About: Late-Holocene changes in character and behaviour of land-terminating glaciers on James Ross Island, Antarctica

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About: Late-Holocene changes in character and behaviour of land-terminating glaciers on James Ross Island, Antarctica Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Virtually no information is available on the response of land-terminating Antarctic Peninsula glaciers to climate change on a centennial timescale. This paper analyses the topography, geomorphology and sedimentology of prominent moraines on James Ross Island, Antarctica, to determine geometric changes and to interpret glacier behaviour. The moraines are very likely due to a late-Holocene phase of advance and featured (1) shearing and thrusting within the snout, (2) shearing and deformation of basal sediment, (3) more supraglacial debris than at present and (4) short distances of sediment transport. Retreat of 100m and thinning of 15–20m has produced a loss of 0.1km3 of ice. The pattern of surface lowering is asymmetric. These geometrical changes are suggested most simply to be due to a net negative mass balance caused by a drier climate. Comparisons of the moraines with the current glaciological surface structure of the glaciers permits speculation of a transition from a polythermal to a cold-based thermal regime. Small land-terminating glaciers in the northern Antarctic Peninsula region could be cooling despite a warming climate. Virtually no information is available on the response of land-terminating Antarctic Peninsula glaciers to climate change on a centennial timescale. This paper analyses the topography, geomorphology and sedimentology of prominent moraines on James Ross Island, Antarctica, to determine geometric changes and to interpret glacier behaviour. The moraines are very likely due to a late-Holocene phase of advance and featured (1) shearing and thrusting within the snout, (2) shearing and deformation of basal sediment, (3) more supraglacial debris than at present and (4) short distances of sediment transport. Retreat of 100m and thinning of 15–20m has produced a loss of 0.1km3 of ice. The pattern of surface lowering is asymmetric. These geometrical changes are suggested most simply to be due to a net negative mass balance caused by a drier climate. Comparisons of the moraines with the current glaciological surface structure of the glaciers permits speculation of a transition from a polythermal to a cold-based thermal regime. Small land-terminating glaciers in the northern Antarctic Peninsula region could be cooling despite a warming climate. (en)
Title	Late-Holocene changes in character and behaviour of land-terminating glaciers on James Ross Island, Antarctica Late-Holocene changes in character and behaviour of land-terminating glaciers on James Ross Island, Antarctica (en)
skos:prefLabel	Late-Holocene changes in character and behaviour of land-terminating glaciers on James Ross Island, Antarctica Late-Holocene changes in character and behaviour of land-terminating glaciers on James Ross Island, Antarctica (en)
skos:notation	RIV/00025798:_____/12:00000211!RIV13-MZP-00025798
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GA205/09/1876), P(SPII1A9/23/07)
http://linked.open...iv/cisloPeriodika	212
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Nývlt, Daniel
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Česká geologická služba
http://linked.open...dnocenehoVysledku	146524
http://linked.open...ai/riv/idVysledku	RIV/00025798:_____/12:00000211
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	glacier retreat, rheology, land-terminating glaciers, Late Holocene, James Ross Island, Antarctica (en)
http://linked.open.../riv/klicoveSlovo	James Ross Island Late Holocene land-terminating glaciers rheology Antarctica glacier retreat
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[2F6D39B5E72F]
http://linked.open...i/riv/nazevZdroje	Journal of Glaciology
http://linked.open...in/vavai/riv/obor	DE
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	The contribution of the Czech Republic to the detection of the stage of the Earth Ozone layer and solar UV-radiation in Antartica, paleoclimatological and paleogeogr. reconstruction of the selected area of Antartica and related geological research Recent deglaciation of the northern part of James Ross Island, Antarctica
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	58
http://linked.open...iv/tvurceVysledku	Nývlt, Daniel Carrivick, Jonathan Davies, Bethan Glasser, Neil Hambrey, Mike
http://linked.open...ain/vavai/riv/wos	000312479400013
issn	0022-1430
number of pages	15 (xsd:int)
http://bibframe.org/vocab/doi	10.3189/2012JoG11J148

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