Title Differences in ice retreat across Pine Island Bay, West Antarctica, since the last glacial maximum; indications from multichannel seismic reflection data
Author Uenzelmann-Neben, G.; Gohl, K.; Larter, R.D.; Schlüter, P.
Author Affil Uenzelmann-Neben, G., Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Federal Republic of Germany. Other: British Antarctic Survey, United Kingdom
Source Open-File Report - U. S. Geological Survey, No.OF2007-1047, Short Research Paper 084; Tenth international symposium on Antarctic earth sciences; Antarctica; a keystone in a changing world, Santa Barbara, CA, Aug. 26-Sept. 1, 2007, edited by A. Cooper and C. Raymond; International Symposium on Antarctic Earth Sciences. Publisher: U. S. Geological Survey, Reston, VA, United States. ISSN: 0196- 1497
Publication Date 2007
Notes In English. 11 refs. Ant. Acc. No: 82921. CRREL Acc. No: 62000484
Index Terms climatic change; computer applications; profiles; geophysical surveys; meltwater; paleoclimatology; Pleistocene; seismic reflection; seismic surveys; surveys; Antarctica--West Antarctic ice sheet; Antarctica--West Antarctica; Antarctic ice sheet; Antarctica; Cenozoic; climate change; data processing; geophysical methods; geophysical profiles; International Polar Year 2007-08; IPY 2007-08 Research Publications; last glacial maximum; Pine Island Bay; Quaternary; reflection methods; seismic methods; seismic profiles; upper Pleistocene; USGS; West Antarctic ice sheet; West Antarctica
Abstract An understanding of the glacial history of Pine Island Bay (PIB) is essential for refining models of the future stability of the West Antarctic Ice Sheet (WAIS). New multichannel seismic reflection data from inner PIB are interpreted in context of previously published reconstructions for the retreat history in this area since the Last Glacial Maximum. Differences in the behavior of the ice sheet during deglaciation are shown to exist for the western and eastern parts of PIB. While we can identify only a thin veneer of sedimentary deposits in western PIB, eastern PIB shows sedimentary layers <= 400 msTWT. This is interpreted as a result of differences in ice retreat: a fast ice retreat in western PIB accompanied by rapid basal melting led to production of large meltwater streams, a slower ice retreat in eastern PIB is most probably the result of smaller drainage basins resulting in less meltwater production.
URL http://hdl.handle.net/10.3133/of2077-1047.srp084
Publication Type conference paper or compendium article
Record ID 279762