Identification_Information: Citation: Citation_Information: Originator: Joyce Miller Publication_Date: 20060907 Title: Reson 8101ER Multibeam Sonar Data from Cruise AHI0402 collected around Tutuila, Ofu, Olosega, and Ta'u Islands, Territory of American Samoa. Geospatial_Data_Presentation_Form: Generic Sensor Format (GSF) digital data Online_Linkage: ftp://ftp.soest.hawaii.edu/pibhmc Description: Abstract: Abstract: Reson 8101ER multibeam Data were collected from 30 January and March 12, 2004, aboard NOAA Survey Launch Acoustic Habitat Investigator (AHI) at Tutuila, Ofu, Olosega, and Ta'u Islands in the Territory of American Samoa during cruise AHI0402. The data were logged into datasets titled Manua and Tutuila. These multibeam data were collected using SAIC ISS-2000 software in the Generic Sensor Format and processed using SABER editing software. Sound velocity corrections from a Seabird SBE19 CTD sensor and motion corrections from a POS-MV vertical reference were applied to the data in real time. Predicted tides were applied to the data in real time. Horizontal accuracy is 20m (no differential GPS correctors applied), vertical accuracy is depth dependent (~1% of water depth), WGS84 datum. These data are not to be used for navigation. Depths mapped range from 10 - 300 m. The AHI was deployed from the NOAA Ship Oscar E. Sette and surveyed independently during ship operations in other locations in American Samoa. The multibeam bathymetric data in generic sensor format from AHI0402 were submitted to NOAA's National Geophysical Data Center (NGDC) in Boulder, CO, for distribution in 2005. Purpose: The data were collected in support of Coral Reef Conservation Program goals to map all shallow (0-30 m)coral reefs in US Pacific waters and priority moderate (> 30 m) depth areas by 2009. The data are being used to provide bathymetric and backscatter data for previously unmapped areas; in support of ecosystem management requirements for benthic habitat mapping and location of Essential Fish Habitat; and to study the geologic features of the area. Supplemental_Information: Data were collected aboard the R/V AHI (Acoustic Habitat Investigator), a 25’ survey launch owned and operated by the NOAA Pacific Islands Fisheries Science Center in Honolulu, HI. The R/V AHI’s survey sensors include a 240 kHz RESON 8101-ER sonar providing bathymetry and imagery data, a TSS/Applanix POS/MV Model 320 which measures position, velocity, attitude and heading, and a Seabird SBE 19 CTD used to measure sound velocity profiles. Equipment serial numbers and software versions are as follows: RESON 8101-ER multibeam echosounder DOC inventory #: CD0000537418 Firmware, dry: 8101-2.07-2D4D Firmware, wet: 8101-1.06-2F6B POS/MV Model 320, version 3 DOC inventory #: CD0000476647 PCS serial #: 474 IMU serial #: 203 Controller software: v 1.0.5.0 Seabird SBE19 CTD: Serial #: 3029 R/V AHI Lever Arm Distances and Alignment Offsets The R/V AHI Reference Point (RP) is defined to be the intersection of the vessel's centerline, the cabin deck and the bulkhead immediately aft of the transducer. This is marked by a punch in the deck weld at that location. Positive X means the point is forward of the RP, positive Y means the point is to starboard of the RP, positive Z means the point is below the RP. The loaded waterline is defined as the intersection of the vessel’s performance wing with the hull at the transom. Antenna Baseline Distance, m: 1.229 Transducer depth below waterline, m 0.62 RP to IMU 0.80 0.00 0.08 RP to Primary GPS Antenna -3.55 -0.61 -1.88 RP to Vessel 0.16 0.00 0.77 RP to Sensor 1(MB transducer) 0.16 0.00 0.77 RP to Sensor 2 0 0 0 RP to Aux. GPS Antenna 0 0 0 RP to Heave lever arm(deg) -0.67 0.00 0.00 IMU rotation Ref. Frame, deg 0 0 0 Sensor 1 rotation Ref. Frame, deg 0 0 0 Sensor 2 rotation Ref. Frame, deg 0 0 0 Roll offset: +0.5 deg Pitch offset: 0.0 deg Gyro offset: 0.0 deg Time_Period_of_Content: Time_Period_Information: Range of Dates/Times: Beginning_Date: 20040130 Ending_Date: 20040312 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -170.874722 East_Bounding_Coordinate: -169.411869 North_Bounding_Coordinate: -14.133505 South_Bounding_Coordinate: -14.383933 Keywords: Theme: Theme_Keyword_Thesaurus: CoRIS Theme Thesaurus Version 1.0 Theme_Keyword: EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry Place: Place_Keyword_Thesaurus: None Place_Keyword: Ofu Island Place_Keyword: Olosega Island Place_Keyword: Ta'u Island Place_Keyword: Manu’a Islands Place_Keyword: Tutuila Place_Keyword: American Samoa Access_Constraints: None Use_Constraints: These data are NOT TO BE USED FOR NAVIGATION. Please acknowledge the NOAA Coral Reef Ecosystem Division, Pacific Islands Fisheries Science Center as the source of this information. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Benthic Habitat Mapping Group, Coral Reef Ecosystem Division, PIFSC,NOAA Contact_Person: Joyce Miller Contact_Address: Address_Type: mailing and physical address Address: 1125B Ala Moana Blvd City: Honolulu State_or_Province: HI Postal_Code: 96814 Country: USA Contact_Voice_Telephone: 808-956-5239 Contact_Electronic_Mail_Address: joyce.miller@noaa.gov Browse_Graphic: Browse_Graphic_File_Name: None Browse_Graphic_File_Description: None Browse_Graphic_File_Type: None Data_Set_Credit: Benthic Habitat Mapping Group, Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), NOAA Native_Data_Set_Environment: Generic Sensor Format multibeam data processed with SAIC SABER processing software on LINUX operating system computers Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Horizontal accuracy is ~20 m as data were collected using GPS with no differential corrections. Vertical accuracy of multibeam data is estimated at 1% of water depth; predicted tidal corrections were applied. Logical_Consistency_Report: These data are believed to be logically consistent though no tests were performed Completeness_Report: Varies Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Variable Quantitative_Horizontal_Positional_Accuracy_Assessment: Horizontal_Positional_Accuracy_Value: 20 Horizontal_Positional_Accuracy_Explanation: Multibeam sonar data. No DGPS corrections applied; 20 m accuracy Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Variable Quantitative_Vertical_Positional_Accuracy_Assessment: Vertical_Positional_Accuracy_Value: 1 Vertical_Positional_Accuracy_Explanation: Accuracy varies with water depth. Predicted tides for Pago Pago, American Samoa, were applied to the data in real time. SAIC's ISS2000 and SABER software were used to produce predicted tide files for each tide zone. Multibeam data vertical accuracy is ~1% of water depth. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Joyce E. Miller, Coral Reef Ecosystem Division, NOAA Pacific Islands Fisheries Science Center Publication_Date: 200609 Title: Reson 8101ER multibeam bathymetric data Type_of_Source_Media: Digital data Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 200304 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Reson 8101ER Source_Contribution: Reson 8101ER (240 kHz) bathymetry and imagery data were collected in depths of ~10-300 m. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Benthic Habitat Mapping Group, CRED, PIFSC, NOAA Contact_Person: Joyce E. Miller Contact_Position: Oceanographer Contact_Address: Address_Type: mailing and physical address Address: 1125 'B' Ala Moana Blvd City: Honolulu State_or_Province: Hawaii Postal_Code: 96814 Country: USA Contact_Voice_Telephone: 808-956-5239 Contact_Electronic_Mail_Address: joyce.miller@noaa.gov Resource_Description: Reson 8101ER Multibeam Sonar Data from Cruise AHI0402 (R/V AHI) Distribution_Liability: These data are not to be used for navigational purposes. NOAA makes no warranty regarding these data, expressed or implied, nor does the fact of distribution constitute such a warranty. NOAA cannot assume liability for any damages caused by any errors or omissions in these data, nor as a result of the failure of these data to function on a particular system. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: Generic Sensor Format, as described in http://www.ldeo.columbia.edu/res/pi/MB-System/formatdoc/gsf_spec.pdf Transfer_Size: Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: Fees: None Metadata_Reference_Information: Metadata_Date: 200609 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Coral Reef Ecosystem Division, NOAA Pacific Islands Fisheries Science Center Contact_Person: Joyce E. Miller Contact_Address: Address_Type: Kewalo Research Facility, 1125B Ala Moana Blvd City: Honolulu State_or_Province: Hawaii Postal_Code: 96814 Contact_Voice_Telephone: (808) 956-5239 Contact_Facsimile_Telephone: (808) 983-3730 Contact_Electronic_Mail_Address: Joyce.Miller@noaa.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: Universal time Metadata_Access_Constraints: None Metadata_Use_Constraints: None