CRED Fish Biomass Estimates at Tutuila Island, 2008

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Reference_Information
• Distribution_Information
• Metadata_Reference_Information
• CoRIS

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: 20090930

Title: CRED Fish Biomass Estimates at Tutuila Island, 2008

Other_Citation_Details:

Format: Video imagery, track line navigation files, and log sheets

Online_Linkage:

http://www.soest.hawaii.edu/pibhmc/pibhmc_amsamoa_tutuila_optical.htm

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 American Samoa, Tutuila Island 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 Tutuila Island. Refer to supplemental information for description of instrument and survey.

Supplemental_Information:

Tutuila is the largest of seven islands in American Samoa at 142.3 sq. km. Volcanic in origin, it reaches a height of 653m at Matafao Peak. Tutuila is centered at 14.30 degrees N, 169.75 degrees W, has 101.3 km of coastline and an estimated 36.2 sq. km of reef area. The port of Pago Pago is a collapsed crater and is one of the largest natural ports in the Pacific. Pago Pago contains a tuna cannery which is a hub of a large purse-seining tuna fishing fleet. The cannery outputs large amounts of nutrients as byproduct into the waters of Pago Pago harbor. The human population of Tutuila in 1990 was 45,043. It is considered a high island and contributes significant nutrient and sediment runoff to coastal waters. Tutuila's waters are protected by the 0.7 sq. km Fagatele Bay National Marine Sanctuary, as well as by the National Park of American Samoa, which covers the north-central part of the island and approximately 5 sq. km of coastline.

Optical validation data were collected using the Tethered Optical Assessment Device (TOAD), a sled equipped with underwater video camera 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 during daylight hours, usually between 0600 and 1700. The duration of each tow varied but averaged about 40 minutes of bottom time at a given location. The camera sled was deployed from the starboard gunwhale of the Bonavista II. At each station the TOAD was lowered slowly to the bottom by the deck crew. The operator monitored a live video feed from the camera and began recording data on the video tape recorder. When the camera reached bottom the deck crew was notified by radio to stop lowering. The vessel then began a course of a predetermined heading maintaining a speed of approximately 1 knot for the remainder of the survey. The operator continued to monitor the vehicle and provided commands to raise or lower it to keep the camera just above the bottom.

Equipment Description: The TOAD was deployed from the starboard gunwhale of the vessel. The TOAD sled body used for the 2008 data collection is constructed from a shortened Phantom ROV body with a tail piece added for stability. It is equipped with a Deep Sea Power and Light Multi SeaCam 2060 color video camera, two 500 W DeepSea Power and Light Multi-SeaLite model 1050 underwater lights, 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. The video signal from the sled is send via a coaxial conductor within a 200 m long and 127 mm diameter umbilical cable to a topside control unit. All TOAD surface components were located below deck in the V berth of the vessel within an equipment rack secured to the benches.

Data Files: Video data were recorded on a video tape recorder. The position of the camera sled was 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 BV0801 (Bonavista II's 1st cruise in calendar year 2008) the first tow was called TUT08001. 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. Three clocks were manually synchronized prior to starting data collection; the clock in the video character generator that was used to annotate the video tape, in the video cassette recorder, and in the computer running the Hypack Max software. These clocks were set to UTC at the beginning of each day's operations.

Name & address of person collecting data:

John Rooney NOAA IRC NMFS/PIFSC/CRED 1845 WASP Blvd., Building 176 Honolulu, HI 96818

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: 20080215

Ending_Date: 20080225

Currentness_Reference: ground condition

Status:

Progress: Complete

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -170.92

East_Bounding_Coordinate: -170.49

North_Bounding_Coordinate: -14.20

South_Bounding_Coordinate: -14.38

Keywords:

Theme:

Theme_Keyword_Thesaurus: NCEI Geoportal Filter

Theme_Keyword: CoRIS_Metadata

Theme:

Theme_Keyword_Thesaurus: CRCP Project

Theme_Keyword:

Benthic Habitat Mapping and Characterization - American Samoa and the U.S. Pacific Remote Island Area

Theme_Keyword: 1084

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 > Photographic analysis > Videography

Theme_Keyword:

EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment > Mapping

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: Tethered Optical Assessment Device (TOAD)

Theme_Keyword: Underwater video

Theme_Keyword: OES0402

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 > 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 > Tutuila Island > Pago Pago (14S170W0008)

Place_Keyword:

COUNTRY/TERRITORY > United States of America > American Samoa > Tutuila Island > Pago Pago (14S170W0008)

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:

Place_Keyword_Thesaurus: None

Place_Keyword: Tutuila

Place_Keyword: American Samoa

Place:

Place_Keyword_Thesaurus: CoRIS Region

Place_Keyword: AmSam

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/amsamoa_images/tut_toad_mf_445.jpg

Browse_Graphic_File_Description: Tutuila, American Samoa: TOAD Tows and Multibeam Bathymetry

Browse_Graphic_File_Type: JPEG

Data_Set_Credit:

Benthic Habitat Mapping Group, Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Oceanic and Atmospheric Administration (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:

Hypack Max includes a window for manual entry of the length of camera sled cable paid out, a utility to enter horizontal and vertical offsets between the GPS antenna and sheave over which the camera sled cable passes, and a built-in caternary function. Using these data, Hypack Max automatically estimates the camera sled's position. Analysis of tow data indicate that horizontal positional uncertainty associated with the location of the camera sled recorded in Hypack is plus or minus 13 m.

Lineage:

Process_Step:

Process_Description:

After a tow was completed the video tape data was reviewed by spot checking the master and backup tape to verify that data were recorded. Navigation data were copied from the acquisition computer to the data archive. A metadata extractor (gloFilter.py, version 3/06) was run to summarize the navigation data and test for errors. If errors were detected they were corrected or flagged as appropriate and a new data file was made. This file's header was updated to document what type of processing occurred. A metadata file was recorded in the data archive in the same location as the navigation data. Processed navigation data were then read into ArcView 3.2 shapefiles using an ArcView Avenue script named TOAD.Import.Playback, version 9/25/01, written by Ronald Hoeke. 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: 20090901

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.0001

Longitude_Resolution: 0.0001

Geographic_Coordinate_Units: Decimal degrees

Geodetic_Model:

Horizontal_Datum_Name: D_WGS_1984

Ellipsoid_Name: WGS_1984

Semi-major_Axis: 6378137.000000

Denominator_of_Flattening_Ratio: 298.257224

Vertical_Coordinate_System_Definition:

Depth_System_Definition:

Depth_Datum_Name: No correction

Depth_Resolution: 0.1

Depth_Distance_Units: meters

Depth_Encoding_Method: Attribute values

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: 2008BO0462029 2008BO0462310 2008BO0470000 2008BO0470030 2008BO0470206 2008BO0471845 2008BO0472019 2008BO0472232 2008BO0480000 2008BO0480001 2008BO0480002 2008BO0480039 2008BO0480134 2008BO0481808 2008BO0481809 2008BO0482056 2008BO0482056A 2008BO0482111 2008BO0482318 2008BO0482318A 2008BO0490000 2008BO0490000A 2008BO0490136 2008BO0500003 2008BO0500758 2008BO0500930 2008BO0501059 2008BO0510027 2008BO0511918 2008BO0512041 2008BO0512212 2008BO0520014 2008BO0521905 2008BO0522022 2008BO0522219 2008BO0530016 2008BO0531915 2008BO0532034 2008BO0532140 2008BO0532316 2008BO0540000A 2008BO0540043 2008BO0541938 2008BO0542127 2008BO0542129 2008BO0542255 2008BO0550000 2008BO0550000A 2008BO0550044 2008BO0551843 2008BO056005 2008BO0560124 2008BO056192

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://www.soest.hawaii.edu/pibhmc/pibhmc_amsamoa_tutuila_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:

38h 8m of video data are available covering 83.2 km of seabed. These data were recorded on 47 video tapes

List of video tapes:

TUT08001 (Tape A), Mini DV Master, DVD Backup TUT08001 (Tape B), Mini DV Master, DVD Backup TUT08002, Mini DV, Master, DVD Backup TUT08003, Mini DV, Master, DVD Backup TUT08004, Mini DV, Master, DVD Backup TUT08005, Mini DV, Master, DVD Backup TUT05006 (Tape A), Mini DV Master, DVD Backup TUT08006 (Tape B), Mini DV Master, DVD Backup TUT05007 (Tape A), Mini DV Master, DVD Backup TUT08007 (Tape B), Mini DV Master, DVD Backup TUT08008, Mini DV Master, DVD Backup TUT08009, Mini DV Master, DVD Backup TUT08010 (Tape A), Mini DV Master, DVD Backup TUT08010 (Tape B), Mini DV Master, DVD Backup TUT08010 (Tape C), Mini DV Master, DVD Backup TUT08011, Mini DV Master, DVD Backup TUT08012, Mini DV Master, DVD Backup TUT08013, Mini DV Master, DVD Backup TUT08014, Mini DV Master, DVD Backup TUT05015, Mini DV Master, DVD Backup TUT08016, Mini DV Master, DVD Backup TUT05017, Mini DV Master, DVD Backup TUT08018 (Tape A), Mini DV Master, DVD Backup TUT08018 (Tape B), Mini DV Master, DVD Backup TUT08019, Mini DV Master, DVD Backup TUT08020, Mini DV Master, DVD Backup TUT08021 (Tape A), Mini DV Master, DVD Backup TUT08021 (Tape B), Mini DV Master, DVD Backup TUT08022, Mini DV Master, DVD Backup TUT08023, Mini DV Master, DVD Backup TUT08024, Mini DV Master, DVD Backup TUT08025, Mini DV Master, DVD Backup TUT08026, Mini DV Master, DVD Backup TUT08027, Mini DV Master, DVD Backup TUT08028, Mini DV Master, DVD Backup TUT08029, Mini DV Master, DVD Backup TUT08030, Mini DV Master, DVD Backup TUT08031, Mini DV Master, DVD Backup TUT08032 (Tape A), Mini DV Master, DVD Backup TUT08032 (Tape B), Mini DV Master, DVD Backup TUT08033, Mini DV Master, DVD Backup TUT08034 (Tape A), Mini DV Master, DVD Backup TUT08034 (Tape B), Mini DV Master, DVD Backup TUT08035, Mini DV Master, DVD Backup TUT08036, Mini DV Master, DVD Backup TUT08037, Mini DV Master, DVD Backup TUT08038, Mini DV Master, DVD Backup

Digital_Transfer_Option:

Offline_Option:

Offline_Media: Video cassette tape

Recording_Format: Mini DV

Digital_Form:

Digital_Transfer_Information:

Format_Name: MP4

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://www.soest.hawaii.edu/pibhmc/pibhmc_amsamoa_optical_data.html

Fees: None

Metadata_Reference_Information:

Metadata_Date: 20200329

Metadata_Review_Date: 20091202

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: local time

Metadata_Access_Constraints: None

Metadata_Use_Constraints: None

CoRIS:

CoRIS_ID: 20091202011732

CoRIS_Children: None

CoRIS_Beginning_Date: 20080215

CoRIS_Ending_Date: 20080225

CoRIS_Metadata_Link:

https://www.coris.noaa.gov/metadata/records/html/cred_toad_tutuila_bv0801_2008_mobilefauna.html

CoRIS_Tracking_ID: 4356