M
mavis
Guest
Hey guys, I just posted this at a couple of hardware forums I go to, but I thought you might enjoy it as well ... Any thoughts?
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Hmm... just saw some bad news and TV and was reminded of something I read online a few weeks ago. I saw on the news here in Japan that over 50 whales beached themselves near Cape Cod today. That reminded me of an interesting article which talked about the Bush administration ok'ing use of an LFA system for the US Navy.
Researching a little more about LFA, I found the following information:
And here's another interesting tidbit:
IMHO, President Bush should be exposed to, alas, not 160 decibels - but rather the full 215 decibels he thinks are ok for whales to hear.
Anyway, I seriously wonder if the Bush administration's wanton disregard for life is indeed responsible for the mass beaching today. I really hope not ...
mavis
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Hmm... just saw some bad news and TV and was reminded of something I read online a few weeks ago. I saw on the news here in Japan that over 50 whales beached themselves near Cape Cod today. That reminded me of an interesting article which talked about the Bush administration ok'ing use of an LFA system for the US Navy.
Researching a little more about LFA, I found the following information:
from msn.com:
Whales are particularly susceptible to sonar interference because they rely on sound for communication, feeding, mating and migration. According to the Navy, each of the sonar’s 18 speakers transmits signals as loud as 215 decibels, equivalent underwater to standing next to a twin-engine F-15 fighter jet at takeoff.
Environmentalists say, however, that with the convergence of sound waves from each of the speakers, the intense effects of the system would reach farther, as if the signals were 235 decibels.
...
Some biologists believe whales are irritated by sounds louder than 110 decibels and that a whale’s eardrums could explode at 180 decibels.
Environmentalists’ fears are partly based on the Navy’s deployment of a powerful mid-range sonar in March 2000 during a submarine detection exercise in the deep water canyons of the Bahamas.
At least 16 whales and two dolphins beached themselves on the islands of Abaco, Grand Bahama and North Eleuthera within hours. Eight whales died. Scientists found hemorrhaging around the brain and ear bones, injuries consistent with exposure to loud sounds.
And here's another interesting tidbit:
from nrdc.org:
According to the Navy's study, scientists briefly exposed a 32-year-old Navy diver to LFA sonar at a level of 160 decibels -- a fraction of the intensity at which the LFA system is designed to operate. After 12 minutes, the diver experienced severe symptoms, including dizziness and drowsiness. After being hospitalized, he relapsed, suffering memory dysfunction and seizure. Two years later he was being treated with anti-depressant and anti-seizure medications.
IMHO, President Bush should be exposed to, alas, not 160 decibels - but rather the full 215 decibels he thinks are ok for whales to hear.
Anyway, I seriously wonder if the Bush administration's wanton disregard for life is indeed responsible for the mass beaching today. I really hope not ...
mavis