Survey Identifier: PLUM08WT
Format Acronym: MGD77
Data Center File Number: 15040199
Parameters Surveyed Code: 51311
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): NONE (TRANSIT)
Project: PLUME LEG 8
Funding: NSF OCE90-00048
Survey Departure Date (yyyymmdd): 19900629
Port of Departure: LA GUAIRA,VENEZULA
Survey Arrival Date (yyyymmdd): 19900709
Port of Arrival: MANZANILLO, MEXICO
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) & 3.5
Additional Forms of Bathymetric Data: ANAL.REC,35MM FILM,DIGITAL MAG. TAPE
Magnetics Instrumentation: NONE COLLECTED
Gravity Instrumentation: BELL BGM-3 METER
Additional Forms of Gravity Data: DIGITAL MAG TAPE
Seismic Instrumentation: NONE COLLECTED
Topmost Latitude of Survey: +20
Bottommost Latitude: +07
Leftmost Longitude: -105
Rightmost Longitude: -066
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 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: 9782373
Departure Base Station Description: DOD 0034-8 LA GUAIRA
Arrival Base Station Gravity: 9785814
Arrival Base Station Description: INST.OCEANOGRAPHICO,MANZANILLO
Additional Documentation: DEPTHS CORRECTED FOR 5 METER SHIP DRAFT. PROCESSED BY GEOLOGICAL DATA CENTER, SCRIPPS INSTITUTION OF OCEANOGRAPHY, 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 NAVIGATION. (GRAVITY NOT FUNDED. COLLECTED BUT NOT PROCESSED.), NGDC extracted vertical beam from multibeam bathymetry and inserted data as, single beam bathymetry between 66.99310 and 72.11276 degrees W. longitude.
Number of Data Records: 12828
Min/Max Data Record:
Date: 1990 06 29
Latitude: +6.98940
Longitude: -104.39963
Bathymetry, 2- Way Traveltime: 000707
Bathymetry, Corrected Depth: 53.0
Min/Max Data Record:
Date: 1990 07 09
Latitude: +19.07375
Longitude: -66.99310
Bathymetry, 2- Way Traveltime: 068893
Bathymetry, Corrected Depth: 5190.0