Glacial geomorphology of the Altai and Western Sayan Mountains, Central Asia
In this article, we present a map of the glacial geomorphology of the Altai and Western Sayan Mountains, covering an area of almost 600,000 km 2 . Although numerous studies provide evidence for restricted Pleistocene glaciations in this area, others have hypothesized the past existence of an extensi...
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Taylor & Francis
2015
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ftdatacite:10.6084/m9.figshare.1267368.v2 2023-05-15T16:41:24+02:00 Glacial geomorphology of the Altai and Western Sayan Mountains, Central Asia Blomdin, Robin Heyman, Jakob Stroeven, Arjen P. Hättestrand, Clas Harbor, Jonathan M. Gribenski, Natacha Jansson, Krister N. Petrakov, Dmitry A. Ivanov, Mikhail N. Orkhonselenge Alexander Rudoy, Alexei N. Walther, Michael 2015 https://dx.doi.org/10.6084/m9.figshare.1267368.v2 https://tandf.figshare.com/articles/dataset/Glacial_geomorphology_of_the_Altai_and_Western_Sayan_Mountains_Central_Asia/1267368/2 unknown Taylor & Francis https://dx.doi.org/10.1080/17445647.2014.992177 https://dx.doi.org/10.6084/m9.figshare.1267368 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Computational Biology Cancer Biological Sciences Sociology FOS Sociology Astronomy, Astrophysics, Space Science Ecology FOS Biological sciences Earth and Environmental Sciences dataset Dataset 2015 ftdatacite https://doi.org/10.6084/m9.figshare.1267368.v2 https://doi.org/10.1080/17445647.2014.992177 https://doi.org/10.6084/m9.figshare.1267368 2021-11-05T12:55:41Z In this article, we present a map of the glacial geomorphology of the Altai and Western Sayan Mountains, covering an area of almost 600,000 km 2 . Although numerous studies provide evidence for restricted Pleistocene glaciations in this area, others have hypothesized the past existence of an extensive ice sheet. To provide a framework for accurate glacial reconstructions of the Altai and Western Sayan Mountains, we present a map at a scale of 1:1,000,000 based on a mapping from 30 m resolution ASTER DEM and 15 m/30 m resolution Landsat ETM+ satellite imagery. Four landform classes have been mapped: marginal moraines, glacial lineations, hummocky terrain, and glacial valleys. Our mapping reveals an abundance of glacial erosional and depositional landforms. The distribution of these glacial landforms indicates that the Altai and Western Sayan Mountains have experienced predominantly alpine-style glaciations, with some small ice caps centred on the higher mountain peaks. Large marginal moraine complexes mark glacial advances in intermontane basins. By tracing the outer limits of present-day glaciers, glacial valleys, and moraines, we estimate that the past glacier coverage have totalled to 65,000 km 2 (10.9% of the mapped area), whereas present-day glacier coverage totals only 1300 km 2 (0.2% of the mapped area). This demonstrates the usefulness of remote sensing techniques for mapping the glacial geomorphology in remote mountain areas and for quantifying the past glacier dimensions. The glacial geomorphological map presented here will be used for further detailed reconstructions of the paleoglaciology and paleoclimate of the region. Dataset Ice Sheet DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Computational Biology Cancer Biological Sciences Sociology FOS Sociology Astronomy, Astrophysics, Space Science Ecology FOS Biological sciences Earth and Environmental Sciences |
spellingShingle |
Computational Biology Cancer Biological Sciences Sociology FOS Sociology Astronomy, Astrophysics, Space Science Ecology FOS Biological sciences Earth and Environmental Sciences Blomdin, Robin Heyman, Jakob Stroeven, Arjen P. Hättestrand, Clas Harbor, Jonathan M. Gribenski, Natacha Jansson, Krister N. Petrakov, Dmitry A. Ivanov, Mikhail N. Orkhonselenge Alexander Rudoy, Alexei N. Walther, Michael Glacial geomorphology of the Altai and Western Sayan Mountains, Central Asia |
topic_facet |
Computational Biology Cancer Biological Sciences Sociology FOS Sociology Astronomy, Astrophysics, Space Science Ecology FOS Biological sciences Earth and Environmental Sciences |
description |
In this article, we present a map of the glacial geomorphology of the Altai and Western Sayan Mountains, covering an area of almost 600,000 km 2 . Although numerous studies provide evidence for restricted Pleistocene glaciations in this area, others have hypothesized the past existence of an extensive ice sheet. To provide a framework for accurate glacial reconstructions of the Altai and Western Sayan Mountains, we present a map at a scale of 1:1,000,000 based on a mapping from 30 m resolution ASTER DEM and 15 m/30 m resolution Landsat ETM+ satellite imagery. Four landform classes have been mapped: marginal moraines, glacial lineations, hummocky terrain, and glacial valleys. Our mapping reveals an abundance of glacial erosional and depositional landforms. The distribution of these glacial landforms indicates that the Altai and Western Sayan Mountains have experienced predominantly alpine-style glaciations, with some small ice caps centred on the higher mountain peaks. Large marginal moraine complexes mark glacial advances in intermontane basins. By tracing the outer limits of present-day glaciers, glacial valleys, and moraines, we estimate that the past glacier coverage have totalled to 65,000 km 2 (10.9% of the mapped area), whereas present-day glacier coverage totals only 1300 km 2 (0.2% of the mapped area). This demonstrates the usefulness of remote sensing techniques for mapping the glacial geomorphology in remote mountain areas and for quantifying the past glacier dimensions. The glacial geomorphological map presented here will be used for further detailed reconstructions of the paleoglaciology and paleoclimate of the region. |
format |
Dataset |
author |
Blomdin, Robin Heyman, Jakob Stroeven, Arjen P. Hättestrand, Clas Harbor, Jonathan M. Gribenski, Natacha Jansson, Krister N. Petrakov, Dmitry A. Ivanov, Mikhail N. Orkhonselenge Alexander Rudoy, Alexei N. Walther, Michael |
author_facet |
Blomdin, Robin Heyman, Jakob Stroeven, Arjen P. Hättestrand, Clas Harbor, Jonathan M. Gribenski, Natacha Jansson, Krister N. Petrakov, Dmitry A. Ivanov, Mikhail N. Orkhonselenge Alexander Rudoy, Alexei N. Walther, Michael |
author_sort |
Blomdin, Robin |
title |
Glacial geomorphology of the Altai and Western Sayan Mountains, Central Asia |
title_short |
Glacial geomorphology of the Altai and Western Sayan Mountains, Central Asia |
title_full |
Glacial geomorphology of the Altai and Western Sayan Mountains, Central Asia |
title_fullStr |
Glacial geomorphology of the Altai and Western Sayan Mountains, Central Asia |
title_full_unstemmed |
Glacial geomorphology of the Altai and Western Sayan Mountains, Central Asia |
title_sort |
glacial geomorphology of the altai and western sayan mountains, central asia |
publisher |
Taylor & Francis |
publishDate |
2015 |
url |
https://dx.doi.org/10.6084/m9.figshare.1267368.v2 https://tandf.figshare.com/articles/dataset/Glacial_geomorphology_of_the_Altai_and_Western_Sayan_Mountains_Central_Asia/1267368/2 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_relation |
https://dx.doi.org/10.1080/17445647.2014.992177 https://dx.doi.org/10.6084/m9.figshare.1267368 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.1267368.v2 https://doi.org/10.1080/17445647.2014.992177 https://doi.org/10.6084/m9.figshare.1267368 |
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1766031829083619328 |