Journal articles: 'Prydz Bay'

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Taylor, Brian. "Prydz Bay—Riviera of Antarctica." Oceanography 19, no. 4 (December 1, 2006): 81. http://dx.doi.org/10.5670/oceanog.2006.19.

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TAYLOR, FIONA, and AMY LEVENTER. "Late Quaternary palaeoenvironments in Prydz Bay, East Antarctica: interpretations from marine diatoms." Antarctic Science 15, no. 4 (December 2003): 512–21. http://dx.doi.org/10.1017/s0954102003001639.

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Fossil diatom-bearing marine sediment cores recovered from Prydz Channel, Prydz Bay, record episodes of glacial advance and retreat in the bay. Diatom frustules are abundant, well preserved, and the species composition is diverse in two biogenic sediment units composed of siliceous diatom ooze (SMO-1 and SMO-2). Between SMO-1 and SMO-2 a terrigenous unit (T) is present, composed of muddy diamicton and sandy silty clay, which contains poorly preserved rare diatoms. The SMO units are interpreted to represent an open marine setting with seasonal sea ice cover; the T unit is interpreted to represent glacial ice expansion from the Amery Ice Shelf over the site. Based on an age model developed previously for other cores from Prydz Channel with analogous stratigraphies, we interpret our record to be late Quaternary through Holocene in age. The T unit records the Last Glacial Maximum (LGM) in Prydz Bay; the SMO-1 and SMO-2 units record interstadial episodes that are post- and pre-LGM respectively. Extinct diatom taxa in the T and SMO-2 units indicate reworked sediment sourced from two different-aged deposits. Our results provide both a new interpretation of late Quaternary deposition in Prydz Channel and support for previous studies in this region.

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Whitehead, J. M., P. G. Quilty, B. C. Mckelvey, and P. E. O’Brien. "A review of the Cenozoic stratigraphy and glacial history of the Lambert Graben—Prydz Bay region, East Antarctica." Antarctic Science 18, no. 1 (March 2006): 83–99. http://dx.doi.org/10.1017/s0954102006000083.

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The Cenozoic glacial history of East Antarctica is recorded in part by the stratigraphy of the Prydz Bay—Lambert Graben region. The glacigene strata and associated erosion surfaces record at least 10 intervals of glacial advance (with accompanying erosion and sediment compaction), and more than 17 intervals of glacial retreat (enabling open marine deposition in Prydz Bay and the Lambert Graben). The number of glacial advances and retreats is considerably less than would be expected from Milankovitch frequencies due to the incomplete stratigraphic record. Large advances of the Lambert Glacier caused progradation of the continental shelf edge. At times of extreme glacial retreat, marine conditions reached > 450 km inland from the modern ice shelf edge. This review presents a partial reconstruction of Cenozoic glacial extent within Prydz Bay and the Lambert Graben that can be compared to eustatic sea-level records from the southern Australian continental margin.

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Woehler, Eric J. "The Distribution of Seabird Biomass in the Australian Antarctic Territory: Implications for Conservation." Environmental Conservation 17, no. 3 (1990): 256–61. http://dx.doi.org/10.1017/s0376892900032409.

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The minimum total breeding seabird biomass in the Australian Antarctic Territory was estimated to be 9,971.1 t, dominated by Emperor Penguins, 3,863 t (38.7%) and Adélie Penguins, 5,825 t (58.4%). The 5° sector between 75°E and 80°E, in south-east Prydz Bay, held 35% of the total AAT seabird biomass. Prydz Bay has been shown to be an area of high productivity, and the concentration of seabird biomass in this area reflects the high biomass of prey species and the availability of nesting habitat in the Vestfold Hills, a large ice-free area adjacent to Prydz Bay. Activities associated With research stations are believed to be the only factors that have impacted on breeding seabird populations to date, but minerals activities, tourism and support facilities, and a Krill fishery, are future conservation issues that will have an impact on this major concentration of seabird biomass in East Antarctica.

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Warnock, Jonathan P., and Reed P. Scherer. "Increased diatom dissolution in Prydz Bay, East Antarctica linked to inception of the Prydz Bay gyre." Diatom Research 31, no. 2 (April 2, 2016): 161–68. http://dx.doi.org/10.1080/0269249x.2016.1182075.

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Domack, Eugene, Phil O'Brien, Peter Harris, Fiona Taylor, Patrick G. Quilty, Laura De Santis, and Benjamin Raker. "Late Quaternary sediment facies in Prydz Bay, East Antarctica and their relationship to glacial advance onto the continental shelf." Antarctic Science 10, no. 3 (September 1998): 236–46. http://dx.doi.org/10.1017/s0954102098000339.

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A marine survey in Prydz Bay, provides an unparalleled view of glacigenic and marine sedimentation across Prydz Channel and Amery Depression during the Late Quaternary. Gravity cores and a suite of eight radiocarbon dates indicate that the Late Wisconsin Glacial Maximum (LGM) was associated with grounding of a palaeo-ice shelf along the periphery of Prydz Channel. Deposition in front of the grounding line was dominated by ice-rafting. A granulated facies, containing angular clay and diamicton clasts, was producd by a combination of regelation freezing, near to the grounding line, and remelting of this basal debris in the sub-ice shelf setting. Beneath these LGM marine deposits lie two key beds of diatom ooze that are distinct in size sorting and Pliocene diatoms. These “interstadial” units can be traced across most of the Prydz Channel, and are underlain by additional glacial marine units. Debris related to the Lambert Deep is distinct from detritus from eastern Prydz Bay and deposition of these two sources within the channel oscillated during the LGM. We suggest that coastal drainage systems contributed to a limited glaciation of the shelf during the LGM, rather than direct outflow via the Lambert/Amery system. It is proposed that shelf-wide glaciation is related to the duration of glacial sea level lowstands rather than the absolute magnitude of eustatic fall during such episodes.

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Hambrey, Michael J., Birger Larsen, and Werner U. Ehrmann. "Forty million years of Antarctic glacial history yielded by Leg 119 of the Ocean Drilling Program." Polar Record 25, no. 153 (April 1989): 99–106. http://dx.doi.org/10.1017/s0032247400010391.

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AbstractDuring Leg 119 of the Ocean Drilling Program, between December 1987 and February 1988, six holes were drilled in the Kerguelen Plateau, southern Indian Ocean, and five in Prydz Bay at the mouth of the Amery Ice Shelf, on the East Antarctic continental shelf. The Prydz Bay holes, reported here, form a transect from the inner shelf to the continental slope, recording a prograding sequence of possible Late Paleozoic to Eocene continental sediments of fluvial aspect, followed by several hundred metres of Early Oligocene (possibly Middle Eocene) to Quaternary glaciallydominated sediments. This extends the known onset of large-scale glaciation of Antarctica back to about 36–40 million years ago, the sedimentary record suggesting that a fully developed East Antarctic Ice Sheet reached the coast at Prydz Bay at this time, and was more extensive than the present sheet. Subsequent glacial history is complex, with the bulk of sedimentation in the outer shelf taking place close to the grounding line of an extended Amery Ice S helf. However, breaks in the record and intervals of no recovery may hide evidence of periods of glacial retreat.

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Hosie, G. W. "Distribution and abundance of euphausiid larvae in the Prydz Bay region, Antarctica." Antarctic Science 3, no. 2 (June 1991): 167–80. http://dx.doi.org/10.1017/s0954102091000202.

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In January 1985 a net sampling survey was carried out on the distribution and abundance of euphausiid larvae in the Prydz Bay region. Euphausia superba occurred in low abundance, probably due to sampling preceding the main spawning period. Thysanoessa macrura occurred throughout the study area in consistently high abundance. Euphausia crystallorophias was marginally more abundant within its restricted range. Distinct north-south variations in larval age and developmental stages of T. macrura were observed indicating regional differences in spawning. Euphausia frigida was mainly confined to the upper 200 m of the Antarctic Circumpolar Current. E. superba larvae produced north of the shelf break, between 70°–83°E, moved north-east into the Antarctic Circumpolar Current. Larvae originating on the shelf moved rapidly west in the East Wind drift. E. crystallorophias had the same westward dispersion, but some larvae appeared to return eastward via the Prydz Bay Gyre and remain in the region. The data indicate that most E. superba larvae, providing they survive injuries cold temperature an food deprivation, will leave the area, suggests that Prydz Bay krill may not be a self maintaining stock.

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Yang, Qingxuan, Jiwei Tian, Wei Zhao, and Lingling Xie. "Turbulent dissipation and mixing in Prydz Bay." Chinese Journal of Oceanology and Limnology 31, no. 2 (March 2013): 445–53. http://dx.doi.org/10.1007/s00343-013-2040-3.

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10

Hou, Saisai, and Jiuxin Shi. "Variability and Formation Mechanism of Polynyas in Eastern Prydz Bay, Antarctica." Remote Sensing 13, no. 24 (December 15, 2021): 5089. http://dx.doi.org/10.3390/rs13245089.

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Based on satellite remote sensing, several polynyas have been found in Prydz Bay, East Antarctica. Compared with the Mackenzie Bay Polynya, the only polynya in the west, the polynyas in eastern Prydz Bay have a larger area and higher ice production, but have never been studied individually. In this study, four recurrent polynyas were identified in eastern Prydz Bay from sea ice concentration data during 2002–2011. Their areas generally exhibit synchronous temporal variations and have good correlation with wind speed, which indicates that they are primarily wind-driven polynyas that need at least one stationary ice barrier to block the inflow of drifting sea ice. The components of the ice barriers of these four polynyas were identified through comparison of satellite remote sensing visible images and synthetic aperture radar images. All types of fast ice, including landfast ice, offshore fast ice and ice fingers serving as ice barriers for these polynyas are anchored by an assemblage of small icebergs and have an approximately year-round period of variations that also regulates the variability of polynyas. The movement and grounding of giant icebergs near the polynyas significantly affects the development of the polynyas. The results of this study illustrate the important impact of icebergs on Antarctic wind-driven polynyas and the formation of dense shelf water.

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11

Wang, Haozhuang, Zhihua Chen, Kunshan Wang, Helin Liu, Zheng Tang, and Yuanhui Huang. "Characteristics of heavy minerals and grain size of surface sediments on the continental shelf of Prydz Bay: implications for sediment provenance." Antarctic Science 28, no. 2 (November 24, 2015): 103–14. http://dx.doi.org/10.1017/s0954102015000498.

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AbstractData on grain size and heavy mineral composition for surface sediments on the Prydz Bay continental shelf was analysed to identify sediment features and provenance. The grain size composition of surface sediments indicate spatial variations in the glaciomarine environment and the key factors influencing sedimentation, which on the shelf include topography/water depth, currents and icebergs. The study area was divided into two sections by Q-type factor analysis: section I included Prydz Channel, Amery Basin and Svenner Channel, and section II included Four Ladies Bank, Fram Bank and the area in front of the Amery Ice Shelf. Sedimentation in section I is mainly controlled by currents and topography/water depth. However, in section II, icebergs/floating ice masses, the Amery Ice Shelf and currents have prominent effects on sedimentation. The heavy mineral composition indicates that surface sediments on the eastern side of the bay, including Four Ladies Bank, are primarily derived from Princess Elizabeth Land. Sediments in the area in front of the Amery Ice Shelf, Svenner Channel, Amery Basin and Prydz Channel have a mixed source from the eastern regions around the bay, including the Prince Charles Mountains and Princess Elizabeth Land. The contribution from Mac. Robertson Land to sediment at Fram Bank is limited.

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Xu, Suqing, Keyhong Park, Yanmin Wang, Liqi Chen, Di Qi, and Bingrui Li. "Variations in the summer oceanic <i>p</i>CO<sub>2</sub> and carbon sink in Prydz Bay using the self-organizing map analysis approach." Biogeosciences 16, no. 3 (February 13, 2019): 797–810. http://dx.doi.org/10.5194/bg-16-797-2019.

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Abstract. This study applies a neural network technique to produce maps of oceanic surface pCO2 in Prydz Bay in the Southern Ocean on a weekly 0.1∘ longitude × 0.1∘ latitude grid based on in situ measurements obtained during the 31st CHINARE cruise from February to early March 2015. This study area was divided into three regions, namely, the “open-ocean” region, “sea-ice” region and “shelf” region. The distribution of oceanic pCO2 was mainly affected by physical processes in the open-ocean region, where mixing and upwelling were the main controls. In the sea-ice region, oceanic pCO2 changed sharply due to the strong change in seasonal ice. In the shelf region, biological factors were the main control. The weekly oceanic pCO2 was estimated using a self-organizing map (SOM) with four proxy parameters (sea surface temperature, chlorophyll a concentration, mixed Layer Depth and sea surface salinity) to overcome the complex relationship between the biogeochemical and physical conditions in the Prydz Bay region. The reconstructed oceanic pCO2 data coincide well with the in situ pCO2 data from SOCAT, with a root mean square error of 22.14 µatm. Prydz Bay was mainly a strong CO2 sink in February 2015, with a monthly averaged uptake of 23.57±6.36 TgC. The oceanic CO2 sink is pronounced in the shelf region due to its low oceanic pCO2 values and peak biological production.

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Jawak, Shridhar Digambar, Meghna Sengupta, and Alvarinho Joaozinho Luis. "Detection of iceberg calving events in Prydz Bay, East Antarctica during 2013 – 2015 using LISS-IV/IRS-P6 satellite data." Czech Polar Reports 8, no. 2 (July 1, 2018): 275–85. http://dx.doi.org/10.5817/cpr2018-2-23.

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This study discusses the calving event took place in Prydz Bay of East Antarctica during the epoch of 2013–2015 using high resolution multispectral data from Indian Linear Imaging Self Scanning Sensor (LISS-IV) aboard IRS-P6 satellite. The present study has been conducted on Larsemann Hills, Prydz Bay, East Antarctica. The two LISS-IV images (5.8 m spatial resolution) acquired specifically 384 days apart (December 31, 2013 and January 19, 2015) were utilized to study the significant changes that have occurred in icebergs during this short epoch. A total of 369 common icebergs present in both images were identified for analysing the changes in their dimensions because of surface melting. All of these icebergs were found to have lost mass because of surface melting and ocean forced base melting; therefore, they have reduced in dimension depicted by 12.51% lapse in terms of surface area. In addition, the coastline was visually observed to have retracted, instigated by calving events from the polar ice sheet and generation of new icebergs in Prydz Bay. The average drift distance of these newly formed icebergs from the coastline was found to be 51.59 m. Our analysis estimates that the total number of icebergs decreased by 70, suggesting either the complete disintegration or significant drifting of these icebergs away from the coast during 2013–2015 period.

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Truswell, E. M., and M. K. Macphail. "Polar forests on the edge of extinction: what does the fossil spore and pollen evidence from East Antarctica say?" Australian Systematic Botany 22, no. 2 (2009): 57. http://dx.doi.org/10.1071/sb08046.

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Diverse pollen and spore assemblages, spanning the Late Eocene preglacial–glacial transition, have been recovered from Ocean Drilling Program cores from Prydz Bay, East Antarctica. These microfloras are mostly in situ and provide an unparalleled record of terrestrial plant communities growing in Antarctica during the earliest stages of ice-cap formation. The evidence provides a basis for assessing the phytogeographic relationships of the Antarctic floras with other high-latitude floras in the southern hemisphere, including possible migration routes for some taxa. Preliminary studies (Macphail and Truswell 2004a) suggested the Late Eocene vegetation at Prydz Bay was floristically impoverished rainforest scrub, similar to Nothofagus–gymnosperm communities found near the climatic treeline in Patagonia and Tasmania. Re-evaluation of the microfloras indicates the diversity of shrubs, especially Proteaceae, was underestimated and the Late Eocene vegetation was a mosaic of dwarfed (krumholtz) trees, scleromorphic shrubs and wetland herbs, analogous to the taiga found in the transition zone between the boreal conifer forest and tundra biomes across the Arctic Circle. Microfloras similar to although much less diverse than the Prydz Bay assemblages occur in coreholes from the Ross Sea region on the opposite side of Antarctica. Interpretation of the latter is complicated by reworking and low yields but the combined evidence points to the collapse of taller woody ecosystems during the Eocene–Oligocene transition and their replacement by tundra-like or fell-field vegetation during the Oligocene and Neogene. This temperature-forced regression seems to have been broadly synchronous across the continent. The high-palaeolatitude location (~70°S) means that the Prydz Bay flora was adapted to several months of winter darkness and short-summer growing seasons. The nearest living relatives of identifiable woody taxa suggest year-round high humidity, with an annual precipitation between ~1200 and 1500 mm. Palaeotemperatures are more difficult to quantify although the inferred humid microtherm climate is consistent with mean annual temperatures less than 12°C and freezing winters.

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Barbara, Loïc, Xavier Crosta, Guillaume Massé, and Olivier Ther. "Deglacial environments in eastern Prydz Bay, East Antarctica." Quaternary Science Reviews 29, no. 19-20 (September 2010): 2731–40. http://dx.doi.org/10.1016/j.quascirev.2010.06.027.

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16

Montague, T. L. "Birds of Prydz Bay, Antarctica: Distribution and abundance." Hydrobiologia 165, no. 1 (August 1988): 227–37. http://dx.doi.org/10.1007/bf00025592.

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17

Taylor, Fiona, and Andrew McMinn. "Late Quaternary Diatom Assemblages from Prydz Bay, Eastern Antarctica." Quaternary Research 57, no. 1 (January 2002): 151–61. http://dx.doi.org/10.1006/qres.2001.2279.

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AbstractThe paleo-depositional environment of inner Prydz Bay, East Antarctica, has been reconstructed for the past 21,320 14C yr B.P., using diatom assemblages and sediment facies from a short, 352-cm-long gravity core. Between 21,320 and 11,650 14C yr B.P., compact tillite and diamicton are present in the core, and diatom frustules are rare to absent. These data suggest that an ice sheet grounded over the site during the last glacial maximum. Following glacial retreat, siliceous muddy ooze was deposited, from 11,650 to 2600 14C yr B.P., in an open marine setting. During this stage, diatom frustules are abundant and well preserved, and Thalassiosira antarctica resting spores and Fragilariopsis curta dominate the assemblage. This assemblage suggests open marine deposition in an environment where the spatial and temporal distribution of sea ice is less than today. Since 2600 14C yr B.P., sea-ice and ice-edge diatom species have become more abundant, and neoglacial cooling is inferred. The assemblage is similar to that forming currently in Prydz Bay, where sea ice is absent (<10% cover) for 2–3 months of the year and permanent ice edge and/or multiyear sea ice remains in close proximity to the site.

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Lisker, Frank, Christopher J. L. Wilson, and Helen J. Gibson. "Thermal history of the Vestfold Hills (East Antarctica) between Lambert rifting and Gondwana break-up, evidence from apatite fission track data." Antarctic Science 19, no. 1 (February 28, 2007): 97–106. http://dx.doi.org/10.1017/s0954102007000144.

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Analysis of five basement samples from the Vestfold Hills (East Antarctica) reveals pooled apatite fission track (FT) ages ranging from 188 to 264 Ma and mean lengths of 13.7 to 14.9 μm. Quantitative thermal histories derived from these data give consistent results indicating onset of cooling/denudation began sometime prior to 240 Ma, with final cooling below 105°–125°C occurring between 240 and 220 Ma (Triassic). A Cretaceous denudation phase can be inferred from the sedimentary record of the Prydz Bay offshore the Vestfold Hills. The two denudational episodes are likely associated with Palaeozoic large-scale rifting processes that led to the formation of the adjacent Lambert Graben, and to the Cretaceous Gondwana break-up between Antarctica and India. Subsequent evolution of the East Antarctic passive continental margin likely occurred throughout the Cenozoic based on the depositional record in Prydz Bay and constraints (though tentative) from FT data.

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Woehler, EJ, B. Raymond, and DJ Watts. "Decadal-scale seabird assemblages in Prydz Bay, East Antarctica." Marine Ecology Progress Series 251 (2003): 299–310. http://dx.doi.org/10.3354/meps251299.

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Filippova, J. A., and E. A. Pakhomov. "Young squid in the plankton of Prydz Bay, Antarctica." Antarctic Science 6, no. 2 (June 1994): 171–73. http://dx.doi.org/10.1017/s095410209400026x.

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A collection of juvenile squid were caught with the Isaacs-Kidd midwater trawl (IKMT) and the Juday plankton net at 86 stations in Prydz Bay (60°–67°30′S, 60°–80°E) to a depth of 500 m but mostly at 0–200 m. Five species were identified, Psychroteuthis glacialis, Alluroteuthis antarcticus, Brachioteuthis sp. and the cranchiids Galiteuthis glacialis and Mesonychoteuthis hamiltoni. P. glacialis and the cranchiids were the most abundant species. Young P. glacialis (5–17 mm ML) were taken at depths of 5–200 m but concentrated in the upper 100 m whilst the cranchiids (5–35 mm ML) occurred over a wider vertical range (50–500 m). The regular occurrence of paralarvae and juveniles suggests that all the species reproduce in the Antarctic. Juvenile Vertical distribution appears to differ between species with P. glacialis concentrated relatively near the surface, the cranchiids in the upper part of the Circumpolar Deep Water and A. antarcticus widely distributed to a depth of 900 m.

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Li, Chaolun, Song Sun, Guangtao Zhang, and Peng Ji. "Summer feeding activities of zooplankton in Prydz Bay, Antarctica." Polar Biology 24, no. 12 (December 1, 2001): 892–900. http://dx.doi.org/10.1007/s003000100292.

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Bindoff, Nathaniel L., Andrew Forbes, and Annie P. S. Wong. "Data on bottom water in Prydz Bay, Antarctica, revised." Eos, Transactions American Geophysical Union 84, no. 21 (2003): 200. http://dx.doi.org/10.1029/2003eo210005.

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Feng, Shouzhen, Zuo Xue, and Wanqing Chi. "Topographic features around Zhongshan Station, southeast of Prydz Bay." Chinese Journal of Oceanology and Limnology 26, no. 4 (November 2008): 469–74. http://dx.doi.org/10.1007/s00343-008-0469-6.

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Shi, Jiuxin, Yaoyao Cheng, Yutian Jiao, and Jiaqiang Hou. "Supercooled water in austral summer in Prydz Bay, Antarctica." Chinese Journal of Oceanology and Limnology 29, no. 2 (October 21, 2010): 427–37. http://dx.doi.org/10.1007/s00343-010-0011-5.

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Berg, Sonja, Bernd Wagner, Duanne A. White, Holger Cremer, Ole Bennike, and Martin Melles. "Short Note: New marine core record of Late Pleistocene glaciation history, Rauer Group, East Antarctica." Antarctic Science 21, no. 3 (March 4, 2009): 299–300. http://dx.doi.org/10.1017/s0954102009001886.

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The evolution of the East Antarctic Ice Sheet (EAIS) during the Late Quaternary is poorly known, partly because some regions, such as the Prydz Bay vicinity, indicate significant variability in the glaciation patterns (e.g. Domack et al. 1998, Zwartz et al. 1998, Hodgson et al. 2005).

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O'Brien, P. E., L. De Santis, P. T. Harris, E. Domack, and P. G. Quilty. "Ice shelf grounding zone features of western Prydz Bay, Antarctica: sedimentary processes from seismic and sidescan images." Antarctic Science 11, no. 1 (March 1999): 78–91. http://dx.doi.org/10.1017/s0954102099000115.

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Several grounding zone wedges were left on the floor and flanks of Prydz Channel in western Prydz Bay by the Lambert Glacier during the last glacial cycle. Seismic profiles indicate that vertical accretion at the glacier bed was the most important depositional process in forming the wedges, rather than progradation by sediment gravity flows. Sidescan sonographs reveal extensive development of flutes on the sea floor inshore from the wedges, indicating deformable bed conditions beneath the ice. The region inshore of the east Prydz Channel wedge features extensive dune fields formed by currents flowing towards the grounding zone. This orientation is consistent with models of circulation beneath ice shelves in which melting at the grounding line generates plumes of fresher water that rise along the base of the ice shelf, entraining sea water into a circulation cell. The Lambert Deep is surrounded by a large composite ridge of glacial sediments. Internal reflectors suggest formation mostly by subglacial accretion. The sea floor in the Lambert Deep lacks dune fields and shows evidence of interspersed subglacial cavities and grounded ice beneath the glacier. The absence of bedforms reflects sea floor topography that would have inhibited the formation of energetic melt water-driven circulation.

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Zeng, Chen, and Hui Ping Xu. "Temporal and Spatial SST (Sea Surface Temperature) Distribution and its Impact on Chlorophyll - A Concentration in Southern Ocean during 2002-2012." Applied Mechanics and Materials 675-677 (October 2014): 1197–200. http://dx.doi.org/10.4028/www.scientific.net/amm.675-677.1197.

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Sea Surface Temperature (SST) has great impact on algae growth in ocean. And the variation of SST closely relate with global climate. As 1/5 of the greatest ocean, southern ocean SST temporal and spatial distribution needs wide attention. We uses MODIS SST inversed algorithm to find its regulation in this decade (October 2002 to March 2012, October to December and January to March a year). Significant annual cycles appears that SST rises from October and falls in February, while area >70° has peak in January. SST decreases with latitude ascending from spatial distribution. Through in high latitude, Ross Sea, Prydz Bay and Weddell Sea enjoy quite high temperature comparing to its adjacent area in same period. Almost whole blooms occur in these three seas in December, January and February, among which Prydz Bay has the highest suitable SST with 0.3-1.7°C, Amundsen Sea has the second with-0.2-0.3°C, Ross Sea has the lowest with-0.9- -0.8°C. Amundsen Sea owns the vigorous bloom and the narrowest suitable temperature period.

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Krebs, Kim A., and Mark C. G. Mabin. "Distribution, activity and characteristics of the alpine-type glaciers of northern Prince Charles Mountains, East Antarctica." Antarctic Science 9, no. 3 (September 1997): 307–12. http://dx.doi.org/10.1017/s0954102097000394.

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Alpine-type valley and cirque glaciers occur in many massifs in the northern Prince Charles Mountains. A total of forty-seven glaciers have been investigated using maps and aerial photographs, and in the summer of 1991–92 seventeen of these were examined in the field. The distribution of these glaciers and their present-day snowline line altitudes appear to be influenced by their location with respect to snow-bearing winds, particularly the summer winds that bring moisture from the open waters of Prydz Bay. Moraine morphologies indicate that these glaciers advance and retreat out-of-phase with the larger ice sheet outlet glaciers. During the last glacial maximum the alpine-type glaciers retreated while the ice sheet outlet glaciers showed a minor expansion. This is believed to be due to the alpine-type glaciers being starved of snowfall as the expanded last glacial maximum sea-ice cover around the continent would have removed their maritime moisture sources. Recent contrasts in the behaviour of the alpine glaciers may reflect changes in summer sea ice extent in Prydz Bay.

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Norman, F. I. "Adélie penguin colonies in eastern Prydz Bay: ‘biological indicators’ of exploration history and political change." Polar Record 36, no. 198 (July 2000): 215–32. http://dx.doi.org/10.1017/s003224740001648x.

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AbstractTemporally and spatially increasing information on the distribution of Adélie penguin (Pygoscelis adeliae) breeding sites is used as an index of various national activities in eastern Prydz Bay, East Antarctica. Recorded instances of such sites are used to indicate both exploration and enhanced local knowledge. While Norwegians discovered the area (1935), and revisited it (1937), reports of penguins were minimal. The 1938 Ellsworth expedition added few details and the potential of Operation Highjump (1947) photographs to delimit breeding sites was never realised. Observations by Australian expeditioners from the mid-1950s onwards, supplemented to some extent by those from the Soviet Union, increased information substantially. When Davis station was established (January 1957), at least five breeding sites were known around eastern Prydz Bay. By 1973 this had increased to 23 or 24 sites, mostly north of the Sørsdal Glacier, which had apparently acted as a barrier to land-based exploration. Data available to 1980 showed 20 sites in the Vestfold Hills, added two in the Rauer Group, and omitted some recorded earlier. Ground surveys of the Vestfold Hills (November 1973) increased known sites slightly, discounted erroneous records, and massively increased numbers of individual colonies. In 1981 an air survey recognised 24 sites in the Vestfold Hills and increased those known to 47. In approximately the same period, official Soviet records showed perhaps four sites in the Vestfold Hills and another in the Rauer Group. Early reports provided poor estimates of breeding population sizes — totals of some 130,000 (or 174,200) pairs in the Vestfold Hills in 1973 are compared with perhaps 196,600 in 1981, with another 129,000 pairs to the south. By 1983 locations of breeding sites in the Vestfold Hills were well established, and this was achieved in southern Prydz Bay following publication of 1981 survey results.Progression of information regarding breeding sites in eastern Prydz Bay was slow. Initial Australian activities were slight following acceptance of its Antarctic Territory (1933). However, a Soviet Antarctic whaling fleet, uncertainty regarding American and Soviet intentions, and the imminent International Geophysical Year increased Australian interest. A station was established, local search areas expanded, and enhanced details regarding penguin breeding sites and colonies followed. Data reviews and surveys followed increasing international interest in southern ecosystems. Improved knowledge regarding the species' local populations reflected changing political agendas. Indeed, ‘knowledge’ itself gave early support to territorial claims. Participation in international surveys became an acceptable scientific endeavour, anticipated under Treaty agreements and promoted by associated organisations. In such fora, surveys and monitoring are expected, although not necessarily furthering the strength of existing claims.

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30

Butler, MS, RJ Capon, and CC Lu. "Psammopemmins (A-C), Novel Brominated 4-Hydroxyindole Alkaloids From an Antarctic Sponge, Psammopemma sp." Australian Journal of Chemistry 45, no. 11 (1992): 1871. http://dx.doi.org/10.1071/ch9921871.

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Two specimens of a marine sponge Psammopemma sp. collected from Prydz Bay, Antarctica, have been found to contain three new brominated 4-hydroxyindole alkaloids: psammopemmin A (4), -B (5) and -C (6). These novel secondary metabolites, which also incorporate a unique 2-bromopyrimidine moiety, have been assigned structures on the basis of detailed spectroscopic analysis and derivatization.

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31

Hui, Fengming, Tiancheng Zhao, Xinqing Li, Mohammed Shokr, Petra Heil, Jiechen Zhao, Lin Zhang, and Xiao Cheng. "Satellite-Based Sea Ice Navigation for Prydz Bay, East Antarctica." Remote Sensing 9, no. 6 (May 24, 2017): 518. http://dx.doi.org/10.3390/rs9060518.

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32

Zhang, Fan, Zhongyong Gao, and Heng Sun. "ADVANCES IN CARBON-CYCLE RESEARCH FOR PRYDZ BAY, THE ANTARCTICA." CHINESE JOURNAL OF POLAR RESEARCH 25, no. 3 (January 8, 2014): 284–93. http://dx.doi.org/10.3724/sp.j.1084.2013.00284.

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33

Taylor, Fiona, Andrew McMinn, and Dennis Franklin. "Distribution of diatoms in surface sediments of Prydz Bay, Antarctica." Marine Micropaleontology 32, no. 3-4 (December 1997): 209–29. http://dx.doi.org/10.1016/s0377-8398(97)00021-2.

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34

Kuvaas, Berit, and German Leitchenkov. "Glaciomarine turbidite and current controlled deposits in Prydz Bay, Antarctica." Marine Geology 108, no. 3-4 (November 1992): 365–81. http://dx.doi.org/10.1016/0025-3227(92)90205-v.

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35

Nunes Vaz, Richard A., and Geoffrey W. Lennon. "Physical oceanography of the Prydz Bay region of Antarctic waters." Deep Sea Research Part I: Oceanographic Research Papers 43, no. 5 (May 1996): 603–41. http://dx.doi.org/10.1016/0967-0637(96)00028-3.

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36

Borchers, Andreas, Ines Voigt, Gerhard Kuhn, and Bernhard Diekmann. "Mineralogy of glaciomarine sediments from the Prydz Bay–Kerguelen region: relation to modern depositional environments." Antarctic Science 23, no. 2 (November 16, 2010): 164–79. http://dx.doi.org/10.1017/s0954102010000830.

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AbstractSurface mineralogical compositions and their association to modern processes are well known from the east Atlantic and south-west Indian sectors of the Southern Ocean, but data from the interface of these areas - the Prydz Bay–Kerguelen region - is still missing. The objective of our study was to provide mineralogical data of reference samples from this region and to relate these mineralogical assemblages to hinterland geology, weathering, transport and depositional processes. Clay mineral assemblages were analysed by means of X-ray diffraction technique. Heavy mineral assemblages were determined by counting of gravity-separated grains under a polarizing microscope. Results show that by use of clay mineral assemblages four mineralogical provinces can be subdivided: i) continental shelf, ii) continental slope, iii) deep sea, iv) Kerguelen Plateau. Heavy mineral assemblages in the fine sand fraction are relatively uniform except for samples taken from the East Antarctic shelf. Our findings show that mineralogical studies on sediment cores from the study area have the potential to provide insights into past shifts in ice-supported transport and activity and provenance of different water masses (e.g. Antarctic slope current and deep western boundary current) in the Prydz Bay–Kerguelen region.

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37

Miquel, Juan Carlos. "Distribution and abundance of post-larval krill (Euphausia superba Dana) near Prydz Bay in summer with reference to environmental conditions." Antarctic Science 3, no. 3 (September 1991): 279–92. http://dx.doi.org/10.1017/s0954102091000342.

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Data on the distribution, abundance and population structure of krill in the Prydz Bay area during January–February 1985 are considered in relation to hydrography and phytoplankton standing stocks. Stratified mean density and biomass estimated for the whole surveyed area from RMT-8 hauls were among the lowest recorded (3.3 individuals 1000 m−3 and 3.1 g 1000 m−3) confirming Prydz Bay as a low krill abundance area in the Southern Ocean. Age cohorts 1+ to 4+ were present, the size of the animals increased from south to north and juveniles were mostly found in surface waters near the pack-ice. Adults were in an active reproductive phase: 98% of the females were mated and 35% were ready to spawn whereas 86% of the males carried spermatophores. Breeding was taking place in oceanic waters over deep zones with the spawning season limited to January-April. Phytoplankton biomass was also very low in the area (mean of 29 mg Chl a m−2 in the upper 200 m) and currents speed low, never reaching 10 cm s−1. Krill distribution was strongly related to water circulation pattern but not related to phytoplankton distribution.

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38

Melnikov, I. A. "MONITORING OF THE WATER-ICE ECOSYSTEM IN THE ANTARCTIC COASTAL AREA ON MATERIALS OF THE RAE-64." XXII workshop of the Council of nonlinear dynamics of the Russian Academy of Sciences 47, no. 1 (April 30, 2019): 223–24. http://dx.doi.org/10.29006/1564-2291.jor-2019.47(1).48.

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During the seasonal work of the Russian Antarctic expedition (RAE-64) in the Nella fjord at the continental station “Progress” (Prydz Bay, Eastern Antarctica), the monitoring of the water-ice ecological system has been carried out here annually since the International polar year (2007). The purpose of monitoring is to show the role of sea ice biota in the global biosphere processes of the Southern ocean.

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39

Scrimgeour, Ian, and Martin Hand. "A metamorphic perspective on the Pan African overprint in the Amery area of Mac. Robertson Land, East Antarctica." Antarctic Science 9, no. 3 (September 1997): 313–35. http://dx.doi.org/10.1017/s0954102097000400.

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The Amery area of Mac. Robertson Land lies between the early Palaeozoic granulite terrain of Prydz Bay and Meso-Neoproterozoic granulites in northern Prince Charles Mountains (nPCM). In contrast to the nPCM which shows an apparently simple near-isobaric history, granulites exposed in the Amery area contain reaction textures suggesting a more complex evolution. Peak-M1 Mesoproterozoic assemblages formed at c. 700 MPa and 800°C and initially underwent a near-isobaric cooling. A subsequent increase in temperature (M2) resulted in the formation of cordierite-spinel assemblages at ~450 MPa and 700°C in metapelite. The timing of M2 is not firmly established, however existing data strongly suggest it is an early Palaeozoic event coeval with tectonism in Prydz Bay to the north-east. Thus the metamorphic evolution of granulites in the Amery area reflects a terrain-scale thermal interference pattern between two unrelated orogenic events. In rocks not recording post-M1 isobaric cooling, the superposition of M2 on M1 assemblages resulted in the formation of M2 cordierite-spinel symplectites at the expense of peak M1 garnet and sillimanite. This texture, commonly interpreted to reflect near-isothermal decompression, has no relevance in terms of a single tectonothermal event in the Amery area.

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40

Mahood, Albert D., and John A. Barron. "Late Pliocene Diatoms in a Diatomite from Prydz Bay, East Antarctica." Micropaleontology 42, no. 3 (1996): 285. http://dx.doi.org/10.2307/1485876.

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41

CAI, Pinghe. "Glacial meltwater and sea ice meltwater in the Prydz Bay, Antarctica." Science in China Series D 46, no. 1 (2003): 50. http://dx.doi.org/10.1360/03yd9005.

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42

Sun, Wei-Ping, Chuan-Yu Hu, Zheng-Bing Han, Chen Shen, Wei-Yan Zhang, Ji-Hao Zhu, Pei-Song Yu, Hai-Feng Zhang, and Jian-Ming Pan. "Variations of diatom opal Ge/Si in Prydz Bay, East Antarctica." Marine Chemistry 227 (December 2020): 103879. http://dx.doi.org/10.1016/j.marchem.2020.103879.

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43

Sun, Wei-Ping, Chuan-Yu Hu, Zheng-Bing Han, Chen Shen, and Jian-Ming Pan. "Zn/Si records in diatom opal from Prydz Bay, East Antarctica." Marine Geology 381 (November 2016): 34–41. http://dx.doi.org/10.1016/j.margeo.2016.08.009.

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44

Ma, Hao, Zhi Zeng, Jianhua He, Zhengbing Han, Wuhui Lin, Liqi Chen, Jianping Cheng, and Shi Zeng. "234Th-derived particulate organic carbon export in the Prydz Bay, Antarctica." Journal of Radioanalytical and Nuclear Chemistry 299, no. 1 (November 19, 2013): 621–30. http://dx.doi.org/10.1007/s10967-013-2842-y.

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45

Han, Zhengbing, Chuanyu Hu, Weiping Sun, Jun Zhao, Jianming Pan, Gaojing Fan, and Haisheng Zhang. "Characteristics of particle fluxes in the Prydz Bay polynya, Eastern Antarctica." Science China Earth Sciences 62, no. 4 (February 15, 2019): 657–70. http://dx.doi.org/10.1007/s11430-018-9285-6.

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46

Middleton, Jason H., and Stella E. Humphries. "Thermohaline structure and mixing in the region of Prydz Bay, Antarctica." Deep Sea Research Part A. Oceanographic Research Papers 36, no. 8 (August 1989): 1255–66. http://dx.doi.org/10.1016/0198-0149(89)90104-0.

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47

Hodgson, Dominic A., Pippa L. Whitehouse, Gijs De Cort, Sonja Berg, Elie Verleyen, Ines Tavernier, Stephen J. Roberts, Wim Vyverman, Koen Sabbe, and Philip O'Brien. "Rapid early Holocene sea-level rise in Prydz Bay, East Antarctica." Global and Planetary Change 139 (April 2016): 128–40. http://dx.doi.org/10.1016/j.gloplacha.2015.12.020.

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48

Harris, P. T., F. Taylor, Z. Pushina, G. Leitchenkov, P. E. O'Brien, and V. Smirnov. "Lithofacies distribution in relation to the geomorphic provinces of Prydz Bay, East Antarctica." Antarctic Science 10, no. 3 (September 1998): 227–35. http://dx.doi.org/10.1017/s0954102098000327.

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Over the past 15 years, Japanese, Australian and Russian expeditions to Prydz Bay have collected about 30 000 km of bathymetric data, 6000 km of sidescan sonar data and more than 250 sediment grab and core samples. These data were used in the present study to compile surficial sediment, bathymetric, and geomorphological maps of the Prydz Bay region. Lithofacies distribution was determined by surficial sediment data analysis using sample matrix (Q-mode) and cluster analysis techniques based on data from 206 sites. Data included percentage biogenic silica (opal), calcium carbonate, gravel, mud, and relative abundance of two diatom species (Fragilariopsis curta and F. kerguelensis). Five lithofacies are identified from the available data: (1) slightly gravelly sandy mud (g)sM lithofacies, (2) siliceous mud and diatom ooze (SMO) lithofacies, (3) F. kerguelensis pelagic ooze lithofacies, (4) F. curta gravelly muddy sand gmS lithofacies and (5) calcareous gravel lithofacies. In many areas the lithofacies correlate to geomorphological provinces as defined by previous investigators using 3.5 kHz and sidescan sonar data. In some cases, Holocene SMO sediments are seen to drape over iceberg plough marks, implying that these are relict features. These five lithofacies are likely to dominate most of the East Antarctic shelf region and may be helpful in defining sedimentary successions resulting from ice-sheet advance and retreat over glacial-interglacial cycles.

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49

Wilson, Christopher J. L., Cameron Quinn, Laixi Tong, and David Phillips. "Early Palaeozoic intracratonic shears and post-tectonic cooling in the Rauer Group, Prydz Bay, East Antarctica constrained by40Ar/39Ar thermochronology." Antarctic Science 19, no. 3 (June 29, 2007): 339–53. http://dx.doi.org/10.1017/s0954102007000478.

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AbstractThe Rauer Group, in Prydz Bay, contains reworked Archaean-Proterozoic crust in high-strain zones that formed during a pervasive high-temperature ductile deformation event related to intracratonic mechanisms. The effects of this event extend southwards from Prydz Bay into the southern Prince Charles Mountains. The associated structural evolution involved development of ductile and brittle structures that formed during an approximately north–south directed transpressional deformation event that is confined to high-grade (>800°C) shear zones in the Rauer Group. Minerals from the Rauer Group, yield40Ar/39Ar cooling ages ranging from 560 to 460 Ma. Thermal histories derived from hornblende, biotite and feldspar suggest that the onset of rapid cooling began sometime prior to 510 Ma with cooling rates ofc. 42 to 33°C myr-1fromc. 510 Ma toc. 500 Ma. Whereas,40Ar/39Ar data obtained from plagioclase and K–feldspar suggest a slower cooling fromc. 500 Ma toc. 460 Ma with cooling rates from 5 to 2°C myr-1. These results demonstrate that the early Palaeozoic cooling history and comparable palaeostress regimes are regionally extensive, which has important implications for the tectonothermal and stress-field variability across Gondwana. The elevated thermal conditions would induce lithospheric weakening and promote the early Palaeozoic intraplate orogeny observed in eastern Antarctica with the development of a large intracratonic shear system.

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50

Noh, Il. "Carotenoid Pigments from Suspended and Sinking Particulate Matter in Prydz Bay, Antarctica." Journal of Environmental Science International 20, no. 11 (November 30, 2011): 1357–71. http://dx.doi.org/10.5322/jes.2011.20.11.1357.

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Journal articles on the topic 'Prydz Bay'

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