Survey Identifier: RN87
Format Acronym: MGD77
Data Center File Number: J7010002
Parameters Surveyed Code: 55151
File Creation Date (yyyymmdd): 19921016
Source Institution: UNIV OF THE RYUKYUS
Country: JAPAN
Platform Name: NAGASAKI MARU
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): UJIIE,HIROSHI
Project: RN-87 OFF ISHIGAKI-IRIOMOTE JIMA AND KERAMA-GAP
Funding: DEPT OF MARINE SCI.
Survey Departure Date (yyyymmdd): 19870415
Port of Departure: NAHA,OKINAWA
Survey Arrival Date (yyyymmdd): 19870421
Port of Arrival: NAHA,OKINAWA
Geodetic Datum/Position: SATELLITE,RADAR,LORAN-A HIBRID NAV.
Bathymetry Instrumentation: 3.5KHZ/12KHZ
Magnetics Instrumentation: EG&G
Additional Forms of Magnetics Data: 1MIN OR 30SEC INTERVAL SAMPLING
Seismic Instrumentation: 3.5HHZ/12KHZ ,SPARKER(NEC)
Topmost Latitude of Survey: +27
Bottommost Latitude: +23
Leftmost Longitude: +123
Rightmost Longitude: +128
General Digitizing Rate of Bathymetry: 282
General Digitizing Rate of Magnetics: 046
Additional Documentation: COMPILED BY OSHIDA,ATSUSHI KAWABATA,KAZUHIKO, OLD NGDC:56160002
Number of Data Records: 350
Min/Max Data Record:
Date: 1987 04 15
Latitude: +23.61259
Longitude: +123.81840
Bathymetry, Corrected Depth: 66.0
Magnetics Total Field, 1st Sensor: 440191
Magnetics Residual Field: -02454
Min/Max Data Record:
Date: 1987 04 21
Latitude: +26.25402
Longitude: +127.63139
Bathymetry, Corrected Depth: 3331.0
Magnetics Total Field, 1st Sensor: 444569
Magnetics Residual Field: +02847