In this data set, the elevation changes of glacier surface at the center of glaciation is obtained by using DEM of topographic map, SRTM (2000) and DEM extracted from remote sensing images for tuomu'er peak area in Tianshan Mountains. It only aims at the glacier surface elevation change in the Tuomuer peak area of Tianshan Mountains from 1971 to 2012, so it is not supplemented and improved, and the fully open sharing is adopted. The dataset contains two bands, elevation change 1971-2000 and elevationchange 2000-2012. Field measurement unit: meter (m). The data set is mainly extracted from remote sensing images, and only represents the change of glacier surface elevation at the time of remote sensing image acquisition. The time is 1971-2000 and 2000-2012.
|collect time||1971/01/01 - 2012/12/31|
|collect place||Mount Tomur, Tianshan|
|data size||9.1 MB|
|Data spatial resolution (/ M)||30.0m|
This data set is mainly interpreted data. The main data sources are DEM of topographic map, SRTM (2000) and DEM extracted from remote sensing image.
Based on DEM of topographic map, SRTM (2000) and DEM extracted from remote sensing image, the elevation change of glacier surface at the center of glaciation was obtained by difference calculation.
After checking the accuracy of DEM in different periods, we use the cosine relationship between slope aspect and elevation difference to carry out plane and elevation correction; then we use the relationship between maximum curvature and elevation difference to reduce the error caused by different resolutions, carry out registration and relative accuracy evaluation on the two periods of DEM, and get the glacier elevation changes in different periods.
1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 1971-2012
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