Wax Lake Delta DEMs 2009 and 2013
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This is the digital elevation model (DEM) of Wax Lake Delta (WLD), LA, from 2009 and 2013. The original point clouds can be found at http://opentopo.sdsc.edu/dataSearch?search=Wax Lake Delta<br>The 2009 survey was conducted on January 01, 2009.The 2013 survey was conducted on February 13-14, 2013.<br>Using only the data on the islands of WLD, I removed trees and low vegetation, registered the two datasets, and differenced them using CloudCompare. After differencing, the data were gridded. Here, I store the elevations from 2009 (z09_islands) and 2013 (z13_islands) surveys of the delta's islands, along with the differences in elevations (dz_islands) between the 2009 elevations and the 2013 registered elevation (z13_reg_islands) and a spatially variable estimate of the error for the differencing procedure (err_islands).<br>For details on the data processing, see the ReadMe or Wagner et al. (2017) Elevation Change and Stability on a Prograding Delta. Geophysical Research Letters. For details of the error calculations, see the supplementary information for that same paper.
本数据集为美国路易斯安那州沃克斯莱克三角洲(Wax Lake Delta, 简称WLD)2009年与2013年的数字高程模型(Digital Elevation Model, DEM)。原始点云数据可于以下网址获取:http://opentopo.sdsc.edu/dataSearch?search=Wax Lake Delta。
2009年的野外测量工作于2009年1月1日开展,2013年的测量工作则于2013年2月13日至14日完成。
本次研究仅采用沃克斯莱克三角洲岛屿区域的数据集:首先清除了区域内的树木与低矮植被,随后对两套数据进行配准,并借助CloudCompare软件完成差分计算。差分计算完成后,对数据进行了网格化处理。
本数据集存储了该三角洲岛屿区域2009年(z09_islands)与2013年(z13_islands)的实测高程数据,同时包含2009年高程与2013年配准后高程(z13_reg_islands)之间的高程差值(dz_islands),以及差分流程的空间变异性误差估计值(err_islands)。
若需了解数据处理的详细流程,请参阅配套ReadMe文档,或参考瓦格纳等人2017年发表于《地球物理研究通讯(Geophysical Research Letters)》的论文《进积三角洲的高程变化与稳定性(Elevation Change and Stability on a Prograding Delta)》。误差计算的详细细节可参阅该论文的补充材料。
提供机构:
figshare
创建时间:
2019-09-24



