Survey Identifier: PHNX03MV
Format Acronym: MGD77
Data Center File Number: 15020139
Parameters Surveyed Code: 55111
File Creation Date (yyyymmdd): 19
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: R/V MELVILLE
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): P.LONSDALE
Project: PHOENIX LEG 3
Funding: NSF/OCE91-02183
Survey Departure Date (yyyymmdd): 19920818
Port of Departure: MANZANILLO, MEXICO
Survey Arrival Date (yyyymmdd): 19920908
Port of Arrival: SAN DIEGO, CALIFORNIA
Navigation Instrumentation: GPS, TRIMBLE MOD. 4000AX
Geodetic Datum/Position: LINEAR INTERP.BETWEEN ADJACENT FIXES
Bathymetry Instrumentation: SEABEAM 2000 WITH SIDESCAN
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: DIGITAL MAG. TAPE,ANAL. REC,35MM FILM
Gravity Instrumentation: NONE COLLECTED
Seismic Instrumentation: NONE COLLECTED
Topmost Latitude of Survey: +33
Bottommost Latitude: +18
Leftmost Longitude: -121
Rightmost Longitude: -104
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: DEPTHS CORRECTED FOR 5 METER SHIP DRAFT. NAVIGATION: DR CSE/SPD BETWEEN, 1 MINUTE INTERVAL GPS FIXES. GPS PRESENT 23+ HRS/DAY. FOLLOWING INFO FROM, MULTIBEAM BATHYMETRY: Heading Sensor Sperry MK 23 Gyro; Vertical reference, unit sensor Datawell Hippy Model 120; Navigation: Horizontal_Datum WGS84; Uncorrected meters, assumed SV 1500m/sec; Ship draft 5; Surface sound velocity, sensor.
Number of Data Records: 22000
Min/Max Data Record:
Date: 1992 08 18
Latitude: +18.32850
Longitude: -120.99150
Bathymetry, 2- Way Traveltime: 002933
Bathymetry, Corrected Depth: 219.0
Magnetics Total Field, 1st Sensor: 411500
Magnetics Residual Field: -08847
Min/Max Data Record:
Date: 1992 09 02
Latitude: +32.70683
Longitude: -104.29266
Bathymetry, 2- Way Traveltime: 066373
Bathymetry, Corrected Depth: 4996.0
Magnetics Total Field, 1st Sensor: 481200
Magnetics Residual Field: +07762