覆盖近乎全球的30 m ASTER DEM已经对公众开放,为研究全球尺度问题提供了较好的数据基础,但其数据精度和质量在我国区域内存在较多不确定性。研究了利用全国1∶50000高程数据对ASTER DEM数据异常进行修补的技术路线,从而为实现利用多源...覆盖近乎全球的30 m ASTER DEM已经对公众开放,为研究全球尺度问题提供了较好的数据基础,但其数据精度和质量在我国区域内存在较多不确定性。研究了利用全国1∶50000高程数据对ASTER DEM数据异常进行修补的技术路线,从而为实现利用多源DEM数据更新现有数据提供质量与可靠性保证,也为我国构建全球基础DEM数据库提供了一种有效的参考。展开更多
Singhbhum Shear Zone (SSZ) is a geologically rich belt with structures like faults and folds being the distinctive features. Due to these characteristics this area has been an important centre of studies since past fe...Singhbhum Shear Zone (SSZ) is a geologically rich belt with structures like faults and folds being the distinctive features. Due to these characteristics this area has been an important centre of studies since past few decades. With the advent of Remote Sensing and GIS, it has been possible to study and interprete geological setting of any area in the laboratory itself without even visiting the field again and again. The present study aims to investigate the geology of the SSZ from ASTER DEM by observing the elevation, as-pect, texture, pattern etc of shaded relief images. This can prove to be an excellent supplementary information database for interpretations along with other data.展开更多
介绍了ASTER Global DEM数据和Google Earth影像特点,以及阐述通过定制与检查DEM数据、卫星影像下载与纠正、数据基准转换与投影变换、等高线生成与影像叠加四个环节来制作遥感影像地图的方法。结合工程实践经验,说明该方法适合于难以...介绍了ASTER Global DEM数据和Google Earth影像特点,以及阐述通过定制与检查DEM数据、卫星影像下载与纠正、数据基准转换与投影变换、等高线生成与影像叠加四个环节来制作遥感影像地图的方法。结合工程实践经验,说明该方法适合于难以获取基础地理信息的区域,能辅助电力工程的选址选线。展开更多
文摘覆盖近乎全球的30 m ASTER DEM已经对公众开放,为研究全球尺度问题提供了较好的数据基础,但其数据精度和质量在我国区域内存在较多不确定性。研究了利用全国1∶50000高程数据对ASTER DEM数据异常进行修补的技术路线,从而为实现利用多源DEM数据更新现有数据提供质量与可靠性保证,也为我国构建全球基础DEM数据库提供了一种有效的参考。
文摘Singhbhum Shear Zone (SSZ) is a geologically rich belt with structures like faults and folds being the distinctive features. Due to these characteristics this area has been an important centre of studies since past few decades. With the advent of Remote Sensing and GIS, it has been possible to study and interprete geological setting of any area in the laboratory itself without even visiting the field again and again. The present study aims to investigate the geology of the SSZ from ASTER DEM by observing the elevation, as-pect, texture, pattern etc of shaded relief images. This can prove to be an excellent supplementary information database for interpretations along with other data.
文摘介绍了ASTER Global DEM数据和Google Earth影像特点,以及阐述通过定制与检查DEM数据、卫星影像下载与纠正、数据基准转换与投影变换、等高线生成与影像叠加四个环节来制作遥感影像地图的方法。结合工程实践经验,说明该方法适合于难以获取基础地理信息的区域,能辅助电力工程的选址选线。
