Survey Identifier: HM940415
Format Acronym: MGD77
Data Center File Number: J1030029
Parameters Surveyed Code: 33513
File Creation Date (yyyymmdd): 19970324
Source Institution: HYDROGRAPHIC DEPARTMENT
Country: JAPAN
Platform Name: MEIYO
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): ISAMU OKAZAKI
Project: EARTHQUAKE PREDICTION
Funding: HYDROGRAPHIC DEP
Survey Departure Date (yyyymmdd): 19940415
Port of Departure: TOKYO
Survey Arrival Date (yyyymmdd): 19940428
Port of Arrival: HATINOHE
Navigation Instrumentation: GPS/LORANC
Geodetic Datum/Position: GPS/LORANC
Gravity Instrumentation: KSS30 TYPE, SENSOR GSS-30-01
Additional Forms of Gravity Data: GRAVITY ANOMALY CHART
Topmost Latitude of Survey: +41
Bottommost Latitude: +38
Leftmost Longitude: +142
Rightmost Longitude: +145
Bathymetric Datum Code: 0
General Digitizing Rate of Magnetics: 000
General Sampling Rate of Magnetics: 00
Magnetic Sensor Tow Distance: 0000
General Digitizing Rate of Gravity: 010
General Sampling Rate of Gravity: 05
Theoretical Gravity Formula Code: 3
Theoretical Gravity Formula: IAG SYSTEM 1967
Reference System: SYSTEM JGSN 75
Corrections Applied: DRIFT , ETOVOS CORRECTION
Departure Base Station Gravity: 9797714
Departure Base Station Description: TOKYO,PIER FOR MEIYO
Arrival Base Station Gravity: 9797712
Arrival Base Station Description: TOKYO,PIER FOR MEIYO
Additional Documentation: CRUISE NAME = JAPAN TRENCH
Number of Data Records: 8138
Min/Max Data Record:
Date: 1994 04 16
Latitude: +38.82188
Longitude: +142.91825
Observed Gravity: 9799131
Free-Air Anomaly: -1528
Min/Max Data Record:
Date: 1994 04 30
Latitude: +40.35157
Longitude: +144.03273
Observed Gravity: 9801913
Free-Air Anomaly: +0103