摘要 : Beginning from the late sixties, American scientists, such as J. C. Barnes et al., have successfully studied snow hydrology and snow mapping from meteorological satellite images, SKYLAB EREP Data and landsat (formerly ERTS). Sovie... 展开 Beginning from the late sixties, American scientists, such as J. C. Barnes et al., have successfully studied snow hydrology and snow mapping from meteorological satellite images, SKYLAB EREP Data and landsat (formerly ERTS). Soviet scientists have also investigated the problem of forecasting spring flood in the Volga River region and in central Asia from satellite data. 收起