当前时间： 2026-03-20 14:46:06
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EARTHDATA下载30米DEM数据1.首先在google里面打开网址earthdata.nasa.gov2.点击FINDDATA，弹出下面的界面（注意需要登录才能下载）5.在instruments里面选择ASTER，弹出下面的界面7.弹出下面的界面，点击下载按钮可以看到所选地区的dem文件和num文件8.点击数据后面的下载按钮即可下载。这里只是下载了一个块，需要再下载的话用同样的方法选择不同的地方即可
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