Survey Identifier: RP14SU84

Format Acronym: MGD77
Data Center File Number: 03020143
Parameters Surveyed Code: 50000
File Creation Date (yyyymmdd): 19961125
Source Institution: Oceanic and Atmospheric Research
Country: US
Platform Name: R/V Surveyor
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): Embley/Hammond
Project: Polymap Leg 1
Survey Departure Date (yyyymmdd): 19840330
Survey Arrival Date (yyyymmdd): 19840424
Navigation Instrumentation: Loran
Bathymetry Instrumentation: SeaBeam (Vertical Beam Extraction)
Topmost Latitude of Survey: +51
Bottommost Latitude: +41
Leftmost Longitude: -131
Rightmost Longitude: -126
General Digitizing Rate of Bathymetry: 010
General Sampling Rate of Bathymetry: VAR W/ DEPTH
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. Part of this data was cut and data from the 09880002(GPS) cruise, used to replace it in a gridded data set. Data was cut from the following, times: JD101 22:40 - JD102 01:01. "Bad" data appears to occur during the, times of ~16:17-16:24 and ~16:47-16:51 on JD 104. Some of this bad data (in, the "raw" data set) was deleted and replaced with 0's.
Number of Data Records: 15300

Min/Max Data Record:
Date: 1984 03 30
Latitude: +41.15698
Longitude: -130.85609
Bathymetry, 2- Way Traveltime: 013773
Bathymetry, Corrected Depth: 1017.0

Min/Max Data Record:
Date: 1984 04 24
Latitude: +50.38934
Longitude: -126.50979
Bathymetry, 2- Way Traveltime: 049680
Bathymetry, Corrected Depth: 3709.0