March 2004 bin-averaged CTD profiles for the Georgia Coastal Ecosystems Intracoastal Waterway transect

Two hydrographic surveys were performed from March 13 to March 14, 2004, along the Intracoastal Waterway between the Altamaha River south of Wolf Island and Sapelo Sound (Intracoastal Waterway Transect, GCE-IC). Vertical CTD profiles were collected at various intervals from -15km to 32km along the transect during flood and ebb 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.

本数据集基于两次水文调查生成，调查时段为2004年3月13日至14日，沿沃尔夫岛以南阿尔塔马哈河至萨佩洛湾之间的沿岸内陆航道开展，该调查断面记为GCE-IC沿岸内陆航道断面（Intracoastal Waterway Transect, GCE-IC）。在涨潮与落潮工况下，沿该调查断面从-15km至32km的区段内，以不等间隔采集了垂直温盐深（CTD）剖面数据。本次测量涵盖电导率、温度、压力与光学后向散射系数，并针对每条剖面计算得到水深、盐度与西格玛-t（sigma-t）数值。上行剖面采集的数据已予以删除，剩余数据按0.5米深度分层进行平均处理，随后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。