Survey Identifier: C1209
Format Acronym: MGD77
Data Center File Number: 01010064
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): J. EWING
Project: CRUISE 12, LEG 9
Survey Departure Date (yyyymmdd): 19680814
Port of Departure: HONOLULU, HAWAII
Survey Arrival Date (yyyymmdd): 19680907
Port of Arrival: KODIAK, ALASKA
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 GSS2-6
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: +57
Bottommost Latitude: +21
Leftmost Longitude: -159
Rightmost Longitude: -152
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: 40
Reference Field Code: 03
Reference Field: IGRF-65
Method of Applying Residual Field: LINEAR INTERPOLATION BETWEEN TWO NAV PTS
General Digitizing Rate of Gravity: 41
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: 8172
Min/Max Data Record:
Date: 1968 08 14
Latitude: +21.22790
Longitude: -158.47210
Bathymetry, 2- Way Traveltime: 000625
Bathymetry, Corrected Depth: 47.0
Magnetics Total Field, 1st Sensor: 373540
Magnetics Residual Field: -05270
Free-Air Anomaly: -1021
Min/Max Data Record:
Date: 1968 09 07
Latitude: +56.91670
Longitude: -152.45000
Bathymetry, 2- Way Traveltime: 085300
Bathymetry, Corrected Depth: 6456.0
Magnetics Total Field, 1st Sensor: 537040
Magnetics Residual Field: +06200
Free-Air Anomaly: +2329