Shorelines Extracted from 1984-2015 Landsat Imagery: Ship Island, Mississippi (Polygon: Combined Dates)

Shorelines Extracted from 1984-2015 Landsat Imagery: Ship Island, Mississippi (Polygon: Combined Dates) is a polygon shapefile representing shorelines generated from satellite imagery that was collected from 1984 to 2015. The sample frequency of satellite imagery is much higher, and the coverage much greater, than most routine high-resolution topographic surveys. Certain aspects of barrier island morphology, such as island size, shape and position, can be determined from these images and can indicate erosion, land loss, and island breakup. Studying how these characteristics evolve will help develop an understanding of how barrier islands will respond to climate change, sea level rise, and major storms in the future and that will serve to improve management of coastal resources.

1984-2015年陆地卫星（Landsat）影像提取岸线：密西西比州希普岛（合并日期多边形数据集）：本数据集为多边形shapefile格式，其岸线数据提取自1984至2015年采集的卫星影像。该数据集所用卫星影像的采样频率与覆盖范围均远超多数常规高分辨率地形测量。通过此类影像可提取障壁岛地貌的多项特征，包括岛屿面积、形态与位置等，以此反映海岸侵蚀、土地流失及岛屿裂解状况。对上述特征演化规律的研究，有助于理解障壁岛在未来如何响应气候变化、海平面上升及极端风暴事件，进而为海岸资源管理的优化提供支撑。