Stable-Isotope Time Series and Precipitation Origin from Firn-Core and Snow Samples, Altai Glaciers, Siberia
In the summers of 2001 and 2002, glacio-climatological research was performed at 4110-4120 m a.s.l. on the Belukha snow/firn plateau, Siberian Altai. Hundreds of samples from snow pits and a 21 m snow/firn core were collected to establish the annual/seasonal/monthly depth-accumulation scale, based o...
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ftmaineuniv:oai:digitalcommons.library.umaine.edu:ers_facpub-1086 2023-05-15T15:08:21+02:00 Stable-Isotope Time Series and Precipitation Origin from Firn-Core and Snow Samples, Altai Glaciers, Siberia Aizen, Vladimir B. Aizen, Elena M. Fujita, Koji Nikitin, Stanislav A. Kreutz, Karl J. Takeuchi, L. Nozomu 2005-01-01T08:00:00Z application/pdf https://digitalcommons.library.umaine.edu/ers_facpub/87 https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1086&context=ers_facpub unknown DigitalCommons@UMaine https://digitalcommons.library.umaine.edu/ers_facpub/87 https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1086&context=ers_facpub This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. In addition, no permission is required from the rights-holder(s) for educational uses. For other uses, you need to obtain permission from the rights-holder(s). Earth Science Faculty Scholarship Earth Sciences text 2005 ftmaineuniv 2023-03-12T18:49:12Z In the summers of 2001 and 2002, glacio-climatological research was performed at 4110-4120 m a.s.l. on the Belukha snow/firn plateau, Siberian Altai. Hundreds of samples from snow pits and a 21 m snow/firn core were collected to establish the annual/seasonal/monthly depth-accumulation scale, based on stable-isotope records, stratigraphic analyses and meteorological and synoptic data. The fluctuations of water stable-isotope records show well-preserved seasonal variations. The delta(18)O and delta D relationships in precipitation, snow pits and the snow/firn core have the same slope to the covariance as that of the global meteoric water line. The origins of precipitation nourishing the Belukha plateau were determined based on clustering analysis of delta(18)O and d-excess records and examination of synoptic atmospheric patterns. Calibration and validation of the developed clusters occurred at event and monthly timescales with about 15% uncertainty. Two distinct moisture sources were shown: oceanic sources with d-excess < 12 parts per thousand, and the Aral-Caspian closed drainage basin sources with d-excess > 12 parts per thousand. Two-thirds of the annual accumulation was from oceanic precipitation, of which more than half had isotopic ratios corresponding to moisture evaporated over the Atlantic Ocean. Precipitation from the Arctic/Pacific Ocean had the lowest deuterium excess, contributing one-tenth to annual accumulation. Text Arctic Siberia The University of Maine: DigitalCommons@UMaine Arctic Pacific |
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Earth Sciences |
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Earth Sciences Aizen, Vladimir B. Aizen, Elena M. Fujita, Koji Nikitin, Stanislav A. Kreutz, Karl J. Takeuchi, L. Nozomu Stable-Isotope Time Series and Precipitation Origin from Firn-Core and Snow Samples, Altai Glaciers, Siberia |
topic_facet |
Earth Sciences |
description |
In the summers of 2001 and 2002, glacio-climatological research was performed at 4110-4120 m a.s.l. on the Belukha snow/firn plateau, Siberian Altai. Hundreds of samples from snow pits and a 21 m snow/firn core were collected to establish the annual/seasonal/monthly depth-accumulation scale, based on stable-isotope records, stratigraphic analyses and meteorological and synoptic data. The fluctuations of water stable-isotope records show well-preserved seasonal variations. The delta(18)O and delta D relationships in precipitation, snow pits and the snow/firn core have the same slope to the covariance as that of the global meteoric water line. The origins of precipitation nourishing the Belukha plateau were determined based on clustering analysis of delta(18)O and d-excess records and examination of synoptic atmospheric patterns. Calibration and validation of the developed clusters occurred at event and monthly timescales with about 15% uncertainty. Two distinct moisture sources were shown: oceanic sources with d-excess < 12 parts per thousand, and the Aral-Caspian closed drainage basin sources with d-excess > 12 parts per thousand. Two-thirds of the annual accumulation was from oceanic precipitation, of which more than half had isotopic ratios corresponding to moisture evaporated over the Atlantic Ocean. Precipitation from the Arctic/Pacific Ocean had the lowest deuterium excess, contributing one-tenth to annual accumulation. |
format |
Text |
author |
Aizen, Vladimir B. Aizen, Elena M. Fujita, Koji Nikitin, Stanislav A. Kreutz, Karl J. Takeuchi, L. Nozomu |
author_facet |
Aizen, Vladimir B. Aizen, Elena M. Fujita, Koji Nikitin, Stanislav A. Kreutz, Karl J. Takeuchi, L. Nozomu |
author_sort |
Aizen, Vladimir B. |
title |
Stable-Isotope Time Series and Precipitation Origin from Firn-Core and Snow Samples, Altai Glaciers, Siberia |
title_short |
Stable-Isotope Time Series and Precipitation Origin from Firn-Core and Snow Samples, Altai Glaciers, Siberia |
title_full |
Stable-Isotope Time Series and Precipitation Origin from Firn-Core and Snow Samples, Altai Glaciers, Siberia |
title_fullStr |
Stable-Isotope Time Series and Precipitation Origin from Firn-Core and Snow Samples, Altai Glaciers, Siberia |
title_full_unstemmed |
Stable-Isotope Time Series and Precipitation Origin from Firn-Core and Snow Samples, Altai Glaciers, Siberia |
title_sort |
stable-isotope time series and precipitation origin from firn-core and snow samples, altai glaciers, siberia |
publisher |
DigitalCommons@UMaine |
publishDate |
2005 |
url |
https://digitalcommons.library.umaine.edu/ers_facpub/87 https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1086&context=ers_facpub |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
Arctic Siberia |
genre_facet |
Arctic Siberia |
op_source |
Earth Science Faculty Scholarship |
op_relation |
https://digitalcommons.library.umaine.edu/ers_facpub/87 https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1086&context=ers_facpub |
op_rights |
This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. In addition, no permission is required from the rights-holder(s) for educational uses. For other uses, you need to obtain permission from the rights-holder(s). |
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