Survey Identifier: WSFL01WT
Format Acronym: MGD77
Data Center File Number: 15040234
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: R/V T.WASHINGTON
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): P.LONSDALE
Project: WESTFALL LEG 1
Funding: U.C. GENERAL FUNDS
Survey Departure Date (yyyymmdd): 19901108
Port of Departure: SAN DIEGO, CALIFORNIA
Survey Arrival Date (yyyymmdd): 19901112
Port of Arrival: SAN DIEGO, CALIFORNIA
Navigation Instrumentation: GPS,AUTO LOG GYRO+2D DOPPLER SPD
Geodetic Datum/Position: LINEAR INTERP.BETWEEN ADJACENT FIXES
Bathymetry Instrumentation: SEABEAM VERTICAL BEAM (2&2/3DEG)&3.5KHZ
Additional Forms of Bathymetric Data: ANAL.REC,35MM FILM,DIGITAL MAG. TAPE
Magnetics Instrumentation: GEOMETRICS MAGNETOMETER MOD G-801/3
Additional Forms of Magnetics Data: ANAL.REC,35MM FILM,DIGITAL MAG. TAPE
Gravity Instrumentation: BELL BGM-3 METER
Additional Forms of Gravity Data: DIGITAL MAG TAPE
Seismic Instrumentation: WATER GUN
Formats of Seismic Data: ANALOGUE RECORDS, 35MM FILM
Topmost Latitude of Survey: +33
Bottommost Latitude: +28
Leftmost Longitude: -121
Rightmost Longitude: -117
General Digitizing Rate of Bathymetry: 010
General Sampling Rate of Bathymetry: 1PING IN H2O
Assumed Sound Velocity: 15000
Interpolation Scheme: 1 MINUTE AVERAGES EXTRACTED FROM SEABEAM VERTICAL BEAMS
General Digitizing Rate of Magnetics: 010
General Sampling Rate of Magnetics: 06
Reference Field Code: 88
Reference Field: IGRF-1990
Method of Applying Residual Field: LIN.INTERP.POINTS WITHIN ONE DEGREE SQUARE
General Digitizing Rate of Gravity: 010
General Sampling Rate of Gravity: 01
Theoretical Gravity Formula Code: 3
Theoretical Gravity Formula: IAG SYSTEM 1967
Reference System Code: 3
Reference System: SYSTEM IGSN 71
Corrections Applied: EOTVOS AND METER DRIFT
Departure Base Station Gravity: 9795355
Departure Base Station Description: SIO MAR FAC PIER, SAN DIEGO
Arrival Base Station Gravity: 9795355
Arrival Base Station Description: SIO MAR FAC PIER, SAN DIEGO
Additional Documentation: PROCESSED BY GEOLOGICAL DATA CENTER, SCRIPPS INSTITUTION OF OCEANOGRAPHY, SYST_COMMENTS DEPTHS CORRECTED FOR 5 METER SHIP DRAFT, 16 beams, 12.158 kHz, NAV.: DR CSE/SPD BETWEEN 10 MINUTE INTERVAL GPS FIXES. GPS PRESENT 23 HRS/DAY, GRAVITY: 1 SEC METER COUNTS FILTERED WITH 25 POLE FILTER WITH 148 SEC DELAY. FREE AIR ANOMALY SPIKES PRESENT BECAUSE SAME FILTER NOT USED FOR NAV.
Number of Data Records: 4838
Min/Max Data Record:
Date: 1990 11 08
Latitude: +28.42288
Longitude: -120.74464
Bathymetry, 2- Way Traveltime: 000733
Bathymetry, Corrected Depth: 55.0
Magnetics Total Field, 1st Sensor: 449930
Magnetics Residual Field: -03865
Observed Gravity: 9791254
Free-Air Anomaly: -0765
Min/Max Data Record:
Date: 1990 11 12
Latitude: +32.69367
Longitude: -117.22645
Bathymetry, 2- Way Traveltime: 058147
Bathymetry, Corrected Depth: 4358.0
Magnetics Total Field, 1st Sensor: 484180
Magnetics Residual Field: +03676
Observed Gravity: 9796022
Free-Air Anomaly: +0684