Elevation Data Collected in 2010 from Sabine National Wildlife Refuge, Louisiana

Data release doi:10.5066/F7BR8QBH associated with this metadata record serves as an archive of elevation data collected in August 2010 from Sabine National Wildlife Refuge (SNWR), Louisiana (U.S. Geological Survey [USGS] Field Activity Number [FAN] 10SWL01). Point (xyz) elevations were collected from historically formed open-water bodies and the surrounding emergent marsh using a combination of stop-and-go (semi-kinematic) and kinematic differential Global Positioning System (DGPS) surveying techniques. These data were collected as part of the U.S. Geological Survey’s Gulf Coast Subsidence project https://coastal.er.usgs.gov/gc-subsidence/) and provide more extensive spatial coverage than water depths and marsh-surface elevations collected along coring transects in 2008 (Bernier and others, 2011). All elevation data use the projected coordinate system North American Datum of 1983 (NAD83), Universal Transverse Mercator (UTM) Zone 15 North (15N) and all elevations are North American Vertical Datum of 1988 (NAVD88) orthometric heights, derived using the GEOID09 geoid model.

本元数据记录关联的公开数据DOI为10.5066/F7BR8QBH，该数据归档了2010年8月在路易斯安那州萨拜因国家野生动物保护区（Sabine National Wildlife Refuge，SNWR）采集的高程数据，对应美国地质调查局（U.S. Geological Survey，USGS）野外活动编号（Field Activity Number，FAN）10SWL01。研究人员采用停走式（半运动学）与运动学差分全球定位系统（Differential Global Positioning System，DGPS）联合测量技术，从历史形成的敞开水域及周边挺水沼泽中采集了xyz点高程数据。这些数据作为美国地质调查局墨西哥湾沿岸沉降项目（https://coastal.er.usgs.gov/gc-subsidence/）的一部分采集完成，其空间覆盖范围相较于2008年沿岩心样带采集的水深与沼泽表面高程数据（Bernier等人，2011年）更为广泛。所有高程数据采用1983北美大地基准面（North American Datum of 1983，NAD83）通用横轴墨卡托（Universal Transverse Mercator，UTM）15北带（15N）投影坐标系，所有高程均为基于GEOID09大地水准面模型解算得到的1988北美垂直基准面（North American Vertical Datum of 1988，NAVD88）正高。