Postglacial relative sea level change at Fildes Peninsula, King George Island (West Antarctic)
Analysis and integration of data obtained in our field and laboratory investigations of 2008–2012 together with results of previous paleogeographic studies were conducted to reveal parameters and factors of the post-glacial changes in the relative sea-level on the Fildes Peninsula and the King Georg...
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ftdoajarticles:oai:doaj.org/article:25ee7ea793104e80930ae0095fe28eb8 2023-05-15T13:57:42+02:00 Postglacial relative sea level change at Fildes Peninsula, King George Island (West Antarctic) K. V. Polishchuk S. R. Verkulich I. S. Ezhikov Z. V. Pushina 2016-02-01T00:00:00Z https://doi.org/10.15356/2076-6734-2016-1-93-102 https://doaj.org/article/25ee7ea793104e80930ae0095fe28eb8 RU rus Nauka https://ice-snow.igras.ru/jour/article/view/272 https://doaj.org/toc/2076-6734 https://doaj.org/toc/2412-3765 2076-6734 2412-3765 doi:10.15356/2076-6734-2016-1-93-102 https://doaj.org/article/25ee7ea793104e80930ae0095fe28eb8 Лëд и снег, Vol 56, Iss 1, Pp 93-102 (2016) антарктика гляциоизостазия голоцен донные осадки озёр донные формы рельефа изменения уровня моря морские отложения радиоуглеродное датирование Science Q article 2016 ftdoajarticles https://doi.org/10.15356/2076-6734-2016-1-93-102 2023-03-19T01:40:13Z Analysis and integration of data obtained in our field and laboratory investigations of 2008–2012 together with results of previous paleogeographic studies were conducted to reveal parameters and factors of the post-glacial changes in the relative sea-level on the Fildes Peninsula and the King George Island. Results of dating of organic material taken from cross-sections of Quaternary deposits, data on morphology of marine landforms as well as on bottom sediments in lakes were used to construct a curve of changes in the relative sea-level.Our research has shown that the rapid rise of relative sea level in the area (since the beginning of the Holocene) decelerated about 8000 years BP, achieving its maximum about 7000 years BP. This was followed by the fall of relative sea-level (the land elevation) by 18–20 m in total, and it was characterized by relatively high rate of fall during periods of 6000– 5000 years BP, 4000–2500 years BP, and during the last 1500 years; the rate decreased in 5000–4000 years BP and 2500– 1600 years BP. The changes in relative sea level in this region were determined by the following factors: the eustatic component of the global changes in sea-level and, possibly, oscillations in the global sea level of another nature; local parameters of the Last glacial maximum; a course of the Peninsula deglaciation; regional physical characteristics of the Earth's crust and the mantle substances; local tectonic processes, including the isostatic rebound. Since the beginning of the Holocene up to about 7000 years BP, the main contribution to changes of the relative sea-level in this area was made by the global eustatic factor. The subsequent fall of the relative sea-level (elevation of the Peninsula surface) proceeded under condition of reduced role of the eustatic factor and predominance of other factors. Article in Journal/Newspaper Antarc* Antarctic King George Island Антарктика Directory of Open Access Journals: DOAJ Articles Antarctic King George Island Fildes ENVELOPE(-58.817,-58.817,-62.217,-62.217) Fildes peninsula ENVELOPE(-58.948,-58.948,-62.182,-62.182) Ice and Snow 56 1 93 102 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
Russian |
topic |
антарктика гляциоизостазия голоцен донные осадки озёр донные формы рельефа изменения уровня моря морские отложения радиоуглеродное датирование Science Q |
spellingShingle |
антарктика гляциоизостазия голоцен донные осадки озёр донные формы рельефа изменения уровня моря морские отложения радиоуглеродное датирование Science Q K. V. Polishchuk S. R. Verkulich I. S. Ezhikov Z. V. Pushina Postglacial relative sea level change at Fildes Peninsula, King George Island (West Antarctic) |
topic_facet |
антарктика гляциоизостазия голоцен донные осадки озёр донные формы рельефа изменения уровня моря морские отложения радиоуглеродное датирование Science Q |
description |
Analysis and integration of data obtained in our field and laboratory investigations of 2008–2012 together with results of previous paleogeographic studies were conducted to reveal parameters and factors of the post-glacial changes in the relative sea-level on the Fildes Peninsula and the King George Island. Results of dating of organic material taken from cross-sections of Quaternary deposits, data on morphology of marine landforms as well as on bottom sediments in lakes were used to construct a curve of changes in the relative sea-level.Our research has shown that the rapid rise of relative sea level in the area (since the beginning of the Holocene) decelerated about 8000 years BP, achieving its maximum about 7000 years BP. This was followed by the fall of relative sea-level (the land elevation) by 18–20 m in total, and it was characterized by relatively high rate of fall during periods of 6000– 5000 years BP, 4000–2500 years BP, and during the last 1500 years; the rate decreased in 5000–4000 years BP and 2500– 1600 years BP. The changes in relative sea level in this region were determined by the following factors: the eustatic component of the global changes in sea-level and, possibly, oscillations in the global sea level of another nature; local parameters of the Last glacial maximum; a course of the Peninsula deglaciation; regional physical characteristics of the Earth's crust and the mantle substances; local tectonic processes, including the isostatic rebound. Since the beginning of the Holocene up to about 7000 years BP, the main contribution to changes of the relative sea-level in this area was made by the global eustatic factor. The subsequent fall of the relative sea-level (elevation of the Peninsula surface) proceeded under condition of reduced role of the eustatic factor and predominance of other factors. |
format |
Article in Journal/Newspaper |
author |
K. V. Polishchuk S. R. Verkulich I. S. Ezhikov Z. V. Pushina |
author_facet |
K. V. Polishchuk S. R. Verkulich I. S. Ezhikov Z. V. Pushina |
author_sort |
K. V. Polishchuk |
title |
Postglacial relative sea level change at Fildes Peninsula, King George Island (West Antarctic) |
title_short |
Postglacial relative sea level change at Fildes Peninsula, King George Island (West Antarctic) |
title_full |
Postglacial relative sea level change at Fildes Peninsula, King George Island (West Antarctic) |
title_fullStr |
Postglacial relative sea level change at Fildes Peninsula, King George Island (West Antarctic) |
title_full_unstemmed |
Postglacial relative sea level change at Fildes Peninsula, King George Island (West Antarctic) |
title_sort |
postglacial relative sea level change at fildes peninsula, king george island (west antarctic) |
publisher |
Nauka |
publishDate |
2016 |
url |
https://doi.org/10.15356/2076-6734-2016-1-93-102 https://doaj.org/article/25ee7ea793104e80930ae0095fe28eb8 |
long_lat |
ENVELOPE(-58.817,-58.817,-62.217,-62.217) ENVELOPE(-58.948,-58.948,-62.182,-62.182) |
geographic |
Antarctic King George Island Fildes Fildes peninsula |
geographic_facet |
Antarctic King George Island Fildes Fildes peninsula |
genre |
Antarc* Antarctic King George Island Антарктика |
genre_facet |
Antarc* Antarctic King George Island Антарктика |
op_source |
Лëд и снег, Vol 56, Iss 1, Pp 93-102 (2016) |
op_relation |
https://ice-snow.igras.ru/jour/article/view/272 https://doaj.org/toc/2076-6734 https://doaj.org/toc/2412-3765 2076-6734 2412-3765 doi:10.15356/2076-6734-2016-1-93-102 https://doaj.org/article/25ee7ea793104e80930ae0095fe28eb8 |
op_doi |
https://doi.org/10.15356/2076-6734-2016-1-93-102 |
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Ice and Snow |
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56 |
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93 |
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