Survey Identifier: TD397
Format Acronym: MGD77
Data Center File Number: 71020005
Parameters Surveyed Code: 55113
File Creation Date (yyyymmdd): 19800605
Source Institution: UNIVERSITY CAPETOWN OCEANOGRAPHY
Country: SOUTH AFRICA
Platform Name: THOMAS B DAVIE
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): E S W SIMPSON
Project: CRUISE 397 (IPOD SITE SURVEY)
Funding: UCT
Survey Departure Date (yyyymmdd): 19791011
Port of Departure: CAPETOWN, SOUTH AFRICA
Survey Arrival Date (yyyymmdd): 19791029
Port of Arrival: CAPETOWN, SOUTH AFRICA
Navigation Instrumentation: SATELLITE
Geodetic Datum/Position: SATELLITE AND DEAD RECKONING
Bathymetry Instrumentation: ELAC PDR 12KHZ EPC RECORDER
Additional Forms of Bathymetric Data: ANALOG RECORDS
Magnetics Instrumentation: PROTON PRECESSION MAG-VARIN
Additional Forms of Magnetics Data: ANALOG RECORDS
Seismic Instrumentation: 40CU.IN.AIRGUN,STREAMER,EPC RECORDER
Formats of Seismic Data: SINGLE-CHANNEL ANALOG RECORD, NEGATIVE
Topmost Latitude of Survey: -31
Bottommost Latitude: -38
Leftmost Longitude: -001
Rightmost Longitude: +018
General Digitizing Rate of Bathymetry: 050
General Sampling Rate of Bathymetry: TWO SECOND
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: 5-MINUTE INTERVALS AND PEAKS AND TROUGHS
General Digitizing Rate of Magnetics: 050
General Sampling Rate of Magnetics: 06
Magnetic Sensor Tow Distance: 0070
Reference Field Code: 04
Reference Field: IGRF-75
Method of Applying Residual Field: LINEAR INTERPOLATION BETWEEN NAVIGATION POINTS
Number of Data Records: 2849
Min/Max Data Record:
Date: 1979 10 11
Latitude: -37.29330
Longitude: -0.88500
Bathymetry, 2- Way Traveltime: 003250
Bathymetry, Corrected Depth: 245.0
Magnetics Total Field, 1st Sensor: 271800
Magnetics Residual Field: -04400
Min/Max Data Record:
Date: 1979 10 22
Latitude: -31.61670
Longitude: +17.96330
Bathymetry, 2- Way Traveltime: 072775
Bathymetry, Corrected Depth: 5492.0
Magnetics Total Field, 1st Sensor: 284550
Magnetics Residual Field: +05090