Survey Identifier: C0912
Format Acronym: MGD77
Data Center File Number: 01010031
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19890626
Source Institution: LAMONT-DOHERTY GEOLOGICAL OBSERVATORY
Country: USA
Platform Name: ROBERT D. CONRAD
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): M. EWING
Project: CRUISE 09, LEG 12
Survey Departure Date (yyyymmdd): 19650729
Port of Departure: NAPLES, ITALY
Survey Arrival Date (yyyymmdd): 19650823
Port of Arrival: PLYMOUTH, ENGLAND
Bathymetry Instrumentation: (SEE ADD DOC / 18)
Additional Forms of Bathymetric Data: ANALOG RECORDS
Magnetics Instrumentation: L-DGO MFG PROTON-PRECESSION
Additional Forms of Magnetics Data: ANALOG RECORDS
Gravity Instrumentation: ANSCHUTZ ELECTRICTABLE, ASKANIA GSS2-6
Additional Forms of Gravity Data: ANALOG RECORDS
Seismic Instrumentation: L-DGO 25CU-IN-AIRGUN,EEL,DRUM RECORDER
Formats of Seismic Data: TWO, 2-CHANNEL SHEET RECORDS
Topmost Latitude of Survey: +51
Bottommost Latitude: +35
Leftmost Longitude: -017
Rightmost Longitude: +015
General Digitizing Rate of Bathymetry: 060
General Sampling Rate of Bathymetry: ONE SECOND
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 00
Interpolation Scheme: NONE
General Digitizing Rate of Magnetics: 35
Reference Field Code: 03
Reference Field: IGRF-65
Method of Applying Residual Field: LINEAR INTERPOLATION BETWEEN NAV PTS
General Digitizing Rate of Gravity: 36
Theoretical Gravity Formula Code: 2
Theoretical Gravity Formula: INTERNAT'L 1930
Reference System Code: 2
Reference System: POTSDAM
Additional Documentation: 06- 3.5 AND 12 KHZ, WIDE BEAM (60 DEG), 1 SECOND SWEEP
Number of Data Records: 10216
Min/Max Data Record:
Date: 1965 07 29
Latitude: +35.50170
Longitude: -16.43500
Bathymetry, 2- Way Traveltime: 000500
Bathymetry, Corrected Depth: 38.0
Magnetics Total Field, 1st Sensor: 419640
Magnetics Residual Field: -04860
Free-Air Anomaly: -1479
Min/Max Data Record:
Date: 1965 08 23
Latitude: +50.25000
Longitude: +14.29830
Bathymetry, 2- Way Traveltime: 075925
Bathymetry, Corrected Depth: 5764.0
Magnetics Total Field, 1st Sensor: 471630
Magnetics Residual Field: +08940
Free-Air Anomaly: +3188