INFORMATION FOR BODC SERIES REF. NO. 34278
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Sea Floor Pressure Gauge Inventory Number : 6966
Start Time : 10 Aug 1980 1630 GMT Latitude : 34deg 12.8min N
End Time : 24 Nov 1980 0530 GMT Longitude : 028deg 54.6min W
Nominal Cycle Interval : 3600.0 secs Sensor Depth : 3577.00m
Sea Floor Depth : 3577.00m
Positional Uncertainty : 0.1 to 0.5 n.miles
Depth Datum : Mean sea level
Data Category : Offshore sea floor pressure series
Instrument Type : Tide gauge (unspecified)
Instrument Mounting : Sea floor - fixed
Originator Laboratory : Proudman Oceanographic Laboratory, Bidston, UK
Originator's Identifier : 8014/980/223
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Additional information stored with the data:
Station A4, North Atlantic.
Sampling was every 30 minutes, alternate pressure and temperature readings.
For the temperature correction, temperature was calculated as a mean of the
two adjacent temperatures for each pressure frequency. Clock lost 34
seconds over 135 days, 14 hours; the cycle interval and time values have
been corrected.
Instrument characteristics and calibration factors
Aanderaa Pressure Recorder TG-4A, sensor DIG, serial number 281
Original sampling interval 60 minutes
Integration period 27s
Temperature coefficient 21.68counts/degC
Pressure sensitivity 0.3086counts/mb
(at 0.964degC)
To convert pressure to elevation the following
values should be used:
Density no CTD casts
Gravitational acceleration constant 9.797m/s2
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The following additional documents apply to this series:
27731; I.O.S. Calibration and Data Processing of Off-Shore Tide Gauge Data
27823; Aanderaa Pressure Recorder Type TG-4A
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