Survey Identifier: 77031706
Format Acronym: MGD77
Data Center File Number: 08010070
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19830128
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): F. K. DUENNEBIER
Project: HAWAIIAN RIDGE STUDY KK77-03-17-06
Funding: NSF(HRS)
Survey Departure Date (yyyymmdd): 19770710
Port of Departure: MIDWAY, U.S.A.
Survey Arrival Date (yyyymmdd): 19770721
Port of Arrival: HONOLULU, HAWAII
Navigation Instrumentation: SATELLITE
Geodetic Datum/Position: PRIM-SATELLITE
Bathymetry Instrumentation: 3.5 KHZ 30 DEG BEAM
Additional Forms of Bathymetric Data: ANALOG, MICROFILM
Magnetics Instrumentation: GEOMETRICS G 801-3
Additional Forms of Magnetics Data: ANALOG, MICROFILM
Gravity Instrumentation: LACOSTE ROMBERG S-33
Additional Forms of Gravity Data: ANALOG, MICROFLM
Seismic Instrumentation: (SEE ADD.DOC. 18)
Formats of Seismic Data: ANALOG, MICROFILM
Topmost Latitude of Survey: +29
Bottommost Latitude: +17
Leftmost Longitude: -178
Rightmost Longitude: -152
General Digitizing Rate of Bathymetry: 22
General Sampling Rate of Bathymetry: 1/SECOND
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: NONE.(PICKED PEAKS/TROUGHS OR 15-MIN INTERVLS IF SMOOTH)
General Digitizing Rate of Magnetics: 010
General Sampling Rate of Magnetics: 06
Horizontal Sensor Separation: 000
Reference Field Code: 04
Reference Field: IGRF-75
Method of Applying Residual Field: FOR EACH DATA VALUE
General Digitizing Rate of Gravity: 030
General Sampling Rate of Gravity: 60
Theoretical Gravity Formula Code: 2
Theoretical Gravity Formula: INTERNATIONAL1930
Reference System Code: 2
Reference System: POTSDAM
Corrections Applied: NONE APPLIED
Departure Base Station Gravity: 9789392
Departure Base Station Description: HONOLULU, HAWAII PIER 45
Arrival Base Station Gravity: 9789392
Arrival Base Station Description: HONOLULU, HAWAII PIER 45
Additional Documentation: 09 120 AND 714 CU IN AIRGUN, 4500J SPKR, OBS, B,M,G, REFLX (HIGH 30-500, 09 LOW 40-80, MIX 40-80/120-240, VLOW 20-40), OBS 34-44, ASPER 49-56, 09 FFTG, FFC. 15 GRAVITY BASE STATIONS IN GEORGE P. WOOLLARD AND JOHN C. ROSE, 15 INTERNATIONAL GRAVITY MEASUREMENTS, MADISON, UNIV OF WISCONSIN, 1963, 15 GRAVITY STILL METER 7182.2
Number of Data Records: 18427
Min/Max Data Record:
Date: 1977 07 10
Latitude: +17.46457
Longitude: -177.36667
Bathymetry, 2- Way Traveltime: 000130
Bathymetry, Corrected Depth: 10.0
Magnetics Total Field, 1st Sensor: 346860
Magnetics Residual Field: -11610
Free-Air Anomaly: -0851
Min/Max Data Record:
Date: 1977 07 21
Latitude: +28.21582
Longitude: -152.68158
Bathymetry, 2- Way Traveltime: 073390
Bathymetry, Corrected Depth: 5538.0
Magnetics Total Field, 1st Sensor: 373220
Magnetics Residual Field: +12700
Free-Air Anomaly: +3285