Late Quaternary Atmospheric CH 4 Isotope Record Suggests Marine Clathrates Are Stable
One explanation for the abrupt increases in atmospheric CH 4 , that occurred repeatedly during the last glacial cycle involves clathrate destabalization events. Because marine clathrates have a distinct deuterium/hydrogen (D/H) isotope ratio, any such destabilization event should cause the D/H ratio...
Published in: | Science |
---|---|
Main Author: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Association for the Advancement of Science (AAAS)
2006
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1126/science.1121235 https://www.science.org/doi/pdf/10.1126/science.1121235 |
id |
craaas:10.1126/science.1121235 |
---|---|
record_format |
openpolar |
spelling |
craaas:10.1126/science.1121235 2024-06-09T07:46:24+00:00 Late Quaternary Atmospheric CH 4 Isotope Record Suggests Marine Clathrates Are Stable Sowers, Todd 2006 http://dx.doi.org/10.1126/science.1121235 https://www.science.org/doi/pdf/10.1126/science.1121235 en eng American Association for the Advancement of Science (AAAS) Science volume 311, issue 5762, page 838-840 ISSN 0036-8075 1095-9203 journal-article 2006 craaas https://doi.org/10.1126/science.1121235 2024-05-16T12:54:21Z One explanation for the abrupt increases in atmospheric CH 4 , that occurred repeatedly during the last glacial cycle involves clathrate destabalization events. Because marine clathrates have a distinct deuterium/hydrogen (D/H) isotope ratio, any such destabilization event should cause the D/H ratio of atmospheric CH 4 (δD CH4 ) to increase. Analyses of air trapped in the ice from the second Greenland ice sheet project show stable and/or decreasing δD CH4 values during the end of the Younger and Older Dryas periods and one stadial period, suggesting that marine clathrates were stable during these abrupt warming episodes. Elevated glacial δD CH4 values may be the result of a lower ratio of net to gross wetland CH 4 emissions and an increase in petroleum-based emissions. Article in Journal/Newspaper Greenland Greenland Ice Sheet Project Ice Sheet AAAS Resource Center (American Association for the Advancement of Science) Greenland Science 311 5762 838 840 |
institution |
Open Polar |
collection |
AAAS Resource Center (American Association for the Advancement of Science) |
op_collection_id |
craaas |
language |
English |
description |
One explanation for the abrupt increases in atmospheric CH 4 , that occurred repeatedly during the last glacial cycle involves clathrate destabalization events. Because marine clathrates have a distinct deuterium/hydrogen (D/H) isotope ratio, any such destabilization event should cause the D/H ratio of atmospheric CH 4 (δD CH4 ) to increase. Analyses of air trapped in the ice from the second Greenland ice sheet project show stable and/or decreasing δD CH4 values during the end of the Younger and Older Dryas periods and one stadial period, suggesting that marine clathrates were stable during these abrupt warming episodes. Elevated glacial δD CH4 values may be the result of a lower ratio of net to gross wetland CH 4 emissions and an increase in petroleum-based emissions. |
format |
Article in Journal/Newspaper |
author |
Sowers, Todd |
spellingShingle |
Sowers, Todd Late Quaternary Atmospheric CH 4 Isotope Record Suggests Marine Clathrates Are Stable |
author_facet |
Sowers, Todd |
author_sort |
Sowers, Todd |
title |
Late Quaternary Atmospheric CH 4 Isotope Record Suggests Marine Clathrates Are Stable |
title_short |
Late Quaternary Atmospheric CH 4 Isotope Record Suggests Marine Clathrates Are Stable |
title_full |
Late Quaternary Atmospheric CH 4 Isotope Record Suggests Marine Clathrates Are Stable |
title_fullStr |
Late Quaternary Atmospheric CH 4 Isotope Record Suggests Marine Clathrates Are Stable |
title_full_unstemmed |
Late Quaternary Atmospheric CH 4 Isotope Record Suggests Marine Clathrates Are Stable |
title_sort |
late quaternary atmospheric ch 4 isotope record suggests marine clathrates are stable |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
2006 |
url |
http://dx.doi.org/10.1126/science.1121235 https://www.science.org/doi/pdf/10.1126/science.1121235 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland Ice Sheet Project Ice Sheet |
genre_facet |
Greenland Greenland Ice Sheet Project Ice Sheet |
op_source |
Science volume 311, issue 5762, page 838-840 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.1121235 |
container_title |
Science |
container_volume |
311 |
container_issue |
5762 |
container_start_page |
838 |
op_container_end_page |
840 |
_version_ |
1801376244654145536 |