Reconstruction of the depositional environment upstream of Potanin Glacier, Mongolian Altai, from pollen analysis
This study analyzed pollen in snow pits dug in September 2008 and September 2009 upstream of Potanin Glacier in the Mongolian Altai Mountains, which is a summer accumulation-type glacier, to investigate the environment for recent snow deposits. The snow pit observations in both years were carried ou...
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2012
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Online Access: | https://doi.org/10.1088/1748-9326/7/3/035402 https://doaj.org/article/51aca8a1702e4a88aa8eb528d60ee1dd |
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ftdoajarticles:oai:doaj.org/article:51aca8a1702e4a88aa8eb528d60ee1dd 2023-09-05T13:20:12+02:00 Reconstruction of the depositional environment upstream of Potanin Glacier, Mongolian Altai, from pollen analysis Fumio Nakazawa Keiko Konya Tsutomu Kadota Tetsuo Ohata 2012-01-01T00:00:00Z https://doi.org/10.1088/1748-9326/7/3/035402 https://doaj.org/article/51aca8a1702e4a88aa8eb528d60ee1dd EN eng IOP Publishing https://doi.org/10.1088/1748-9326/7/3/035402 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/7/3/035402 1748-9326 https://doaj.org/article/51aca8a1702e4a88aa8eb528d60ee1dd Environmental Research Letters, Vol 7, Iss 3, p 035402 (2012) pollen glacier dating ice core Altai Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 article 2012 ftdoajarticles https://doi.org/10.1088/1748-9326/7/3/035402 2023-08-13T00:37:42Z This study analyzed pollen in snow pits dug in September 2008 and September 2009 upstream of Potanin Glacier in the Mongolian Altai Mountains, which is a summer accumulation-type glacier, to investigate the environment for recent snow deposits. The snow pit observations in both years were carried out at sites 0 and 4, which are 3752 and 3890 m above sea level, respectively. Seasonal layers of the pits were identified according to the taxon of pollen scattered during different seasons. In the 2007 and 2008 layers, concentration peaks of pollen taxa scattered from spring to summer were found at the same depth. Thus, the summer melt reached the spring layer such that pollen grains in the melted layer became concentrated on the summer melt surface and caused the pollen peaks. In contrast, the concentration peaks associated with each season appeared at different depths in the 2009 layer, suggesting that the degree of melting in 2009 was less than that in 2007 and 2008. This interpretation was supported by summer temperature data (June–August) for this region. Deviations in summer air temperatures from mean monthly temperatures for the summers of 1990–2009 were negative in 2009, whereas they were positive in 2007 and 2008. Article in Journal/Newspaper ice core Directory of Open Access Journals: DOAJ Articles Environmental Research Letters 7 3 035402 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
pollen glacier dating ice core Altai Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
spellingShingle |
pollen glacier dating ice core Altai Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 Fumio Nakazawa Keiko Konya Tsutomu Kadota Tetsuo Ohata Reconstruction of the depositional environment upstream of Potanin Glacier, Mongolian Altai, from pollen analysis |
topic_facet |
pollen glacier dating ice core Altai Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
description |
This study analyzed pollen in snow pits dug in September 2008 and September 2009 upstream of Potanin Glacier in the Mongolian Altai Mountains, which is a summer accumulation-type glacier, to investigate the environment for recent snow deposits. The snow pit observations in both years were carried out at sites 0 and 4, which are 3752 and 3890 m above sea level, respectively. Seasonal layers of the pits were identified according to the taxon of pollen scattered during different seasons. In the 2007 and 2008 layers, concentration peaks of pollen taxa scattered from spring to summer were found at the same depth. Thus, the summer melt reached the spring layer such that pollen grains in the melted layer became concentrated on the summer melt surface and caused the pollen peaks. In contrast, the concentration peaks associated with each season appeared at different depths in the 2009 layer, suggesting that the degree of melting in 2009 was less than that in 2007 and 2008. This interpretation was supported by summer temperature data (June–August) for this region. Deviations in summer air temperatures from mean monthly temperatures for the summers of 1990–2009 were negative in 2009, whereas they were positive in 2007 and 2008. |
format |
Article in Journal/Newspaper |
author |
Fumio Nakazawa Keiko Konya Tsutomu Kadota Tetsuo Ohata |
author_facet |
Fumio Nakazawa Keiko Konya Tsutomu Kadota Tetsuo Ohata |
author_sort |
Fumio Nakazawa |
title |
Reconstruction of the depositional environment upstream of Potanin Glacier, Mongolian Altai, from pollen analysis |
title_short |
Reconstruction of the depositional environment upstream of Potanin Glacier, Mongolian Altai, from pollen analysis |
title_full |
Reconstruction of the depositional environment upstream of Potanin Glacier, Mongolian Altai, from pollen analysis |
title_fullStr |
Reconstruction of the depositional environment upstream of Potanin Glacier, Mongolian Altai, from pollen analysis |
title_full_unstemmed |
Reconstruction of the depositional environment upstream of Potanin Glacier, Mongolian Altai, from pollen analysis |
title_sort |
reconstruction of the depositional environment upstream of potanin glacier, mongolian altai, from pollen analysis |
publisher |
IOP Publishing |
publishDate |
2012 |
url |
https://doi.org/10.1088/1748-9326/7/3/035402 https://doaj.org/article/51aca8a1702e4a88aa8eb528d60ee1dd |
genre |
ice core |
genre_facet |
ice core |
op_source |
Environmental Research Letters, Vol 7, Iss 3, p 035402 (2012) |
op_relation |
https://doi.org/10.1088/1748-9326/7/3/035402 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/7/3/035402 1748-9326 https://doaj.org/article/51aca8a1702e4a88aa8eb528d60ee1dd |
op_doi |
https://doi.org/10.1088/1748-9326/7/3/035402 |
container_title |
Environmental Research Letters |
container_volume |
7 |
container_issue |
3 |
container_start_page |
035402 |
_version_ |
1776200918861086720 |