Survey Identifier: DI8702
Format Acronym: MGD77
Data Center File Number: 03030038
Parameters Surveyed Code: 50000
File Creation Date (yyyymmdd): 19960703
Source Institution: Oceanic and Atmospheric Research
Country: US
Platform Name: R/V Discoverer
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): Fox
Project: VENTS
Survey Departure Date (yyyymmdd): 19870820
Survey Arrival Date (yyyymmdd): 19870822
Navigation Instrumentation: Loran
Bathymetry Instrumentation: SeaBeam (Vertical Beam Extraction)
Topmost Latitude of Survey: +45
Bottommost Latitude: +43
Leftmost Longitude: -131
Rightmost Longitude: -126
General Digitizing Rate of Bathymetry: 010
General Sampling Rate of Bathymetry: VAR W/ DEPTH
Interpolation Scheme: 1 MINUTE EXTRACTIONS CLOSEST TO THE MINUTE (VERTICAL BM)
Additional Documentation: Loran data was shifted to correlate with transit satellite fixes, collected during the cruise to force the positions to near-geodetic. More shifts followed.
Number of Data Records: 1099
Min/Max Data Record:
Date: 1987 08 20
Latitude: +43.20697
Longitude: -130.48450
Bathymetry, 2- Way Traveltime: 023213
Bathymetry, Corrected Depth: 1721.0
Min/Max Data Record:
Date: 1987 08 22
Latitude: +44.44838
Longitude: -126.83435
Bathymetry, 2- Way Traveltime: 056493
Bathymetry, Corrected Depth: 4228.0