Survey Identifier: 74010904
Format Acronym: MGD77
Data Center File Number: 08010028
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19830214
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): J. F. CAMPBELL
Project: NAZCA PLATE PROJECT KK74-01-09-04
Funding: IDOE
Survey Departure Date (yyyymmdd): 19740511
Port of Departure: EASTER ISL., CHILE
Survey Arrival Date (yyyymmdd): 19740522
Port of Arrival: VALPARAISO, CHILE
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: VARIAN PRECESSION MAGNETOMETER
Additional Forms of Magnetics Data: ANALOG, MICROFILM
Gravity Instrumentation: LACOSTE ROMBERG S-33
Additional Forms of Gravity Data: ANALOG, MICROFILM
Seismic Instrumentation: (SEE ADD.DOC. 18)
Formats of Seismic Data: ANALOG, MICROFILM
Topmost Latitude of Survey: -24
Bottommost Latitude: -34
Leftmost Longitude: -110
Rightmost Longitude: -071
General Digitizing Rate of Bathymetry: 63
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: 75
Horizontal Sensor Separation: 000
Reference Field Code: 03
Reference Field: IGRF-65
Method of Applying Residual Field: FOR EACH DATA VALUE
General Digitizing Rate of Gravity: 050
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: 0000000
Arrival Base Station Gravity: 0000000
Additional Documentation: 09 AIRGUN, SPARKER, B, M, G, REFLX (HIGH, LOW, MIX, VLOW), RD. 15 GRAVITY BASE STATIONS IN GEORGE P. WOOLLARD AND JOHN C. ROSE, 15 INTERNATIONAL GRAVITY MEASUREMENTS, MADISON, UNIV OF WISCONSIN, 1963
Number of Data Records: 6244
Min/Max Data Record:
Date: 1974 05 11
Latitude: -33.21010
Longitude: -109.28171
Bathymetry, 2- Way Traveltime: 001850
Bathymetry, Corrected Depth: 139.0
Magnetics Total Field, 1st Sensor: 263000
Magnetics Residual Field: -14030
Free-Air Anomaly: -1840
Min/Max Data Record:
Date: 1974 05 22
Latitude: -24.97520
Longitude: -71.82357
Bathymetry, 2- Way Traveltime: 076730
Bathymetry, Corrected Depth: 5793.0
Magnetics Total Field, 1st Sensor: 350000
Magnetics Residual Field: +05270
Free-Air Anomaly: +1390