Acoustical oceanography and DEIMOS

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Presentation transcript:

Acoustical oceanography and DEIMOS Where are the Fish Acoustical oceanography and DEIMOS

Sound levels 20 db quiet bedroom 40 db library 60 db conversational speech 90 db street traffic 130 db jet engine 140+ db pain threshold

Sound in the Ocean Water is 800 times more dense that air—so sound is intensified in ocean environments

DEIMOS and MARS

Deep Echo-Integrating Marine Observatory System (DEIMOS)

Monterey Accelerated Research System (MARS)

DEIMOS Transducer

DEIMOS before deployment

Deloyment

Fisheries Acoustics Uses sound to detect, map, and count aquatic species Animals in the water are complicated scatterers of sound due to their shape, composition, curvature, and behavior.

Fish finder screen

Acoustical analysis from bottom up

Fish Swim Bladder reflects backscatter

Do your own analysis Look at a data stream from the DEIMOS Look for patterns and shapes in data What do you think you are looking at? What do you notice about the picture?

Daily cycles

Density of Species Richer colors=Dense marine organisms Cooler colors=Less dense organisms

Possible species

More species

Thank You Steve Seal LAUSD