December 2003 bin-averaged CTD profiles for the Georgia Coastal Ecosystems Altamaha River transect

Four hydrographic surveys were performed on December 2, 2003, along an east-to-west transect up the Altamaha River in Georgia (Altamaha River Transect, GCE-AL). Vertical CTD profiles were collected at 2km intervals from the -4km to 24km upriver along the transect during low and high tidal regimes. Conductivity, temperature, pressure and optical backscatter were measured, and depth, salinity and sigma-t were calculated for each profile. Data values collected on the upcast were deleted, and the remaining data were averaged within 0.5m depth bins and interpolated to produce a smooth profile for contouring. This data set was collected as part of the Georgia Coastal Ecosystems LTER quarterly hydrographic monitoring program.

2003年12月2日，针对佐治亚州阿尔塔马哈河（Altamaha River）沿东西向溯河断面开展了4次水文测量（阿尔塔马哈河断面，GCE-AL）。在低潮与高潮潮汐时段，沿该断面从上游-4千米至24千米范围内，以2千米为间隔采集垂直温盐深（CTD）剖面数据。本次测量获取了电导率、温度、压力与光学后向散射数据，并对每条剖面计算得到深度、盐度及sigma-t参数。上行剖面采集的数据均被剔除，剩余数据按0.5米深度分层取平均，并通过插值生成平滑剖面以供等值线绘制。本数据集为佐治亚州海岸生态系统长期生态研究（LTER）季度水文监测计划的组成部分。