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Parameter: Depth

Dataset: 
Neuse River Estuary WQ
Parameter: 
depth
Master parameters information
Short Name:
 depth
Short Description:
 depth
Official Name:
 depth
No Data Value:
 nd
Description:
 

Observation/sample depth below the sea surface. Units often reported as: meters, feet.

When used in a JGOFS/GLOBEC dataset the depth is a best estimate; usually but not always calculated from pressure; calculated either from CTD pressure using Fofonoff and Millard (1982; UNESCO Tech Paper #44) algorithm adjusted for 1980 equation of state for seawater (EOS80) or simply equivalent to nominal depth as recorded during sampling if CTD pressure was unavailable.

Dataset-parameters information
Supplied Name: 
Depth
Supplied Units: 
meters (m)
Conversion Necessary: 
no
Conversion Utility: 
No Data Value: 
nd
Description: 
Depth level from which the water sample was collected and where the in situ measurements were made (S=surface ; B=bottom Surface (S) refers to a surface water sample or in situ measurement taken at a depth of approximately 0.2 meters. Bottom (B) refers to a bottom water sample or in situ measurement taken at a depth of approximately 0.5 meters above the sediment layer. Surface water samples were collected by submerging 10 liter high-density polyethylene containers just below the water surface or by filling the containers with surface water collected from bucket casts. Bottom water samples were collected with a horizontal plastic Van Dorn sampler. Starting December 2007 ; all samples collected with diaphragm pump and a weighted ; marked hose. All containers were kept in dark coolers at ambient temperature during transport to the laboratory. All filtration was done within a few hours of collection and when conditions permitted ; on board the research vessel.