Monsoon triggered landslides in Nepal timed with Sentinel-1 for 2015, 2017, 2018 and 2019

This is a dataset of landslides during the 2015, 2017, 2018 and 2019 monsoons, intended as a supplement to a paper currently in review. The dataset includes .shp files of landslide polygons and .csv files of landslide characteristics including timings constrained by Sentinel-1 time series. Landslide polygons were mapped by comparing pre- and post-monsoon Landsat-8 images. Landslide timings were constrained by Sentinel-1 time series using the methods described in Burrows et al. (2022) <em>NHESS. </em>Other landslide characteristics (e.g. scar area) were derived based on formulae presented in Marc et al. (2018) <em>ESURF</em> or derived from the SRTM-30m DEM in QGIS. Landslide polygons corresponding to the timed landslide .csv files for 2019 are included here and were mapped as part of this study. In 2015, 2017 and 2018, the .csv files labelled "west-extension" correspond to shapefiles of polygons included here and mapped as part of this study. For the main 2015, 2017 and 2018 datasets, we only present the Sentinel-1 timing results. Landslide polygons were mapped as part of the study by Jones et al. (2021) <em>Nature Communications. </em>The authors of that study made their landslide polygons available as shapefile format on the National Geoscience Data Centre (ID: 166966) and we direct people towards that data at the following link: <em>https://webapps.bgs.ac.uk/services/ngdc/accession/index.html?simpleText=landslide%20nepal </em>本数据集收录了2015、2017、2018及2019年季风季期间的滑坡数据，旨在为当前处于同行评审阶段的一篇学术论文提供数据补充。数据集包含滑坡多边形的.shp格式文件，以及滑坡特征的.csv格式文件，其中滑坡发生时序由Sentinel-1时间序列约束得到。滑坡多边形通过对比季风季前后的Landsat-8遥感影像进行解译勾绘；滑坡时序的约束方法采用Burrows等人2022年发表于<em>《NHESS》</em>的研究成果。其他滑坡特征（如滑坡裸露面积）则基于Marc等人2018年发表于<em>《ESURF》</em>的公式推导得出，或通过QGIS软件处理SRTM-30m数字高程模型（DEM）得到。 本数据集已包含2019年对应带时序标注的.csv文件的滑坡多边形数据，且该部分数据为本研究完成的解译成果。针对2015、2017及2018年数据集，标注为"west-extension"的.csv文件对应的滑坡多边形shapefile已包含在本数据集中，同样为本研究的解译成果。而2015、2017及2018年的主数据集仅提供了基于Sentinel-1时间序列得到的滑坡时序分析结果。 上述三年的主滑坡多边形数据源自Jones等人2021年发表于<em>《Nature Communications》</em>的研究成果，该团队已将其滑坡多边形数据以shapefile格式上传至英国国家地球科学数据中心（National Geoscience Data Centre，存档编号：166966），相关数据可通过以下链接获取：<em>https://webapps.bgs.ac.uk/services/ngdc/accession/index.html?simpleText=landslide%20nepal </em>