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SWFSC » Technologies

(18 objects, created 7/13/2009)

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Album: This is a private album that is not visible to anonymous users Technologies

Summary: The Advanced Survey Technologies Program (AST) is part of the Fisheries Resources Division (FRD) at the Southwest Fisheries Science Center (SWFSC). AST supports ecosystem-based fisheries management through new or innovative uses of sampling technologies. AST's strategy is to first characterize measurement and sampling uncertainties, and define gaps in existing data; and then develop, refine, and employ advanced survey technologies to improve the accuracy, precision and efficiency of fisheries surveys and thus resulting stock assessments. Examples of advanced survey technologies include: instrumented buoys, instrumented small craft, and autonomous underwater vehicles (AUV).

FRD is also home to the Benthic Resources Program, which uses a remotely operated vehicle to monitor the status of several species, but primarily endangered white and black abalone, off the coast of the western United States.

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The SWFSC ROV This is the SWFSC remotely operated vehicle, or ROV, being deployed off the NOAA Ship David Starr Jordan. Key words: ROV, remotely operated vehicle Contact: SWFSC's Benthic Resources Program

The SWFSC ROV

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The NMFS AUV The NMFS autonomous underwater vehicle, or AUV, before deployment from the Scripps Institution of Oceanography pier. The AUV is rotated on its side to show the bottom instrumentation, which includes a 38 kHz echosounder, a camera with strobe, and an acoustic doppler current profiler (ADCP). The AUV is programmed to conduct dives and return to the surface where it can be retrieved. Date: 08/15/2007Key words: AUV, autonomous underwater vehicleContact: SWFSC's Advanced Survey Technologies Program

The NMFS AUV

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AUV echogram with fish This is an echogram recorded by the autonomous underwater vehicle (AUV) using its 38 kHz echosounder. The echogram shows the sea floor and a school of fish in the water column. Date: 08/22/2007Key words: AUV, autonomous underwater vehicle, echogramContact: SWFSC's Advanced Survey Technologies Program

AUV echogram with fish

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SWFSC Instrumented Data Buoys These are two instrumented data buoys on board the deck of the R/V Yuzhmorgeologiya before deployment in the nearshore waters off the Antarctic peninsula. The bouys are instrumented with acoustic doppler current profilers and multi-frequency echosounders. Date: 01/31/2004 Key words: instrumented buoys, AST Contact: SWFSC's Advanced Survey Technologies Program

SWFSC Instrumented Data Buoys

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CTD cast SWFSC Advanted Survey Technologies staff member Josiah Renfree readies a Seabird CTD for deployment from the NOAA Ship David Starr Jordan during the COAST survey in 2007. A CTD collects physical oceanography data (conductivity, temperature, and depth), which the AST staff uses to determine the sound velocity depth profile for processing acoustic data collect during the cruise.Date: 05/07/2007Key words: CTD, ASTContact: SWFSC's Advanced Survey Technologies Program

CTD cast

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Drop Target Strength Array The drop target strength array is a self-leveling 38 kHz transducer that can be lowered down from the ship to be closer to the acoustic targets (e.g. fish schools). It is being launched from the NOAA Ship Oscar Dyson. Date: 11/5/2009 Key words: AST, Drop Target Strength Array Contact: SWFSC's Advanced Survey Technologies Program

Drop Target Strength Array

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Dr. Demer and AUV SWFSC Advanced Survey Technologies program leader Dr. David Demer with the NMFS autonomous underwater vehicle (AUV) on board the NOAA R/V Dale Van Holliday in San Diego, California. Date: 01/12/2006Key words: AUV, AST, NOAA R/V Dale Van Holliday, autonomous underwater vehicleContact: SWFSC's Advanced Survey Technologies Program

Dr. Demer and AUV

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AUV on Pier NMFS Advanced Survey Technologies program autonomous underwater vehicle (AUV) on the Scripps Institution of Oceanography pier in La Jolla, California. Date: 08/15/2007 Key words: AST, AUV, autonomous underwater vehicleContact: SWFSC's Advanced Survey Technologies Program

AUV on Pier

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F/V Outer Limits Transducers This is the transducer array mounted on the hull of the F/V Outer Limits. The array includes multi-frequency echosounders and two multiple frequency side-scan sonars. Date: 09/21/2009 Key words: AST, transducers, F/V Outer LimitsContact: SWFSC's Advanced Survey Technologies Program

F/V Outer Limits Transducers

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General purpose transceivers Dr. David Demer monitors the general purpose tranceivers aboard the F/V Outer Limits at 43-Fathom Bank off of southern California. The tranceivers are the "brains" of the transducer system, controlling the transmission and reception of the acoustic signal. Date: 09/22/2009Key words: AST, transceivers, F/V Outer LimitsContact: SWFSC's Advanced Survey Technologies Program

General purpose transceivers

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FasTowCam SWFSC Advanced Survey Technologies (AST) program contractors Mike Paterson and Derek Needham, and AST staff member Steve Sessions next to the FasTowCam system aboard the NOAA Ship Miller Freeman in Puget Sound. The FasTowCam is a new instrument that has stero cameras on its sides. The device is towed at a selected depth behind a ship and the images it gathers help identify and size acoustic targets while underway.Date: 11/05/2009 Key words: AST, FasTowCamContact: SWFSC's Advanced Survey Technologies Program

FasTowCam

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FasTowCam deployment Derek Needham (Advanced Survey Technologies (AST) program contractor) and Dr. David Demer (AST program leader) aboard the R/V John Martin in Moss Landing. Derek is monitoring the FasTowCam, while David is monitoring the acoustics. This was a collaborative cruise with Monterey Bay Aquarium Research Institute (MBARI) to investigate jellyfish and sardine occurrence.Date: 11/06/2009Key words: AST, FasTowCamContact: SWFSC's Advanced Survey Technologies Program

FasTowCam deployment

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