March 2004 CTD, PAR, oxygen and chlorophyll 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, optical back scatter, photosynthetically-available radiation, oxygen and chlorophyll a fluorescence were measured, and depth, salinity and sigma-t were calculated for each profile. Data values collected during the upcast were deleted. This data set was collected as part of the Georgia Coastal Ecosystems LTER quarterly hydrographic monitoring program.2004年3月13日至14日，研究团队在沃尔夫岛以南的阿尔塔马哈河（Altamaha River）与萨佩洛湾（Sapelo Sound）之间的沿岸水道（Intracoastal Waterway）完成两次水文调查，对应调查断面为沿岸水道断面（Intracoastal Waterway Transect, GCE-IC）。本次调查在该断面沿程-15km至32km范围内，于涨潮、落潮时段以不等间隔采集了垂直温盐深仪（CTD, Conductivity-Temperature-Depth）剖面数据。测量参数涵盖电导率、温度、压力、光学后向散射系数、光合有效辐射、溶解氧及叶绿素a荧光，并针对每条剖面计算得到水深、盐度与密度距平（sigma-t）。上行剖面采集的所有数据值均已剔除。本数据集为佐治亚沿岸生态系统（Georgia Coastal Ecosystems, GCE）长期生态研究（Long Term Ecological Research, LTER）季度水文监测计划的组成部分。