade da vegetação espaço-temporal é impulsionada por condições hidroclimáticas e / ou topo-edáficas. Nossos resultados mostram que a vegetação da Caatinga teve uma resposta plástica e relativamente rápida ao Déficit Hídrico Climático (CWD) e foi o tipo de vegetação com maior restrição hídrica. Cerrado e Campos Rupestres tiveram respostas semelhantes às flutuações no déficit hídrico, mostrando um gradie... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Montane systems are natural laboratories for gradient analysis. Elevation, amplitude and topographical differences over mountains can create strong microclimatic differences over short distances, nested within the same biogeographic and macro-climatic region, thus allowing us to better understand vegetation responses and feedbacks to water availability. In this study, we assessed how vegetation distribution is linked to water availability in the Espinhaço Mountain Range. For that, we addressed the following questions: 1) Which are the hydroclimatic regimes found in the Espinhaço Range and their corresponding vegetation types? 2) Where does vegetation productivity is more and/or less coupled to hydroclimatic regimes? 3) Is topography able to impact vegetation productivity and its coupling relations to hydroclimatic regimes? Also, considering these environmental and vegetation relationships, 4) How does the climatic resilience of the vegetation types in this region vary? We conclude that in the Espinhaço Range, most of the spatio-temporal vegetation productivity dynamics are driven by hydroclimatic and/or topo-edaphic conditions. Our results show that “Caatinga” vegetation had a plastic and relatively fast response to Climatic Water Deficit (CWD) and was the most water-constrained vegetation type. “Cerrado” and “Campos Rupestres” had similar responses to fluctuations in water deficit, showing a gradient of slower to faster responses from “Humid” to “Very dry” hydroclimatic regi... (Complete abstract click electronic access below)
Mestre
Sivapalan, Vinothan S. "Vegetation, Hydroclimate, and Fire Dynamics from the Late Illinois Glaciation (130 ka) to the Late Holocene." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1595850302778246.
Full textHu, Kexiang. "Understanding Australia’s groundwater spatio-temporal variability in relation to its hydroclimate-hydrogeology." Thesis, Curtin University, 2022. http://hdl.handle.net/20.500.11937/89138.
Full textFallah, Hassanabadi Bijan [Verfasser]. "Modelling the Asian Paleo-hydroclimatic Variability / Bijan Fallah Hassanabadi." Berlin : Freie Universität Berlin, 2015. http://d-nb.info/1072072971/34.
Full textHegyi, Bradley Michael. "Dynamical and thermodynamical influences of the tropics and midlatitudes on arctic hydroclimate variability." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/53869.
Full textGriffiths, Michael L., Alena K. Kimbrough, Michael K. Gagan, Russell N. Drysdale, Julia E. Cole, Kathleen R. Johnson, Jian-Xin Zhao, Benjamin I. Cook, John C. Hellstrom, and Wahyoe S. Hantoro. "Western Pacific hydroclimate linked to global climate variability over the past two millennia." NATURE PUBLISHING GROUP, 2016. http://hdl.handle.net/10150/617210.
Full textRao, M. P., B. I. Cook, E. R. Cook, R. D. D'Arrigo, P. J. Krusic, K. J. Anchukaitis, A. N. LeGrande, et al. "European and Mediterranean hydroclimate responses to tropical volcanic forcing over the last millennium." AMER GEOPHYSICAL UNION, 2017. http://hdl.handle.net/10150/625048.
Full textConlin, Molly R. "Soil hydroclimate, vegetation, and substrate controls on carbon flux in an Alaskan fen." Diss., Connect to online resource - MSU authorized users, 2008.
Find full textThe direct goal of this thesis is determine the effect of expermental soil climate manipulatoins on carbon fluxes in an Alaskan rich fen and to assess the indirect influence of substrate quality on carbon mineralizaton rates in peat--From abstract. Title from PDF t.p. (viewed on July 29, 2009) Includes bibliographical references. Also issued in print.
Anchukaitis, Kevin J. "Comparing proxy and model estimates of hydroclimate variability and change over the Common Era." COPERNICUS GESELLSCHAFT MBH, 2017. http://hdl.handle.net/10150/626426.
Full textTomin, Marissa. "Hydroclimatic study of Plio-Pleistocene aquatic sites in Meade County, Kansas." Kent State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=kent1596743720058214.
Full textWrigley, Rosemarie H. "Hydroclimatic variations of the early-to-mid holocene in southwest Iran." Thesis, California State University, Long Beach, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1599197.
Full textA ∼2500 year record of hydrologic change from southern Iran is inferred from the mineralogy and stable isotopic composition of bulk and biogenic carbonates archived in Lake Hirom (27º 57’N, 53º52’E). This change is related to regional variations in moisture and to the larger Indian Summer Monsoon circulation (ISM). During the early Holocene, increased summer insolation from ~10,000 to 8,000 yr BP contributed to the intensification of the ISM. This intensification may have increased summer precipitation north of the modern ISM limit. Evidence of wetter lake conditions in Lake Hirom occur from 8,800 to 7,800 yr BP. Drier conditions occur and persist from 7,800 to 6,300 yr BP, until lacustrine marl changes to peat, indicating maximum aridity. The timing of the drying trend in the mid-Holocene of Lake Hirom correlates with cave and lake records in the Arabian Peninsula, and lake records in northern Iran, indicating a regional drying event.
Ward, Brittany Marie. "Reconstruction of Holocene coupling between the South America Monsoon System and local moisture variability from speleothem δ¹⁸O and ⁸⁷Sr/⁸⁶Sr records:." Thesis, Boston College, 2018. http://hdl.handle.net/2345/bc-ir:108373.
Full textInvestigating controls on past variability of South American hydroclimate is critical to assessing its response to future warming scenarios. δ¹⁸O records from South America offer insight into past variability of the South American Monsoon System (SAMS). The controls on precipitation δ¹⁸O values, however, can be decoupled from precipitation amount and thereby limit investigations of variability in local moisture conditions. Here we use a principle components analysis to assess the coherence of speleothem and lake core Holocene δ¹⁸O records in tropical South America to evaluate the extent to which δ¹⁸O variability reflects changes in SAMS intensity at different sites across the region. The main mode of variability across Holocene δ¹⁸O records (PC1) closely tracks austral summertime insolation, consistent with existing work. PC1 is strongly expressed at sites towards the periphery of the continent, while variability at interior sites bear little similarity that implicates controls, in addition to monsoon intensity, on these δ¹⁸O records. Further, we develop speleothem ⁸⁷Sr/⁸⁶Sr records spanning the Holocene from Tamboril Cave (Brazilian Highlands), Paraíso Cave (eastern Amazon Basin), Jaraguá Cave (Mato Grosso Plateau), and Botuverá Cave (Atlantic coastal plain) to investigate coupling between reconstructed monsoon variability and local moisture conditions. Speleothem ⁸⁷Sr/⁸⁶Sr variability is interpreted as a proxy of local moisture conditions, reflecting the degree of water-rock interaction with the cave host rock as driven by variations in water residence time. Speleothem ⁸⁷Sr/⁸⁶Sr records from all the sites, except Botuverá cave, do not co-vary with PC1, suggesting that local moisture conditions do not necessary follow variations in monsoon intensity at these interior sites. These speleothem ⁸⁷Sr/⁸⁶Sr records, however, generally suggest dry mid-Holocene conditions, consistent with interpretations of other paleo-moisture records in the region. These results highlight that dynamics, in addition to SAMS variability, might influence δ¹⁸O variability as well as local moisture conditions at interior sites, and highlight the need for δ¹⁸O-independent reconstructions of moisture conditions
Thesis (MS) — Boston College, 2018
Submitted to: Boston College. Graduate School of Arts and Sciences
Discipline: Earth and Environmental Sciences
Weaver, Scott Jamie. "Variability of the great plains low-level jet large scale circulation context and hydroclimate impacts /." College Park, Md. : University of Maryland, 2007. http://hdl.handle.net/1903/6872.
Full textThesis research directed by: Atmospheric and Oceanic Sciences. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
Wortham, Barbara E. "Last millennium decoupling of the South American Summer Monsoon and local hydroclimate of central Brazil." Thesis, Boston College, 2016. http://hdl.handle.net/2345/bc-ir:106969.
Full textThe South American Monsoon System is the dominant convective system over tropical South America during austral summer that is critical to a region heavily dependent on agricultural and hydroelectric production. An understanding of the controls on moisture conditions throughout Brazil is critical to assessing recurrent droughts and global climate change responses. An increasing number of monsoon reconstructions from δ¹⁸O records provide insight into last millennium variation of regional monsoon intensity. However, the relationship between past variations in monsoon intensity and local moisture conditions has yet to be investigated. In this study, we develop speleothem ⁸⁷Sr/⁸⁶Sr values as a paleo-moisture proxy from a cave site located in central Brazil. Increasing speleothem ⁸⁷Sr/⁸⁶Sr values and decreasing δ²³⁴U values over the last millennium indicate progressively wetter conditions. A similar trend in monsoon intensity is not evident in δ¹⁸O records from the region, suggesting that monsoon intensity is decoupled from the local moisture conditions through the late Holocene. The potential decoupling between the monsoon and local moisture conditions suggests that processes independent from those governing monsoon intensity may play a critical role in dictating moisture variability in the region
Thesis (MS) — Boston College, 2016
Submitted to: Boston College. Graduate School of Arts and Sciences
Discipline: Earth and Environmental Sciences
Longandjo, Georges-Noel Tiersmondo. "The Hydroclimate Variability of Central Africa: seasonal cycle, mechanisms, teleconnections and impacts on neighbouring regions." Thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/28440.
Full textRasheed, Bilhuda. "Impact assessment of hydroclimatic change on water stress in the Indus Basin." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/86271.
Full textTitle as it appears in the MIT degrees awarded program, September 19, 2013, page 10: Impact assessment of hydroclimatic change in the Indus Basin. Cataloged from PDF version of thesis.
Includes bibliographical references (pages 111-114).
Ninety percent of Pakistan's agricultural output is produced in fields irrigated by the Indus basin irrigation system, the world's largest network of canals, dams, barrages and tubewells. River flows, primarily fed by snow and glacial melt, are highly seasonal and fluctuate between intense floods and droughts. Built storage is relatively small, with withdrawals averaging at 70% of annual availability. Climate change, growth in sectoral water demands, and changes in water management infrastructure could have a profound impact on water stress in the coming decades. The interplay and contribution of these influences is explored using a model of the managed Indus River basin. To account for key hydro-climate shifts, I translate temperature rise and glacier cover scenarios into river runoff in 2050. I also project sectoral water demands to 2050. I then use an optimization model to estimate dam releases and project water stress to 2050. I find that climate change will cause decreases in peak river flows, but the changes in runoff will be comparable to current interannual variability. The most significant increase in water stress is caused by a scenario of 1-2.5°C warming and 1% annual glacial retreat. However, rises in demand have a greater impact on water stress than climate-induced changes in runoff which can be either positive or negative. The stabilization of global greenhouse gas emissions checks the rise in water demand and thus lowers future water stress. Effective adaptation options to an increase in water stress include building more storage capacity, relaxation of water allocation to allow inter-provincial water trading, and adaptation of the cropping calendar to the natural hydrological cycle.
by Bilhuda Rasheed.
S.M. in Technology and Policy
McDonald, Dana Marie. "Hydroclimatic influences on suspended sediment delivery in a small, High Arctic catchment." Thesis, Kingston, Ont. : [s.n.], 2007. http://hdl.handle.net/1974/720.
Full textGonzález-Reyes, Álvaro, James McPhee, Duncan A. Christie, Quesne Carlos Le, Paul Szejner, Mariano H. Masiokas, Ricardo Villalba, Ariel A. Muñoz, and Sebastián Crespo. "Spatiotemporal Variations in Hydroclimate across the Mediterranean Andes (30°–37°S) since the Early Twentieth Century." AMER METEOROLOGICAL SOC, 2017. http://hdl.handle.net/10150/625182.
Full textSaris, Faize. "Hydroclimatic variability in northeast Turkey : identifying climate and river flow dynamics and controls." Thesis, University of Birmingham, 2011. http://etheses.bham.ac.uk//id/eprint/3074/.
Full textRaúl, Sitoe Sandra. "Environmental history in southern Mozambique : Reconstruction of flooding events, hydroclimate and sea-level dynamics since mid-Holocene." Doctoral thesis, Stockholms universitet, Institutionen för naturgeografi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-148465.
Full textDenna avhandling behandlar studier av paleomiljöer i södra Mozambique med fokus på översvämningshistorik i Limpopo-flodens nedre lopp. Tidsspannet är mitt- och sen-holocen och inkluderar även klimat och havsnivåvariationer. Följande analysmetoder har applicerats på ett flertal sedimentkärnor för att belysa ovanstående frågeställningar: mineralmagnetiska parameterar, kornstorlek, organiskt kol samt kiselmikrofossil (diatoméeter och fytoliter). Åldrar har bestämts med 14C-metoden. Analyserna visar att mineralmagnetiska parametrar är lämpliga för att identifiera översvämningar, speciellt magnetisk susceptibilitet och SIRM. Dessa parametrar visar på ett sediments magnetiska kornstorlerkar och koncentrationen av finkorniga magnetiska mineral. Även kornstorleksanalyser fungerade som ett bra komplement till dessa metoder. Sammantaget har ett minimum av 16 översvämningar registrerats i Limpopo/flodens nedre lopp under de senaste 1100 åren. Särskilt stora översvämningar har daterats till AD 1250 (700 kal år BP), AD 1370 (580 kal år BP), AD 1580 (370 kal år BP), AD 1855 (95 kal år BP), AD 1920 (30 kal år BP), AD 1970 (20 kal år AP) och AD 2000 (50 kal år AP), där AP betyder ”after present”, vilket är 1950. Mindre kraftiga översvämningar har daterats till AD 940 (1010 kal år BP), AD 980 (970 kal år BP), AD 1040 (910 kal år BP), AD 1100 (850 kal år BP), AD 1300 (650 kal år BP), AD 1665 (285 kal år BP), AD 1730 (220 kal år BP), AD 1755 (195 kal år BP) och AD 1945 (5 kal år BP). Skriftliga källor visar på att åtminstone åtta översvämningar har ägt rum under de senaste 62 åren. Under samma period har denna undersökning registrerat två händelser, vilket indikerar att endast ett fåtal har registrerats med ovan nämnda metoder. Det är sannolikt att sedimentationsmönstret under en översvämning är komplicerat och inte heller likartad från gång till gång. Detta innebär att ett flertal sedimentkärnor behöver analyseras och dateras väl. Ytterligare en försvårande faktor är flodens mycket aktiva meandringsaktivitet. Analys av diatoméer har visats vara värdefulla när det gäller översvämningshistorik, klimatförändringar och havsytevariationer. Sedimenten i den något till flodslättens nedre lopp perifert belägna sjön Lungué indikerar fuktiga förhållanden mellan AD 1360 och 1560 (590 till 390 kal år BP). Kombinerade fytolit- och diatoméanalyser av sedimenten i sjön Chilau indikerar fuktiga förhållanden från AD 1200 till 1400 (750 till 550 kal år BP), varefter torrare förhållanden rådde till ca AD 1600 (350 kal år BP). Diatoméanalys av sedimenten i sjön Nhauhache indikerar generellt sett torrare förhållanden mellan AD 1200 och AD 1700 (750 till 250 kal år BP) då klimatet blev fuktigare. De fuktiga och torra förhållanden som dokumenterats i sjön Lungué och översvämningshistoriken korrelerar inte helt med lokala nederbördsförhållanden. Däremot stämmer erhållna data bättre med förhållanden i den övre delen av Limpopoflodens dräneringsområde. Även sjöar och fyllda meanderbågar på själva flodslätten verkar reagera tydligare på översvämningar orsakade av nederbörd i den övre delen av flodloppet. Undersökningen indikerar två faser av en förhöjd havsyta längs kusten i södra Mozambique. En äldre fas är daterad till ca 5000–4200 f.Kr. (6950–6150 kal år BP), vilken representerar den mellersta delen av det postglaciala värmeoptimet. Denna tolkning stöds även av andra undersökningar. En yngre fas har daterats till AD 300–950 (1650–1000 kal år BP), vilken korresponderar till en period med något förhöjda temperaturer i ett globalt perspektiv.
O presente projecto teve como objectivo a reconstrução do paleoambiente, paleohidrologia e paleoclima da costa Sul de Moçambique, com ênfase na identificação de vestígios de eventos de cheias que tenham, no passado, afectado a planície de inundação do Rio Limpopo, com vista a fazer a extensão das datações de cheias para o período anterior aos instrumentos de medição. Deste modo, foram estudados sedimentos recuperados através de testemunhos de sondagem em lagos dentro da planície de inundação (Lago Magandane, Lago Lungué, Lago Soane e o canal abandonado Coassane). As variações do nível do mar e mudanças climáticas do passado foram deduzidas a partir da análise de sedimentos de áreas costeiras a norte da planície de inundação (Lago Chilau, Lago Nhauhache e a Baía de Macassa). Para o alcance destes objectivos, os sedimentos dos testemunhos de sondagem recuperados foram submetidos a várias análises laboratoriais que incluem propriedades de minerais magnéticos, granulometria, teor de matéria orgânica e de microfósseis (diatomáceas e fitólitos). Para o estabelecimento do modelo cronológico foram usadas datações pelo método 14C feitas em matéria orgânica, assim como conchas de gastrópodes e bivalves. A combinação dos resultados obtidos para os pontos de amostragem localizados dentro da planície de inundação do Rio Limpopo, sugerem que esta área foi afectada por um mínimo de 16 eventos de cheias de variada magnitude nos últimos 1100 anos. As cheias de alta magnitude tiveram lugar nos anos 1250, 1370, 1580, 1855, 1920, 1970 e 2000. Por seu turno, as cheias de magnitude moderada ocorrerram nos anos 940, 980, 1040, 1100, 1300, 1665, 1730, 1755 e 1945.. Os anos a negrito são indicativos de eventos de cheias de alta magnitude. O número total de eventos identificados no presente estudo é um mínimo que poderá ter afectado a planície de inundação, tendo em consideração que fontes escritas reportam a ocorrência de pelo menos oito eventos nos últimos 62 anos, tendo o presente estudo revelado somente dois. Isto indica que apenas eventos de cheias intensos podem ser revelados pelos métodos aplicados nesta investigação. Adicionalmente, este estudo mostra a necessidade de aumentar o número de pontos de amostragem para permitir a identificação de mais eventos de cheias ocorridos no passado, devido à diferenciada resposta sedimentológica e geomagnética às cheias, a qual se encontra directamente relacionada à distância do rio meandrante. As análises de microfósseis de diatomáceas permitiram reconstruir o paleoclima e as influências do nível do mar nas áreas de estudo deste projecto. Os registros de diatomáceas do Lago Lungué indicam um período húmido entre AD 1360 e 1560. No Lago Chilau, dados de diatomáceas e fitólitos sugerem condições de humidade entre AD 1200 e 1400. Por seu turno, no Lago Nhauhache, condições de seca dominam entre AD 1200 e 1700. As condições de seca e humidade documentadas no Lago Lungué e os eventos de cheias revelados pelos sedimentos analisados da planície de inundação do Rio Limpopo não mostram total correlação com períodos de baixa e alta precipitação a nível local, mas apresentam boa correlação com evidências a montante na área de drenagem do Rio Limpopo. Em geral, lagos activos ou preenchidos por sedimentos mostrarão ser mais susceptíveis a cheias com origem a montante do que a nível local. As investigações conduzidas permitiram identificar dois períodos de alto nível do mar na região sul de Moçambique. A fase mais antiga teve lugar há cerca de 5000–4200 BC (6950–6150 anos do calendário BP), representando a fase mais recente do pós-glaciar climático óptimo (postglacial climatic optimum, PCA). A fase recente é datada de AD 300–950 (1650–1000 anos do calendário BP), correspondendo a um período de temperaturas relativamente altas a nível global.
Climate and Environmental Research
Grantz, Katrina Amelia. "Interannual variability of North American Monsoon hydroclimate and application to water management in the Pecos River Basin." Diss., Connect to online resource, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3239426.
Full textVaillencourt, David A. "Five-thousand years of hydroclimate variability on Adak Island, Alaska inferred from deltaD of n-alkanoic acids." Thesis, Northern Arizona University, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=1537814.
Full textHydrogen isotope ratios (δD) in various types of leaf waxes, including n-alkanoic acids, extracted from lacustrine sediments are becoming increasingly popular for understanding past climate changes. Leaf-wax δD values track precipitation δD, and provided that controls on precipitation δD are known, changes in leaf wax δD can be used to reconstruct these changes in the past. Seventy-six sediment samples from Andrew Lake, Adak Island, Alaska, extending to 4800 years ago (4.8 ka) were analyzed for δD of n-alkanoic acids. δD values of isolated C28 n-alkanoic acids show a strong inverse correlation with October-May storminess (days with >19 mm of precipitation) over the meteorological record (r2 = 0.58, p < 0.02), and a similarly strong correlation with total precipitation amount. This implies that isotopes in precipitation on Adak Island are strongly influenced by the amount effect. Shifts in precipitation amount and storminess are associated with shifts in the North Pacific hydroclimate, which is driven by the Aleutian Low during fall and winter. Low δD values indicate high precipitation amount/storminess on Adak Island, which correlates well to a weak or westward Aleutian Low as inferred from other sites, while high δD values indicate lower precipitation amount and generally correlate with a stronger or more eastward Aleutian Low. Results from Adak Island were combined with evidence from previously published paleoclimate studies from southern Alaska and the Yukon to reveal a more complete spatial picture of hydroclimatological changes for the last 5000 years. Variability in δD since 3.5 ka is related to changes in North Pacific atmospheric circulation patterns including the Aleutian Low. High precipitation amount/storminess during the Medieval Climate Anomaly (∼850 to 1050 AD) on Adak Island is consistent with evidence from other studies that suggest a weakened Aleutian Low. Evidence of decrease precipitation during the early Little Ice Age (∼1200 to 1500 AD) gave way to wetter conditions during the latter half (∼1500 to 1900 AD). A wet late LIA is consistent with the results from coastal studies in southern Alaska, suggesting another period of a weakened Aleutian Low. This study is part of a multi-proxy investigation involving two lakes on Adak Island including analyses of pollen, biogenic silica, chironomids, isotopes in diatoms, and other proxies to help increase our knowledge about past hydroclimate in the North Pacific.
Carolin, Stacy Anne. "Geochemistry of karst deposits in Borneo detailing hydroclimate variations in the Warm Pool across the late Pleistocene." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/52277.
Full textKaufman, Claire Allyn. "Recent hydroclimate dynamics in southwest Alaska understanding multidecadal climate variability through sedimentary process studies and varve sedimentology. /." Thesis, Kingston, Ont. : [s.n.], 2008. http://hdl.handle.net/1974/1471.
Full textChowdhury, Shahadat Hossain Civil & Environmental Engineering Faculty of Engineering UNSW. "Mitigating predictive uncertainty in hydroclimatic forecasts: impact of uncertain inputs and model structural form." Publisher:University of New South Wales. Civil & Environmental Engineering, 2009. http://handle.unsw.edu.au/1959.4/43378.
Full textFliehman, Ryan Mark. "Examining the Relationship Between Hydroclimatological Variables and High Flow Events." Thesis, The University of Arizona, 2012. http://hdl.handle.net/10150/228461.
Full textShams, Md Shamim. "Improving streamflow forecasting lead-time for Australian rivers using oceanic-atmospheric oscillations and hydroclimatic variables." Thesis, Curtin University, 2021. http://hdl.handle.net/20.500.11937/88140.
Full textKirk, Johnathan. "Hydroclimatic Variability and Contributing Mechanisms during the Early 21st Century Drought in the Colorado River Basin." Kent State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=kent1500480359156882.
Full textPederson, Gregory Thomas. "Long-Term Hydroclimatic Change in the U.S. Rocky Mountain Region: Implications for Ecosystems and Water Resources." Diss., The University of Arizona, 2010. http://hdl.handle.net/10150/194302.
Full textMartinez, Agudelo John Alejandro. "On the Hydroclimate of Southern South America: Water Vapor Transport and the Role of Shallow Groundwater on Land-Atmosphere Interactions." Diss., The University of Arizona, 2015. http://hdl.handle.net/10150/595679.
Full textRau, Lavado Pedro. "Variabilité du régime des précipitations, des débits et des bilans hydriques le long du versant pacifique péruvien : influence du phénomène ENSO et sensibilité au changement hydroclimatique." Thesis, Toulouse 3, 2017. http://www.theses.fr/2017TOU30249/document.
Full textClimate variability and associated extreme events as El Niño phenomenon (ENSO) represent the most difficult episodes to deal with along the Peruvian Pacific slope and coast. In addition, a growing water concern takes place since seventies. In-depth documentation of precipitation and runoff regimes becomes a key part in any water management plan and this research offers the first hydroclimatic variability study at monthly and annual time step in the study area over the last four decades (1970?2010 period). First, an exhaustive database treatment was carried out overcoming some limitations due to Andean geographical conditions. Second, precipitation regime was studied with a regionalization approach under non-stationary time-series conditions. A combined process consisting in k-means clustering and regional vector methodology was proposed. Nine regions were identified with a homogeneous precipitation regime following a latitudinal and altitudinal gradient. Third, a hydroclimatic balance is done at catchment-scale addressing the issue of climate and anthropogenization and their potential influences over hydroclimatic time series. The theoretical Budyko-Zhang framework was used and allowed identifying 11 out of 26 catchments with both low climate and anthropogenization influence (i.e. unimpaired conditions). This hypothesis was verified with the use of land use and land cover remote sensing products as MODIS and LBA imagery. Then, runoff regime was studied under unimpaired conditions and an extension over 49 catchments of the Peruvian Pacific drainage was done. A regional runoff model is proposed via two conceptual lumped models at annual and monthly time scale (GR1A and GR2M respectively). A Differential Split-Sample Test (DSST) was used to cope with modelling robustness over contrasted climate conditions as dry and wet years according to the semi-arid conditions. These results also showed an increasing regional discharge from arid Peruvian Pacific coast towards the Pacific Ocean. Finally, the scope of the thesis covers (1) a revisitation of ENSO/precipitation relationship considering the regionalized precipitation and several ENSO indices in order to discriminate the influence of the two types of El Niño (the eastern Pacific (EP) El Niño and the central Pacific (CP) El Niño) as well as the influence of large-scale atmospheric variability associated with the Madden and Julian Oscillation, and of regional oceanic conditions. The proposed methodology consisting in principal component analysis, wavelets and coherence, running correlations and spatial covariance analysis, highlights the significant decadal modulation with the larger ENSO impact in particular in the 2000s, ENSO/precipitation relationship reverses compared to the previous decade. The two dominant co-variability modes between sea surface temperature in the tropical Atlantic and Pacific oceans and the nine regions show salient features of the ENSO influence: increased precipitation over downstream regions in northern Peru during EP El Niño and decreased precipitation over upstream regions along the Pacific slope during CP El Niño events. (2) The sensitivity to hydroclimatic change is explored by hydroclimatic trend analysis as changes indicators of regional hydroclimatology. According to significant upward trends in annual temperature found in all catchments, results showed a significant warming in the study area with a mean of 0.2°C per decade. Also, changes in trajectories in the Budyko space (i.e. direction and magnitude) over the 11 selected catchments revealed that six catchments were shown to be sensitive to climate variability (i.e. likely with high sensitivity to future climate) and land use changes, where precipitation and temperature are the main drivers of these environments changes
Guan, Bin. "Pacific sea surface temperatures in the twentieth century variability, trend, and connections to long-term hydroclimate variations over the Great Plains /." College Park, Md.: University of Maryland, 2008. http://hdl.handle.net/1903/8807.
Full textThesis research directed by: Dept. of Atmospheric and Oceanic Sciences. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
Pietroń, Jan. "Sediment transport from source to sink in the Lake Baikal basin : Impacts of hydroclimatic change and mining." Doctoral thesis, Stockholms universitet, Institutionen för naturgeografi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-145442.
Full textNederbördens olika magnitud, intensitet och tidpunkt kan påverka ytavrinning, vattenerosion och transport av sediment längs flodkanaler. Mänskliga aktiviteter, som dammkonstruktion och gruvdrift i dagbrott kan också påtagligt påverka transport av sediment och sedimentbundna föroreningar. Många avrinningsområden i världen påverkas för närvarande av klimatförändringar samtidigt som trycket från andra mänskliga aktiviteter ökar. Men eftersom det ofta förekommer komplexa interaktioner mellan sådana multipla orsaker till förändring, är det utmanande att förstå och kvantifiera bidrag från enskilda orsaker, vilket behövs vid prediktiv modellering av framtida sediment- och föroreningsflöden. Denna avhandling behandlar sedimenttransport i Bajkalsjöns tillrinningsområde, som hydrologiskt domineras av den internationella Selengafloden i Ryssland och Mongoliet. Selengaflodens tillrinningsområde är exempelvis påverkat av klimatförändringar och ökat tryck från gruvdrift, men processkomplexiteten reduceras av det faktum att tillrinningsområdet är ett av världens få stora som fortfarande väsentligen saknar dammar och flödesreglering. I denna avhandling används en kombination av fältmätningskampanjer och modelleringsmetoder, i syfte att: (i) identifiera historiska hydroklimattrender och deras möjliga orsaker, (ii) analysera den rumsliga variationen i flodens sedimentbelastning inom de gruvpåverkade områdena, och (iii) undersöka sedimenttransport- och retentionsprocesser inom flodkanaler och i floddeltan. Resultaten visar att det årliga maximala dygnsflödet, liksom det årliga antalet högflödeshändelser, har minskat i Selengafloden under perioden 1938-2009, medan det årliga minimala dygnsflödet har ökat. Dessa förändringar i flödeskaraktäristika överensstämmer med förväntade effekter av storskaligt tinande permafrost. Både fältobservationer och modelleringsresultat visar att förändringar i högflödeshändelsers magnitud och årligt antal kan påverka transporten av bottensediment påtagligt. Dessutom har medelflödet minskat under de senaste 20 åren på grund av långvarig torka. Under lågflöden observerades metallberikat sediment från gruvområdena dominera flodvattnet. Om flödena fortsätter att minska i Selengafloden (eller andra gruvdriftspåverkade floder i världen), kan således ytterligare ökningar av flodvattnens metallkoncentrationer vara en av konsekvenserna. Under den långvariga torka som nu råder mängden sediment som fördelats över våtmarkerna i Selengaflodens delta ha minskat. Sediment beräknas dock fortfarande kunna transporteras till och deponeras inom flodbankar och vattenkroppar i Selengadeltats backwaterområden. Detta kan bidra till stabilisering av bankar och skyddsvallar, stödja våtmarkers utveckling och främja nettosedimentering.
Wielkość, czas trwania oraz intensywność opadów atmosferycznych oddziałuje na charakter odpływu, erozję oraz transport osadów rzecznych. Również ingerencja człowieka w środowisko – np. budowa zapór i zbiorników wodnych, czy górnictwo odkrywkowe – w różnym stopniu może wpływać na transport osadów oraz powiązanych z nimi zanieczyszczeń. Wiele dorzeczy na Ziemi, będących pod wpływem obecnych zmian klimatycznych, jest jednocześnie poddawanych narastającej antropopresji. W celu przewidywania przyszłych zmian w transporcie osadów i powiązanych z nimi zanieczyszczeń, potrzeba dogłębnego zrozumienia i oceny wpływu poszczególnych czynników powodujących te zmiany. Taka analiza jest jednak często utrudniona ze względu na złożone interakcje pomiędzy czynnikami powodującymi zmiany. Niniejsza rozprawa doktorska przedstawia wyniki badań związanych z analizą transportu osadów rzecznych w zlewni jeziora Bajkał, zdominowanej hydrologicznie transgraniczną rzeką Selengą, przepływającą przez tereny Rosji i Mongolii. Zlewnia rzeki Selengi podlega współczesnym zmianom klimatycznym oraz wzrastającej presji związanej z górnictwem. Złożoność procesów hydrologicznych jest jednak w tym wypadku ograniczona, ponieważ zlewnia Selengi jest jednym z nielicznych, względnie dużych dorzeczy na świecie, którego przepływy są – jak dotychczas – naturalne, nieuregulowane przez żadne zapory lub zbiorniki wodne. Dla poszczególnych celów: (i) identyfikacji historycznych trendów hydroklimatycznych i ich przyczyn, (ii) analizy przestrzennych zmian w transporcie osadów rzecznych w części zlewni dotkniętej górnictwem odkrywkowym oraz (iii) badania procesów transportu i magazynowania osadów w korycie i delcie rzeki; zostały w pracy zastosowane hydrometryczne dane pomiarowe, dane pochodzące z badań terenowych oraz metody modelowania. Wyniki badań wskazują na to, że w latach 1938-2009 zmalały roczne przepływy maksymalne oraz liczba wezbrań, podczas gdy w tym samym czasie wzrosły roczne przepływy minimalne. Powyższe zmiany są zgodne z oczekiwanym wpływem rozmarzania wiecznej zmarzliny na ustrój przepływów rzecznych. Analiza danych pomiarowych oraz wyników modelowania wskazują na to, że obecne zmiany dotyczące liczby oraz wielkości wezbrań mogą znacznie wpłynąć na transport osadów dennych w korytach rzek. Dodatkowo, w ciągu ostatnich 20 lat (1995-2014), średnie roczne przepływy znacznie spadły ze względu na przedłużający się okres suszy na terenie zlewni. Analiza danych terenowych pochodzących z obszarów górniczych wykazała, że podczas obniżonych przepływów, w zanieczyszczonych znaczną ilością metali osadach rzecznych, dominuje materiał pochodzący z działalności człowieka (około 80\% transportowanych osadów). Należy zatem przewidywać, że jeśli obecne zmiany w ustroju przepływów w dorzeczu Selengi (lub w innych podobnych dorzeczach na świecie) będą postępować, to ich następstwem może być dalszy wzrost koncentracji zanieczyszczeń (metali pochodzących z obszarów górniczych) rzek. Ponadto, w obecnym okresie obniżonych przepływów, na terenach zalewowych i jeziorach delty rzeki Selengi zatrzymuje się prawdopodobnie mniej osadów. Wyniki badań wskazują jednak na to, że osady rzeczne mogą być wciąż transportowane do brzegów i obszarów wodnych znajdujących się w strefie, w której stany wodne cieków delty są pod wpływem stanów wodnych jeziora Bajkału. Akumulacja materiału w tych częściach delty Selengi może pozytywnie wpływać na stabilizację naturalnych wałów oraz mokradeł i zwiększać sedymentację netto.
At the time of the doctoral defense, the following paper was unpublished and had a status as follows: Paper 4: Manuscript.
Cline, Michael Logan. "Extreme flooding in the Dolores River Basin, Colorado and Utah: insights from paleofloods, geochronology and hydroclimatic analysis." Diss., The University of Arizona, 2010. http://hdl.handle.net/10150/195522.
Full textBrocas, William [Verfasser], Thomas [Akademischer Betreuer] Felis, Gerlod [Gutachter] Wefer, and Gerrit [Gutachter] Lohmann. "A coral perspective on last interglacial tropical Atlantic temperature and hydroclimate variability / William Brocas ; Gutachter: Gerlod Wefer, Gerrit Lohmann ; Betreuer: Thomas Felis." Bremen : Staats- und Universitätsbibliothek Bremen, 2017. http://d-nb.info/1149219866/34.
Full textMcGrane, Scott James. "The hydrology of mesoscale catchments in Scotland : hydroclimatic trends, monitoring and modelling isotope dynamics and water quality implications." Thesis, University of Aberdeen, 2012. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=195978.
Full textLambeth-Beagles, Rachel Syringa. "An Assessment of Hydroclimatic Trends and Mid-Range Streamflow Predictive Capacity in Four Lower Colorado River Sub-Basins." Thesis, The University of Arizona, 2011. http://hdl.handle.net/10150/144578.
Full textHodelka, Bailee Nicole. "STRATIGRAPHY AND ORGANIC GEOCHEMISTRY REVEAL PATTERNS OF LATE QUATERNARY PALEO-PRODUCTIVITY AT MONO LAKE, CALIFORNIA." UKnowledge, 2018. https://uknowledge.uky.edu/ees_etds/58.
Full textMcLean, Kyle Ian. "Aquatic Macroinvertebrate Response to Shifts in Hydroclimatic Variability and Ecohydrological Conditions in Prairie-Pothole Wetlands: Implications for Biodiversity Conservation." Diss., North Dakota State University, 2020. https://hdl.handle.net/10365/31877.
Full textKodja, Domiho Japhet. "Indicateurs des évènements hydroclimatiques extrêmes dans le bassin versant de l'Ouémé à l'exutoire de Bonou en Afrique de l'Ouest." Thesis, Montpellier, 2018. http://www.theses.fr/2018MONTG014/document.
Full textThis research aims to characterize the indicators relating to extreme hydroclimatic events in Ouémé Watershed at Bonou’s outlet. To achieve this objective, climatological data (daily rain, daily temperatures, potential daily evapotranspiration), hydrometric data (daily flows), reanalysis data (atmospheric pressure, relative humidity, wind speed, West African Monsoon Indices), the ocean surface temperature on the Cotonou coast and land use mapping data of 1986, 2000, 2015 are used. The analysis of the hydroclimatic variability revealed that during the 1951-2015 period, the study area is marked by two breaks stationarity (1968 and 1987) which divided the series into three sub-periods. The rainfall variability reveals a regression of 18 % (in the south), 16 % (in the center) and 15.8 % (in the north) between the first sub-period (1951-1968) and the second sub-period (1969-1987), while the last sub-period (1988-2015) is marked by a rainfall recovery of 15 % (in the south), 16.3 % (in the center) and 15.7 % (in north) relative to the previous sub-period (1969-1987). This is not without consequences on the hydrological dynamics of the study area. In this sense, it is noted that there is a regression of 49.27% of the average annual flows between the 1951-1968 and 1969-1987 sub-periods and a 65 % increase between the 1969-1987 and the 1969-1987 sub-periods. 1988-2015. In the last sub-period (1988-2015), the results also reveal an increase in the indicators of extreme hydroclimatic events likely to cause floods Ouémé Watershed at Bonou’s outlet. The results shows that daily maximum rainfall has an occurrence of 2 years, 5 years, 10 years for strong rainfall events; 20 years, for very heavy rain events, 50 years and over for extremely heavy rain events in the study area. The maximum flow rates in 24 hours at the sametime as the return periods. The maximum flow rates of 50th quantiles occur every two years (02 years), the maximum flows corresponding to the hydrologically strong events, very strong occur every 10 years and the extremely high flows have an occurrence centennial. The conditions of atmospheric, oceanic, continental surface, wind speed, relative humidity, and geographic factors are all elements that interact in the spatio-temporal distribution of rainfall in the study area. The Rainfall of the basin is also influenced by the monsoon flow (north of the study area), to which the southeastern grain lines are associated and are responsible for the stormy rains and showers that generate flooding in the area. In addition, the current climatic context and land-use dynamics are determinants that amplify the occurrence of floods in the study area. The reasearch indicates that the rain-flow conceptual model, of the Rural Engineering with four parameters and the daily time step (GR4J), overestimates the flows observed during the low water period and the sub-peaks. The efficiency and performance criteria NSE, RMSE and KGE, highlighted and calculated on high water flow rates, gave better results in calibration than in validation. Better KGE values range from 83 to 85 % calibration and from 56 to 68 % validation, which gives the GR4J model the efficiency and performance to reproduce extreme flows of floods in the study area. The GR4J can therefore be used as a decision to support tool for updating hydrological standards in the study area. In order to future study about extreme climatic events, this research assessed output projection data from regional climate models from the African CORDEX Program that could be used for hydrological projections in future work in Ouémé Watershed at Bonou’s outlet
Raynaud, Damien. "Hydroclimatic variability and the integration of renewable energy in Europe : multiscale evaluation of the supply-demand balance for various energy sources and mixes." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAU036/document.
Full textIn the context of climate change, the integration of renewables in electric power systems is one of the main challenges of the coming decades. Climate-Related-Energy sources (CRE - solar, wind and hydro power) can contribute to reduce the greenhouse gas emissions. However, they exhibit large spatio-temporal fluctuations and the associated intermittent electricity generation often leads to an incomplete supply-demand balance. This study aims to evaluate the meteorological feasibility of developing an electric power system that would only rely on CRE sources. We focus on the multi-scale spatio-temporal fluctuations of these renewables by assuming a balance between mean electricity production and mean energy load. We develop and use CRE-mix, a suite of models able to convert meteorological conditions into CRE time series. It gives an assessment the spatio-temporal fluctuations of power production and energy demand, resulting from the multi-scale hydro-climatic variability. For a set of European regions, we assess the ease of integration of CRE sources, regarding their temporal consistency with energy demand. For each CRE source and multiple CRE mixes, we consider in turn (i) the mean penetration rate (PE), which quantifies the proportion of satisfied demand over a long period and (ii) the characteristics of low penetration periods, defined as sequences of days for which the penetration rate is lower than a given threshold. This study proves that single CRE sources have difficulty to meet the energy demand and suffer from long low penetration periods, due to their multi-scale temporal variations. However, using some integrating factors (multi-sources, storage systems, inter-regions electric power transmission), efficiently improves the reliability of CRE-based power systems with PE rates close to 100% and rare low penetration periods.These analyses, based on a 30-yr period, are extended to the entire 20th century in order to assess the low frequency fluctuations of CRE sources resulting from the internal variability of climate. Long regional series of production and demand, were generated thanks to the development of a statistical downscaling method based on atmospheric analogues (SCAMP). It simulates physically-consistent multivariate series of meteorological parameters. The results demonstrate that these fluctuations are related to some large scale oceano-climatic oscillations. Moreover, the multi-decennial variations of hydro power are particularly large: changes in PE rates exceeding 15% from one decade to the other and uneven energy droughts characteristics.Finally, we evaluate the relevance of the CRE sources under future climate conditions. SCAMP is used to produce downscaled projections of meteorological drivers of CRE sources for the 21st century from a selection of CMIP5 climate models. The resulting scenarios for precipitation are not consistent with other studies focusing of the future modifications of this variable in Europe. The application of SCAMP in a perfect-model approach seems to indicate that the large-scale-meteorology/local-precipitation relationship is changing in the course of the 21st century, for all total, convective and stratiform precipitation
Nandini-Weiß, Sri Durgesh [Verfasser], Matthias [Akademischer Betreuer] Prange, Michael [Gutachter] Schulz, and Martin [Gutachter] Claussen. "Hydroclimate variations in the Caspian Sea region from the late Quaternary to the future : a model perspective / Sri Durgesh Nandini-Weiß ; Gutachter: Michael Schulz, Martin Claussen ; Betreuer: Matthias Prange." Bremen : Staats- und Universitätsbibliothek Bremen, 2019. http://d-nb.info/119900359X/34.
Full textCollins, James A. [Verfasser], Gerold [Akademischer Betreuer] Wefer, and Michael [Akademischer Betreuer] Schulz. "Glacial to Holocene Hydroclimate in Western Africa: Insights from Organic and Major-Element Geochemistry of Hemipelagic Atlantic Ocean Sediments / James A. Collins. Gutachter: Gerold Wefer ; Michael Schulz. Betreuer: Gerold Wefer." Bremen : Staats- und Universitätsbibliothek Bremen, 2011. http://d-nb.info/1071898515/34.
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