CRED Fish Biomass Estimates at French Frigate Shoals in the Northwestern Hawaiian Islands, 2008

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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: 200906
Title:
CRED Fish Biomass Estimates at French Frigate Shoals in the Northwestern Hawaiian Islands, 2008
Geospatial_Data_Presentation_Form: Video imagery, track line navigation files, and log sheets
Online_Linkage: <http://www.soest.hawaii.edu/pibhmc/pibhmc_nwhi_ffs_optical.htm>
Online_Linkage:
<ftp://ftp.soest.hawaii.edu/pibhmc/website/data/nwhi/optical/ffs/FFS_TOAD_MF.jpg>
Description:
Abstract:
Fish biomass data were collected using a Towed Optical Assessment Device (TOAD), an underwater sled equipped with an underwater digital video camera and lights. Data were collected at the Northwestern Hawaiian Islands, French Frigate Shoals to support Benthic Habitat Mapping efforts.
Purpose:
These data will provide optical observations that will be correlated with bathymetry and acoustic backscatter imagery to create a fish biomass map of French Frigate Shoals. Refer to supplemental information for description of instrument and survey.
Supplemental_Information:
French Frigate Shoals is a large open atoll located at 23.75N, 166.2W. The underlying basalt structure is estimated to be 13.8 million years old. Tern Island is the largest island at FFS and was enlarged by the U.S. Navy just prior to World War II; numerous other small islets exist. The total land mass is only 0.23 sq. km but the large reef and adjacent banks include 733 sq. km of coral habitat less than 100 m.

Mobile fauna data were collected using the Tethered Optical Assessment Device (TOAD), a sled equipped with underwater video cameras and lights. These data are used to provide fish count and biomass maps where benthic habitat classification has been completed. Camera sled deployments were conducted at night and during the day. The camera sled was deployed off the starboard J-frame on NOAA ship Hi'ialakai. The TOAD was lowered slowly to the bottom by a winch holding 360 m of cable and operated from a control station in the dry lab of the ship. The TOAD operator monitored a live video feed from the camera and record data on a video tape recorder.

Equipment Description - The TOAD sled body used for the data collection is constructed from a shortened Phantom ROV body with a tail piece added for stability. The frame has been extensively modified from its original configuration and was equipped with two Deep Sea Power and Light Multi SeaCam 2060 color video cameras. One camera is mounted to point at approximately a 45 degree angle toward the seafloor and is the primary data collection instrument. The second camera is aimed straight ahead and the signal from this camera is fed to a second video monitor to provide warning of underwater obstructions. The video signals from the sled are sent via coaxial conductors within a 360 m long and 19 mm diameter umbilical cable to a topside control unit. The cable between the sled and the surface includes an internal strength member to support the sled frame. The cable is paid out and recovered using a dedicated custom-built winch equipped with slip rings and powered by a 5 hp electric motor. The winch is controlled at the winch itself for sled deployments and recoveries. The rest of the time a remote controller located in the dry lab is used to enable the operator at the video console to adjust the sleds altitude. All TOAD surface components are located in the Dry Lab in an equipment rack on the after bulkhead. Illumination is provided by two 250 W DeepSea Power & Light Multi-SeaLite model 1050 underwater lights mounted on the sled frame. The lights are located on each side of the sled to provide the maximum possible horizontal distance from the camera. An ORE Offshore model 4330B Multibeacon is attached to the sled to provide a response to acoustic interrogations sent by the Hi'ialakai's Model 4410D-01 Trackpoint II Plus Ultrashort Baseline acoustic tracking system.

The sled is also equipped with a sonar altimeter to detect the height of the camera above the seafloor, a pair of parallel lasers to determine the size/scale of viewed objects, a compass to determine the sled heading and orientation, and a depth (pressure) sensor. Neither the altimeter nor the pressure transducer functioned reliably during this cruise.

Name and address of person collecting data - John Rooney NOAA IRC NMFS/PIFSC/CRED 1845 WASP Blvd., Building 176 Honolulu, HI 96818

Data Files - Video data are recorded on a mini DV video tape recorder. The position of the camera sled is recorded using Hypack Max version 6.2b survey software.

File naming convention - Each tow is given a name consisting of a 3-letter designator for the island area followed by two-digit year and three-digit tow number. For example, during HI0804 (NOAA Ship Hi'ialakai's 4th cruise in calendar year 2008) the first tow was called FFS08001. Video tape labels and paper log forms are annotated with the tow name.

Data files recorded in Hypack software followed their CHS filename format consisting of the year, the first two letters of the platform name, the Julian date, and the hour and minute in which the file was started. For example, a file collected on July 18, 2005 (Julian date 199) aboard the Hi'ialakai starting at time 1935 would be 2005HI1991935.

Time Correlation - All times are based on UTC. Four clocks were manually synchronized prior to starting data collection; the clock in the on screen display that was used to annotate the video tape, in one of the video cassette recorders, in the Trackpoint II system, and in the computer running the Hypack Max software. These clocks are set to UTC at the beginning of each operation.

Resource Description: Digital video imagery that is geo-referenced to navigation files.

Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20080507
Ending_Date: 20080526
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None Planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -166.37545
East_Bounding_Coordinate: -166.24015
North_Bounding_Coordinate: 23.9084387
South_Bounding_Coordinate: 23.6143596
Keywords:
Theme:
Theme_Keyword_Thesaurus: CoRIS Theme Thesaurus
Theme_Keyword: EARTH SCIENCE > Biosphere > Aquatic Habitat > Benthic Habitat
Theme_Keyword:
EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment > Mapping
Theme_Keyword:
EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment > Photographic analysis > Videography
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Tethered Optical Assessment Device (TOAD)
Theme_Keyword: Underwater video
Theme_Keyword: OES0306
Theme:
Theme_Keyword_Thesaurus: CoRIS Discovery Thesaurus
Theme_Keyword: Geographic Information > Fish Stock Characteristics
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: environment
Theme_Keyword: 007
Theme_Keyword: biota
Theme_Keyword: 002
Place:
Place_Keyword_Thesaurus: CoRIS Place Thesaurus
Place_Keyword:
OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > French Frigate Shoals (24N166W0001)
Place_Keyword:
COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > French Frigate Shoals (24N166W0001)
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Northwestern Hawaiian Islands
Place:
Place_Keyword_Thesaurus: CoRIS Region
Place_Keyword: NWHI
Access_Constraints: None
Use_Constraints:
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:
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_Person: John Rooney
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
Browse_Graphic:
Browse_Graphic_File_Name:
<http://www.soest.hawaii.edu/pibhmc/NWHI_images/FFS_TOAD_MF_445.jpg>
Browse_Graphic_File_Description:
French Frigate Shoals, NWHI - TOAD Tows and Multibeam Bathymetry
Browse_Graphic_File_Type: JPEG
Data_Set_Credit:
Pacific Islands Benthic Habitat Mapping Center, Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), NOAA
Security_Information:
Security_Classification_System: Not applicable
Security_Classification: Unclassified
Security_Handling_Description: Not applicable

Data_Quality_Information:
Logical_Consistency_Report: Unspecified
Completeness_Report: Complete
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The horizontal position accuracy for the camera sled position is estimated at plus or minus +/- 20 meters. There are two primary sources of this error. The ship's positioning is based on GPS SPS, often called standalone or non-differential GPS positioning. SPS has a measured accuracy of under 5 meters. The position of the GPS antenna is referenced to the ship's granite block. The second and larger primary source of error is uncertainty associated with the sled's position as reported by the Trackpoint II acoustic tracking system, which is also referenced to the granite block.
Lineage:
Process_Step:
Process_Description:
After a tow is completed the video tape data is reviewed by spot-checking the master and backup tape to verify that data were recorded. Raw data files recorded using Hypack Max software include time, horizontal position, and ship's heading information are copied from the acquisition computer to the data archive. Tow-specific metadata are recorded in the data archive in the same location as the raw data, in a spreadsheet that was then referred to in creating metadata records of each island where data were collected during the cruise. Raw data files are exported as comma-delimited text files which were then imported into ArcGIS v9.2 and saved as shapefiles. TOAD video were classified for benthic habitat type to create Optical Validation maps to interpret acoustically derived data layers. These classified points were imported into a Microsoft Access 2003 database. All fish present during 15 second intervals before and after these positions were recorded and identified. Using LW coefficients derived from fishbase.org and size estimates from video, total biomass was calculated for a given point. An area of 0.0012 hectares per point observation was assumed based on average distances traveled between points as well as average width of field of view. A table with position, island, biomass(tonnes/hectare), and number of fish was exported from MS Access into ArcGis v9.3. This file was exported as a shapefile. A column with biomass data was symbolized using layer file MF_Biomass.lyr to create Fish Biomass Estimates map.
Process_Date: 20080716

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_Person: John Rooney
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.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ASCII
Format_Information_Content:
Each comma-delimited record contains information on the UTC date and time, horizontal position of the sled, and heading of the ship over the period of time that the camera sled is in the water.

List of navigation files: 2008HI1280854.raw 2008HI1290110.raw 2008HI1292100.raw 2008HI1300000.raw 2008HI1300023A.raw 2008HI1300023B.raw 2008HI1370347.raw 2008HI1370947.raw 2008HI1400335.raw 2008HI1400724.raw 2008HI1401448.raw 2008HI1402125.raw 2008HI1410053.raw 2008HI1410402.raw 2008HI1410937.raw 2008HI1411451.raw 2008HI1422024.raw 2008HI1422101.raw 2008HI1430407.raw 2008HI1430603.raw 2008HI1430904.raw 2008HI1431248.raw 2008HI1441917.raw 2008HI1442102.raw 2008HI1442226.raw 2008HI1450000.raw 2008HI1450150.raw 2008HI1471844.raw 2008HI1480000.raw

Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://www.soest.hawaii.edu/pibhmc/pibhmc_nwhi_ffs_optical.htm>
Offline_Option:
Offline_Media: CD-ROM
Recording_Format: ISO 9660
Digital_Form:
Digital_Transfer_Information:
Format_Name: mini digital video and DVD
Format_Information_Content:
List of video tapes:

FFS08001, Mini DV, (Master) and DVD, (Backup) FFS08002, Mini DV, (Master) and DVD, (Backup) FFS08003a, Mini DV, (Master) and DVD, (Backup) FFS08003b, Mini DV, (Master) and DVD, (Backup) FFS08003c, Mini DV, (Master) and DVD, (Backup) FFS08004a, Mini DV, (Master) and DVD, (Backup) FFS08004b, Mini DV, (Master) and DVD, (Backup) FFS08004c, Mini DV, (Master) and DVD, (Backup) FFS08005a, Mini DV, (Master) and DVD, (Backup) FFS08005b, Mini DV, (Master) and DVD, (Backup) FFS08005c, Mini DV, (Master) and DVD, (Backup) FFS08005d, Mini DV, (Master) and DVD, (Backup) FFS08005e, Mini DV, (Master) and DVD, (Backup) FFS08006a, Mini DV, (Master) and DVD, (Backup) FFS08006b, Mini DV, (Master) and DVD, (Backup) FFS08006c, Mini DV, (Master) and DVD, (Backup) FFS08007a, Mini DV, (Master) and DVD, (Backup) FFS08007b, Mini DV, (Master) and DVD, (Backup) FFS08007c, Mini DV, (Master) and DVD, (Backup) FFS08008a, Mini DV, (Master) and DVD (Backup) FFS08008b, Mini DV, (Master) and DVD (Backup) FFS08008c, Mini DV, (Master) and DVD (Backup) FFS08008d, Mini DV, (Master) and DVD (Backup) FFS08008e, Mini DV, (Master) and DVD (Backup) FFS08008f, Mini DV, (Master) and DVD (Backup) FFS08009a, Mini DV, (Master) and DVD (Backup) FFS08009b, Mini DV, (Master) and DVD (Backup) FFS08009c, Mini DV, (Master) and DVD (Backup) FFS08010a, Mini DV, (Master) and DVD (Backup) FFS08010b, Mini DV, (Master) and DVD (Backup) FFS08011a, Mini DV, (Master) and DVD (Backup) FFS08011b, Mini DV, (Master) and DVD (Backup) FFS08012a, Mini DV, (Master) and DVD (Backup) FFS08012b, Mini DV, (Master) and DVD (Backup) FFS08012c, Mini DV, (Master) and DVD (Backup) FFS08012d, Mini DV, (Master) and DVD (Backup) FFS08013a, Mini DV, (Master) and DVD (Backup) FFS08013b, Mini DV, (Master) and DVD (Backup) FFS08013c, Mini DV, (Master) and DVD (Backup) FFS08013d, Mini DV, (Master) and DVD (Backup) FFS08014, Mini DV, (Master) and DVD (Backup) FFS08017a, Mini DV, (Master) and DVD (Backup) FFS08017b, Mini DV, (Master) and DVD (Backup) FFS08017c, Mini DV, (Master) and DVD (Backup) FFS08018a, Mini DV, (Master) and DVD (Backup) FFS08018b, Mini DV, (Master) and DVD (Backup) FFS08019a, Mini DV, (Master) and DVD (Backup) FFS08019b, Mini DV, (Master) and DVD (Backup) FFS08019c, Mini DV, (Master) and DVD (Backup) FFS08020a, Mini DV, (Master) and DVD (Backup) FFS08020b, Mini DV, (Master) and DVD (Backup) FFS08020c, Mini DV, (Master) and DVD (Backup) FFS08021a, Mini DV, (Master) and DVD (Backup) FFS08021b, Mini DV, (Master) and DVD (Backup) FFS08021c, Mini DV, (Master) and DVD (Backup) FFS08021d, Mini DV, (Master) and DVD (Backup) FFS08022, Mini DV, (Master) and DVD (Backup) FFS08023, Mini DV, (Master) and DVD (Backup) FFS08024a, Mini DV, (Master) and DVD (Backup) FFS08024b, Mini DV, (Master) and DVD (Backup) FFS08025, Mini DV, (Master) and DVD (Backup) FFS08026a, forward and downward tapes Mini DV, (Master) and DVD (Backup) FFS08026b, forward and downward tapes Mini DV, (Master) and DVD (Backup) FFS08026c, forward and downward tapes Mini DV, (Master) and DVD (Backup) FFS08026d, forward and downward tapes Mini DV, (Master) and DVD (Backup) FFS08026e, forward and downward tapes Mini DV, (Master) and DVD (Backup) FFS08026f, forward and downward tapes Mini DV, (Master) and DVD (Backup) FFS08026g, forward and downward tapes Mini DV, (Master) and DVD (Backup)

Digital_Transfer_Option:
Offline_Option:
Offline_Media: Video cassette tape
Recording_Format: Mini DV
Fees: None

Metadata_Reference_Information:
Metadata_Date: 20140312
Metadata_Review_Date: 20090518
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_Person: CRED Data Management Team
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 Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: Local Time
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None

CoRIS:
CoRIS_ID: 20061009062837
CoRIS_Children: None
CoRIS_Beginning_Date: 20080507
CoRIS_Ending_Date: 20080526
CoRIS_Metadata_Link:
<http://www.coris.noaa.gov/metadata/records/html/cred_toad_french_frigate_shoals_hi0804_2008_mobilefauna.html>
CoRIS_Tracking_ID: 4069

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