The TOAD operator monitored a live video feed from the camera and record data on a video tape recorder.Įquipment 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 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 camera sled was deployed off the starboard J-frame on NOAA ship Hi'ialakai. Camera sled deployments were conducted at night and during the day. These data are used to provide fish count and biomass maps where benthic habitat classification has been completed. Mobile fauna data were collected using the Tethered Optical Assessment Device (TOAD), a sled equipped with km but the large reef and adjacent banks include 733 sq. Navy just prior to World War II numerous other small islets exist. Tern Island is the largest island at FFS and was enlarged by the U.S. The underlying basalt structure is estimated to be 13.8 million years old. Refer to supplemental information for description ofįrench Frigate Shoals is a large open atoll located at 23.75N, 166.2W. To create a fish biomass map of French Frigate Shoals. These data will provide optical observations that will be correlated with bathymetry and acoustic backscatter imagery Data were collected at the Northwestern Hawaiian Islands,įrench Frigate Shoals to support Benthic Habitat Mapping efforts. Geospatial_Data_Presentation_Form: Video imagery, track line navigation files, and log sheets Online_Linkage: Online_Linkage: Description: Abstract:įish biomass data were collected using a Towed Optical Assessment Device (TOAD), an underwater sledĮquipped with an underwater digital video camera and lights. 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)ĬRED Fish Biomass Estimates at French Frigate Shoals in the Northwestern Hawaiian Islands, 2008 Identification_Information: Citation: Citation_Information: Originator: CRED Fish Biomass Estimates at French Frigate Shoals in the Northwestern Hawaiian Islands, 2008 CRED Fish Biomass Estimates at French Frigate Shoals in the Northwestern Hawaiian Islands, 2008