Survey Identifier: 78123007
Format Acronym: MGD77
Data Center File Number: 08010046
Parameters Surveyed Code: 55553
File Creation Date (yyyymmdd): 19801229
Source Institution: HAWAII INSTITUTE OF GEOPHYSICS
Country: U.S.A.
Platform Name: R/V KANA KEOKI
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): DONALD M. HUSSONG
Project: DOWNHOLE II SERVICING KK781230 LEG 07
Funding: O.N.R.
Survey Departure Date (yyyymmdd): 19790616
Port of Departure: SANTA CRUZ,GALAPAGOS ISL,ECUADOR
Survey Arrival Date (yyyymmdd): 19790626
Port of Arrival: ACAPULCO, MEXICO
Navigation Instrumentation: SATELLITE,OMEGA,SEXTANT,RADAR/G.CHALLENG
Geodetic Datum/Position: SATELLITE
Bathymetry Instrumentation: 3.5KHZ, 30DEG BEAM, 1SEC REP RATE
Additional Forms of Bathymetric Data: ANALOG RECORDS, MICROFILM
Magnetics Instrumentation: GEOMETRICS PROTON PRECESSION G-801 MAG
Additional Forms of Magnetics Data: ANALOG RECORDS, MICROFILM, DATA LOGGER
Gravity Instrumentation: LACOSTE-ROMBERG S-42 (OREGON STATE UNIV)
Additional Forms of Gravity Data: ANALOG RECORDS, MICROFILM, DATA LOGGER
Seismic Instrumentation: (SEE ADD. DOCU. NO. 18 + 19)
Formats of Seismic Data: ANALOG RECORDS, MICROFILM, DIGITAL
Topmost Latitude of Survey: +17
Bottommost Latitude: -01
Leftmost Longitude: -100
Rightmost Longitude: -090
General Digitizing Rate of Bathymetry: 36
General Sampling Rate of Bathymetry: 1 PER SECOND
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: NO INTERPOLATION
General Digitizing Rate of Magnetics: 010
General Sampling Rate of Magnetics: 05
Magnetic Sensor Tow Distance: 0180
Horizontal Sensor Separation: 000
Reference Field Code: 04
Reference Field: IGRF 1975
Method of Applying Residual Field: CALCULATED AT EACH POINT
General Digitizing Rate of Gravity: 050
General Sampling Rate of Gravity: 00
Theoretical Gravity Formula Code: 3
Theoretical Gravity Formula: IAGSYSTEM1967
Reference System Code: 3
Reference System: IGSN71
Corrections Applied: DRIFT WAS +0.0211 MGAL/DAY
Additional Documentation: 09 21JUN79 ONLY 7 MAXIPULSE SHOTS, 09 22JUN79 ONLY 120+80CUIN AIRGUNS, 5SEC REP RATE, 20-500HZ, 2 EELS, 15 14.7 MGAL SUBTRACTED FROM VALUE IN GEORGE P. WOOLLARD AND JOHN C. ROSE, 15 INTERNATIONAL GRAVITY MEASUREMENTS, MADISON, UNIV OF WISCONSIN, 1963, 15 DEPARTURE STILL METER READING 6298.5/TIE VALUE 978510.4, 12 DIGITIZED WITH SHIP DIGITIZER AT HIG/5 MIN INTERVALS+PEAKS+TROUGHS
Number of Data Records: 15032
Min/Max Data Record:
Date: 1979 06 16
Latitude: -0.80714
Longitude: -99.91810
Bathymetry, 2- Way Traveltime: 000110
Bathymetry, Corrected Depth: 8.0
Magnetics Total Field, 1st Sensor: 308370
Magnetics Residual Field: -12810
Free-Air Anomaly: -1219
Min/Max Data Record:
Date: 1979 06 26
Latitude: +16.84481
Longitude: -90.28627
Bathymetry, 2- Way Traveltime: 087590
Bathymetry, Corrected Depth: 6648.0
Magnetics Total Field, 1st Sensor: 414060
Magnetics Residual Field: +07670
Free-Air Anomaly: +0744