Survey Identifier: YAQ7310
Format Acronym: MGD77
Data Center File Number: 07010043
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19741203
Source Institution: OREGON STATE UNIVERSITY
Country: U.S.A.
Platform Name: YAQUINA
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): DR. RICHARD COUCH
Project: NAZCA PLATE, YAQUINA LONG OCEAN CRUISE 1973 LEG 10
Funding: ONR
Survey Departure Date (yyyymmdd): 19740422
Port of Departure: SAN DIEGO, CALIFORNIA
Survey Arrival Date (yyyymmdd): 19740427
Port of Arrival: NEWPORT, OREGON
Navigation Instrumentation: SATELLITE / LORAN A
Geodetic Datum/Position: SATTELITE, 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: 20 AND 40 CU IN AIRGUNS
Formats of Seismic Data: SINGLE CHANNEL ANALOG, MICROFILM
Topmost Latitude of Survey: +45
Bottommost Latitude: +32
Leftmost Longitude: -126
Rightmost Longitude: -117
General Digitizing Rate of Bathymetry: 050
General Sampling Rate of Bathymetry: 2 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
General Digitizing Rate of Gravity: 050
General Sampling Rate of Gravity: 00
Theoretical Gravity Formula Code: 3
Theoretical Gravity Formula: IAG SYSTEM (1967)
Reference System: SEE ADD DOC / 18
Corrections Applied: NONE
Departure Base Station Gravity: 9795336
Departure Base Station Description: SEE ADD DOC /19,20
Additional Documentation: 14 U.S. COMMERCE PIER G=980104.3, 15 WA 453 WOLLARD AND ROSE 1963 PG 94, 15 GRAVITY ANOMALIES CALCULATED ORIGINALLY RELATIVE TO COMM PIER G=980118.8, 15 AND 1930 THEO FORMULA THEN ADUSTED TO NEW COMM PIER VALUE AND IAG 1967, 15 USING DELTA G(MGAL)=2.65+(-13.695+0.135*SIN(LAT)**@)*SIN(LAT)**2
Number of Data Records: 2753
Min/Max Data Record:
Date: 1974 04 22
Latitude: +32.83570
Longitude: -125.60850
Bathymetry, 2- Way Traveltime: 000850
Bathymetry, Corrected Depth: 64.0
Magnetics Total Field, 1st Sensor: 494040
Magnetics Residual Field: -05900
Free-Air Anomaly: -1040
Min/Max Data Record:
Date: 1974 04 27
Latitude: +44.87800
Longitude: -117.51420
Bathymetry, 2- Way Traveltime: 058750
Bathymetry, Corrected Depth: 4400.0
Magnetics Total Field, 1st Sensor: 517910
Magnetics Residual Field: +02020
Free-Air Anomaly: +0393