INFORMATION FOR BODC SERIES REF. NO. 34125
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Sea Floor Pressure Gauge Inventory Number : 6932
Start Time : 08 May 1980 1907 GMT Latitude : 51deg 24.4min N
End Time : 18 Jun 1980 1622 GMT Longitude : 003deg 09.7min W
Nominal Cycle Interval : 900.0 secs Sensor Depth : 4.00m
Sea Floor Depth : 4.00m
Positional Uncertainty : 0.1 to 0.5 n.miles
Depth Datum : Instantaneous
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 : 806/980/129
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Additional information stored with the data:
Station Lavernock Point, Severn Estuary.
Clock gained 20 seconds over 69 days 6.25 hours; the cycle interval and
time values have been corrected.
Instrument characteristics and calibration factors
Teleost Pressure Recorder, sensor DIG, serial number 281
Original sampling interval 15 minutes
Integration period 900s
Temperature coefficient -0.625Hz/degC
Pressure sensitivity at 9.867degC 0.1247Hz/mb
To convert pressure to elevation the following
values should be used:
Density (from CTD casts) 1022.0kg/m3
Gravitational acceleration constant 9.812m/s2
A Danforth anchor with 18m of chain was deployed connected to the recorder
box so that the rig was parallel to the ebb and flood tide. Density
calculated from measured temperature and a salinity of 29 parts per
thousand.
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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
27840; Teleost Pressure Recorder