Survey Identifier: EW9006
Format Acronym: MGD77
Data Center File Number: 01210032
Parameters Surveyed Code: 55511
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): H.FLEMING
Project: AEGIR RIDGE, VORING PLATEAU
Funding: NAVY / NRL
Survey Departure Date (yyyymmdd): 19900725
Port of Departure: REYKJAVIK, ICELAND
Survey Arrival Date (yyyymmdd): 19900822
Port of Arrival: BERGEN, NORWAY
Navigation Instrumentation: MAGNAVOX MX-1107RS TRANSIT, T-SET GPS
Geodetic Datum/Position: GPS/SATELLITE 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: NO SEISMIC DATA COLLECTED
Topmost Latitude of Survey: +69
Bottommost Latitude: +60
Leftmost Longitude: -024
Rightmost Longitude: +006
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: 12
Reference Field: IGRF-85
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 .07645 MGAL/DAY, DC 12.93
Departure Base Station Gravity: 9822797
Departure Base Station Description: 5450 REYKJAVIK AA
Arrival Base Station Gravity: 9819511
Arrival Base Station Description: ACIC 2030-1
Additional Documentation: TIME: KINEMETRICS 468-DC, SPEED: FURUNO CI-30, HEADING: SPERRY MK-27, SCIENCE OFFICER: T.AITKEN COMPUTER SYSTEMS: R.BLAES, 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: 42515
Min/Max Data Record:
Date: 1990 07 25
Latitude: +60.49741
Longitude: -23.57095
Bathymetry, 2- Way Traveltime: 000740
Bathymetry, Corrected Depth: 56.0
Magnetics Total Field, 1st Sensor: 506020
Magnetics Residual Field: -14160
Free-Air Anomaly: -0464
Min/Max Data Record:
Date: 1990 08 22
Latitude: +68.89302
Longitude: +5.65269
Bathymetry, 2- Way Traveltime: 052610
Bathymetry, Corrected Depth: 3893.0
Magnetics Total Field, 1st Sensor: 525310
Magnetics Residual Field: +03770
Free-Air Anomaly: +0965