Relevant bibliographies by topics / Ross Sea Region

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
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Academic literature on the topic 'Ross Sea Region'

Author: Grafiati
Published: 4 June 2021
Last updated: 19 February 2022

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Journal articles on the topic "Ross Sea Region"

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Dale, Ethan R., Adrian J. McDonald, Jack H. J. Coggins, and Wolfgang Rack. "Atmospheric forcing of sea ice anomalies in the Ross Sea polynya region." Cryosphere 11, no. 1 (January 27, 2017): 267–80. http://dx.doi.org/10.5194/tc-11-267-2017.

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Abstract. We investigate the impacts of strong wind events on the sea ice concentration within the Ross Sea polynya (RSP), which may have consequences on sea ice formation. Bootstrap sea ice concentration (SIC) measurements derived from satellite SSM/I brightness temperatures are correlated with surface winds and temperatures from Ross Ice Shelf automatic weather stations (AWSs) and weather models (ERA-Interim). Daily data in the austral winter period were used to classify characteristic weather regimes based on the percentiles of wind speed. For each regime a composite of a SIC anomaly was formed for the entire Ross Sea region and we found that persistent weak winds near the edge of the Ross Ice Shelf are generally associated with positive SIC anomalies in the Ross Sea polynya and vice versa. By analyzing sea ice motion vectors derived from the SSM/I brightness temperatures we find significant sea ice motion anomalies throughout the Ross Sea during strong wind events, which persist for several days after a strong wind event has ended. Strong, negative correlations are found between SIC and AWS wind speed within the RSP indicating that strong winds cause significant advection of sea ice in the region. We were able to partially recreate these correlations using colocated, modeled ERA-Interim wind speeds. However, large AWS and model differences are observed in the vicinity of Ross Island, where ERA-Interim underestimates wind speeds by a factor of 1.7 resulting in a significant misrepresentation of RSP processes in this area based on model data. Thus, the cross-correlation functions produced by compositing based on ERA-Interim wind speeds differed significantly from those produced with AWS wind speeds. In general the rapid decrease in SIC during a strong wind event is followed by a more gradual recovery in SIC. The SIC recovery continues over a time period greater than the average persistence of strong wind events and sea ice motion anomalies. This suggests that sea ice recovery occurs through thermodynamic rather than dynamic processes.
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Bertler, Nancy A. N., Howard Conway, Dorthe Dahl-Jensen, Daniel B. Emanuelsson, Mai Winstrup, Paul T. Vallelonga, James E. Lee, et al. "The Ross Sea Dipole – temperature, snow accumulation and sea ice variability in the Ross Sea region, Antarctica, over the past 2700 years." Climate of the Past 14, no. 2 (February 21, 2018): 193–214. http://dx.doi.org/10.5194/cp-14-193-2018.

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Abstract. High-resolution, well-dated climate archives provide an opportunity to investigate the dynamic interactions of climate patterns relevant for future projections. Here, we present data from a new, annually dated ice core record from the eastern Ross Sea, named the Roosevelt Island Climate Evolution (RICE) ice core. Comparison of this record with climate reanalysis data for the 1979–2012 interval shows that RICE reliably captures temperature and snow precipitation variability in the region. Trends over the past 2700 years in RICE are shown to be distinct from those in West Antarctica and the western Ross Sea captured by other ice cores. For most of this interval, the eastern Ross Sea was warming (or showing isotopic enrichment for other reasons), with increased snow accumulation and perhaps decreased sea ice concentration. However, West Antarctica cooled and the western Ross Sea showed no significant isotope temperature trend. This pattern here is referred to as the Ross Sea Dipole. Notably, during the Little Ice Age, West Antarctica and the western Ross Sea experienced colder than average temperatures, while the eastern Ross Sea underwent a period of warming or increased isotopic enrichment. From the 17th century onwards, this dipole relationship changed. All three regions show current warming, with snow accumulation declining in West Antarctica and the eastern Ross Sea but increasing in the western Ross Sea. We interpret this pattern as reflecting an increase in sea ice in the eastern Ross Sea with perhaps the establishment of a modern Roosevelt Island polynya as a local moisture source for RICE.
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Bertler, N. A. N., T. R. Naish, P. A. Mayewski, and P. J. Barrett. "Opposing oceanic and atmospheric ENSO influences on the Ross Sea Region, Antarctica." Advances in Geosciences 6 (January 9, 2006): 83–86. http://dx.doi.org/10.5194/adgeo-6-83-2006.

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Abstract. Here we discuss the cause and effect of opposing atmospheric and oceanic ENSO forcings in the Ross Sea, that lead to a net warming in the eastern Ross Sea and a net cooling in the western Ross Sea during El Niño years. During La Niña years the opposite is observed. The oceanic ENSO effect causes a ~1 K warming with a 3 month lag during El Niño years in comparison to La Niña time periods. During El Niño events, the atmospheric ENSO effect leads to a shift and weakening of the Amundsen Sea Low, causing enhanced import of colder West Antarctic air masses into the western Ross Sea. We find that this indirect ENSO effect is about one order of magnitude stronger (up to 15 K) in the western Ross Sea than the direct effect (~1 K), leading to a net cooling during El Niño and net warming during La Niña events.
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ROBERTSON, ROBIN, AIKE BECKMANN, and HARTMUT HELLMER. "M2 tidal dynamics in the Ross Sea." Antarctic Science 15, no. 1 (February 19, 2003): 41–46. http://dx.doi.org/10.1017/s0954102003001044.

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In certain regions of the Southern Ocean, tidal energy is believed to foster the mixing of different water masses, which eventually contribute to the formation of deep and bottom waters. The Ross Sea is one of the major ventilation sites of the global ocean abyss and a region of sparse tidal observations. We investigated M2 tidal dynamics in the Ross Sea using a three-dimensional sigma coordinate model, the Regional Ocean Model System (ROMS). Realistic topography and hydrography from existing observational data were used with a single tidal constituent, the semi-diurnal M2. The model fields faithfully reproduced the major features of the tidal circulation and had reasonable agreement with ten existing tidal elevation observations and forty-two existing tidal current measurements. The differences were attributed primarily to topographic errors. Internal tides were generated at the continental shelf/slope break and other areas of steep topography. Strong vertical shears in the horizontal velocities occurred under and at the edges of the Ross Ice Shelf and along the continental shelf/slope break. Estimates of lead formation based on divergence of baroclinic velocities were significantly higher than those based on barotrophic velocities, reaching over 10% at the continental shelf/slope break.
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Parker, Steven J., Darren W. Stevens, Laura Ghigliotti, Mario La Mesa, Davide Di Blasi, and Marino Vacchi. "Winter spawning of Antarctic toothfish Dissostichus mawsoni in the Ross Sea region." Antarctic Science 31, no. 05 (August 1, 2019): 243–53. http://dx.doi.org/10.1017/s0954102019000282.

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AbstractA survey of Antarctic toothfish (Dissostichus mawsoni) was conducted in the northern Ross Sea region during the winter of 2016 to document the timing and location of spawning activity, to collect biological information about reproductive status during the spawning season and to look for temporal signals in biological data from D. mawsoni that may indicate a spawning migration of mature toothfish from the continental slope region to the northern Ross Sea region. The 58 day survey showed that spawning of D. mawsoni began on some seamounts by early July. No changes were detected between winter and summer in length, age, sex ratio or condition factor distributions for D. mawsoni in the northern Ross Sea as hypothesized following a spawning migration from the slope to the northern Ross Sea region. These results suggest that the distribution of D. mawsoni in the Ross Sea is mainly accomplished through ontogenetic migration and not annual return spawning migrations.
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Cohen, Lana, Sam Dean, and James Renwick. "Synoptic Weather Types for the Ross Sea Region, Antarctica." Journal of Climate 26, no. 2 (January 15, 2013): 636–49. http://dx.doi.org/10.1175/jcli-d-11-00690.1.

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Abstract Synoptic classifications over the Southern Ocean in the Ross Sea region of Antarctica (50°S–Antarctic coast, 150°E–90°W) have been derived from NCEP reanalysis data (1979–2011), producing a set of six synoptic types for the region. These types describe realistic synoptic conditions for the region and represent the moisture-bearing low pressure systems that circulate around Antarctica. The types are described as follows: low Bellingshausen/Amundsen (L-BA), low (L), zonal (Z), low Ross (L-R), ridge (R), and low Amundsen (L-A). Seasonal frequencies of the synoptic types reflect the seasonal zonal shift of the Amundsen Sea low (ASL) and also correlate well with the Southern Oscillation index (SOI) and the southern annular mode (SAM). Variability in the occurrences of the synoptic types L-R and L-BA indicate a shifting of the position of the ASL farther east (west) toward (away from) the Antarctic Peninsula during La Niña (El Niño) and positive (negative) SAM conditions. A joint linear regression of the SOI and SAM indices show the strongest correlations with the types L-BA and L-R in the spring and quantifies the joint forcing effect of these climate cycles on synoptic variability in the region. As a demonstration of how synoptic classification provides links between large-scale atmospheric circulation and local climate parameters, the synoptic types are related to precipitation and temperature at Roosevelt Island, an ice core site on the Ross Ice Shelf (80°S, 160°W). The synoptic types provide quantification of distinct precipitation and temperature regimes at this site, which allows for more fundamental understanding of the precipitation source regions and transport pathways that drive the variability in snow and ice proxies.
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Jeffries, M. O., A. L. Veazey, K. Morris, and H. R. Krouse. "Depositional environment of the snow cover on West Antarctic pack-ice floes." Annals of Glaciology 20 (1994): 33–38. http://dx.doi.org/10.3189/1994aog20-1-33-38.

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The depth, density, load and isotopic (δ18O) composition of the snow cover on pack-ice floes were measured in late austral summer 1992 in the eastern Ross, Amundsen and western Bellingshausen Seas. Snow-density values commonly exceeded 350 kg m-3 and some were as high as 500 kg m-3. The densification of the snow occurs quickly and is attributed to a windy environment. The high density and sometimes considerable depth of the snow on the floes accounts for loads of as much as 700 kg m-2 and resultant sea-water flooding of the underlying sea ice. Lower mean δ18O values in the Ross/Amundsen Seas snow cover suggest that the region might have a cooler climate than the Bellingshausen Sea region. Snow depths on floes in the Bellingshausen Sea region were lower than those in the Ross/Amundsen Seas region, because the Bellingshausen Sea floes were first-year ice. Possible annual units in the isotope profiles of snow, as much as 2m deep, indicate that floes in the Ross/Amundsen Seas region were 2-3 years old.
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Jeffries, M. O., A. L. Veazey, K. Morris, and H. R. Krouse. "Depositional environment of the snow cover on West Antarctic pack-ice floes." Annals of Glaciology 20 (1994): 33–38. http://dx.doi.org/10.1017/s0260305500016190.

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The depth, density, load and isotopic (δ18O) composition of the snow cover on pack-ice floes were measured in late austral summer 1992 in the eastern Ross, Amundsen and western Bellingshausen Seas. Snow-density values commonly exceeded 350 kg m-3and some were as high as 500 kg m-3. The densification of the snow occurs quickly and is attributed to a windy environment. The high density and sometimes considerable depth of the snow on the floes accounts for loads of as much as 700 kg m-2and resultant sea-water flooding of the underlying sea ice. Lower mean δ18O values in the Ross/Amundsen Seas snow cover suggest that the region might have a cooler climate than the Bellingshausen Sea region. Snow depths on floes in the Bellingshausen Sea region were lower than those in the Ross/Amundsen Seas region, because the Bellingshausen Sea floes were first-year ice. Possible annual units in the isotope profiles of snow, as much as 2m deep, indicate that floes in the Ross/Amundsen Seas region were 2-3 years old.
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Nigro, Melissa A., John J. Cassano, and Shelley L. Knuth. "Evaluation of Antarctic Mesoscale Prediction System (AMPS) cyclone forecasts using infrared satellite imagery." Antarctic Science 24, no. 2 (October 17, 2011): 183–92. http://dx.doi.org/10.1017/s0954102011000745.

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AbstractThe Antarctic coast is an area of high cyclonic activity. Specifically, the regions of Terra Nova Bay, in the western Ross Sea, and Byrd Glacier, in the western Ross Ice Shelf, are prone to cyclone development. The United States, New Zealand, and Italian Antarctic programmes conduct extensive research activities in the region of the western Ross Sea. Due to the harsh weather conditions associated with the cyclonic systems that occur in this region and the abundant research activities in the area, it is important to be able to accurately predict the timing, location and strength of cyclones in this sector of Antarctica. This study evaluates the ability of the Antarctic Mesoscale Prediction System (from 2006–09) to accurately forecast cyclones in the region of the western Ross Sea by comparing the Antarctic Mesoscale Prediction System forecasts to cyclones identified in infrared satellite imagery. The results indicate that the Antarctic Mesoscale Prediction System is able to accurately predict the presence of cyclones about 40% of the time (at a minimum) and the presence of no cyclones about 70% of the time.
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Luyendyk, Bruce P., Christopher C. Sorlien, Douglas S. Wilson, Louis R. Bartek, and Christine S. Siddoway. "Structural and tectonic evolution of the Ross Sea rift in the Cape Colbeck region, Eastern Ross Sea, Antarctica." Tectonics 20, no. 6 (December 2001): 933–58. http://dx.doi.org/10.1029/2000tc001260.

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Dissertations / Theses on the topic "Ross Sea Region"

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Maher, P. T. "Footsteps on the Ice: visitor experiences in the Ross Sea Region, Antarctica." Diss., Lincoln University, 2010. http://hdl.handle.net/10182/1369.

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Antarctica is one of the most beautiful and remote places on the planet. The moniker of being the highest, driest, coldest, iciest, windiest, most remote continent, surrounded by the stormiest ocean is well deserved, yet it also acts as quite a draw for visitors. Despite the fact that visitor numbers have been steadily rising for the past 15 years, very little is empirically known about the experience these visitors have, particularly outside of the Antarctic Peninsula region. This lack of understanding is particularly detrimental from the perspective of visitor management, as is being discovered by agencies worldwide. As such, the aim of this thesis is to report on a study of visitor experiences in the Ross Sea region of Antarctica. Visitors are defined as those who come into physical contact with the continent, and whose primary activity and purpose is simply "being there." Visitors are a wider population than just commercial tourists aboard cruise ships; visitors are not passengers on commercial overflights, the scientists or base and support staff. Experience is defined as a longitudinal period—looking at visitors well in advance of their visit, throughout their time on site, and following up back at their homes. The Ross Sea region is essentially equivalent to New Zealand's Ross Dependency, a section of the Antarctic "pie" from the South Pole to 60°S, bounded by approximately 150°E and 150°W. Using a three-phase methodology to examine the cycle of experience, the purpose of this study is to compare groups of visitors with four organisations through this cycle, and analyse for change or transition as a result of their visit. The visitors were participants, to varying degrees, in a number of data-gathering methods during the 2002–2003 or 2003–2004 seasons. Such methods included: self-administered surveys sent to the respondents' home (up to three months in advance of the trip); personal narratives and journals while on the trip (regardless of trip length; 4–28 days); in-depth interviews held in Christchurch directly before and after the trip when possible; and email surveys (two to three months following the visit). In 2003–2004, a supplemental season of data was collected that included a researcher familiarisation visit, participant observation, and informal interviews at Scott Base. These supplemental data helped shape the researcher's own thoughts and thus comments in the Discussion sections. Results indicate both similarities and differences as compared to previous research; key findings include: scenery was a strong motivator and component of image; expectations were for a safe and professional learning; mood was positive throughout all phases; visitation was both acceptable and problematic; the environment was important, even in advance of the visit; education was an essential benefit of the visit; the Ross Sea region was an impressive and awe-inspiring locale; organisational differences were apparent when discussing people and the role of transportation to the continent; historic huts were uniformly amazing sites for the feelings they instil; expectations were virtually always exceeded; awareness changed over the experience; sharing of awareness and teaching from one's learning had occurred; action may or may not have occurred on various specific issues, but the label of ambassador was respondent-perceived to be acceptable. This study concludes with a number of implications for theory, methods, and logistics, which will hopefully lead to future research that is much wider in scope (geographically), but equally inclusive in terms of methods and ability to utilize and critique theories built outside of purely tourism research.
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Downer, Joshua, and n/a. "The influence of ocean waves on the distribution of sea ice in an MIZ." University of Otago. Department of Mathematics & Statistics, 2005. http://adt.otago.ac.nz./public/adt-NZDU20070202.120522.

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A marginal ice zone (MIZ) is characterised by distinct ice floes and its direct exposure to the open ocean. Sea ice is typically described as a continuous material but this description can be inappropriate in an MIZ due to the granular nature of the ice cover and the scale of processes acting on the ice floes. In this thesis, the kinematic behaviour of sea ice in an MIZ modelled as a granular material is investigated with an emphasis on the influence of ocean waves. The kinematic behaviour of a set of ice floes subject to ocean wave forcing was recorded in an experiment conducted in the Ross Sea. Kinematic data were recorded from each ice floe using a GPS receiver, tri-axial accelerometer, and compass. The data show (1) the influence of wave forcing and (2) collisions between neighbouring ice floes. It was also discovered that the GPS receivers were able to resolve the effects of ocean wave forcing despite their poor absolute accuracy. The number density and normalised structure factor (NSF) are introduced to describe the spatial structure of a set of ice floes. Four idealised distributions (in 1D and 2D) are analysed to gain insight into the way that different factors determine the shape of the NSF. It is shown that (1) a significant sinusoidal deviation causes a peak in the NSF, (2) ordered structure dominates low spatial frequencies, and (3) disorder dominates high spatial frequencies. A comparison of the contributions from these different factors is used to estimate the significance of a sinusoidal deviation in the positions of the ice floes. A granular model of an MIZ is developed using a novel set of equations of motion to examine the effect of ocean wave forcing. The equations of motion are derived for small ice floes and allows forcing by multiple waves. These equations predict a transient, wave-induced torque, which can be sustained by the application of a second force to the ice floe. Torque induced by the interaction of two forces on an ice floe may be a general feature of sea ice motion. The number density and NSF are used to analyse the distribution of ice floes in the granular model. At low solids-fractions the number density is correlated at the frequency of the wave forcing. As the solids-fraction is increased this correlation is destroyed by collisions between the ice floes and new correlations are created that are related to the packing structure of the ice floes. When the number density is weighted by the velocity of the ice floes, the correlations between floes are related to the convolution of the wave velocity field and the number density. These correlations may be incorporated into the thickness distribution of large-scale models using the maximum entropy method. The granular model was also examined as a percolating network of contacts and it was found that percolation was more likely to occur along the crest of a wave than in the direction of propagation.
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Boyd, Lauren Winifred Emily Bartek Louis Robert. "Contrasting sub-ice shelf, subglacial and glaciomarine deposition at the Ross Ice Shelf edge implications for the glacial history of the Ross Sea Region, Antarctica /." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2008. http://dc.lib.unc.edu/u?/etd,2075.

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Thesis (M.S.)--University of North Carolina at Chapel Hill, 2008.
Title from electronic title page (viewed Feb. 17, 2009). "... in partial fulfillment of the requirements for the degree of Master of Science in the Department of Geological Sciences." Discipline: Geology; Department/School: Geological Sciences.
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Begum, Ashrafi. "Taxonomic studies of terrestrial yellow-green (Heterokontophyta, xanthophyceae) and green (Chlorophyta) algae from the Ross Sea regions, Antarctica." Thesis, University of Canterbury. Zoology, 1999. http://hdl.handle.net/10092/5675.

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Terrestrial xanthophycean and chlorophyte algae have been studied at widespread Antarctic localities. All published literature (1847 to 1998) is reviewed on chlorophyte and xanthophycean algae from terrestrial and non-marine aquatic habitats of Maritime and Continental Antarctica. A checklist of all terrestrial and freshwater algae has been compiled from all literature from 1847 to 1998. This has shown that their diversity is not fully known because of inadequacy of collections and analyses of samples. We still have insufficient base-line information about the morphological diversity of algae in Antarctica, and particularly Ross Sea regions. By detailed examination of cultured strains from the Ross Sea regions, the present study aims to contribute to the resolution of the following hypothesis: "The terrestrial algal flora of Antarctica does not comprise cosmopolitan species". The goals of the study were to: 1) provide detailed descriptions of the vegetative and reproductive characteristics of unknown, or previously poorly known, unicellular xanthophycean, and unicellular and filamentous chlorophyte algae using light and electron microscopy, 2) use isozymes to compare the genotypes of Antarctic Botrydiopsis and Chlorellidium strains with similar strains isolated from New Zealand and those in culture collections from Europe, and 3) investigate carotenoid pigments as taxonomic characters within Botrydiopsis and Chlorellidium. Each of 39 species (7 species in 3 genera from Xanthophyceae and 32 species in 14 genera from Chlorophyta) have been described and illustrated with camera lucida drawings and photomicrographs. There are 25 new records of chlorophyte and four new records of xanthophycean species for Antarctica. In addition, TEM has been used for the first time for 14 species. In three genera of Xanthophyceae and in Stichococcus TEM has revealed characteristics which are impossible to observe in sufficient detail by LM. The phenetic analysis on morphological data shows that Botrydiopsis and Chlorellidium exhibit wide morphological heterogeneity. Isozymes have not distinguished Botrydiopsis, Botryochloris and Chlorellidium. Pigment analysis has not revealed diversity at species level. Phenetic analysis of morphological data is not congruent with isozyme data and neither analysis is in agreement with the traditional system of classification. It is suggested that different techniques, e.g.18S rRNA gene sequencing should be used to examine present species concepts.
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Books on the topic "Ross Sea Region"

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Harrowfield, David L. Icy heritage: The historic sites of the Ross Sea region, Antarctica. Christchurch, N.Z: Antarctic Heritage Trust, 1995.

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Warren, Guyon. The daily journal of an Antarctic explorer 1956-1958. Nelson, New Zealand: Copy Press Books, 2014.

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T, Hatherton, ed. Antarctica: The Ross Sea region. Wellington: DSIR Pub., 1990.

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J, Waterhouse Emma, and Antarctica New Zealand, eds. Ross Sea region 2001: A state of the environment report for the Ross Sea region of Antarctica. Christchurch, N.Z: New Zealand Antarctic Institute (Antarctica New Zealand), 2001.

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Hatherton, Trevor. Antarctica: The Ross Sea Region (Dsir Information Series, No. 165). Univ of Washington Pr, 1991.

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Maschner, Herbert. Archaeology of the Eastern Aleut Region. Edited by Max Friesen and Owen Mason. Oxford University Press, 2016. http://dx.doi.org/10.1093/oxfordhb/9780199766956.013.21.

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The prehistory of the eastern Aleut region is one of the most convoluted and dynamic cultural trajectories in the Arctic region. Situated on the one of the world’s most productive fisheries, it is on the hinge point between the often-violent North Pacific and Bering Sea climate regimes. The richest marinescapes in the Pacific region gave rise to the largest human populations, the largest villages, and the most socially complex organizations in the Eskimo-Aleut world. But these villages rose and fell, and even the largest were subject to periodic cultural collapse. Climate, marine productivity, and boating technology are the key factors in understanding the archaeology of this part of Alaska.
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Polar Research Program (U.S.), ed. Sea ice on the Southern Ocean: Final technical report, grant # NAGW-3362. [Washington, DC?]: Polar Research Program, Office of Mission to Planet Earth, National Aeronautics and Space Administration, 1998.

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Polar Research Program (U.S.), ed. Sea ice on the Southern Ocean: Final technical report, grant # NAGW-3362. [Washington, DC?]: Polar Research Program, Office of Mission to Planet Earth, National Aeronautics and Space Administration, 1998.

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Marsh, Leslie L. Contesting the Boundaries of Belonging in the Films of Ana Carolina Teixeira Soares. University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252037252.003.0003.

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This chapter focuses on Ana Carolina's Mar de Rosas (Sea of Roses, 1977), Das Tripas Coração (Heart and Guts, 1982), and Sonho de Valsa (Dream Waltz, 1987). At a time when it was untenable to express her feminist views by way of a realist register, all three films develop a surrealist mode of expression. Indeed, Carolina's films adapt a surrealist mode of representation to critique repressive ideological constructions of femininity and seek the emancipation of the female psyche. Ultimately, her trilogy critiques those institutions and established beliefs through which presumably good, moral citizens are manufactured—the family, education, religion, romantic love, honoring the father, and the like—and reflects a desire for a new sociability and a new political system in which women are full, equal members. The gesture toward freedom in these films resonates with the second-wave women's movements and the larger struggle to escape a repressive authoritarian regime in the 1970s and 1980s.
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L, Gordon Arnold, and United States. National Aeronautics and Space Administration., eds. Antarctic ocean polynyas: Seminannual status report, NAGW 1344, 01 Jul 88 - 01 Jan 89. Palisades, New York: Lamont-Doherty Geological Observatory of Columbia University, 1989.

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Book chapters on the topic "Ross Sea Region"

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Colacino, M., E. Piervitali, and P. Grigioni. "Climatic Characterization of the Terra Nova Bay Region." In Ross Sea Ecology, 15–26. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-642-59607-0_2.

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Aislabie, Jackie, and James G. Bockheim. "Soils of the Ross Sea Region, Metagenomics of." In Encyclopedia of Metagenomics, 609–16. Boston, MA: Springer US, 2015. http://dx.doi.org/10.1007/978-1-4899-7475-4_139.

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Aislabie, Jackie, and James G. Bockheim. "Soils of the Ross Sea Region, Metagenomics of." In Encyclopedia of Metagenomics, 1–9. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-6418-1_139-1.

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Hewitt, Allan E., Megan R. Balks, and David J. Lowe. "Soils in the Ross Sea Region of Antarctica." In The Soils of Aotearoa New Zealand, 267–87. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-64763-6_17.

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Hambrey, Michael J., and Peter J. Barrett. "Cenozoic sedimentary and climatic record, Ross Sea region, Antarctica." In The Antarctic Paleoenvironment: A Perspective on Global Change: Part Two, 91–124. Washington, D. C.: American Geophysical Union, 1993. http://dx.doi.org/10.1029/ar060p0091.

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Davey, F. J., and G. Brancolini. "The Late Mesozoic and Cenozoic Structural Setting of the Ross Sea Region." In Geology and Seismic Stratigraphy of the Antarctic Margin, 167–82. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/ar068p0167.

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O’Neill, Tanya A., Megan R. Balks, and Jerónimo López-Martínez. "The Effectiveness of Environmental Impact Assessments on Visitor Activity in the Ross Sea Region of Antarctica." In New Issues in Polar Tourism, 87–110. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-5884-1_6.

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Smith, Walker O., David G. Ainley, Riccardo Cattaneo-Vietti, and Eileen E. Hofmann. "The Ross Sea Continental Shelf: Regional Biogeochemical Cycles, Trophic Interactions, and Potential Future Changes." In Antarctic Ecosystems, 213–42. Chichester, UK: John Wiley & Sons, Ltd, 2012. http://dx.doi.org/10.1002/9781444347241.ch7.

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Smith, Raymond C., and William R. Fraser. "Climate Variability and Ecological Response of the Marine Ecosystem in the Western Antarctic Peninsula (WAP) Region." In Climate Variability and Ecosystem Response in Long-Term Ecological Research Sites. Oxford University Press, 2003. http://dx.doi.org/10.1093/oso/9780195150599.003.0018.

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The Antarctic Peninsula, a relatively long, narrow extension of the Antarctic continent, defines a strong climatic gradient between the cold, dry continental regime to its south and the warm, moist maritime regime to its north. The potential for these contrasting climate regimes to shift in dominance from season to season and year to year creates a highly variable environment that is sensitive to climate perturbation. Consequently, long-term studies in the western Antarctic Peninsula (WAP) region, which is the location of the Palmer LTER (figure 9.1), provide the opportunity to observe how climate-driven variability in the physical environment is related to changes in the marine ecosystem (Ross et al. 1996; Smith et al. 1996; Smith et al. 1999). This is a sea ice–dominated ecosystem where the annual advance and retreat of the sea ice is a major physical determinant of spatial and temporal change in its structure and function, from total annual primary production to the breeding success and survival of seabirds. Mounting evidence suggests that the earth is experiencing a period of rapid climate change, and air temperature records from the last half century confirm a statistically significant warming trend within the WAP during the past half century (King 1994; King and Harangozo 1998; Marshall and King 1998; Ross et al. 1996; Sansom 1989; Smith et al. 1996; Stark 1994; van den Broeke 1998; Weatherly et al. 1991). Air temperature–sea ice linkages appear to be very strong in the WAP region (Jacka 1990; Jacka and Budd 1991; King 1994; Smith et al. 1996; Weatherly et al. 1991), and a statistically significant anticorrelation between air temperatures and sea ice extent has been observed for this region. Consistent with this strong coupling, sea ice extent in the WAP area has trended down during this period of satellite observations, and the sea ice season has shortened. In addition, both air temperature and sea ice have been shown to be significantly correlated with the Southern Oscillation Index (SOI), which suggests possible linkages among sea ice, cyclonic activity, and global teleconnections.
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"Sweden and Algeria in the Travel Writing of Anna Maria Roos, 1905–1909." In Nineteenth-Century Nationalisms and Emotions in the Baltic Sea Region, 237–59. BRILL, 2021. http://dx.doi.org/10.1163/9789004467323_011.

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Conference papers on the topic "Ross Sea Region"

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Millikin, Alexie, Simon Cox, Christine S. Siddoway, and Belinda Smith-Lyttle. "DIGITAL GEOLOGICAL DATASET FOR THE ROSS SEA REGION, ANTARCTICA, AND OTHER MAPPING INITIATIVES OF THE ANTARCTIC GEOMAP PROJECT." In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-304997.

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Chappell, Justin, Phil Ligrani, Sri Sreekanth, Terry Lucas, and Edward Vlasic. "Aerodynamic Performance of Suction-Side Gill Region Film Cooling." In ASME Turbo Expo 2008: Power for Land, Sea, and Air. ASMEDC, 2008. http://dx.doi.org/10.1115/gt2008-50799.

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The performance of suction-side gill region film cooling is investigated using the University of Utah Transonic Wind Tunnel and a simulated turbine vane in a two-dimensional cascade. The effects of film cooling hole orientation, shape, and number of rows, and their resulting effects on the aerodynamic losses, are considered for four different hole configurations: round axial (RA), shaped axial (SA), round radial (RR), and round compound (RC). The mainstream Reynolds number based on axial chord is 500,000, exit Mach number is 0.35, and the tests are conducted using the first row of holes, or both rows of holes at blowing ratios of 0.6 and 1.2. Carbon dioxide is used as the injectant to achieve density ratios of 1.77 to 1.99 similar to values present in operating gas turbine engines. Presented are local distributions of total pressure loss coefficient, local normalized exit Mach number, and local normalized exit kinetic energy. Integrated Aerodynamic Losses (IAL) increase anywhere from 4 to 45 percent compared to a smooth blade with no film injection. The performance of each hole type depends upon the airfoil configuration, film cooling configuration, mainstream flow Mach number, number of rows of holes, density ratio, and blowing ratio, but the general trend is an increase in IAL as either the blowing ratio or the number of rows of holes increase. In general, the largest total pressure loss coefficient Cp magnitudes and the largest IAL aerodynamic losses are generally present at any particular wake location for the round radial RR or shaped axial SA configurations, regardless of the film cooling blowing ratio and number of holes. The SA shaped axial holes also generally produce the highest local peak Cp magnitudes. IAL magnitudes are generally lowest with the RA hole configuration. A one-dimensional mixing loss correlation for normalized IAL values is also presented, which matches most of the both rows data for RA, SA, RR, and RC hole configurations. The equation also provides good representation of the RA, RC, and RR first row data sets.
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Narzary, Diganta P., Zhihong Gao, Shantanu Mhetras, and Je-Chin Han. "Effect of Unsteady Wake on Film-Cooling Effectiveness Distribution on a Gas Turbine Blade With Compound Shaped Holes." In ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-27070.

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The effect of fan-shaped, laid-back compound angled cooling holes placed along the span of a fully-cooled high pressure turbine blade in a 5-blade linear cascade on film cooling effectiveness is studied using the Pressure Sensitive Paint (PSP) technique. Four rows of shaped film cooling holes are provided on the pressure side while two such rows are provided on the suction side of the blade. Three rows of cylindrical holes are drilled at 30° to the surface on the leading edge to capture the effect of showerhead film coolant injection. The coolant is injected at four different average blowing ratios of 0.3, 0.6, 0.9 and 1.2. Presence of wake due to upstream vanes is studied by placing a periodic set of rods upstream of the test blade. The wake is generated using 4.8mm diameter rods. The wake rods can be clocked by changing their stationary positions in front of the test blade to simulate a progressing wake. Effect of wake is recorded at four phase locations with equal intervals. The free stream Reynolds number, based on the axial chord length and the exit velocity, is 750,000 and the inlet and the exit Mach numbers are 0.27 and 0.44, respectively resulting in a blade pressure ratio of 1.14. Turbulence intensity level at the cascade inlet is 6% with an integral length scale of around 5cm. Results show that the fan-shaped, laid-back compound angled holes produce uniform and wide coolant coverage on the suction side except for those regions affected by the passage and tip leakage vortices. The advantage of compound shaped hole design is seen from the higher effectiveness values on the suction side compared to that of the compound cylindrical holes. The presence of a stationary upstream wake can result in lower film cooling effectiveness on the blade surface. Variation of blowing ratio from 0.3 to 1.2 show more or less uniform increment in effectiveness increase on the pressure side, whereas on the suction side, the increment shows signs of saturation beyond M = 0.6.
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Oo, Aung N., and Chan Y. Ching. "Turbulence and Vorticity Effects on Stagnation Region Heat Transfer." In ASME Turbo Expo 2001: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/2001-gt-0168.

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An experimental study has been performed to investigate the influences of freestream turbulence, including the vorticity field, on the stagnation region heat transfer. A heat transfer model with a cylindrical leading edge was tested in a low speed wind tunnel at Reynolds numbers ranging from 67,750 to 142,250 based on leading edge diameter of the model. Grids of parallel rods were used to generate the freestream turbulence with well-defined primary vortex lines. The grids were placed at several locations upstream of the heat transfer model in orientations where the rods were perpendicular and parallel to the stagnation line. The turbulence intensity and the ratio of integral length scale to leading edge diameter were in the range of 3.93 to 11.78 % and 0.07 to 0.7, respectively. The measured heat transfer data and freestream turbulence characteristics are compared with existing correlation models. A new correlation for the stagnation line heat transfer has been developed that includes the spanwise fluctuating vorticity components.
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Gu¨mmer, V., M. Goller, and M. Swoboda. "Numerical Investigation of Endwall Boundary Layer Removal on Highly-Loaded Axial Compressor Blade Rows." In ASME Turbo Expo 2005: Power for Land, Sea, and Air. ASMEDC, 2005. http://dx.doi.org/10.1115/gt2005-68699.

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This paper presents results of numerical investigations carried out to explore the benefit of endwall boundary layer removal from critical regions of highly-loaded axial compressor blade rows. At the loading level of modern aero-engine compressors the performance is primarily determined by three-dimensional flow phenomena occuring in the endwall regions. 3DNS simulations were conducted on both a rotor and a stator test case in order to evaluate basic effects and the practical value of bleeding air from specific locations at the casing endwall. The results of the numerical survey demonstrated substantial benefits of relatively small bleed rates to the local flow field and to the performance of the two blade rows. On the rotor, boundary layer fluid was removed from the main flow path through an axisymmetric slot in the casing over the rotor tip. This proved to give some control over the tip leakage vortex flow and the associated loss generation. On the stator, boundary layer fluid was taken from the flow path through a single bleed hole within the passage. Two alternative off-take configurations were evaluated, revealing a large impact of the bleed hole shape and location on the cross-passage flow and the suction side corner separation. On both blade rows investigated, rotor and stator, boundary layer removal resulted in a reduction of local reverse flow, blockage and losses in the respective near-casing region. This paper gives insight into changes occuring in the 3D passage flow field near the casing and summarises the effects on the radial matching and pitchwise-averaged performance parameters, namely loss and deviation of the rotor and stator when suction is active. Primary focus is put on the aerodynamics in the blade rows in the main flow path; details of the internal flow structure within the bleed off-take cavities/ports are not discussed here.
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Kusterer, Karsten, Torsten Hagedorn, Dieter Bohn, Takao Sugimoto, and Ryozo Tanaka. "Improvement of a Film-Cooled Blade by Application of the Conjugate Calculation Technique." In ASME Turbo Expo 2005: Power for Land, Sea, and Air. ASMEDC, 2005. http://dx.doi.org/10.1115/gt2005-68555.

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The conjugate calculation technique has been used for the three-dimensional thermal load prediction of a film-cooled test blade of a modern gas turbine. Thus, it becomes possible to take into account the interaction of internal flows, external flow, and heat transfer without the prescription of heat transfer coefficients. The numerical models consist of all internal flow passages and cooling hole rows including shaped holes. Based on the results, deficiencies of the test configuration close to the leading edge region and in the blade tip region have been detected, which lead to hot spots and surface areas of high thermal load. These regions of high thermal load have been confirmed by thermal index paint measurements in good agreement to the conjugate calculation results. Based on the experimental and numerical results, recommendations for the improvement of the blade cooling were derived and an improved blade cooling configuration has been designed. The conjugate calculation results as well as new measurement data show that the changes in the cooling design have been successful with respect to cooling performance. Regions of high thermal load have vanished and effective cooling is reached for all critical parts of the test blade.
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Bailey, J. C., and R. S. Bunker. "Local Heat Transfer and Flow Distributions for Impinging Jet Arrays of Dense and Sparse Extent." In ASME Turbo Expo 2002: Power for Land, Sea, and Air. ASMEDC, 2002. http://dx.doi.org/10.1115/gt2002-30473.

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Full-surface heat transfer coefficient distribution measurements have been made using a liquid crystal thermography technique for several cases of normally impinging jet arrays onto a flat, smooth surface within a region bounded on three sides. While the impingement target plate remains of a fixed size, the impingement jet array has been changed to cover a wide range of conditions, extending beyond the currently available literature data. Axial and lateral jet spacing values of x/D and y/D of 3, 6, and 9 have been used, all with square orientation and in-line jets. The jet plate-to-target surface distance z/D has been varied from 1.25 to 5.5. Jet Reynolds numbers ranged from 14,000 to 65,000. In the sparse array limiting case, the number of jet rows is four in the axial direction and three in the lateral direction. For the dense array limiting case, the number of jet rows is 26 in the axial direction and 20 in the lateral direction. Using both heat transfer and pressure distribution measurements, results are compared to the existing correlation of Florschuetz et al. [1], showing excellent agreement in regions of common parameters. In regions not previously reported in the literature, the present study extends the streamwsie row-averaged heat transfer coefficient correlation of [1] with a modified correlation for design use.
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Wang, Ting, J. Leo Gaddis, and Xianchang Li. "Mist/Steam Heat Transfer of Multiple Rows of Impinging Jets." In ASME Turbo Expo 2004: Power for Land, Sea, and Air. ASMEDC, 2004. http://dx.doi.org/10.1115/gt2004-54206.

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Internal mist/steam blade cooling technology is considered the future of high-temperature gas turbine systems that burn hydrogen or synthetic gases. This paper experimentally investigates the mist/steam heat transfer of three rows of circular jet impingement in a confined channel. Fine water droplets with an average diameter of 3-μm are generated by atomizing water through small nozzles under high pressure. The circular jets have a uniform diameter of 8-mm, and the distance between adjacent jets in a row is 3 diameters. Jets in different rows are staggered and the distance between rows is 1.5 diameters. The spacing of nozzle-to-target is 2.8 diameters. Experiments were conducted with Reynolds numbers at 7,500 and 15,000 and heat fluxes ranging from 3,350 to 13,400W/m2. The results indicate that the wall temperature significantly decreased because of mist injection. A region of high cooling enhancement is observed and more extensive than those employing one row of circular jets or a slot jet. While the details depend on flow conditions, it is seen that the enhanced region of 3-row jets is about 5 jet diameters at Re = 7,500, q” = 7.54 kW/m2, and ml/ms = 3.5%, compared to 2 jet diameters for single-row jets. The enhancement becomes negligible after a certain distance downstream. The maximum local cooling enhancement is up to 800% by injecting 3.5% of mist at low heat flux condition and 150% for high heat flux condition. The average cooling enhancement can achieve more than 100% within 2 jet-diameter distance from the stagnation line at Re = 15,000 and ml/ms = 1.5%.
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Gao, Zhihong, Diganta P. Narzary, and Je-Chin Han. "Film-Cooling on a Gas Turbine Blade Pressure Side or Suction Side With Compound Angle Shaped Holes." In ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ht2007-32098.

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The film cooling effectiveness on the surface of a high pressure turbine blade is measured using the Pressure Sensitive Paint (PSP). Four rows of fan-shaped, laid-back compound angled cooling holes are distributed on the pressure side while two such rows are provided on the suction side of the blade. The coolant is only injected to either the pressure side or suction side of the blade at five average blowing ratios from 0.4 to 1.5. Presence of wake due to upstream vanes is simulated by placing a periodic set of rods upstream of the test blade. The wake rods can be clocked by changing their stationary positions to simulate a progressing wake. Effect of wake is recorded at four phase locations with equal intervals along the pitch-wise direction. The free stream Reynolds number, based on the axial chord length and the exit velocity, is 750,000 and the inlet and the exit Mach numbers are 0.27 and 0.44, respectively, resulting in a blade pressure ratio of 1.14. Results reveal that the tip leakage vortices and endwall vortices sweep the coolant film on the suction side to the midspan region. The fan-shaped, laid-back compound angled holes produce good coolant film coverage on the suction side except for those regions affected by the secondary vortices. Due to the concave surface, the coolant trace is short and effectiveness level is low on the pressure surface. However, the pressure side acquires relatively uniform film coverage with the design of multiple rows of cooling holes. The presence of stationary upstream wake results in lower film cooling effectiveness on the blade surface. Variation of blowing ratio from 0.4 to 1.5 shows steady increase in effectiveness on the pressure side or the suction side for a given wake rod phases locations. The compound angle shaped holes outperform the compound angle cylindrical holes by the elevated film cooling effectiveness particularly at higher blowing ratios.
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Ames, F. E., and L. A. Dvorak. "The Influence of Reynolds Number and Row Position on Surface Pressure Distributions in Staggered Pin Fin Arrays." In ASME Turbo Expo 2006: Power for Land, Sea, and Air. ASMEDC, 2006. http://dx.doi.org/10.1115/gt2006-90170.

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Full surface pressure distributions over the endwall and pin in a staggered pin fin array have been acquired over a ten to one range in Reynolds numbers. These pressure distributions allow us to visualize the strong inertial pressure gradients that are responsible for driving secondary flows in pin fin passages. These strong pressure gradients include endwall regions near the pin stagnation region and near the pin at 90° from the stagnation region. Pressure distributions have been acquired on pin and endwall surfaces at eight consecutive rows using conventional static pressure measurement techniques. Pressures have been taken at 380 locations per row and, assuming symmetry, provide a well resolved visualization of surface pressure. Generally, surface and pin pressure distributions vary significantly from row to row in the entrance of the array at a given Reynolds number but stay relatively consistent after row four. Dimensionless pressure distributions are quite similar for row one for all Reynolds numbers but vary significantly at a given row downstream with Reynolds number. These data are expected to enhance our understanding of pin array fluid dynamics and to compliment full surface heat transfer data presented in a future paper.
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Reports on the topic "Ross Sea Region"

1

Arrigo, Kevin. Iron Fertilization of the Southern Ocean: Regional Simulation and Analysis of C-Sequestration in the Ross Sea. Office of Scientific and Technical Information (OSTI), March 2012. http://dx.doi.org/10.2172/1036239.

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