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) 200606 Video and photo imagery, track line navigation files, and log sheets http://www.soest.hawaii.edu/pibhmc/ http://www.soest.hawaii.edu/pibhmc/pibhmc_nwhi_phr.htm 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, Pearl and Hermes Atoll to support Benthic Habitat Mapping efforts during NOAA Ship Oscar Elton Sette cruise OES0306. These data will provide optical observations that will be correlated with bathymetry and acoustic backscatter imagery to create a fish biomass map of Pearl and Hermes Atoll. Refer to supplemental information for description of instrument and survey. Pearl and Hermes Atoll, located at 27.8N, 175.8W, is an extensive atoll area containing numerous small islets. The coral reef environment includes 1,166 sq. km of banks shallower than 100 m in depth. Mobile fauna 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 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 using a capstan. The operator monitored a live video feed from the camera and began recording data on a video tape recorder. 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, "PHR" 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 004. 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, "PHR03002.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. Resource Description: Digital video images that are geo-referenced to navigation files 20030730 20030802 ground condition Complete As needed -176.01243 -175.99147 27.98013 27.75137 CoRIS Theme Thesaurus EARTH SCIENCE > Biosphere > Aquatic Habitat > Benthic Habitat EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment > Mapping EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment > Photographic analysis > Videography EARTH SCIENCE > Oceans > Marine Biology > Fish None Tethered Optical Assessment Device (TOAD) Underwater video OES0306 CoRIS Discovery Thesaurus Geographic Information > Fish Stock Characteristics ISO 19115 Topic Category environment 007 biota 002 CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > Pearl and Hermes Reef (27N176W0001) COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Pearl and Hermes Reef (27N176W0001) None Northwestern Hawaiian Islands 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 http://data.nodc.noaa.gov/coris/data/NOAA/nmfs/pifsc/cred/TOADbrowse/TOAD_PHA_92dpi.jpg Pearl and Hermes Atoll, NWHI: TOAD Tows and Multibeam Bathymetry JPEG Benthic Habitat Mapping Group, Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Oceanic and Atmospheric Administration (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 (tones/hectare), and number of fish was exported from MS Access into ArcGIS v9.2. This file was exported as a shapefile. Column with biomass data was symbolized using layer file MF_Biomass.lyr to create Fish Biomass Estimates map. 20060318 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 year, day of year, time, latitude, longitude, velocity north and east, water column depth, vehicle depth, layback, and wing angle. For this data set the fields for vehicle depth and wing angle do not contain useful data. List of navigation files: PHR03002.glo PHR03003.glo PHR03004.glo PHR03005.glo PHR03006a.glo PHR03008.glo PHR03009.glo PHR03010.glo PHR03011.glo PHR03012.glo PHR03016.glo PHR03017a.glo PHR03018a.glo PHR03019.glo PHR03020a.glo PHR03021a.glo PHR03022a.glo PHR03023.glo PHR03024.glo CD-ROM ISO 9660 mini digital video List of video tapes: PHR03002-003, VHS, Master PHR03004, VHS, Master PHR03005-006, VHS, Master PHR03008-010, VHS, Master PHR03011-012, VHS, Master PHR03016-018, VHS, Master PHR03019, VHS, Master PHR03021-022, VHS, Master PHR03023-024, VHS, Master PHR03002-003, Mini DV, Master PHR03004, Mini DV, Master PHR03005-006a, Mini DV, Master PHR03006b, Mini DV, Master PHR03008-010a, Mini DV, Master PHR03008-010b, Mini DV, Master PHR03011-012, Mini DV, Master PHR03016-018, Mini DV, Master PHR03019, Mini DV, Master PHR03021-022, Mini DV, Master PHR03023-024a, Mini DV, Master PHR03024b, Mini DV, Master PHR03002-003, Mini DV, Backup PHR03004, Mini DV, Backup PHR03005-006a, Mini DV, Backup PHR03006b, Mini DV, Backup PHR03008-010a, Mini DV, Backup PHR03008-010b, Mini DV, Backup PHR03011-012, Mini DV, Backup PHR03016-018, Mini DV, Backup PHR03019, Mini DV, Backup PHR03021-022, Mini DV, Backup PHR03023-024a, Mini DV, Backup PHR03024b, Mini DV, Backup Video cassette tape Mini DV JPG digital still photo 245 still images available; poor photos were enhanced or deleted List of photo folders: PHR03006: PHR_073003_1717 (49 photos) PHR03010: PHR_073103_0803 (47 photos) PHR03011: PHR_073103_0852 (95 photos) PHR03018: PHR_080103_0809 (54 photos) CD-ROM JPEG None 20121217 20081222 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) CRED Data Management Team 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 20081222035324 None 20030730 20030802 http://www.coris.noaa.gov/metadata/records/html/cred_toad_pearl_hermes_oes0306_2003_mobilefauna.html 2479