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Добірка наукової літератури з теми "Geology – Antarctica – Maxwell Bay"

Автор: Grafiati
Опубліковано: 10 грудня 2022
Оновлено: 28 січня 2023

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Статті в журналах з теми "Geology – Antarctica – Maxwell Bay"

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Monien, Patrick, Bernhard Schnetger, Hans-Jürgen Brumsack, H. Christian Hass, and Gerhard Kuhn. "A geochemical record of late Holocene palaeoenvironmental changes at King George Island (maritime Antarctica)." Antarctic Science 23, no. 3 (February 1, 2011): 255–67. http://dx.doi.org/10.1017/s095410201100006x.

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AbstractDuring RV Polarstern cruise ANT-XXIII/4 in 2006, a gravity core (PS 69/335-2) and a giant box core (PS 69/335-1) were retrieved from Maxwell Bay off King George Island (KGI). Comprehensive geochemical (bulk parameters, quantitative XRF, Inductively Coupled Plasma Mass Spectrometry) and radiometric dating analyses (14C, 210Pb) were performed on both cores. A comparison with geochemical data from local bedrock demonstrates a mostly detrital origin for the sediments, but also points to an overprint from changing bioproductivity in the overlying water column in addition to early diagenetic processes. Furthermore, ten tephra layers that were most probably derived from volcanic activity on Deception Island were identified. Variations in the vertical distribution of selected elements in Maxwell Bay sediments further indicate a shift in source rock provenance as a result of changing glacier extents during the past c. 1750 years that may be linked to the Little Ice Age and the Medieval Warm Period. Whereas no evidence for a significant increase in chemical weathering rates was found, 210Pb data revealed that mass accumulation rates in Maxwell Bay have almost tripled since the 1940s (0.66 g cm-2 yr-1 in ad 2006), which is probably linked to rapid glacier retreat in this region due to recent warming.
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Câmara, Paulo E. A. S., Barbara Guedes Costa Silva, Micheline Carvalho-Silva, and Diego Knop Henriques. "The moss flora of Ostrov Geologov (Geologists Island), Maxwell Bay, King George Island, Antarctica." Boletín de la Sociedad Argentina de Botánica 52, no. 2 (July 7, 2017): 251–55. http://dx.doi.org/10.31055/1851.2372.v52.n2.17439.

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Located of the east coast of Fildes Peninsula, South of Ardley Island, at King George Island, Ostrov Geologov (Geologist Islands) is a small island with 0.25 miles long. It only had one plant record published so far. We have conducted extensive fieldwork on the site and provide here a comprehensive checklist and a key for the moss species occurring on the island. Despite its small size, theislandcontains about 35% of all theFildes Peninsula moss flora, six new records were found. The pristine state of the island due to its relative isolation, presence of avian nesting sites and a relatively rich moss flora are strong arguments in favor of protection status for the island.
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Hass, H. C., G. Kuhn, P. Monien, H. J. Brumsack, and M. Forwick. "Climate fluctuations during the past two millennia as recorded in sediments from Maxwell Bay, South Shetland Islands, West Antarctica." Geological Society, London, Special Publications 344, no. 1 (2010): 243–60. http://dx.doi.org/10.1144/sp344.17.

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Yoon, H. I., B. K. Park, E. W. Domack, and Y. Kim. "Distribution and dispersal pattern of suspended particulate matter in Maxwell Bay and its tributary, Marian Cove, in the South Shetland Islands, West Antarctica." Marine Geology 152, no. 4 (December 1998): 261–75. http://dx.doi.org/10.1016/s0025-3227(98)00098-x.

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Majewski, Wojciech, Julia S. Wellner, Witold Szczuciński, and John B. Anderson. "Holocene oceanographic and glacial changes recorded in Maxwell Bay, West Antarctica." Marine Geology 326-328 (October 2012): 67–79. http://dx.doi.org/10.1016/j.margeo.2012.08.009.

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6

Khim, Boo-Keun, and Ho Il Yoon. "Postglacial marine environmental changes in Maxwell Bay, King George Island, West Antarctica." Polar Research 22, no. 2 (January 12, 2003): 341–53. http://dx.doi.org/10.3402/polar.v22i2.6464.

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Milliken, K. T., J. B. Anderson, J. S. Wellner, S. M. Bohaty, and P. L. Manley. "High-resolution Holocene climate record from Maxwell Bay, South Shetland Islands, Antarctica." Geological Society of America Bulletin 121, no. 11-12 (August 28, 2009): 1711–25. http://dx.doi.org/10.1130/b26478.1.

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Khim, Boo-Keun, and Ho Il Yoon. "Postglacial marine environmental changes in Maxwell Bay, King George Island, West Antarctica." Polar Research 22, no. 2 (December 2003): 341–53. http://dx.doi.org/10.1111/j.1751-8369.2003.tb00116.x.

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Nitsche, F. O., R. D. Larter, K. Gohl, A. G. C. Graham, and G. Kuhn. "Bedrock channels in Pine Island Bay, West Antarctica." Geological Society, London, Memoirs 46, no. 1 (2016): 217–18. http://dx.doi.org/10.1144/m46.1.

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Potocka, Marta, and Ewa Krzemińska. "Trichocera maculipennis (Diptera)—an invasive species in Maritime Antarctica." PeerJ 6 (August 14, 2018): e5408. http://dx.doi.org/10.7717/peerj.5408.

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Antarctica, with its severe conditions, is poor in terrestrial fauna species. However, an increase in human presence together with climate change may cause an influx of non-native species. Here we report a significant increase in colonized area of one of the few known invasive species to date in Antarctica. Non-native flies of Trichocera maculipennis have been recently observed in the Admiralty Bay area on King George Island, South Shetlands Islands, West Antarctica, 10 years after its first record in Maritime Antarctica (Maxwell Bay, King George Island). Its rapid spread across the island, despite geographic barriers such as glaciers, indicates successful adaptation to local environmental conditions and suggests this species is invasive. The mode of life of T. maculipennis, observed in natural and anthropogenous habitat and in laboratory conditions, is reported. The following adaptations enabled its invasion and existence within the sewage system in Antarctic scientific stations: the ability to survive in complete darkness, male ability to mate on the substrate surface without prior swarming in flight, and adaptation of terrestrial larvae to survive in semi-liquid food. Possible routes of introduction to Antarctica and between two bays on King George Island are discussed, as well as further research leading to the containment and eradication of this species.
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Дисертації з теми "Geology – Antarctica – Maxwell Bay"

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Bleakley, Nerida Lynn. "Late holocene palaeoecology of Taynaya Bay : the relationships between diatom assemblages and sediment composition in Antarctic coastal environments, and their response to regional climate change. Volume 1." Monash University, School of Geography and Environmental Science, 2003. http://arrow.monash.edu.au/hdl/1959.1/5784.

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Milliken, Kristy Lynn Tramp. "Holocene sea-level history and the evolution of Sabine Lake and Calcasieu Lake; east Texas and west Louisiana, USA and the glacial retreat history of Maxwell Bay, South Shetland Islands, Antarctica: Implications for ice cap thickness, retreat, and climate change." Thesis, 2008. http://hdl.handle.net/1911/22264.

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The history of relative sea-level rise along the northern Gulf of Mexico must be constrained in order to determine the relative effects of eustatic sea-level rise, subsidence, antecedent topography, and sediment supply variations on fluvial--bay-shoreline sedimentary systems. This study adds important additional sea-level indicators for the past 10 kyrs in addition to compiling the extensive pre-existing data from the literature. The northern Gulf of Mexico data from the modern shoreline is compared western and eastern Gulf of Mexico datasets to determine the relative difference in subsidence rates over the past 4 kyrs. Subsidence differences are negligible. Furthermore, quantification of the antecedent topography provides a means to account for its effects on sedimentary architecture and the evolution of the Sabine and Calcasieu river-bay systems. The record of eustasy potentially indicates 3 to 4 meter-scale rapid rise intervals during the early Holocene. Subsequent to 7.5 ka, the progradation and retrogradation of the sedimentary systems must be attributed to sediment supply variations (climate change). From 7.5 ka to ∼3 ka, the east Texas, west Louisiana climate oscillated between sub-humid to sub-arid to produce greater than modern sediment flux manifested as deltaic deposits in the modern estuaries. Important future applications of this study include comparison to the nature and timing of fluvial-deltaic retreat in other estuaries along the Gulf of Mexico and Atlantic coasts. The South Shetland Islands, off the western side of the Antarctic Peninsula, are separated by glacial troughs carved during glacial maxima. These glacial troughs are currently fjords which contain a glaciomarine sedimentary record. Age constraining the sediments provides a retreat history of the ice cap for the past 15 kyrs including rates and magnitude of retreat for sub-polar glacial systems. Furthermore, the timing of the migration of sub-glacial polar (cold-based) glacial conditions southward is constrained to ∼10kyr. This has important implications for Holocene glacial flow rates and ice shelf stability in the Antarctic Peninsula region.
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Lowe, Ashley Lane. "Late Quaternary glacial history and ice-sheet behavior of the West Antarctic Ice Sheet in Pine Island Bay, Antarctica." Thesis, 2001. http://hdl.handle.net/1911/17445.

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Marine-geological and -geophysical studies were undertaken to determine Late Quaternary glacial history of the West Antarctic Ice Sheet in Pine Island Bay, Antarctica. Analysis of geomorphic features and sediments on the continental shelf reveal the mechanism and timing of ice-sheet advance and retreat during the last glacial cycle. The ice sheet was grounded on the outer shelf during maximum extent. Thick ice, flowing slowly and resting on crystalline bedrock, was influenced by significant amounts of subglacial meltwater on the inner shelf. Thinner, but more rapidly flowing ice characterized the seaward extent of the ice sheet, which was grounded on a sedimentary substrate. Deglaciation is described by two phases. The outer-most extension of ice retreated gradually, stopping on a bathymetric high on the middle shelf by ∼16,000 years ago. Between ∼16,000 and 12,000 years ago, ice began to retreat rapidly and reached its present-day position by ∼10,000 years ago.
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Частини книг з теми "Geology – Antarctica – Maxwell Bay"

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Findlay, R. H. "Structural geology of the Robertson Bay and Millen terranes, northern Victoria Land, Antarctica." In Geological Investigations in Northern Victoria Land, 91–114. Washington, D. C.: American Geophysical Union, 1986. http://dx.doi.org/10.1029/ar046p0091.

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Тези доповідей конференцій з теми "Geology – Antarctica – Maxwell Bay"

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Gupta, Rashmi, Mayuri Pandey, N. V. Chalapathi Rao, Naresh C. Pant, and Devsamridhi Arora. "Implication of Mineralogical Attributes to Define the Provenance Geology of Sediments Deposited in Prydz Bay, East Antarctica." In Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.913.

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Звіти організацій з теми "Geology – Antarctica – Maxwell Bay"

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Dyke, A. S. Surficial geology, Murray Maxwell Bay (west), Baffin Island, Nunavut. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2003. http://dx.doi.org/10.4095/214472.

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Dyke, A. S. Surficial geology, Murray Maxwell Bay (east), Baffin Island, Nunavut. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2003. http://dx.doi.org/10.4095/214473.

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3

Thorsteinsson, R. Geology, Maxwell Bay and Resolute, District of Franklin, Northwest Territories. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1986. http://dx.doi.org/10.4095/122793.

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