TY  - Data
T1  - Rapid glacier Shrinkage and Glacial Lake Expansion of a China-Nepal Transboundary Catchment in the Central Himalayas dataset（1964-2020）
A1  - Zhong Yan
A1  - Liu Qiao
DO  - 10.5281/zenodo.5496959
PY  - 2024
DA  - 2024-01-26
PB  - National Cryosphere Desert Data Center
AB  - In this dataset, 42 medium and high resolution remote sensing images from 1964 to 2020 were used to complete a comprehensive survey of glaciers and ice lakes in the entire Tama sub basin in the middle of the the Himalayas and collate them into a dataset. The glaciers in 1964, 1980, 1990, 2000, 2010, 2018 and 2020 and the ice lakes in 1964 and 1980 were demarcated manually, and the ice lakes in 1987-2020 were demarcated automatically in the data format of. shp. Among them, maps of 271 glaciers and 196 glacial lakes in the entire basin in 2020 were drawn, covering an area of 329.2 ± 1.9 square kilometers and 14.4 ± 0.3 square kilometers, respectively. According to statistics, in the past 56 years, the total area of glaciers in the basin has decreased by 26.2 ± 3.2 square kilometers (0.13% a-1), with an average thinning of about 20 meters. The average speed has gradually slowed down from 5.3 meters a-1from 1999 to 2003 to 4.0 meters a-1from 2013 to 2015. The total area of glacial lakes has increased by 9.2 ± 0.4 square kilometers (about 180%), with the expansion rate of pre glacial lakes in contact with ice (about 204%) being much higher than other lakes.
DB  - NCDC
UR  - http://www.ncdc.ac.cn/portal/metadata/1177edba-0793-471b-bebd-95f6720f7536
ER  -