Originator: NOAA National Ocean Service (NOS) Special Projects
Publication_Date: same as above
Publication_Time: same as above
Title: same as above
Publication_Place: same as above
Publisher: same as above
Online_Linkage: same as above
This is a high-resolution (1m) bathymetric grid with negative z values. The data were collected by the USF Center for Coastal Ocean Mapping with the Kongsberg Simrad EM 3000 multibeam system (Co-chief Scientists, David Naar and Brian Donahue). An Applanix POSMV 320 V3 system was used for real-time positions and vessel attitude (heading, pitch, roll, and heave). An AML (Applied Microsystems LTD.) SV plus was used to measure sound velocities in the water column. The data were collected at Coconut Point on November 10th, 2002 aboard a Motor Vessel Lady Ana.
This grid is a base layer for the purposes of visual overlay and comparison with other data sets around Tutuila and subsequent spatial analyses.
Currentness_Reference: publication date
Maintenance_and_Update_Frequency: As needed
Theme_Keyword: base layer
Place_Keyword: SW Pacific
Place_Keyword: American Samoa
Place_Keyword: Pacific Islands GIS
Place_Keyword: Coconut Point
Use_Constraints: NOT for navigational purposes!!!
Contact_Person: Dawn Wright
Contact_Organization: Fagatele Bay National Marine Sanctuary
Address_Type: mailing and physical address
Address: 104 Wilkinson Hall, Oregon State University Geosciences
Soundings have been "cleaned" with a 2nd standard deviation filter to flag outliers (i.e., points beyond the 2nd standard deviation in Simrad bin stat post processing were flagged or removed). Tidal corrections: NOAA, verified, downloaded tide data, preliminary pressure water level data (N1) data are in meters above MLLW datum from station 1770000, Pago Pago, AS. Data have not yet been corrected with differential GPS.
These data are believed to be logically consistent, though no tests were performed.
Tidal corrections: NOAA, verified, downloaded tide data, preliminary pressure water level data (N1) data are in meters above MLLW datum from station 1770000, Pago Pago, AS.
Originator: Emily Lundblad, Oregon State Univ.
Originator: Brian Donahue, Univ. of S. Florida
Originator: Dawn Wright, Oregon State Univ.
Simrad EM-3000 Multibeam Bathymetry Grid (1m), Coconut Point, American Samoa
Publication_Place: Tutuila, American Samoa
Publisher: Fagatele Bay National Marine Sanctuary Office