Coastal erosion and accretion areas along the Beaufort Sea and Laptev Sea Coasts based on Landsat 1999 - 2014

The dataset covers the Laptev Sea coast from 120 to 168 E and Alaska and Canadian Beaufort Sea Coast from 130 to 168 W. Probabilities of erosion and accretion (change of land to water and visa versa) have been derived from Landsat for the time period 1999–2014. A probability threshold of 50% was applied to separate erosion and accretion areas which are provided as polygons (shape files). Further information regarding the algorithm is available in Bartsch et al. (2020).本数据集覆盖东经120°至168°的拉普捷夫海（Laptev Sea）沿岸区域，以及西经130°至168°的阿拉斯加与加拿大波弗特海（Beaufort Sea）沿岸区域。本研究基于陆地卫星（Landsat）数据，推导得到1999年至2014年期间该区域的海岸侵蚀与淤积概率（即陆地转为水域、水域转为陆地的发生概率）。研究采用50%的概率阈值划分侵蚀与淤积区域，最终以多边形（形状文件，Shapefile）形式提供上述两类区域。有关该算法的更多细节可参见Bartsch等人（2020）的相关研究。