Evidence for an ice shelf covering the central Arctic Ocean during the penultimate glaciation

Evidence for an ice shelf covering the central Arctic Ocean during the penultimate glaciation

Detalhes bibliográficos
Parent link:Nature Communications.— , 2010-
Vol. 7.— 2016.— [10 р.]
Autor Corporativo: Национальный исследовательский Томский политехнический университет Институт природных ресурсов Кафедра геологии и разведки полезных ископаемых Международная научно-образовательная лаборатория изучения углерода арктических морей
Outros Autores: Jakobsson M. Martin, Nilsson J. Johan, Anderson L. Leif, Backman J. Jan, Bjork G. Goran, Cronin Th. M. Thomas, Kirchner N. Nina, Koshurnikov A. V. Andrey Viktorovich, Mayer L., Noormets R. Riko, O'Regan M. Matthew, Stranne Ch. Christian, Ananjev R. A., Barrientos M. N. Macho Natalia, Chernykh D. V. Denis Vyacheslavovich
Resumo:Title screen
The hypothesis of a km-thick ice shelf covering the entire Arctic Ocean during peak glacial conditions was proposed nearly half a century ago. Floating ice shelves preserve few direct traces after their disappearance, making reconstructions difficult. Seafloor imprints of ice shelves should, however, exist where ice grounded along their flow paths. Here we present new evidence of ice-shelf groundings on bathymetric highs in the central Arctic Ocean, resurrecting the concept of an ice shelf extending over the entire central Arctic Ocean during at least one previous ice age. New and previously mapped glacial landforms together reveal flow of a spatially coherent, in some regions >1-km thick, central Arctic Ocean ice shelf dated to marine isotope stage 6 (~140 ka). Bathymetric highs were likely critical in the ice-shelf development by acting as pinning points where stabilizing ice rises formed, thereby providing sufficient back stress to allow ice shelf thickening.
Режим доступа: по договору с организацией-держателем ресурса
Publicado em: 2016
Assuntos:
электронный ресурс
труды учёных ТПУ
климат
изменения
таяние
органический углерод
SWERUS-C3
исследовательские экспедиции
Сибирский арктический шельф
океанография
Берингия
Восточная Арктика
моря
шельфы
Северный Ледовитый океан
Acesso em linha:http://dx.doi.org/10.1038/ncomms10365
http://www.readcube.com/articles/10.1038/ncomms10365
Formato: Recurso Electrónico Capítulo de Livro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=647968

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