Identification_Information: Citation: Citation_Information: Originator: Joyce E. Miller Publication_Date: 20060907 Title: Reson 8101ER Multibeam Sonar Data from Cruise AHI-06-01 Geospatial_Data_Presentation_Form: Generic Sensor Format (GSF) digital data Description: Abstract: Reson 8101ER multibeam Data were collected from 15 Jan - 6 Feb aboard NOAA Survey Launch Acoustic Habitat Investigator (AHI) at Johnston Island, Howland Island, and Baker Island in the Central Pacific during cruise AHI-06-01. 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: for Johnston Island predicted tides from the NOS CO-OPS web site were used; for Baker and Howland Islands predicted tides based upon the Honolulu tide station (1612340) with a time corrector of 3 hrs 48 min and a range ratio of 3.91. 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 Hi'ialakai and concurrent mapping was done using Simrad EM300 and EM3002D sonars aboard the ship; metadata for HI- 06-01 are submitted separately. 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 8 m (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 which measures bathymetry and acoustic backscatter imagery, a TSS/Applanix POS/MV Model 320 which measures time, position, velocity, attitude and heading, and a Seabird SBE 19 CTD used to measure sound velocity profiles. The AHI's equipment serial numbers, software versions and sensor configuration settings are as follows: RESON 8101-ER multibeam echosounder Transducer serial #: 201004 Firmware, dry: 8101-2.07-2D4D Firmware, wet: 8101-1.06-2F6B R/V AHI POS/MV Model 320, version 3 PCS serial #: 474 IMU serial #: 203 Controller software: v 2.1 PCS Firmware: 2.16 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. POS/MV Settings: RP to IMU, m 0.80 0.00 0.08 RP to Primary GPS(port),m 0.85 -0.50 -2.29 RP to Vessel, m 0.16 0.00 0.77 IMU w.r.t. Ref. Frame, deg 0.00 0.00 0.00 RP to Heave lever arm, m -0.67 0.00 0.00 RP to Sensor 1(MB transducer), m 0.16 0.00 0.77 RP to Sensor 2 0 0 0 Sensor 1 rotation Ref. Frame, deg 0 0 0 Sensor 2 rotation Ref. Frame, deg 0 0 0 Antenna Baseline Distance: 1.229 ISS2000 Settings for RESON DTC: Roll Bias, deg 0.15 Pitch Bias, deg 0.025 Gyro Bias, deg 0.0 Transducer depth, m 0.62 Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20060112 Ending_Date: 20060204 Currentness_Reference: ground condition Status: Progress: In Work Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -176.736757 East_Bounding_Coordinate: -169.261657 North_Bounding_Coordinate: 16.889301 South_Bounding_Coordinate: 0.068122 Keywords: Theme: Theme_Keyword_Thesaurus: CoRIS Theme Thesaurus Version 1.0 Theme_Keyword: EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Bathymetry Theme_Keyword: Multibeam sonar Place: Place_Keyword_Thesaurus: None Place_Keyword: Johnston Island Place_Keyword: Howland Island Place_Keyword: Baker Island Place_Keyword: Pacific Remote Island Areas Place_Keyword: Islands Place: Place_Keyword_Thesaurus: CoRIS Place Thesaurus Version 1.0 Place_Keyword: OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Pacific Remote Island Areas > Johnston, Howland, Baker Islands Place_Keyword: COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu Access_Constraints: None. Use_Constraints: These data are NOT TO BE USED FOR NAVIGATION Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Joyce E. Miller Contact_Organization: Coral Reef Ecosystem Division, Pacific Islands Fisheries Science Center Contact_Position: Oceanographer Contact_Address: Address_Type: mailing and physical address Address: Kewalo Research Facility, 1125B Ala Moana Blvd City: Honolulu State_or_Province: Hawaii Postal_Code: 96814 Country: USA Contact_Voice_Telephone: (808) 956-5239 Contact_Facsimile_Telephone: (808) 983-3730 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: Joyce E. Miller Coral Reef Ecosystem Division, NOAA Pacific Islands Fisheries Science Center 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 were applied to the data in real time: for Johnston Island predicted tides from the NOS CO-OPS web site were used; for Baker and Howland Islands predicted tides based upon the Honolulu tide station (1612340) with a time corrector of 3 hrs 48 min and a range ratio of 3.91. 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: 200607 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: 2006 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 ~10-250 m. Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Joyce E. Miller Contact_Organization: Coral Reef Ecosystem Division, NOAA Pacific Islands Fisheries Science Center Contact_Position: Oceanographer Contact_Address: Address_Type: mailing and physical address Address: Kewalo Research Facility, 1125B Ala Moana Blvd City: Honolulu State_or_Province: Hawaii Postal_Code: 96814 Country: USA Contact_Voice_Telephone: (808) 956-5239 Contact_Facsimile_Telephone: (808) 983-3730 Contact_Electronic_Mail_Address: Joyce.Miller@noaa.gov Resource_Description: Reson 8101ER Multibeam Sonar Data from Cruise AHI-06-01 (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: 20060907 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