INFORMATION FOR BODC SERIES REF. NO. 33700
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Sea Floor Pressure Gauge Inventory Number : 6943
Start Time : 03 Jun 1973 0000 GMT Latitude : 51deg 02.9min N
End Time : 05 Jul 1973 2300 GMT Longitude : 006deg 56.6min W
Nominal Cycle Interval : 3600.0 secs Sensor Depth : 95.00m
Sea Floor Depth : 95.00m
Positional Uncertainty : 0.1 to 0.5 n.miles
Depth Datum : Chart reference
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 : 731/973/154
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Additional information stored with the data:
Station C, Celtic Sea.
Clock gained 25 seconds over 34 days, 18.5 hours; the cycle interval and
time values have been corrected. An interpolation program was used to
produce hourly values, on the hour, of 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 37.01Hz/degC
Pressure sensitivity at 8.4degC 0.977Hz/cm
To convert pressure to elevation the following
values should be used:
Density (from CTD casts) 1026.86kg/m3
Gravitational acceleration constant 9.812m/s2
Complete record of sphere temperature but sea temperature circuit failed on
deployment. Temperature record was taken from bottom mounted current meter
and used for correction of frequency record.
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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