Survey Identifier: HS880621
Format Acronym: MGD77
Data Center File Number: J1020036
Parameters Surveyed Code: 53530
File Creation Date (yyyymmdd): 19910920
Source Institution: HYDROGRAPHIC DEPARTMENT
Country: JAPAN
Platform Name: SHOYO
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): M.TSUNEMASA
Project: SUMISU ISLAND SUBMARINE GEOLOGICAL STRUCTURE SURVEY
Funding: HYDROGRAPHIC DEP
Survey Departure Date (yyyymmdd): 198806
Port of Departure: TOKYO
Survey Arrival Date (yyyymmdd): 198807
Port of Arrival: TOKYO
Navigation Instrumentation: LORAN-C,NNSS,GPS
Geodetic Datum/Position: LORAN-C,NNSS,GPS
Topmost Latitude of Survey: +33
Bottommost Latitude: +30
Leftmost Longitude: +140
Rightmost Longitude: +142
General Digitizing Rate of Bathymetry: 014
General Digitizing Rate of Gravity: 015
Additional Documentation: OLD NGDC:56080036
Number of Data Records: 20143
Min/Max Data Record:
Date: 1988 06 21
Latitude: +30.66034
Longitude: +140.32384
Bathymetry, Corrected Depth: 1071.0
Observed Gravity: 9793284
Free-Air Anomaly: -1421
Min/Max Data Record:
Date: 1988 07 17
Latitude: +32.24536
Longitude: +141.70361
Bathymetry, Corrected Depth: 9304.0
Observed Gravity: 9795841
Free-Air Anomaly: +1167