Survey Identifier: C1407
Format Acronym: MGD77
Data Center File Number: 01010096
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19890706
Source Institution: LAMONT-DOHERTY GEOLOGICAL OBSERVATORY
Country: USA
Platform Name: ROBERT D. CONRAD
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): R. EMBLEY
Project: CRUISE 14,LEG 7
Survey Departure Date (yyyymmdd): 19710820
Port of Departure: ADAK, ALASKA
Survey Arrival Date (yyyymmdd): 19710921
Port of Arrival: VICTORIA, BRITISH COLUMBIA
Navigation Instrumentation: SATELLITE
Geodetic Datum/Position: SATELLITE/ DEAD RECKONING
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 GSS2-31
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: +60
Bottommost Latitude: +48
Leftmost Longitude: -177
Rightmost Longitude: -123
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: 45
Reference Field Code: 03
Reference Field: IGRF-65
Method of Applying Residual Field: LINEAR INTERPOLATION BETWEEN TWO NAV PTS
General Digitizing Rate of Gravity: 45
Theoretical Gravity Formula Code: 2
Theoretical Gravity Formula: INTERNAT'L 1930
Reference System Code: 2
Reference System: POTSDAM SYSTEM
Additional Documentation: 06 -3.5 AND 12 KHZ, WIDE BEAM (60 DEG), 1 SECOND SWEEP
Number of Data Records: 10093
Min/Max Data Record:
Date: 1971 08 20
Latitude: +48.24780
Longitude: -176.50000
Bathymetry, 2- Way Traveltime: 000225
Bathymetry, Corrected Depth: 17.0
Magnetics Total Field, 1st Sensor: 482730
Magnetics Residual Field: -08710
Free-Air Anomaly: -1507
Min/Max Data Record:
Date: 1971 09 21
Latitude: +59.95800
Longitude: -123.44500
Bathymetry, 2- Way Traveltime: 092150
Bathymetry, Corrected Depth: 6986.0
Magnetics Total Field, 1st Sensor: 572100
Magnetics Residual Field: +14310
Free-Air Anomaly: +1897