Survey Identifier: C1219
Format Acronym: MGD77
Data Center File Number: 01010074
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): S. LIEBER
Project: CRUISE 12, LEG 19
Survey Departure Date (yyyymmdd): 19690712
Port of Departure: HAKODATE, JAPAN
Survey Arrival Date (yyyymmdd): 19690806
Port of Arrival: ADAK, 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: +52
Bottommost Latitude: +24
Leftmost Longitude: +140
Rightmost Longitude: -177
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: 36
Reference Field Code: 03
Reference Field: IGRF-65
Method of Applying Residual Field: LINEAR INTERPOLATION BETWEEN TWO 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 SYSTEM
Additional Documentation: 06 -3.5 AND 12 KHZ, WIDE BEAM (60 DEG), 1 SECOND SWEEP
Number of Data Records: 10217
Min/Max Data Record:
Date: 1969 07 12
Latitude: +24.31740
Longitude: -179.99820
Bathymetry, 2- Way Traveltime: 000975
Bathymetry, Corrected Depth: 73.0
Magnetics Total Field, 1st Sensor: 365850
Magnetics Residual Field: -07210
Free-Air Anomaly: -2001
Min/Max Data Record:
Date: 1969 08 06
Latitude: +51.59000
Longitude: +179.99930
Bathymetry, 2- Way Traveltime: 096500
Bathymetry, Corrected Depth: 7329.0
Magnetics Total Field, 1st Sensor: 490090
Magnetics Residual Field: +07800
Free-Air Anomaly: +1437