Timing of the Northern Prince Gustav Ice Stream retreat and the deglaciation of northern James Ross Island, Antarctic Peninsula during the last glacial-interglacial transition

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F14%3A10281946" target="_blank" >RIV/00216208:11310/14:10281946 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/14:00074231 RIV/00025798:_____/14:00000377

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.yqres.2014.05.003" target="_blank" >http://dx.doi.org/10.1016/j.yqres.2014.05.003</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.yqres.2014.05.003" target="_blank" >10.1016/j.yqres.2014.05.003</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Timing of the Northern Prince Gustav Ice Stream retreat and the deglaciation of northern James Ross Island, Antarctic Peninsula during the last glacial-interglacial transition

Popis výsledku v původním jazyce

The Northern Prince Gustav Ice Stream located in Prince Gustav Channel, drained the northeastern portion of the Antarctic Peninsula Ice Sheet during the last glacial maximum. Here we present a chronology of its retreat based on in situ produced cosmogenic Be-10 from erratic boulders at Cape Lachman, northern James Ross Island. Schmidt hammer testing was adopted to assess the weathering state of erratic boulders in order to better interpret excess cosmogenic Be-10 from cumulative periods of pre-exposureor earlier release from the glacier. The weighted mean exposure age of five boulders based on Schmidt hammer data is 12.9 +/- 1.2 ka representing the beginning of the deglaciation of lower-lying areas (<60 m a.s.l.) of the northern James Ross Island, when Northern Prince Gustav Ice Stream split from the remaining James Ross Island ice cover. This age represents the minimum age of the transition from grounded ice stream to floating ice shelf in the middle continental shelf areas of the no

Název v anglickém jazyce

Timing of the Northern Prince Gustav Ice Stream retreat and the deglaciation of northern James Ross Island, Antarctic Peninsula during the last glacial-interglacial transition

Popis výsledku anglicky

The Northern Prince Gustav Ice Stream located in Prince Gustav Channel, drained the northeastern portion of the Antarctic Peninsula Ice Sheet during the last glacial maximum. Here we present a chronology of its retreat based on in situ produced cosmogenic Be-10 from erratic boulders at Cape Lachman, northern James Ross Island. Schmidt hammer testing was adopted to assess the weathering state of erratic boulders in order to better interpret excess cosmogenic Be-10 from cumulative periods of pre-exposureor earlier release from the glacier. The weighted mean exposure age of five boulders based on Schmidt hammer data is 12.9 +/- 1.2 ka representing the beginning of the deglaciation of lower-lying areas (<60 m a.s.l.) of the northern James Ross Island, when Northern Prince Gustav Ice Stream split from the remaining James Ross Island ice cover. This age represents the minimum age of the transition from grounded ice stream to floating ice shelf in the middle continental shelf areas of the no

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DE - Zemský magnetismus, geodesie, geografie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Quaternary Research

ISSN

0033-5894

e-ISSN

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Svazek periodika

82

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

441-449

Kód UT WoS článku

000343076700014

EID výsledku v databázi Scopus

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