2006 Reson 8101ER Multibeam Sonar Data from Cruise AHI-06-02 - American Samoa

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator:
Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
Publication_Date: 20060907
Title:
2006 Reson 8101ER Multibeam Sonar Data from Cruise AHI-06-02 - American Samoa
Geospatial_Data_Presentation_Form: Generic Sensor Format (GSF) digital data
Online_Linkage: <http://www.soest.hawaii.edu/pibhmc/>
Description:
Abstract:
Reson 8101ER multibeam Data were collected in 10-13 Feb. and 18 Feb-13 Mar 2006 aboard NOAA Survey Launch Acoustic Habitat Investigator (AHI) in America Samoa at Swains Island, Tutuila and Rose Atoll during cruise AHI-06-02. These multibeam data were collected using SAIC ISS-2000 software in the Generic Sensor Format and processed using SABER 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: at Tutuila, Pago Pago (170000) predicted tides were used with no corrections; at Rose Atoll, Pago Pago tides were used with +0.1 hr time correction and a range ratio of 0.92; and at Swains Island, Pago Pago predicted tides were used with a -0.5 hr time correction and a 1.12 range ratio.

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 1 - 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-06-02 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 and 2.21* PCS Firmware: 2.16

Seabird SBE19 CTD: Serial #: 3029

*The AHI's POS/MV was moved from the launch to the ship each day during part of this cruise. On the evening of Feb 17th (local time) the ship's POS/MV started continually rebooting. With assistance from Applanix we determined that the problem was isolated to the PCS, the rack-mounted controller box. We moved the PCS from the AHI to the ship and were able to continue to survey. Because the IMU was not moved no recalibration was required. The PCS was moved between the ship and the AHI daily for several days, allowing the ship to survey at night and the AHI to survey during the day. The major aspect of the move was that the power supply for the IMU is not compatible between the ship and the AHI and had to be changed out each time the unit was moved. The settings for each vessel's configuration were saved to disk and reloaded at the beginning of each session. This continued until Feb 24th when the ship's replacement unit arrived. Another problem that came to light near this same time was that some times the POS/MV would provide two different date stamps for the data, the time reported on the screen did not agree with the one reported out the Ethernet data stream. When this was noticed on Feb 26th new firmware (v 2.21) was loaded immediately and corrected the problem.

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

Resource Description: Reson 8101ER Multibeam Sonar Data from Cruise AHI-06-02 (R/V AHI)

Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20060210
Ending_Date: 20060310
Currentness_Reference: ground condition
Status:
Progress: In Work
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -171.21919
East_Bounding_Coordinate: -168.057488
North_Bounding_Coordinate: -10.935262
South_Bounding_Coordinate: -14.633769
Keywords:
Theme:
Theme_Keyword_Thesaurus: CoRIS Discovery Thesaurus
Theme_Keyword: Geographic Information > Bathymetry
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: elevation
Theme_Keyword: 006
Theme:
Theme_Keyword_Thesaurus: CoRIS Theme Thesaurus
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: Swains Island
Place_Keyword: Tutuila
Place_Keyword: Rose Atoll
Place_Keyword: American Samoa
Place_Keyword: Islands
Place:
Place_Keyword_Thesaurus: CoRIS Place Thesaurus
Place_Keyword:
OCEAN BASIN > Pacific Ocean > American Samoa > Tutuila Island (14S170W0016)
Place_Keyword:
COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > Tutuila Island (14S170W0016)
Place_Keyword:
OCEAN BASIN > Pacific Ocean > American Samoa > American Samoa (14S170W0000)
Place_Keyword:
COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > American Samoa (14S170W0000)
Place_Keyword:
OCEAN BASIN > Pacific Ocean > American Samoa > Rose Atoll (14S168W0001)
Place_Keyword:
COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > Rose Atoll (14S168W0001)
Place_Keyword:
OCEAN BASIN > Pacific Ocean > American Samoa > Swains Atoll (11S171W0001)
Place_Keyword:
COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > Swains Atoll (11S171W0001)
Place:
Place_Keyword_Thesaurus: CoRIS Region
Place_Keyword: AmSam
Access_Constraints: None.
Use_Constraints: These data are NOT TO BE USED FOR NAVIGATION
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
Contact_Address:
Address_Type: mailing and physical address
Address: NOAA IRC
Address: NMFS/PIFSC/CRED
Address: 1845 WASP Blvd., Building 176
City: Honolulu
State_or_Province: HI
Postal_Code: 96818
Contact_Voice_Telephone: 808 725-5360
Contact_Facsimile_Telephone: 808 725-5429
Contact_Electronic_Mail_Address: nmfs.pic.credinfo@noaa.gov
Contact_Instructions: e-mail preferred
Data_Set_Credit:
Joyce E. Miller Coral Reef Ecosystem Division, NOAA Pacific Islands Fisheries Science Center
Security_Information:
Security_Classification_System: Not applicable
Security_Classification: Unclassified
Security_Handling_Description: Not applicable
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. Multibeam data vertical accuracy is ~1% of water depth. Predicted tides were applied to the data in real time: at Tutuila, Pago Pago (170000) predicted tides were used with no corrections; at Rose Atoll, Pago Pago tides were used with +0.1 hr time correction and a range ratio of 0.92; and at Swains Island, Pago Pago predicted tides were used with a -0.5 phr time correction and a 1.12 range ratio.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
Joyce E. Miller, Coral Reef Ecosystem Division, NOAA Pacific Islands Fisheries Science Center
Publication_Date: 20060907
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.
Process_Step:
Process_Description: None
Process_Date: Unknown

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
Contact_Address:
Address_Type: mailing and physical address
Address: NOAA IRC
Address: NMFS/PIFSC/CRED
Address: 1845 WASP Blvd., Building 176
City: Honolulu
State_or_Province: HI
Postal_Code: 96818
Contact_Voice_Telephone: 808 725-5360
Contact_Facsimile_Telephone: 808 725-5429
Contact_Electronic_Mail_Address: nmfs.pic.credinfo@noaa.gov
Contact_Instructions: e-mail preferred
Resource_Description: Downloadable Data
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.
Custom_Order_Process:
Please contact the Distributor (see above) for distribution options

These data are also archived through NOAA's National Geophysical Data Center at <http://www.ngdc.noaa.gov/mgg/bathymetry/multibeam.html>

Data Format - Generic Sensor Format, as described in <http://www.ldeo.columbia.edu/res/pi/MB-System/formatdoc/gsf_spec.pdf>


Metadata_Reference_Information:
Metadata_Date: 20140312
Metadata_Review_Date: 20110318
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
Contact_Address:
Address_Type: mailing and physical address
Address: NOAA IRC
Address: NMFS/PIFSC/CRED
Address: 1845 WASP Blvd., Building 176
City: Honolulu
State_or_Province: HI
Postal_Code: 96818
Contact_Voice_Telephone: 808 725-5360
Contact_Facsimile_Telephone: 808 725-5429
Contact_Electronic_Mail_Address: nmfs.pic.credinfo@noaa.gov
Contact_Instructions: e-mail preferred
Metadata_Standard_Name:
FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: Universal Time

CoRIS:
CoRIS_ID: 20090526035838
CoRIS_Children: None
CoRIS_Beginning_Date: 20060210
CoRIS_Ending_Date: 20060310
CoRIS_Metadata_Link:
<http://www.coris.noaa.gov/metadata/records/html/cred_ahi0602_mb_metadata.html>
CoRIS_Tracking_ID: 2728

Generated by mp version 2.9.13 on Mon Jul 28 10:40:13 2014