Groundwater Hydrology and Stable Isotope Analysis of an Open‐System Pingo in Northwestern Mongolia
ABSTRACT The first record of stable isotopes through a complete sequence of ice within an open‐system pingo in northwestern Mongolia indicates a complex history of ice formation and pingo growth. A continuous section of ice 32 m long was cored through the centre of Mongot Pingo, and ice cores were a...
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crwiley:10.1002/ppp.1773 2024-09-15T18:11:31+00:00 Groundwater Hydrology and Stable Isotope Analysis of an Open‐System Pingo in Northwestern Mongolia Yoshikawa, Kenji Sharkhuu, Natsagdorj Sharkhuu, Anarmaa 2013 http://dx.doi.org/10.1002/ppp.1773 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1773 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1773 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 24, issue 3, page 175-183 ISSN 1045-6740 1099-1530 journal-article 2013 crwiley https://doi.org/10.1002/ppp.1773 2024-09-05T05:06:25Z ABSTRACT The first record of stable isotopes through a complete sequence of ice within an open‐system pingo in northwestern Mongolia indicates a complex history of ice formation and pingo growth. A continuous section of ice 32 m long was cored through the centre of Mongot Pingo, and ice cores were analysed for stable isotopes and chemical composition. Two different stable isotope patterns in separate ice sections are identified: 1 open‐system freezing and 2 semi‐closed system (or closed system) freezing. Discharge measurements were observed in 2009 after drilling through pingo ice to artesian sub‐pingo water and compared with data collected from the same pingo in 1968. Approximately 850–950 m 3 of sub‐pingo water discharged within 120 h during drilling in both 1968 and 2009, a volume equivalent to about 10 per cent of the current pingo ice volume. Between 1968 and 2009, permafrost (pingo ice) thickened by about 60 cm (1.46 cm per year), from 32.0 to 32.6 m, due to the decrease in sub‐pingo artesian water pressure after water release from the 1968 drilling. The major mechanism for ice formation at this pingo is groundwater artesian pressure, though not continuously. Four major stages of pingo growth after 8790 yr BP are inferred. Copyright © 2013 John Wiley & Sons, Ltd. Article in Journal/Newspaper Ice open system Pingo permafrost Permafrost and Periglacial Processes Wiley Online Library Permafrost and Periglacial Processes 24 3 175 183 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
ABSTRACT The first record of stable isotopes through a complete sequence of ice within an open‐system pingo in northwestern Mongolia indicates a complex history of ice formation and pingo growth. A continuous section of ice 32 m long was cored through the centre of Mongot Pingo, and ice cores were analysed for stable isotopes and chemical composition. Two different stable isotope patterns in separate ice sections are identified: 1 open‐system freezing and 2 semi‐closed system (or closed system) freezing. Discharge measurements were observed in 2009 after drilling through pingo ice to artesian sub‐pingo water and compared with data collected from the same pingo in 1968. Approximately 850–950 m 3 of sub‐pingo water discharged within 120 h during drilling in both 1968 and 2009, a volume equivalent to about 10 per cent of the current pingo ice volume. Between 1968 and 2009, permafrost (pingo ice) thickened by about 60 cm (1.46 cm per year), from 32.0 to 32.6 m, due to the decrease in sub‐pingo artesian water pressure after water release from the 1968 drilling. The major mechanism for ice formation at this pingo is groundwater artesian pressure, though not continuously. Four major stages of pingo growth after 8790 yr BP are inferred. Copyright © 2013 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Yoshikawa, Kenji Sharkhuu, Natsagdorj Sharkhuu, Anarmaa |
spellingShingle |
Yoshikawa, Kenji Sharkhuu, Natsagdorj Sharkhuu, Anarmaa Groundwater Hydrology and Stable Isotope Analysis of an Open‐System Pingo in Northwestern Mongolia |
author_facet |
Yoshikawa, Kenji Sharkhuu, Natsagdorj Sharkhuu, Anarmaa |
author_sort |
Yoshikawa, Kenji |
title |
Groundwater Hydrology and Stable Isotope Analysis of an Open‐System Pingo in Northwestern Mongolia |
title_short |
Groundwater Hydrology and Stable Isotope Analysis of an Open‐System Pingo in Northwestern Mongolia |
title_full |
Groundwater Hydrology and Stable Isotope Analysis of an Open‐System Pingo in Northwestern Mongolia |
title_fullStr |
Groundwater Hydrology and Stable Isotope Analysis of an Open‐System Pingo in Northwestern Mongolia |
title_full_unstemmed |
Groundwater Hydrology and Stable Isotope Analysis of an Open‐System Pingo in Northwestern Mongolia |
title_sort |
groundwater hydrology and stable isotope analysis of an open‐system pingo in northwestern mongolia |
publisher |
Wiley |
publishDate |
2013 |
url |
http://dx.doi.org/10.1002/ppp.1773 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1773 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1773 |
genre |
Ice open system Pingo permafrost Permafrost and Periglacial Processes |
genre_facet |
Ice open system Pingo permafrost Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes volume 24, issue 3, page 175-183 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.1773 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
24 |
container_issue |
3 |
container_start_page |
175 |
op_container_end_page |
183 |
_version_ |
1810449117361471488 |