Survey Identifier: YAQ7303
Format Acronym: MGD77
Data Center File Number: 07010056
Parameters Surveyed Code: 55133
File Creation Date (yyyymmdd): 19741208
Source Institution: OREGON STATE UNIVERSITY
Country: U.S.A.
Platform Name: YAQUINA
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): DR. G. ROSS HEATH
Project: NAZCA PLATE, YAQUINA LONG OCEAN CRUISE 1973 LEG 3
Funding: IDOE
Survey Departure Date (yyyymmdd): 19731009
Port of Departure: PUNTARENAS, COSTA RICA
Survey Arrival Date (yyyymmdd): 19731107
Port of Arrival: CALLAO, PERU
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: BOLT 40 AND 300 CU. IN. AIRGUNS
Formats of Seismic Data: SINGLE CHANNEL ANALOG, MICROFILM
Topmost Latitude of Survey: +09
Bottommost Latitude: -16
Leftmost Longitude: -106
Rightmost Longitude: -076
General Digitizing Rate of Bathymetry: 050
General Sampling Rate of Bathymetry: 8 SEC SWEEP
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
Additional Documentation: 06 3.5 KHZ, 1 SEC SWEEP / 12 KHZ ALSO 1 AND 2 SEC
Number of Data Records: 14380
Min/Max Data Record:
Date: 1973 10 09
Latitude: -15.54390
Longitude: -105.34390
Bathymetry, 2- Way Traveltime: 001200
Bathymetry, Corrected Depth: 90.0
Magnetics Total Field, 1st Sensor: 273430
Magnetics Residual Field: -08260
Min/Max Data Record:
Date: 1973 11 07
Latitude: +9.52270
Longitude: -76.45260
Bathymetry, 2- Way Traveltime: 070625
Bathymetry, Corrected Depth: 5325.0
Magnetics Total Field, 1st Sensor: 370020
Magnetics Residual Field: +04550