Survey Identifier: TO9001WT
Format Acronym: MGD77
Data Center File Number: 15040219
Parameters Surveyed Code: 55111
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): K. BRINK (WHOI)
Project: TOPO90 LEG 1
Funding: ONR 1219
Survey Departure Date (yyyymmdd): 19900912
Port of Departure: SAN DIEGO, CALIFORNIA
Survey Arrival Date (yyyymmdd): 19900919
Port of Arrival: SAN DIEGO, CALIFORNIA
Navigation Instrumentation: SATNAV/GPS,AUTO LOG GYRO+2D DOPPLER SPD
Geodetic Datum/Position: LINEAR INTERP.BETWEEN ADJACENT FIXES
Bathymetry Instrumentation: SEABEAM VERTICAL BEAM (2&2/3 DEG)
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: NONE COLLECTED
Seismic Instrumentation: NONE COLLECTED
Formats of Seismic Data: NONE COLLECTED
Topmost Latitude of Survey: +34
Bottommost Latitude: +32
Leftmost Longitude: -129
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: 03
Reference Field: IGRF-1985
Method of Applying Residual Field: LIN.INTERP.POINTS WITHIN ONE DEGREE SQUARE
Additional Documentation: PROCESSED BY GEOLOGICAL DATA CENTER, SCRIPPS INSTITUTION OF OCEANOGRAPHY. SYST_COMMENTS DEPTHS CORRECTED FOR 5 METER SHIP DRAFT, 12.158 kHz, 16 beams, time instrumentation = Hewlett-Packard HP-5065A rubidium frequency standard. NAVI_INSTRU Amatec-Straza 2-D Doppler speed log; Sperry MK-27 Gyro; Trimble, GPS Receiver, Mod 4000.
Number of Data Records: 8444
Min/Max Data Record:
Date: 1990 09 12
Latitude: +32.06567
Longitude: -128.07376
Bathymetry, 2- Way Traveltime: 000467
Bathymetry, Corrected Depth: 35.0
Magnetics Total Field, 1st Sensor: 459300
Magnetics Residual Field: -04017
Min/Max Data Record:
Date: 1990 09 19
Latitude: +33.09517
Longitude: -117.22627
Bathymetry, 2- Way Traveltime: 063400
Bathymetry, Corrected Depth: 4757.0
Magnetics Total Field, 1st Sensor: 482410
Magnetics Residual Field: +02342