Survey Identifier: MW8707


Format Acronym: MGD77
Data Center File Number: 08020040
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19901105
Source Institution: HAWAII INSTITUTE OF GEOPHYSICS, LDGO
Country: U.S.A.
Platform Name: R/V MOANA WAVE
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): DAN FORNARI
Project: MW8707. EPR SURVEY.
Funding: NSF
Survey Departure Date (yyyymmdd): 19870607
Port of Departure: MANZANILLO,MEXICO
Survey Arrival Date (yyyymmdd): 19870709
Port of Arrival: GUAYAQUIL,ECUADOR
Navigation Instrumentation: GPS,SATNAV
Geodetic Datum/Position: PRIM=GPS, SEC=SATNAV
Bathymetry Instrumentation: 3.5 KHZ 30 DEGREE BEAM, 1 SEC SWEEP
Additional Forms of Bathymetric Data: ANALOG, DIGITAL, MICROFILM
Magnetics Instrumentation: GEOMETRICS G 801-3
Additional Forms of Magnetics Data: ANALOG, DIGITAL
Gravity Instrumentation: LACOSTE ROMBERG S-33
Additional Forms of Gravity Data: ANALOG, DIGITAL
Seismic Instrumentation: 40,120 CU.IN. AIRGUN
Formats of Seismic Data: ANALOG, MICROFILM
Topmost Latitude of Survey: +20
Bottommost Latitude: +03
Leftmost Longitude: -106
Rightmost Longitude: -093
General Digitizing Rate of Bathymetry: 015
General Sampling Rate of Bathymetry: 1/SECOND
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: NONE(PICKED PEAKS/TROUGHS OR 15 MIN INTERVALS IF SMOOTH)
General Digitizing Rate of Magnetics: 010
General Sampling Rate of Magnetics: 20
Magnetic Sensor Tow Distance: 0000
Sensor Depth: 00000
Horizontal Sensor Separation: 000
Reference Field Code: 88
Reference Field: IGRF-1985
Method of Applying Residual Field: FOR EACH DATA VALUE
General Digitizing Rate of Gravity: 010
General Sampling Rate of Gravity: 30
Theoretical Gravity Formula Code: 8
Theoretical Gravity Formula: IAG SYSTEM 1974
Reference System Code: 3
Reference System: IGSN 71
Corrections Applied: NONE APPLIED
Departure Base Station Gravity: 9789237
Departure Base Station Description: HONOLULU PIER 45
Arrival Base Station Gravity: 9799755
Arrival Base Station Description: MELBOURNE,AUSTRALIA
Additional Documentation: DATA TAKEN ON BOARD: BMG. SEAMARC II SIDESCAN SONAR, SEISMICS, XBT. LAB SHUT DOWN OUTSIDE ECUADORIAN WATERS, JULY 5, 1987. (-105.98,-93.75,3.92,19.04).
Number of Data Records: 60801

Min/Max Data Record:
Date: 1987 06 07
Latitude: +3.92342
Longitude: -105.97575
Bathymetry, 2- Way Traveltime: 016510
Bathymetry, Corrected Depth: 1232.0
Magnetics Total Field, 1st Sensor: 337450
Magnetics Residual Field: -09884
Observed Gravity: 9780439
Free-Air Anomaly: -1049

Min/Max Data Record:
Date: 1987 07 05
Latitude: +19.03700
Longitude: -93.74557
Bathymetry, 2- Way Traveltime: 059920
Bathymetry, Corrected Depth: 4500.0
Magnetics Total Field, 1st Sensor: 396480
Magnetics Residual Field: +08472
Observed Gravity: 9785954
Free-Air Anomaly: +0889