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Recent changes in the flow of the Ross Ice Shelf, West Antarctica

Cited 10 time in wos
Cited 11 time in scopus
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dc.contributor.authorC. L. Hulbe-
dc.contributor.authorT. Haran-
dc.contributor.authorJ. Bohlander-
dc.contributor.authorLee, Choon-Ki-
dc.contributor.authorT. A. Scambos-
dc.coverage.spatialRoss Ice Shelf-
dc.coverage.spatialWest Antarctica-
dc.date.accessioned2018-03-20T13:47:01Z-
dc.date.available2018-03-20T13:47:01Z-
dc.date.issued2013-
dc.identifier.urihttps://repository.kopri.re.kr/handle/201206/6255-
dc.description.abstractComparison of surface velocities measured during the Ross Ice Shelf Geophysical and Glaciological Survey (RIGGS, 1973 to 1978) and velocities measured via feature tracking between two Moderate-resolution Imaging Spectroradiometer (MODIS) mosaics (compiled from 2003/4 and 2008/9 images) reveals widespread slowing and minor areas of acceleration in the Ross Ice Shelf (RIS) over the approximately 30 year interval. The largest changes (? 13 ma? 2? 13 ma? 2) occur near the Whillans and Mercer Ice Streams grounding line in the southernmost part of the ice shelf. Speed has increased over the interval (up to 5 ma? 25 ma? 2) between the MacAyeal Ice Stream grounding line and the shelf front, and along the eastern shelf front. Changes in ice thickness computed using ICESat laser altimetry are used together with a well-tested model of the ice shelf to investigate underlying causes of change in the flow of the ice shelf over time. The observed transients represent a combination of recent forcings and ongoing response to ice stream discharge variations over the past millennium. While evidence of older events may be present, the modern signal is dominated by shorter time scale events, including the stagnation of Kamb Ice Stream about 160 years ago, recent changes in basal drag on the Whillans Ice Stream ice plain and, perhaps, iceberg calving. Details in embayment geometry, for exampsaics (compiled from 2003/4 and 2008/9 images) reveals widespread slowing and minor areas of acceleration in the Ross Ice Shelf (RIS) over the approximately 30 year interval. The largest changes (? 13 ma? 2? 13 ma? 2) occur near the Whillans and Mercer Ice Streams grounding line in the southernmost part of the ice shelf. Speed has increased over the interval (up to 5 ma? 25 ma? 2) between the MacAyeal Ice Stream grounding line and the shelf front, and along the eastern shelf front. Changes in ice thickness computed using ICESat laser altimetry are used together with a well-tested model of the ice shelf to investigate underlying causes of change in the flow of the ice shelf over time. The observed transients represent a combination of recent forcings and ongoing response to ice stream discharge variations over the past millennium. While evidence of older events may be present, the modern signal is dominated by shorter time scale events, including the stagnation of Kamb Ice Stream about 160 years ago, recent changes in basal drag on the Whillans Ice Stream ice plain and, perhaps, iceberg calving. Details in embayment geometry, for examp-
dc.languageEnglish-
dc.publisherElsevier-
dc.subjectGeochemistry & Geophysics-
dc.titleRecent changes in the flow of the Ross Ice Shelf, West Antarctica-
dc.title.alternative서남극 로스 빙붕 흐름의 최근 변화-
dc.typeArticle-
dc.identifier.bibliographicCitationC. L. Hulbe, et al. 2013. "Recent changes in the flow of the Ross Ice Shelf, West Antarctica". <em>EARTH AND PLANETARY SCIENCE LETTERS</em>, 376(1): 54-62.-
dc.citation.titleEARTH AND PLANETARY SCIENCE LETTERS-
dc.citation.volume376-
dc.citation.number1-
dc.identifier.doi10.1016/j.epsl.2013.06.013-
dc.citation.startPage54-
dc.citation.endPage62-
dc.description.articleClassificationSCI-
dc.description.jcrRateJCR 2011:5.26-
dc.subject.keywordRoss Ice Shelf-
dc.subject.keywordWest Antarctica-
dc.subject.keywordglacier change-
dc.subject.keywordmodeling-
dc.subject.keywordremote sensing-
dc.identifier.localId2013-0271-
dc.identifier.scopusid2-s2.0-84882847156-
dc.identifier.wosid000324967900006-
Appears in Collections  
2011-2013, Interaction between cryosphere and lithosphere near the Jangbogo Station: Integrated monitoring system for the David Glacier and study on evolution of the glacier (11-13) / Seo, Ki-Weon; Lee, Won Sang
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