INFORMATION FOR BODC SERIES REF. NO. 33736
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Sea Floor Pressure Gauge Inventory Number : 6946
Start Time : 08 Sep 1973 0000 GMT Latitude : 54deg 19.5min N
End Time : 18 Oct 1973 2300 GMT Longitude : 001deg 14.5min E
Nominal Cycle Interval : 3600.0 secs Sensor Depth : 23.00m
Sea Floor Depth : 23.00m
Positional Uncertainty : 0.1 to 0.5 n.miles
Depth Datum : Chart reference
Project : JONSDAP 1973
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 : 734/973/251
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Additional information stored with the data:
Station Z0, Southern North Sea.
Clock gained 50 seconds over 48 days, 21.5 hours; the cycle interval and
time values have been corrected. An interpolation program was used to
produce hourly values, on the hour, for the pressure record.
Instrument characteristics and calibration factors
OSTG Type 1, logger 41, sensor FM 4882/7
Original sampling interval 15 minutes
Integration period 890s
Temperature coefficient 45.7cm/degC
Pressure sensitivity at 11.2degC 0.836Hz/cm
To convert pressure to elevation the following
values should be used:
Density (from CTD casts)
1024.72 + 0.000286 * (total pressure - atmospheric pressure) kg/m3
Gravitational acceleration constant 9.814m/s2
Thermistor channels failed after 3 days 15.75 hours; temperature
data from nearby current meter used.
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The following additional documents apply to this series:
27728; Off-Shore Tide Gauge Type I
27731; I.O.S. Calibration and Data Processing of Off-Shore Tide Gauge Data
Project Document : 26423
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