Survey Identifier: YAQ7109
Format Acronym: MGD77
Data Center File Number: 07010032
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19750331
Source Institution: OREGON STATE UNIVERSITY
Country: U.S.A.
Platform Name: YAQUINA
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): DRS. J. DYMOND, D. F. HEINRICHS
Project: NAZCA PLATE, YAQUINA LONG OCEAN CRUISE 1971 LEG 9
Funding: IDOE
Survey Departure Date (yyyymmdd): 19720315
Port of Departure: TALARA, PERU
Survey Arrival Date (yyyymmdd): 19720410
Port of Arrival: ACAPULCO, MEXICO
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
Gravity Instrumentation: LACOSTE AND ROMBERG AIR-SEA S-42
Additional Forms of Gravity Data: ANALOG RECORDS
Seismic Instrumentation: 40 CU. IN AIRGUN
Formats of Seismic Data: SINGLE CHANNEL ANALOG, MICROFILM
Topmost Latitude of Survey: +17
Bottommost Latitude: -07
Leftmost Longitude: -109
Rightmost Longitude: -081
General Digitizing Rate of Bathymetry: 050
General Sampling Rate of Bathymetry: 1 SEC SWEEP
Assumed Sound Velocity: 14300
Bathymetric Datum Code: 00
Interpolation Scheme: NONE
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
General Digitizing Rate of Gravity: 050
General Sampling Rate of Gravity: 00
Theoretical Gravity Formula Code: 2
Theoretical Gravity Formula: INTERNAT. 1930
Reference System: SEE ADD DOC / 18
Corrections Applied: NONE
Departure Base Station Gravity: 978116
Departure Base Station Description: SEE ADD DOC / 19
Additional Documentation: 14 U.S. COMMERCE PIER G=980118.8, 15 WA6127 WOLLARD AND ROSE 1963 PG 115
Number of Data Records: 14829
Min/Max Data Record:
Date: 1972 03 15
Latitude: -6.92720
Longitude: -108.59780
Bathymetry, 2- Way Traveltime: 018500
Bathymetry, Corrected Depth: 1380.0
Magnetics Total Field, 1st Sensor: 303220
Magnetics Residual Field: -07550
Free-Air Anomaly: -1471
Min/Max Data Record:
Date: 1972 04 10
Latitude: +16.55170
Longitude: -81.60330
Bathymetry, 2- Way Traveltime: 071200
Bathymetry, Corrected Depth: 5369.0
Magnetics Total Field, 1st Sensor: 417990
Magnetics Residual Field: +05410
Free-Air Anomaly: +0462