کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6446049 | 1640790 | 2016 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Diachronous retreat of the Greenland ice sheet during the last deglaciation
ترجمه فارسی عنوان
عقب نشینی دیافراگم از ورقه یخ گرینلند در طی آخرین انهدام
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی
چکیده انگلیسی
The last deglaciation is the most recent interval of large-scale climate change that drove the Greenland ice sheet from continental shelf to within its present extent. Here, we use a database of 645 published 10Be ages from Greenland to document the spatial and temporal patterns of retreat of the Greenland ice sheet during the last deglaciation. Following initial retreat of its marine margins, most land-based deglaciation occurred in Greenland following the end of the Younger Dryas cold period (12.9-11.7Â ka). However, deglaciation in east Greenland peaked significantly earlier (13.0-11.5Â ka) than that in south Greenland (11.0-10Â ka) or west Greenland (10.5-7.0Â ka). The terrestrial deglaciation of east and south Greenland coincide with adjacent ocean warming. 14C ages and a recent ice-sheet model reconstruction do not capture this progression of terrestrial deglacial ages from east to west Greenland, showing deglaciation occurring later than observed in 10Be ages. This model-data misfit likely reflects the absence of realistic ice-ocean interactions. We suggest that oceanic changes may have played an important role in driving the spatial-temporal ice-retreat pattern evident in the 10Be data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Quaternary Science Reviews - Volume 145, 1 August 2016, Pages 243-258
Journal: Quaternary Science Reviews - Volume 145, 1 August 2016, Pages 243-258
نویسندگان
G. Sinclair, A.E. Carlson, A.C. Mix, B.S. Lecavalier, G. Milne, A. Mathias, C. Buizert, R. DeConto,