Geodetic glacier mass balance (1975–1999) in the central Pamir using the SRTM DEM and KH-9 imagery
Multiple studies on regional glacier mass balance in the Pamir Mountains have been conducted using the geodetic method, but they were rarely extended to the period before 2000. In this study, we used KH-9 imagery acquired in 1975 to generate the historical DEM for the central Pamir, and then obtaine...
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Cambridge University Press
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ftdoajarticles:oai:doaj.org/article:336d09fe0bc94a039da6a3387cf77cfc 2023-05-15T16:57:35+02:00 Geodetic glacier mass balance (1975–1999) in the central Pamir using the SRTM DEM and KH-9 imagery YUSHAN ZHOU ZHIWEI LI JIA LI RONG ZHAO XIAOLI DING 2019-04-01T00:00:00Z https://doi.org/10.1017/jog.2019.8 https://doaj.org/article/336d09fe0bc94a039da6a3387cf77cfc EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S002214301900008X/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2019.8 0022-1430 1727-5652 https://doaj.org/article/336d09fe0bc94a039da6a3387cf77cfc Journal of Glaciology, Vol 65, Pp 309-320 (2019) glacier mass balance remote sensing surface mass budget Environmental sciences GE1-350 Meteorology. Climatology QC851-999 article 2019 ftdoajarticles https://doi.org/10.1017/jog.2019.8 2023-03-12T01:30:59Z Multiple studies on regional glacier mass balance in the Pamir Mountains have been conducted using the geodetic method, but they were rarely extended to the period before 2000. In this study, we used KH-9 imagery acquired in 1975 to generate the historical DEM for the central Pamir, and then obtained the glacier elevation change by comparing this with the SRTM C-band DEM. The penetration depth of the C-band radar was corrected for different glacier surfaces, i.e. 2.96, 1.68 and 0 m for firn/snow cover, bare ice and debris-covered areas, respectively. The final results suggest that the central Pamir glaciers, overall, experienced a near-zero mass balance of −0.03 ± 0.24 m w.e. a−1 for 1975–99. Due to glacier surge activity, the elevation change patterns of individual glaciers were highly variable, and their mass balances varied from −0.12 ± 0.26 to 0.63 ± 0.20 m w.e. a−1. The mean mass budgets of the surge-type glaciers and non-surge-type glaciers were 0.03 ± 0.14 and −0.05 ± 0.28 m w.e. a−1, respectively. Concurring with previous studies, we conclude that the central Pamir glaciers may have been in a state of approximately balanced mass budget or slight mass deficit from the mid-1970s to the mid-2010s. Article in Journal/Newspaper Journal of Glaciology Directory of Open Access Journals: DOAJ Articles Geodetic Glacier ENVELOPE(163.800,163.800,-77.750,-77.750) Journal of Glaciology 65 250 309 320 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
glacier mass balance remote sensing surface mass budget Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
spellingShingle |
glacier mass balance remote sensing surface mass budget Environmental sciences GE1-350 Meteorology. Climatology QC851-999 YUSHAN ZHOU ZHIWEI LI JIA LI RONG ZHAO XIAOLI DING Geodetic glacier mass balance (1975–1999) in the central Pamir using the SRTM DEM and KH-9 imagery |
topic_facet |
glacier mass balance remote sensing surface mass budget Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
description |
Multiple studies on regional glacier mass balance in the Pamir Mountains have been conducted using the geodetic method, but they were rarely extended to the period before 2000. In this study, we used KH-9 imagery acquired in 1975 to generate the historical DEM for the central Pamir, and then obtained the glacier elevation change by comparing this with the SRTM C-band DEM. The penetration depth of the C-band radar was corrected for different glacier surfaces, i.e. 2.96, 1.68 and 0 m for firn/snow cover, bare ice and debris-covered areas, respectively. The final results suggest that the central Pamir glaciers, overall, experienced a near-zero mass balance of −0.03 ± 0.24 m w.e. a−1 for 1975–99. Due to glacier surge activity, the elevation change patterns of individual glaciers were highly variable, and their mass balances varied from −0.12 ± 0.26 to 0.63 ± 0.20 m w.e. a−1. The mean mass budgets of the surge-type glaciers and non-surge-type glaciers were 0.03 ± 0.14 and −0.05 ± 0.28 m w.e. a−1, respectively. Concurring with previous studies, we conclude that the central Pamir glaciers may have been in a state of approximately balanced mass budget or slight mass deficit from the mid-1970s to the mid-2010s. |
format |
Article in Journal/Newspaper |
author |
YUSHAN ZHOU ZHIWEI LI JIA LI RONG ZHAO XIAOLI DING |
author_facet |
YUSHAN ZHOU ZHIWEI LI JIA LI RONG ZHAO XIAOLI DING |
author_sort |
YUSHAN ZHOU |
title |
Geodetic glacier mass balance (1975–1999) in the central Pamir using the SRTM DEM and KH-9 imagery |
title_short |
Geodetic glacier mass balance (1975–1999) in the central Pamir using the SRTM DEM and KH-9 imagery |
title_full |
Geodetic glacier mass balance (1975–1999) in the central Pamir using the SRTM DEM and KH-9 imagery |
title_fullStr |
Geodetic glacier mass balance (1975–1999) in the central Pamir using the SRTM DEM and KH-9 imagery |
title_full_unstemmed |
Geodetic glacier mass balance (1975–1999) in the central Pamir using the SRTM DEM and KH-9 imagery |
title_sort |
geodetic glacier mass balance (1975–1999) in the central pamir using the srtm dem and kh-9 imagery |
publisher |
Cambridge University Press |
publishDate |
2019 |
url |
https://doi.org/10.1017/jog.2019.8 https://doaj.org/article/336d09fe0bc94a039da6a3387cf77cfc |
long_lat |
ENVELOPE(163.800,163.800,-77.750,-77.750) |
geographic |
Geodetic Glacier |
geographic_facet |
Geodetic Glacier |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology, Vol 65, Pp 309-320 (2019) |
op_relation |
https://www.cambridge.org/core/product/identifier/S002214301900008X/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2019.8 0022-1430 1727-5652 https://doaj.org/article/336d09fe0bc94a039da6a3387cf77cfc |
op_doi |
https://doi.org/10.1017/jog.2019.8 |
container_title |
Journal of Glaciology |
container_volume |
65 |
container_issue |
250 |
container_start_page |
309 |
op_container_end_page |
320 |
_version_ |
1766049150407802880 |