IDENTIFICATION_INFORMATION
Citation: Citation_Information: Originator: Brian Donahue, Univ. of S. Florida Publication_Date: 20020105 Title: Simrad EM-120 Multibeam Bathymetry Grid, Tutuila Flanks, 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: article
Online_Linkage: HTTP://dusk.geo.orst.edu/djl/samoa Larger_Work_Citation: Citation_Information: Originator: University of South Florida 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 bathymetric grid from data collected with the Kongsberg Simrad EM 120 systems aboard the R/V Revelle, Leg 10 of the Drift Expedition (Cruise DRFT10RR), Pago Pago to Pago Pago, March 7-8, 2002 (Chief Scientist, David Naar, NSF/NOAA funding to Naar and Wright). This one day cruise (along with other multibeam data mined from the archives) enabled complete coverage of the mid to deeper water flanks of Tutuila. The entire north flank of the island and some multibeam data gaps along the southern flank have been mapped, revealing some new volcanic cones (at least 6 off the northern flank), as well as the shape (and more accurate location) of charted (but unmapped) banks.The data were post-processed by Brian Donahue using the Kongsberg Simrad Postprocessing software package Neptune. The geodetic parameters that were used are as follows:
Datum: WGS84
Half axis: 6378137.0000000
Flattening: 1/298.25722356300
Coordinate system: Latitude/Longitude (Decimal)
The data were processed at various scales. The end of the name in the fledermaus files designates the grid cell size for each image. For example the Taema Bank folder contains taema_bank_1m, this means that the grid cell size for this image is 1 meter. Bathymetric post-processing includes: tidal correction followed by analysis of the noise level and standard deviation. Correcting for tidal variation was completed by using verified data from the NOAA tide station at Pago Pago harbor (1770000) Following the tide correction, data that exceeded the second standard deviation of surrounding data and those that exceeded two percent of the noise limit were flagged as not valid. The remaining data were exported as XYZ data containing all the points that were valid after post- processing. The XYZ data was read into IVS Fledermaus software for presentation and analysis purposes. From the Fledermaus software the data was then exported into an acceptable format for ArcView. The ArcView format could then be read into Arc 8. After processing the raw, processed, and XYZ files were compressed using WinZip and are archived at the University of South Florida's College of Marine Science.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 GIS Archive 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: -171.428 East_Bounding_Coordinate: -170.241 North_Bounding_Coordinate: -13.178 South_Bounding_Coordinate: -15.143 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: 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). 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: 200 m Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Brian Donahue, Univ. of S. Florida Originator: Dawn Wright Oregon St. Publication_Date: 20030105 Title: Simrad EM-120 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: 20030105 Title: Simrad EM-120 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: 20030105 Title: Simrad EM-120 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: 20030105 Title: Simrad EM-120 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: 20030105 Title: Simrad EM-120 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: 20030105 Title: Simrad EM-120 Multibeam Bathymetry Grid, Fagaitua Bay, 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: 20030105 Title: Simrad EM-120 Multibeam Bathymetry Grid, Fagaitua Bay, 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: The data were post-processed by Brian Donahue using the Kongsberg Simrad Postprocessing software package Neptune. The geodetic parameters that were used are as follows:Datum: WGS84
Half axis: 6378137.0000000
Flattening: 1/298.25722356300
Coordinate system: Latitude/Longitude (Decimal)
The data were processed at various scales. The end of the name in the fledermaus files designates the grid cell size for each image. For example the Taema Bank folder contains taema_bank_1m, this means that the grid cell size for this image is 1 meter. Bathymetric post-processing includes: tidal correction followed by analysis of the noise level and standard deviation. Correcting for tidal variation was completed by using verified data from the NOAA tide station at Pago Pago harbor (1770000) Following the tide correction, data that exceeded the second standard deviation of surrounding data and those that exceeded two percent of the noise limit were flagged as not valid. The remaining data were exported as XYZ data containing all the points that were valid after post- processing. The XYZ data was read into IVS Fledermaus software for presentation and analysis purposes. From the Fledermaus software the data was then exported into an acceptable format for ArcView. The ArcView format could then be read into Arc 8. After processing the raw, processed, and XYZ files were compressed using WinZip and are archived at the University of South Florida's College of Marine Science.
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: 1527 Column_Count: 1457 Top
SPATIAL_REFERENCE_INFORMATION
Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 200 m Longitude_Resolution: 200 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: 20030105 Metadata_Review_Date: 20030105 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