Survey Identifier: 72110805


Format Acronym: MGD77
Data Center File Number: 08010020
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19830224
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): L. KROENKE
Project: NAZCA PLATE PROJECT KK72-11-08-05
Funding: IDOE/ONR
Survey Departure Date (yyyymmdd): 19730306
Port of Departure: GUAYAQUIL, EQUADOR
Survey Arrival Date (yyyymmdd): 19730329
Port of Arrival: ANTOFAGASTA, 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: -02
Bottommost Latitude: -24
Leftmost Longitude: -083
Rightmost Longitude: -070
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: 157
General Sampling Rate of Magnetics: 00
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: 169
General Sampling Rate of Gravity: 00
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), REFRX, ASPER 35-38, 09 XBT 70-95, PCOD, HEAT FLOW, 12 KHZ. 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: 9575

Min/Max Data Record:
Date: 1973 03 06
Latitude: -23.65350
Longitude: -82.64773
Bathymetry, 2- Way Traveltime: 000100
Bathymetry, Corrected Depth: 7.0
Magnetics Total Field, 1st Sensor: 252540
Magnetics Residual Field: -04190
Free-Air Anomaly: -2490

Min/Max Data Record:
Date: 1973 03 29
Latitude: -2.28383
Longitude: -70.16882
Bathymetry, 2- Way Traveltime: 103860
Bathymetry, Corrected Depth: 7926.0
Magnetics Total Field, 1st Sensor: 311390
Magnetics Residual Field: +03620
Free-Air Anomaly: +1110