Survey Identifier: YAQ7304
Format Acronym: MGD77
Data Center File Number: 07010037
Parameters Surveyed Code: 55133
File Creation Date (yyyymmdd): 19741216
Source Institution: OREGON STATE UNIVERSITY
Country: U.S.A.
Platform Name: YAQUINA
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): DRS. J. CORLISS, J. DYMOND
Project: NAZCA PLATE, YAQUINA LONG OCEAN CRUISE 1973 LEG 4
Funding: IDOE
Survey Departure Date (yyyymmdd): 19731112
Port of Departure: CALLAO, PERU
Survey Arrival Date (yyyymmdd): 19731213
Port of Arrival: VALPARAISO, CHILE
Navigation Instrumentation: SATELLITE
Geodetic Datum/Position: SATELLITE, DEAD RECKONING
Bathymetry Instrumentation: 12 AND 3.5 KHZ WIDE BEAM (60 DEG)
Additional Forms of Bathymetric Data: ANALOG RECORDS, MICROFILM
Magnetics Instrumentation: GEOMETRICS G801/3 PROTON PRECESSION
Additional Forms of Magnetics Data: ANALOG RECORDS
Seismic Instrumentation: 40 CU. IN. AIRGUN, STREAMER, EPC
Formats of Seismic Data: SINGLE CHANNEL ANALOG, MICROFILM
Topmost Latitude of Survey: -12
Bottommost Latitude: -33
Leftmost Longitude: -115
Rightmost Longitude: -071
General Digitizing Rate of Bathymetry: 050
General Sampling Rate of Bathymetry: 1,2 SEC SWEE
Assumed Sound Velocity: 14300
Bathymetric Datum Code: 00
Interpolation Scheme: NONE (PEAKS, TROUGHS AND INFLECTIONS DIGITIZED)
General Digitizing Rate of Magnetics: 050
General Sampling Rate of Magnetics: 03
Magnetic Sensor Tow Distance: 215
Sensor Depth: 30
Reference Field Code: 03
Reference Field: IGRF-65
Method of Applying Residual Field: LINEAR INTERPOLATION BETWEEN NAVIGATION POINTS
Number of Data Records: 11656
Min/Max Data Record:
Date: 1973 11 12
Latitude: -32.97430
Longitude: -114.61200
Bathymetry, 2- Way Traveltime: 000625
Bathymetry, Corrected Depth: 47.0
Magnetics Total Field, 1st Sensor: 265510
Magnetics Residual Field: -06780
Min/Max Data Record:
Date: 1973 12 13
Latitude: -12.33350
Longitude: -71.81730
Bathymetry, 2- Way Traveltime: 078700
Bathymetry, Corrected Depth: 5951.0
Magnetics Total Field, 1st Sensor: 377300
Magnetics Residual Field: +08550