Survey Identifier: EW9209
Format Acronym: MGD77
Data Center File Number: 01210026
Parameters Surveyed Code: 55513
File Creation Date (yyyymmdd): 19961104
Source Institution: LAMONT-DOHERTY EARTH OBSERVATORY (LDEO)
Country: USA
Platform Name: R/V MAURICE EWING
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): G.MOUNTAIN, W.CURRY
Project: CEARA RISE / AMAZON CONE
Funding: NSF OCE91-16500
Survey Departure Date (yyyymmdd): 19920823
Port of Departure: BRIDGETOWN, BARBADOS
Survey Arrival Date (yyyymmdd): 19920925
Port of Arrival: BRIDGETOWN, BARBADOS
Navigation Instrumentation: MAGNAVOX MX-1107RS, T-SET & MX-4200 GPS
Geodetic Datum/Position: GPS/TRANSIT FIXES + SPEED/HEADING
Bathymetry Instrumentation: ATLAS HYDROSWEEP-DS MULTIBEAM SONAR
Additional Forms of Bathymetric Data: RAYTHEON 3.5KHZ PDR
Magnetics Instrumentation: VARIAN V-75 MAGNETOMETER
Gravity Instrumentation: BODENSEEWERKE KSS-30 GRAVIMETER
Additional Forms of Gravity Data: BELL BGM-3 GRAVIMETER
Seismic Instrumentation: DIGICON DMS-2000 MULTI-CHANNEL ARRAY
Topmost Latitude of Survey: +14
Bottommost Latitude: +03
Leftmost Longitude: -060
Rightmost Longitude: -041
General Digitizing Rate of Bathymetry: 010
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: 1-MINUTE INTERVALS
General Digitizing Rate of Magnetics: 010
Reference Field Code: 88
Reference Field: IGRF-90
Method of Applying Residual Field: BILINEAR INTERPOLATION IN 1-DEGREE SQUARE
General Digitizing Rate of Gravity: 010
Theoretical Gravity Formula Code: 2
Theoretical Gravity Formula: INTERNATIONAL 30
Reference System Code: 2
Reference System: POTSDAM SYSTEM
Corrections Applied: DRIFT -.0050 MGAL/DAY, DC .99
Departure Base Station Gravity: 9782944
Departure Base Station Description: ACIC 0865-4
Arrival Base Station Gravity: 9782944
Arrival Base Station Description: ACIC 0865-4
Additional Documentation: TIME: KINEMETRICS GPS-DC, SPEED: FURUNO CI-30, HEADING: SPERRY MK-27, OTHER DATA: WHOI JUMBO PISTON CORES, SCS, PCO2 (SEA AND AIR), SCIENCE OFFICER: J.STENNETT COMPUTER SYSTEMS: W.ROBINSON, DATA REDUCED BY LDEO MARINE OFFICE DATA REDUCTION GROUP, CONTACT LDEO MG&G ARCHIVIST WITH QUESTIONS/PROBLEMS: MGGDB@LDEO.COLUMBIA.EDU, ORIGINAL RECORDS ARCHIVED AT LDEO
Number of Data Records: 47841
Min/Max Data Record:
Date: 1992 08 23
Latitude: +3.24547
Longitude: -59.66056
Bathymetry, 2- Way Traveltime: 000200
Bathymetry, Corrected Depth: 15.0
Magnetics Total Field, 1st Sensor: 285500
Magnetics Residual Field: -01140
Free-Air Anomaly: -0759
Min/Max Data Record:
Date: 1992 09 25
Latitude: +13.10867
Longitude: -41.60558
Bathymetry, 2- Way Traveltime: 065300
Bathymetry, Corrected Depth: 4925.0
Magnetics Total Field, 1st Sensor: 341590
Magnetics Residual Field: +04620
Free-Air Anomaly: +0852