Survey Identifier: 1986N1A
Format Acronym: MGD77
Data Center File Number: 06990015
Parameters Surveyed Code: 51111
File Creation Date (yyyymmdd): 19890626
Source Institution: U.S. GEOLOGICAL SURVEY, MARINE GEOLOGY
Country: UNITED STATES
Platform Name: ACADIANA, GEODETIC
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): WILLIAMS, S.J. USGS,RESTON VA
Project: LOUISIANA COASTAL EROSION PROJECT
Funding: USGS
Survey Departure Date (yyyymmdd): 19860601
Port of Departure: COCODRIE, LA., USA
Survey Arrival Date (yyyymmdd): 19860602
Port of Arrival: COCODRIE, LA, USA
Navigation Instrumentation: SERCEL "SYLEDIS" SEE USGS REPT OFR89-150
Geodetic Datum/Position: UHF RADIO POSITIONG, SEE USGS REPT.
Bathymetry Instrumentation: FATHOMETER,210 KHZ DUAL FREQUENCY
Additional Forms of Bathymetric Data: CHARTS
Topmost Latitude of Survey: +30
Bottommost Latitude: +29
Leftmost Longitude: -091
Rightmost Longitude: -090
General Digitizing Rate of Bathymetry: 01
General Sampling Rate of Bathymetry: UNCL
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 02
Interpolation Scheme: NOT INTERPOLATED, SOUND VEL. BAR CHECK CALIBRATION
Additional Documentation: *** THIS FILE IS SECTION "1986N1A" - DATA IS DIVIDED INTO 11 SECTIONS. ***, TIMES ARE LINEAR INTERPOLATIONS USING START- AND END-OF-LINE TIMES FROM SHIP'S, LOG. DATA GRAPHICALLY EDITED FOR OBVIOUS SPIKES. FOR MORE INFORMATION ABOUT, THIS SURVEY AND A CONTOUR MAP OF THE DATA, SEE U. S. GEOLOGICAL SURVEY, OPEN-FILE REPORT 89-150. NGDC NOTE: NAVIGATION APPEARS SHAKEY; 1.5% OF RECS HAVE SPEEDS OVER 20 KNOTS
Number of Data Records: 2586
Min/Max Data Record:
Date: 1986 06 01
Latitude: +29.02226
Longitude: -90.79016
Bathymetry, 2- Way Traveltime: 000004
Bathymetry, Corrected Depth: 0.3
Min/Max Data Record:
Date: 1986 06 02
Latitude: +29.11211
Longitude: -90.68411
Bathymetry, 2- Way Traveltime: 000042
Bathymetry, Corrected Depth: 3.0