Survey Identifier: 72110806
Format Acronym: MGD77
Data Center File Number: 08010021
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19830921
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): D. HUSSONG
Project: NAZCA PLATE PROJECT KK72-11-08-06
Funding: IDOE/ONR
Survey Departure Date (yyyymmdd): 19730403
Port of Departure: ANTOFAGASTA, CHILE
Survey Arrival Date (yyyymmdd): 19730427
Port of Arrival: EASTER IS., 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 PROTON 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: -17
Bottommost Latitude: -28
Leftmost Longitude: -117
Rightmost Longitude: -070
General Digitizing Rate of Bathymetry: 46
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
Magnetic Sensor Tow Distance: 0000
Sensor Depth: 00000
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), REFRX, XBT 96-139, 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: 14383
Min/Max Data Record:
Date: 1973 04 03
Latitude: -27.14106
Longitude: -116.98835
Bathymetry, 2- Way Traveltime: 001560
Bathymetry, Corrected Depth: 117.0
Magnetics Total Field, 1st Sensor: 254190
Magnetics Residual Field: -11260
Free-Air Anomaly: -2380
Min/Max Data Record:
Date: 1973 04 27
Latitude: -17.94072
Longitude: -70.33021
Bathymetry, 2- Way Traveltime: 099960
Bathymetry, Corrected Depth: 7617.0
Magnetics Total Field, 1st Sensor: 353730
Magnetics Residual Field: +07990
Free-Air Anomaly: +1020