Beach profile data for the Elwha River Delta, 2019-07-03

Shoreline topography data were collected using GNSS survey methods, with a differential GPS, typically an AshTech ProMark 200 RTK-DGPS system connected to the Washington State...

岸线地形数据采用全球导航卫星系统（GNSS）测量方法采集，搭载差分GPS（Differential GPS）设备，典型配置为连接至华盛顿州的阿什泰克ProMark 200型实时动态差分GPS（RTK-DGPS）系统。