Simrad EM-3000 Multibeam Bathymetry Grid, National Park of American Samoa (Tutuila)

Table of Contents



IDENTIFICATION_INFORMATION

Citation: Citation_Information: Originator: Brian Donahue, Univ. of S. Florida Originator: Dawn Wright Oregon St. Publication_Date: 20010805 Title: Simrad EM-3000 Multibeam Bathymetry Grid, National Park of American Samoa (Tutuila) (shifted) Edition: 1 Geospatial_Data_Presentation_Form: Map Publication_Information: Publication_Place: Tutuila, American Samoa Publisher: Fagatele Bay National Marine Sanctuary Office Other_Citation_Details: Online_Linkage: HTTP://dusk.geo.orst.edu/djl/samoa Larger_Work_Citation: Citation_Information: Originator: NOAA National Ocean Service (NOS) Special Projects Publication_Date: same as above Title: same as above Publication_Information: Publication_Place: same as above Publisher: same as above Online_Linkage: same as above Description: Abstract: This is a 2-m bathymetric grid of high-resolution, shallow water multibeam echo-soundings gathered by the Kongsberg Simrad EM-3000 system on a boat owned by the America Samoa Government (ASG), Dept. of Marine & Wildlife Resources (DMWR). Simrad EM-3000 is a 300 kHz system that fans out up to 121 beams at a 130 deg. angle, yielding swaths that are up to 4 times the water depth. The system can capture depths the 3-150 m range at survey speeds of 3-12 knots. With differential GPS, the system is capable of centimeter resolution with an accuracy of 10-15 cm. Grid size spacing may be 30 cm to 15 m for depths in the 3-150 m range. Xyz data from cleaned, tide-corrected soundings were gridded in MbSystem and then converted to an ArcInfo grid with ArcGMT. Grid spacing is 2-m, accuracy is ~24 m, coordinates decimal degrees, WGS84 datum. Differential corrections not applied. Purpose: This grid is a base layer for the purposes of visual overlay and comparison with other data sets in the Fagatele National Marine Sanctuary and subsequent spatial analyses Supplemental_Information: Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20010510 Ending_Date: 20010520 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -170.731 East_Bounding_Coordinate: -170.672 North_Bounding_Coordinate: -14.2268 South_Bounding_Coordinate: -14.2783 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: bathymetry Theme_Keyword: echosounding Theme_Keyword: grid Theme_Keyword: multibeam Theme_Keyword: seafloor Theme_Keyword: base layer Place: Place_Keyword_Thesaurus: None Place_Keyword: SW Pacific Place_Keyword: Samoa Place_Keyword: American Samoa Place_Keyword: Tutuila Place_Keyword: island Place_Keyword: Pacific islands GIS Access_Constraints: none Use_Constraints: NOT for navigational purposes!!! Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Fagatele Bay National Marine Sanctuary Contact_Person: Dawn Wright Contact_Position: collaborator Contact_Address: Address_Type: mailing and physical address Address: 104 Wilkinson Hall, Oregon State University Geosciences City: Corvallis State_or_Province: OR Postal_Code: 97331-5506 Country: USA Contact_Voice_Telephone: 541-737-1229 Contact_Facsimile_Telephone: 541-737-1200 Contact_Electronic_Mail_Address: dawn@dusk.geo.orst.edu Hours_of_Service: noon to 5 (email is best) Native_Data_Set_Environment: ESRI Grid format c:\workspace\pago_shift Top

DATA_QUALITY_INFORMATION

Attribute_Accuracy: Attribute_Accuracy_Report: Depth soundings have an accuracy of ~24 m (i.e., points fall within a circle of radius 24 m). 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. Logical_Consistency_Report: These data are believed to be logically consistent, though no tests were performed. Completeness_Report: 95% coverage of the harbor Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: 24 m Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: 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. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Brian Donahue, Univ. of S. Florida Originator: Dawn Wright Oregon St. Publication_Date: 20010805 Title: Simrad EM-3000 Multibeam Bathymetry Grid Edition: 1 Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Tutuila, American Samoa Publisher: Fagatele Bay National Marine Sanctuary Office Other_Citation_Details: Online_Linkage: HTTP://dusk.geo.orst.edu/djl/samoa Larger_Work_Citation: Citation_Information: Originator: NOAA National Ocean Service (NOS) Special Projects Publication_Date: same as above Title: same as above Publication_Information: Publication_Place: same as above Publisher: same as above Online_Linkage: same as above Source_Scale_Denominator: Type_of_Source_Media: Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: Ending_Date: Source_Currentness_Reference: Source_Citation_Abbreviation: Source_Contribution: Source_Information: Source_Citation: Citation_Information: Originator: Brian Donahue, Univ. of S. Florida Originator: Dawn Wright Oregon St. Publication_Date: 20010805 Title: Simrad EM-3000 Multibeam Bathymetry Grid Edition: 1 Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Tutuila, American Samoa Publisher: Fagatele Bay National Marine Sanctuary Office Other_Citation_Details: Online_Linkage: HTTP://dusk.geo.orst.edu/djl/samoa Larger_Work_Citation: Citation_Information: Originator: NOAA National Ocean Service (NOS) Special Projects Publication_Date: same as above Title: same as above Publication_Information: Publication_Place: same as above Publisher: same as above Online_Linkage: same as above Source_Scale_Denominator: Type_of_Source_Media: Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: Ending_Date: Source_Currentness_Reference: Source_Citation_Abbreviation: Source_Contribution: Source_Information: Source_Citation: Citation_Information: Originator: Brian Donahue, Univ. of S. Florida Originator: Dawn Wright Oregon St. Publication_Date: 20010805 Title: Simrad EM-3000 Multibeam Bathymetry Grid Edition: 1 Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Tutuila, American Samoa Publisher: Fagatele Bay National Marine Sanctuary Office Other_Citation_Details: Online_Linkage: HTTP://dusk.geo.orst.edu/djl/samoa Larger_Work_Citation: Citation_Information: Originator: NOAA National Ocean Service (NOS) Special Projects Publication_Date: same as above Title: same as above Publication_Information: Publication_Place: same as above Publisher: same as above Online_Linkage: same as above Source_Scale_Denominator: Type_of_Source_Media: Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: Ending_Date: Source_Currentness_Reference: Source_Citation_Abbreviation: Source_Contribution: Source_Information: Source_Citation: Citation_Information: Originator: Brian Donahue, Univ. of S. Florida Originator: Dawn Wright Oregon St. Publication_Date: 20010805 Title: Simrad EM-3000 Multibeam Bathymetry Grid Edition: 1 Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Tutuila, American Samoa Publisher: Fagatele Bay National Marine Sanctuary Office Other_Citation_Details: Online_Linkage: HTTP://dusk.geo.orst.edu/djl/samoa Larger_Work_Citation: Citation_Information: Originator: NOAA National Ocean Service (NOS) Special Projects Publication_Date: same as above Title: same as above Publication_Information: Publication_Place: same as above Publisher: same as above Online_Linkage: same as above Source_Scale_Denominator: Type_of_Source_Media: Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: Ending_Date: Source_Currentness_Reference: Source_Citation_Abbreviation: Source_Contribution: Source_Information: Source_Citation: Citation_Information: Originator: Brian Donahue, Univ. of S. Florida Originator: Dawn Wright Oregon St. Publication_Date: 20010805 Title: Simrad EM-3000 Multibeam Bathymetry Grid Edition: 1 Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Tutuila, American Samoa Publisher: Fagatele Bay National Marine Sanctuary Office Other_Citation_Details: Online_Linkage: HTTP://dusk.geo.orst.edu/djl/samoa Larger_Work_Citation: Citation_Information: Originator: NOAA National Ocean Service (NOS) Special Projects Publication_Date: same as above Title: same as above Publication_Information: Publication_Place: same as above Publisher: same as above Online_Linkage: same as above Source_Scale_Denominator: Type_of_Source_Media: Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: Ending_Date: Source_Currentness_Reference: Source_Citation_Abbreviation: Source_Contribution: Source_Information: Source_Citation: Citation_Information: Originator: Brian Donahue, Univ. of S. Florida Originator: Dawn Wright Oregon St. Publication_Date: 20010805 Title: Simrad EM-3000 Multibeam Bathymetry Grid, Pago Pago Harbor, American Samoa Edition: 1 Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Tutuila, American Samoa Publisher: Fagatele Bay National Marine Sanctuary Office Other_Citation_Details: Online_Linkage: HTTP://dusk.geo.orst.edu/djl/samoa Larger_Work_Citation: Citation_Information: Originator: NOAA National Ocean Service (NOS) Special Projects Publication_Date: same as above Title: same as above Publication_Information: Publication_Place: same as above Publisher: same as above Online_Linkage: same as above Source_Scale_Denominator: Type_of_Source_Media: Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: Ending_Date: Source_Currentness_Reference: Source_Citation_Abbreviation: Source_Contribution: Source_Information: Source_Citation: Citation_Information: Originator: Brian Donahue, Univ. of S. Florida Originator: Dawn Wright Oregon St. Publication_Date: 20010805 Title: Simrad EM-3000 Multibeam Bathymetry Grid (shifted), Pago Pago Harbor, American Samoa Edition: 1 Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Tutuila, American Samoa Publisher: Fagatele Bay National Marine Sanctuary Office Other_Citation_Details: Online_Linkage: HTTP://dusk.geo.orst.edu/djl/samoa Larger_Work_Citation: Citation_Information: Originator: NOAA National Ocean Service (NOS) Special Projects Publication_Date: same as above Title: same as above Publication_Information: Publication_Place: same as above Publisher: same as above Online_Linkage: same as above Source_Scale_Denominator: Type_of_Source_Media: Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: Ending_Date: Source_Currentness_Reference: Source_Citation_Abbreviation: Source_Contribution: Process_Step: Process_Description: Initial parameters for collection and processing of multibeam data collection and processing: pitch: 3.46 roll: -0.8 time: 0.2 Basic GIS processing steps: * stripped headers off of Simrad xyz files provided by Brian Unix: sed -e '1,15d' ) * gridded in Unix MbSystem (e.g. for a 5-m grid, mbgrid -Idatalist -E5/5/meters -R-170.698/-170.666/-14.283/-14.269 -Opago5m -N -A1 -V )
mbgrid -Idatalist -E2/2/meters -R-170.7308/-170.6723/-14.2783/-14.2268 -Onatpark 2m -N -A1 -C5 -V

MbGrid Parameters

* then convert to ArcInfo grid with ArcGMT *

Source_Used_Citation_Abbreviation: Process_Date: 20010730 Source_Produced_Citation_Abbreviation: Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Organization: Fagatele Bay National Marine Sanctuary Contact_Person: Dawn Wright Contact_Position: collaborator Contact_Address: Address_Type: mailing and physical address Address: 104 Wilkinson Hall, Oregon State University Geosciences City: Corvallis State_or_Province: OR Postal_Code: 97331-5506 Country: USA Contact_Voice_Telephone: 541-737-1229 Contact_Facsimile_Telephone: 541-737-1200 Contact_Electronic_Mail_Address: dawn@dusk.geo.orst.edu Hours_of_Service: noon to 5 (email is best) Top


SPATIAL_DATA_ORGANIZATION_INFORMATION

Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Grid Cell Row_Count: 2850 Column_Count: 3157 Top

SPATIAL_REFERENCE_INFORMATION

Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 2 m Longitude_Resolution: 2 m Geographic_Coordinate_Units: Decimal Degrees Geodetic_Model: Horizontal_Datum_Name: WGS84 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6,378,137 Denominator_of_Flattening_Ratio: 298.257 Top

ENTITY_AND_ATTRIBUTE_INFORMATION

Detailed_Description: Entity_Type: Entity_Type_Label: tutuila_geo.vat Entity_Type_Definition: GRID Value Attribute Table Entity_Type_Definition_Source: None Attribute: Attribute_Label: Value Attribute_Definition: Pixel value Attribute_Definition_Source: Software generated Attribute_Domain_Values: Unrepresentable_Domain: Software computed Attribute: Attribute_Label: Count Attribute_Definition: Number of pixel with same value Attribute_Definition_Source: Software generated Attribute_Domain_Values: Unrepresentable_Domain: Software computed Overview_Description: Entity_and_Attribute_Overview: Entity_and_Attribute_Detail_Citation: Top

DISTRIBUTION_INFORMATION

Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Fagatele Bay National Marine Sanctuary Contact_Person: Dawn Wright Contact_Position: collaborator Contact_Address: Address_Type: mailing and physical address Address: 104 Wilkinson Hall, Oregon State University Geosciences City: Corvallis State_or_Province: OR Postal_Code: 97331-5506 Country: USA Contact_Voice_Telephone: 541-737-1229 Contact_Facsimile_Telephone: 541-737-1200 Contact_Electronic_Mail_Address: dawn@dusk.geo.orst.edu Hours_of_Service: noon to 5 (email is best) Resource_Description: Distribution_Liability: NOT for navigational purposes!!! Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name:ArcInfo Interchange Export (*.e00) files Digital_Transfer_Option: Offline_Option: Offline_Media: none Recording_Format: none Compatibility_Information: ArcInfo, ArcView, ArcExplorer Fees: none Ordering_Instructions: http: HTTP://dusk.geo.orst.edu/djl/samoa Top

METADATA_REFERENCE_INFORMATION

Metadata_Date: 20010805 Metadata_Review_Date: 20010805 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Fagatele Bay National Marine Sanctuary Contact_Person: Dawn Wright Contact_Position: collaborator Contact_Address: Address_Type: Mailing and physical address Address: 104 Wilkinson Hall, Oregon State University Geosciences City: Corvallis State_or_Province: OR Postal_Code: 97331-5506 Country: USA Contact_Voice_Telephone: 541-737-1229 Contact_Facsimile_Telephone: 541-737-1200 Contact_Electronic_Mail_Address: dawn@dusk.geo.orst.edu Hours_of_Service: noon to 5 (email is best) Metadata_Standard_Name: FGDC CSDGM Metadata_Standard_Version: FGDC-STD-001-1998 Top