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Configuration of tsunami warning pressure sensor system.

Configuration of tsunami warning pressure sensor system.
Configuration of tsunami warning pressure sensor system.
Configuration of tsunami warning pressure sensor system.
Configuration of tsunami warning pressure sensor system.
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307982
Taylor, Eric S.
Configuration of tsunami warning pressure sensor system.
Illustration
06/26/2017
Freitag_Illustration.jpg
Image Of the Day caption:
Research engineer Lee Freitag and colleagues in the WHOI Acoustic Communications Group are developing a longe-range underwater sound-singalling system to warn of possible tsunamis. When a pressure sensor detects a tsunami wave offshore, a modem sends out an underwater sound signal. Cool, deep water acts as a sound channel. Sound waves refract from the warm water layer above and bend back down toward the seafloor, where modems receive the sound signal and relay it to stations on the bottom and then to a cabled station that sends the tsunami alert to officials on shore. Freitag is also developing a system for communications under Arctic ice.
Caption from Oceanus magazine, Vol. 52, No. 2, pg. 53:
When a pressure sensor detects a tsunami wave, a modem sends out an underwater sound signal. Sound waves reflect off warm water layers on the surface down to relay stations on the bottom, and then to a cabled station that sends the tsunami alert to officials on shore.
Illustration by Eric S. Taylor, WHOI Creative
© Woods Hole Oceanographic Institution
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