Survey Identifier: PHNX02MV
Format Acronym: MGD77
Data Center File Number: 15020133
Parameters Surveyed Code: 55131
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): R.BATIZA
Project: PHOENIX LEG 2
Funding: NSF OCE91-02183
Survey Departure Date (yyyymmdd): 19920718
Port of Departure: ACAPULCO, MEXICO
Survey Arrival Date (yyyymmdd): 19920814
Port of Arrival: MANZANILLO, MEXICO
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: 20
Bottommost Latitude: 09
Leftmost Longitude: -105
Rightmost Longitude: -099
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
Additional Documentation: PROCESSED BY GEOLOGICAL DATA CENTER, SCRIPPS INSTITUTION OF OCEANOGRAPHY; DEPTHS CORRECTED FOR 5 METER SHIP DRAFT; NAVIGATION: DR CSE/SPD IF 1 MINUTE, INTERVAL GPS FIXES MISSING; 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: 38260
Min/Max Data Record:
Date: 1992 07 18
Latitude: +9.38867
Longitude: -104.70183
Bathymetry, 2- Way Traveltime: 000947
Bathymetry, Corrected Depth: 71.0
Magnetics Total Field, 1st Sensor: 357830
Magnetics Residual Field: -05905
Min/Max Data Record:
Date: 1992 08 14
Latitude: +19.06700
Longitude: -99.89883
Bathymetry, 2- Way Traveltime: 071453
Bathymetry, Corrected Depth: 5389.0
Magnetics Total Field, 1st Sensor: 399420
Magnetics Residual Field: +01563