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

Three hydrographic surveys were performed on June 19, 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 various 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6月19日，在佐治亚州阿尔塔马哈河上游沿自东向西的断面开展了3次水文调查（阿尔塔马哈河断面，GCE-AL）。在不同潮汐工况下，沿该断面从上游-4km至24km的范围内，以2km为间隔采集垂直温盐深（CTD）剖面数据。本次调查测量了电导率、温度、压力与光学后向散射强度，并针对每条剖面计算得到水深、盐度与密度距平（sigma-t）。删除上行剖面采集的数据后，对剩余数据按0.5m深度分层进行平均，并通过插值生成平滑剖面以用于等值线绘制。本数据集为佐治亚海岸生态系统长期生态研究（Long-Term Ecological Research, LTER）季度水文监测计划的组成部分。