DEM topographic data is the data we often use in various research and designs! We have previously shared 500-meter resolution DEM terrain data from GEBCO organizations worldwide (you can view previous articles). The advantage of this data is that the data is very small and will n

2025/09/1522:36:36 science 1757
DEMTopographic data is the data we often use in various research and designs! We have shared 500-meter resolution DEM terrain data from GEBCO's global range (you can view the previous article) . The advantage of this data is that the data is very small and will not be stuck when analyzing large areas. The disadvantage is that the data is low in accuracy and is difficult to use in analysis of small areas. We have also shared to DEM terrain data with 12.5 meters resolution in various provinces of NASA's Earth Science Data website (you can view the previous article ). The advantage of this data is its high accuracy, and its disadvantage is that its data is large and it is difficult to use nationwide data.

This time we bring you DEM terrain data with a resolution of 30 meters - STRM elevation data! This data was measured jointly by the U.S. Space Administration (NASA) and the National Surveying and Mapping Agency of the Department of Defense (NIMA). The data is very large due to its high accuracy, and most users should not be able to open the data nationwide. Therefore, we process this data for data in provinces and cities across the country, so it is convenient for everyone to use!

You can reply to the keywords on the official account 1206 Free to obtain 30-meter-precision DEM terrain data of any province in the country, including data across the province and data across every city in the province! You can get data directly without forwarding the article! Note that because the data is large, national data is not provided! The following is a detailed introduction to the data:


01 data preview

For each province, we will provide three major files:
  • 1. Terrain across the province (the range is greater than the province boundary)
  • 2. Terrain across the province (the scope is consistent with the province boundary)
  • 3. Terrain across the province
  • 3. Terrain across the province

1. The province-wide terrain (the range is greater than the province boundary)

Let’s take Hubei Province as an example to preview . splicing the grids involving the scope of Hubei administrative divisions to get a larger range of terrain than the administrative boundary of Hubei Province. The reason for providing this range is that some friends may want to use their administrative boundaries to cut data. In this case, they can only be cut based on a larger range of terrain!

DEM topographic data is the data we often use in various research and designs! We have previously shared 500-meter resolution DEM terrain data from GEBCO organizations worldwide (you can view previous articles). The advantage of this data is that the data is very small and will n - DayDayNews


2. The province-wide terrain (the scope is consistent with the province's boundary)

Let's take Hubei Province as an example to preview . Based on the above grid, we use the administrative division data obtained from the Shuduchengshi official account to cut the terrain according to the boundary of Hubei Province, forming a terrain that is consistent with the boundary range of Hubei Province!

DEM topographic data is the data we often use in various research and designs! We have previously shared 500-meter resolution DEM terrain data from GEBCO organizations worldwide (you can view previous articles). The advantage of this data is that the data is very small and will n - DayDayNews


3.Topographic of cities in the province

Let’s take Hubei Province as an example. In addition to providing the province-wide terrain, we also provide the terrain of each city in 13 prefecture-level cities in Hubei Province. Let’s take Wuhan as an example:

DEM topographic data is the data we often use in various research and designs! We have previously shared 500-meter resolution DEM terrain data from GEBCO organizations worldwide (you can view previous articles). The advantage of this data is that the data is very small and will n - DayDayNews



02 data details

datum : D_WGS_1984
data format : .tif format

spatial resolution : 30m

official download link : http://srtm.csi.cgiar.org/srtmdata/

For the introduction and download methods of this data and various other DEM data with various precisions, you can view the articles we pushed before!

03 Data Get

DEM topographic data is the data we often use in various research and designs! We have previously shared 500-meter resolution DEM terrain data from GEBCO organizations worldwide (you can view previous articles). The advantage of this data is that the data is very small and will n - DayDayNews

DEM topographic data is the data we often use in various research and designs! We have previously shared 500-meter resolution DEM terrain data from GEBCO organizations worldwide (you can view previous articles). The advantage of this data is that the data is very small and will n - DayDayNews


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