Survey Identifier: MRTN15WT


Format Acronym: MGD77
Data Center File Number: 15040137
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): ORCUTT J.,BUHL P.
Project: MARATHON LEG 15
Funding: NSF OCE83-17741
Survey Departure Date (yyyymmdd): 19850521
Port of Departure: PANAMA CANAL ZONE,BALBOA
Survey Arrival Date (yyyymmdd): 19850612
Port of Arrival: SAN DIEGO,CALIFORNIA
Navigation Instrumentation: SATNAV,AUTO LOG GYRO+2D DOPPLER SPD LOG
Geodetic Datum/Position: LINEAR INTERP.BETWEEN ADJACENT FIXES
Bathymetry Instrumentation: SEABEAM VERT.BEAM(2&2/3DEG)
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,DIGITAL MAG. TAPE
Gravity Instrumentation: NONE COLLECTED
Seismic Instrumentation: NONE COLLECTED
Formats of Seismic Data: NONE COLLECTED
Topmost Latitude of Survey: +31
Bottommost Latitude: +07
Leftmost Longitude: -118
Rightmost Longitude: -079
General Digitizing Rate of Bathymetry: 010
General Sampling Rate of Bathymetry: 1PING IN H20
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
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 1980
Method of Applying Residual Field: LIN.INTERP.POINTS WITHIN ONE DEGREE SQUARE
Additional Documentation: DEPTHS CORRECTED FOR 5 METER SHIP DRAFT.
Number of Data Records: 30435

Min/Max Data Record:
Date: 1985 05 21
Latitude: +7.03087
Longitude: -117.22616
Bathymetry, 2- Way Traveltime: 001653
Bathymetry, Corrected Depth: 124.0
Magnetics Total Field, 1st Sensor: 353550
Magnetics Residual Field: -03280

Min/Max Data Record:
Date: 1985 06 12
Latitude: +30.51950
Longitude: -79.51586
Bathymetry, 2- Way Traveltime: 065986
Bathymetry, Corrected Depth: 4966.0
Magnetics Total Field, 1st Sensor: 364730
Magnetics Residual Field: +04123