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) 20090930 Format - Video imagery, track line navigation files, and log sheets http://www.soest.hawaii.edu/pibhmc/ Fish biomass data were collected using a Tethered Optical Assessment Device (TOAD), an underwater sled equipped with an underwater digital video camera and lights. Data were collected at the Northwestern Hawaiian Islands, around Gardner Pinnacles to support Benthic Habitat Mapping efforts. These data will provide optical observations that will be correlated with bathymetry and acoustic backscatter imagery to create a fish biomass map of Gardner Pinnacles. Refer to supplemental information for description of instrument and survey. Gardner Pinnacles, located at 25.0N, 168.1W, is a pair of basaltic islets estimated to be 14 million years old. The larger of the two pinnacles has a diameter of about 180m at sea level. The shelf around Gardner includes 1,904 sq. km in depths shallower than 100m. Mobile fauna data were collected using the Tethered Optical Assessment Device (TOAD), a sled equipped with a digital underwater 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 at night, usually between 1800 and midnight. 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 port J-frame mounted amidships on the NOAA Ship Oscar Elton Sette. At each station the ship was positioned with the wind on the port side and drifted downwind; occasional light turns were applied to the ship's screws if necessary to reduce the ship's motion.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 two mini DV tape recorders. When the camera reached bottom the deck crew was notified by radio to stop lowering. 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 lower arm of the vessel's port side J-frame. The TOAD is a camera sled based on the Guildline MiniBat model 8820 tow body. The frame has been extensively modified from its original configuration and was equipped with an ROS model 54-00100-13 color underwater video camera as the primary data collection instrument. The ROS camera was mounted to point at approximately a 45 degree angle toward the seafloor. A Deep Sea Power and Light model 2050 MultiSeaCam low-light color video camera was also mounted on the sled and aimed straight ahead. The signal from this camera was fed to a second video monitor to provide warning of underwater obstructions the sled might be headed for. Illumination was provided by two 500 W DeepSea Power & Light Multi-SeaLite model 1050 underwater lights mounted on the original sled frame. The lights were located near the base and each side of the sled to provide the maximum possible horizontal distance from the ROS camera. Cable between the sled and the surface consisted of an underwater electrical cable (cable 2, black in color) with an internal Kevlar strength member to support the sled frame. The cable was led from the camera sled over a 22-inch diameter sheave hung from the J-frame, and from there around a gypsy head mounted on the alternate CTD winch, amidships on the vessel's port side. All TOAD surface components were located in the Dry Lab in an equipment rack on the after bulkhead. Name & address of person collecting data: John Rooney NOAA PIFSC 1125B Ala Moana Blvd Honolulu, HI 98614 Data Files: Video data were recorded on two video tape recorders. The position of the camera sled was recorded using Guildline MiniBat In-Tow data acquisition 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 "GAR" in this case followed by a five-digit tow number. The first two digits indicate the last two digits of the calendar year, i.e., "03" is used for this cruise, which took place in 2003. The last three numbers indicate the consecutive number of the tow for that island and year, and start on the next hundred for subsequent cruises in that year to the same island. During OES0306 the consecutive numbers started at 000. Video tape labels, the navigation files (*.glo) and paper log forms are all annotated with the tow name. Metadata were extracted from the navigation data and recorded to a file with the same name as the navigation file except that a file type of ".met" was appended; for example, "GAR03000.glo.met" Time Correlation: All times are based on UTC. Two clocks were set manually synchronized prior to starting data collection; the clock in the video character generator that was used to annotate the video tape and the TOAD data acquisition computer clock was used to annotate the navigation (*.glo) files. These clocks were set to UTC at the beginning of each evening's operations and then compared to one another prior to (and during) each tow. These clocks were set to UTC at the beginning of each evening's operations. Resource Description: Digital video imagery that is geo-referenced to navigation files. 20030719 20030719 ground condition Complete As needed -168.01620 -168.00378 24.99993 24.99200 None Fish Biomass Underwater video CoRIS Discovery Thesaurus Geographic Information > Fish Stock Characteristics ISO 19115 Topic Category biota 002 environment 007 CoRIS Theme Thesaurus EARTH SCIENCE > Biosphere > Aquatic Habitat > Benthic Habitat EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment > Mapping CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > Gardner Pinnacles (25N168W0001) COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Gardner Pinnacles (25N168W0001) None Hawaii CoRIS Region NWHI None Please acknowledge the NOAA Coral Reef Ecosystem Division, Pacific Islands Fisheries Science Center as the source of this information. 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) John Rooney mailing and physical address

1125B Ala Moana Blvd.

Honolulu HI 96814 (808) 983-3776 (808) 983-2902 pibhmc@soest.hawaii.edu e-mail preferred Pacific Island Benthic Habitat Mapping Center, Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), NOAA Not applicable Unclassified Not applicable Unspecified Complete The horizontal position accuracy for the camera sled position is 100 meters. There are three 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 used; no attempt is made to translocate this position to that of the tow block from which the camera is deployed. The difference between the tow block and the antenna is about 14 meters. The camera sled position is based a layback calculation that use ship's course, the amount of cable out and the camera sled depth to develop an estimate of the camera sled position. The amount of cable deployed is manually entered by the operator during a given camera tow. 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. 20090820 0.0001 0.0001 Decimal Degrees D_WGS_1984 WGS_1984 6378137.000000 298.257224 No correction 0.1 meters Attribute Values 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) John Rooney mailing and physical address

1125B Ala Moana Blvd.

Honolulu HI 96814 (808) 983-3776 (808) 983-2902 pibhmc@soest.hawaii.edu e-mail preferred Downloadable Data 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. ASCII 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: GAR03000.glo GAR03001.glo http://www.soest.hawaii.edu/pibhmc/pibhmc_nwhi_gar_optical.htm CD-ROM ISO 9660 mini digital video List of video tapes: GAR03000-001, VHS, Master GAR03000-001, Mini DV, Master GAR03000-001, Mini DV, Backup Video casette tape Mini DV None 20121220 20091202 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) mailing and physical address

1125B Ala Moana Blvd.

Honolulu HI 96814 (808) 983-3776 (808) 983-2902 pibhmc@soest.hawaii.edu e-mail preferred FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 Local Time None None 20091202025300 None 20030719 20030719 http://www.coris.noaa.gov/metadata/records/html/cred_toad_gardner_pinnacles_oes0306_2003_mobilefauna.html 4361