Survey Identifier: IG2407
Format Acronym: MGD77
Data Center File Number: 10020020
Parameters Surveyed Code: 55133
File Creation Date (yyyymmdd): 19880609
Source Institution: UT INSTITUTE FOR GEOPHYSICS
Country: U.S.A.
Platform Name: R/V IDA GREEN
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): D. HOUSTON
Project: SURVEYS OF THE MIDDLE AMERICA TRENCH-DSDP
Funding: IDOE/IPOD-NSF
Survey Departure Date (yyyymmdd): 19770719
Port of Departure: PUNTA ARENAS COSTA RICA
Survey Arrival Date (yyyymmdd): 19770729
Port of Arrival: BALBOA PANAMA CANAL ZONE
Navigation Instrumentation: SATELLITE, DEAD RECKONING
Geodetic Datum/Position: SATELLITE, DEAD RECKONING
Bathymetry Instrumentation: 3.5 KHZ ECHOSOUNDER
Additional Forms of Bathymetric Data: ANALOG RECORDS, MICROFILM
Magnetics Instrumentation: PROTON PRECESSION MAGNETOMETER
Additional Forms of Magnetics Data: ANALOG CHART RECORD, 35MM MICROFILM
Seismic Instrumentation: 24CHAN-2293M 3-4 1500 CI AIR GUNS
Formats of Seismic Data: MYLAR, PAPER, NEGATIVE
Topmost Latitude of Survey: +13
Bottommost Latitude: +06
Leftmost Longitude: -088
Rightmost Longitude: -079
General Digitizing Rate of Bathymetry: 050
General Sampling Rate of Bathymetry: 1,1/SECOND
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: NONE
General Digitizing Rate of Magnetics: 050
Magnetic Sensor Tow Distance: 250.
Reference Field Code: 04
Reference Field: IGRF 75
Additional Documentation: MULTICHANNEL SEISMIC LINES ACQUIRED: NIC-1A THRU 1C; PN-2
Number of Data Records: 2756
Min/Max Data Record:
Date: 1977 07 19
Latitude: +6.97010
Longitude: -87.89830
Bathymetry, Corrected Depth: 28.0
Magnetics Total Field, 1st Sensor: 272550
Magnetics Residual Field: -94410
Min/Max Data Record:
Date: 1977 07 29
Latitude: +12.00830
Longitude: -79.45810
Bathymetry, Corrected Depth: 5400.0
Magnetics Total Field, 1st Sensor: 390140
Magnetics Residual Field: +15320