Meltwater pulse 1A

Graphic showing the rise in sea level during the end of the last ice age with a marker for meltwater pulse 1A

As meltwater pulse 1a a phase particularly rapid rise of the sea level at the end of the last cold denotes that is causally associated with a rapid deglaciation and the entry of large amounts of water in the seas melting at that time. The pulse started about 14,200 to 14,700 years ago and caused the sea level to rise globally by 20 meters within 400 to 500 years. The meltwater pulse triggered the Antarctic cold relapse .

A collapsing ice sheet , presumably in Antarctica or between Canada and Greenland, is assumed to be the source of the meltwater .

Individual evidence

↑ M. Kienast, TJJ Hanebuth, C. and S. Pelejero Steinke: Synchroneity of meltwater pulse 1a and the Bølling warming: New evidence from the South China Sea . In: Geology, Vol. 31, No. 1, pp. 67-70, 2003, see abstract online
↑ ^a ^b J. A. Weaver, OA Saenko, PU Clark and JX Mitrovica: Meltwater Pulse 1A from Antarctica as trigger of the Bølling-Allerød Warm Interval . In: Science, Vol. 299, No. 5613, pp. 1709-1713, 2003, doi : 10.1126 / science.1081002
^ PU Clark, JX Mitrovica, GA Milne and ME Tamisie: Sea-Level Fingerprinting as a Direct Test for the Source of Global Meltwater Pulse IA . In: Science, Vol. 295, No. 5564, pp. 2438-2441, 2002, doi : 10.1126 / science.1068797
↑ Lauren Gregoire: Deglacial rapid sea level rises caused by ice-sheet saddle collapses . In: Nature Publishing Group, a division of Macmillan Publishers Limited. (Ed.): Nature . 487, No. 7406, July 11, 2012, pp. 219-222. bibcode : 2012Natur.487..219G . doi : 10.1038 / nature11257 .

[1] M. Kienast, TJJ Hanebuth, C. and S. Pelejero Steinke: Synchroneity of meltwater pulse 1a and the Bølling warming: New evidence from the South China Sea . In: Geology, Vol. 31, No. 1, pp. 67-70, 2003, see abstract online

[Weaver_et_al._2003-2] J. A. Weaver, OA Saenko, PU Clark and JX Mitrovica: Meltwater Pulse 1A from Antarctica as trigger of the Bølling-Allerød Warm Interval . In: Science, Vol. 299, No. 5613, pp. 1709-1713, 2003, doi : 10.1126 / science.1081002

[3] PU Clark, JX Mitrovica, GA Milne and ME Tamisie: Sea-Level Fingerprinting as a Direct Test for the Source of Global Meltwater Pulse IA . In: Science, Vol. 295, No. 5564, pp. 2438-2441, 2002, doi : 10.1126 / science.1068797

[4] Lauren Gregoire: Deglacial rapid sea level rises caused by ice-sheet saddle collapses . In: Nature Publishing Group, a division of Macmillan Publishers Limited. (Ed.): Nature . 487, No. 7406, July 11, 2012, pp. 219-222. bibcode : 2012Natur.487..219G . doi : 10.1038 / nature11257 .