Dennis said...
It has never been proven that the SONAR causes the whales to beach themselves or wreak other havoc in the ocean. If SONAR was the root cause of the problem, wouldn't it stand to reason that since WWII that whales would have been beaching themselves en masse since then and would have caused a mass extinction of several species? The whole issue is based on junk science.
SONAR TESTING
This article documents several major beachings of toothed whales in link with sonar testing.
BENDS
This article by the National Geographic links mid range sonar a condition like the bends that effect whales, causing them to beach.
COVER UP
This article in the Washington Post shows that after tests off of North Carolina, there was a mass beaching of toothed whales. One reporter who follows stories of beached whales wrote a report mentioning the sonar testing. When the Navy released their findings, sonar testing was never mentioned as a possible cause.
And although I can't remember the scientist's name, on the National Geographic Channel, the guy has been studying whale beachings around Florida. He and placed several underwater microphones around the area. One day he noticed a small pod of dolphins trying to beach themselves. When he turned on his microphones, he caught the sound of the sonar of a passing navel ship. That, he believed, was proof of the link between sonar and beachings.
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2 comments:
First, It is easier to explain to someone that something man made is causing things to happen in our environment that to actually find out the cause. A lot, and I do mean a lot of these strandings have been looked at closer and they have found that a vast majority of them have been sick and led others to the beach, the lead annimals own sonar had been damaged and they followed the lead like lemmings over a cliff.
I have been following this idea for many many years and with each article put out blaming Navy SONAR, you will find twice as many leading you to sick animals.
1)http://www.newscientist.com/article.ns?id=dn8922&feedId=online-news_rss20
Once again, if navy Sonar is harming whales, why aren't thousands of SONAR Buoys in the Atlantic and Pacific causing mass hysteria? Why haven't these mass strandings been reported until the mid 90's and linked to SONAR? There has been SONAR since the 40's and very powerful SONAR since the 60's, why has this not become a major issue until now? Once again, it is easier to blame man than actually discovering the real cause.
Other articles
1)http://www.timesonline.co.uk/tol/news/uk/article717984.ece
2)
Royal Navy sonar suspected of contributing to the death of the 'Thames whale'
The post-mortem of the Thames whale showed conclusively that it died of dehydration and related causes. It is unsurprising that the Royal Navy sonar had no impact whatsoever on the whale as no Royal Navy ships were using their sonar in, or anywhere near, the Thames Estuary area at the time.
Less than 1% of man-made noise in British waters is as a result of Royal Navy activity. A diesel fishing boat chasing a shoal of fish puts more sound into the water than Royal Navy sonar at 500 meters. A marine mammal would have to be within 500 meters of active sonar for more than 15 minutes for it to suffer any permanent damage. This is extremely unlikely as marine mammals usually swim away from the source of the noise. If they do not, then the Royal Navy operator turns the sonar off.
The Royal Navy needs to use sonar for navigation and to detect a new generation of increasingly stealthy submarines. It operates its sonar legally within UK environmental legislation and international conventions. Each use of modern active sonar is preceded by an Environmental Impact Assessment that evaluates the possible impact on marine fauna and puts in place measures, including continuous monitoring of the operational area, the avoidance of known sensitive sites such as breeding grounds, beginning transmissions at low output levels to give marine life the opportunity to move away and establishing a minimum range from known diving sites.
3)http://www.tcsdaily.com/Article.aspx?id=072606D
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