ASTER elevation data for the SAFE Project

<b>Description: </b>These files contain processed data from the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument, providing 1 arc second (~30 metre) resolution elevation data across the research areas used in the SAFE Project.<br><br>The ASTER data used in these datasets was collected by the NASA TERRA satellite. Although it is freely downloadable, ASTER data downloaded for a project <b>should not be redistributed outside of that project</b>. Accordingly, these data should <b>only</b> be used for research carried out at the SAFE Project.<br><br> These files combine four panes of ASTER data to cover the SAFE sampling region and carry out some simple geoprocessing to produce a single output files. Details of the geoprocessing can be found here: https://www.safeproject.net/dokuwiki/safe_gis/aster. In general, SRTM data is preferable for most use cases at SAFE, (see https://zenodo.org/record/3490488) but is provided here for comparison.<b>Project: </b>This dataset was collected as part of the following SAFE research project: <b>SAFE CORE DATA</b><b>XML metadata: </b>GEMINI compliant metadata for this dataset is available here<b>Files: </b>This dataset consists of 2 files: SAFE_Aster_metadata.xlsx, ASTER_WGS84_raw.tif<b>SAFE_Aster_metadata.xlsx</b>This file only contains metadata for the files below<b>ASTER_WGS84_raw.tif</b>Description: ASTER elevation data in WGS84 geotiff<b>Date range: </b>2010-10-01 to 2019-10-01<b>Latitudinal extent: </b>4.0000 to 6.0000<b>Longitudinal extent: </b>116.0000 to 118.0000<b>数据集描述：</b>本数据集包含先进星载热发射和反射辐射计（Advanced Spaceborne Thermal Emission and Reflection Radiometer, ASTER）采集的预处理数据，可为SAFE项目的研究区域提供1角秒（约30米）分辨率的高程数据。 本数据集所用的ASTER数据由NASA TERRA卫星采集。尽管该数据可免费下载，但为某项目下载的ASTER数据<b>不得在该项目之外进行二次分发</b>。因此，本数据集<b>仅</b>可用于SAFE项目相关的研究工作。 本数据集将4幅ASTER数据拼接以覆盖SAFE项目的采样区域，并通过简单的地理处理生成单幅输出文件。地理处理的详细步骤可参阅：https://www.safeproject.net/dokuwiki/safe_gis/aster。通常而言，SAFE项目多数应用场景下更优先选用SRTM数据（详见https://zenodo.org/record/3490488），但本数据集仍提供ASTER数据以供对比参考。 <b>项目：</b>本数据集为以下SAFE研究项目的一部分：<b>SAFE CORE DATA</b> <b>XML元数据：</b>本数据集符合GEMINI标准的元数据可在此处获取 <b>文件列表：</b>本数据集包含2个文件：SAFE_Aster_metadata.xlsx、ASTER_WGS84_raw.tif <b>SAFE_Aster_metadata.xlsx</b>：该文件仅包含下方所列文件的元数据。 <b>ASTER_WGS84_raw.tif</b>：数据说明：WGS84坐标系下的ASTER高程地理TIFF数据 <b>时间范围：</b>2010年10月1日至2019年10月1日 <b>纬度范围：</b>4.0000至6.0000 <b>经度范围：</b>116.0000至118.0000