Survey Identifier: TD267
Format Acronym: MGD77
Data Center File Number: 71020001
Parameters Surveyed Code: 55113
File Creation Date (yyyymmdd): 19800605
Source Institution: UNIVERSITY CAPETOWN GEOLOGY
Country: SOUTH AFRICA
Platform Name: THOMAS B DAVIE
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): E S W SIMPSON
Project: CRUISE 267
Funding: SANCOR
Survey Departure Date (yyyymmdd): 19711018
Port of Departure: DURBAN SOUTH AFRICA
Survey Arrival Date (yyyymmdd): 19711103
Port of Arrival: DURBAN SOUTH AFRICA
Navigation Instrumentation: SEXTANT
Geodetic Datum/Position: DEAD RECKONING
Bathymetry Instrumentation: ELAC PDR 12KH2
Additional Forms of Bathymetric Data: ANALOG RECORDS
Magnetics Instrumentation: PROTON PRECESSION MAG-VARIAN
Additional Forms of Magnetics Data: ANALOG RECORDS
Seismic Instrumentation: 10000J SPARKER 25-300HZ SINGLE CHANNEL
Formats of Seismic Data: ANALOG RECORD,NEGATIVES
Topmost Latitude of Survey: -13
Bottommost Latitude: -31
Leftmost Longitude: +031
Rightmost Longitude: +046
General Digitizing Rate of Bathymetry: 050
General Sampling Rate of Bathymetry: VARIABLE
Assumed Sound Velocity: 1500
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: 03
Reference Field: IGRF-65
Method of Applying Residual Field: LINEAR INTERPOLATION BETWEEN NAVIGATION POINTS
Number of Data Records: 4514
Min/Max Data Record:
Date: 1971 10 18
Latitude: -30.02170
Longitude: +31.26500
Bathymetry, 2- Way Traveltime: 000450
Bathymetry, Corrected Depth: 34.0
Magnetics Total Field, 1st Sensor: 301440
Magnetics Residual Field: -07830
Min/Max Data Record:
Date: 1971 11 03
Latitude: -13.11000
Longitude: +45.16330
Bathymetry, 2- Way Traveltime: 067200
Bathymetry, Corrected Depth: 5072.0
Magnetics Total Field, 1st Sensor: 343170
Magnetics Residual Field: +02700