Sound Pollution. Human noise drowns out song of whales. principal component of the hydrosphere 71% of the Earth\'s surface (an area of some 361 million square kilometers) most dramatic forms of weather occurs over the oceans: tropical cyclones
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Human noise drowns out song of whales
71% of the Earth\'s surface (an area of some 361 million square kilometers)
most dramatic forms of weather occurs over the oceans: tropical cyclones
Ocean currents greatly affect the Earth\'s climate by transferring warm or cold air and precipitation to coastal regions, where they may be carried inland by winds (climate equalizer)
essential to transportation: most of the world\'s goods are moved by ship between the world\'s seaports
important source of valuable food items for the fishing industry
Source of recreation
And most recently a source of energy through tidal turbinesAbout our oceans
General warming of the ocean
Slowing of ocean currents causing dead seas
Destruction of coral reefs and costal habitats due to commercial fishing and shipping
Increase of CO2
Increase of UV rays harming marine life because of ozone depletion
All of these are killing marine species but “sound pollution” kills our least known about marine mammal painfullyProblems facing our ocean
Researchers from the Zoological Society of London and the University of Las Palmas in the Canary Islands have found nitrogen bubbles in the tissues of stranded whales which exhibited the same effects as those of decompression sickness (DCS) in humans. "The detailed examination of the mass stranded whales in the Canaries in 2002 suggests the naval sonar could induce a condition similar to DCS,” Professor Antonio Fernandez of the University of Las Palmas said.
In early July 2004, a pod of 200 deep-water melon-headed whales stampeded into the shallow waters off Kauai, Hawaii, during U.S.-Japanese naval training exercises utilizing the high intensity sonar. In the confusion, one of the whales was stranded and died.
2008: beaching of more than 100 melon-headed whales in Madagascar and that of two dozen common dolphins on the southern British coast.
US Navy Sued in Hawaii by Environmentalist Groups; Lawsuit Attempts to Stop US Navy Sonar Exercises
Active Sonar was believed to have caused a massive beaching of Beaked Whales off the coast of Greece in 1996. NATO had been testing their Active Sonar System at the time, which only goes to confirm the risks of doing so.
In 2000, a U.S. Navy Battle Group used Active Sonar in the area where several whales of four different species beached themselves in the Bahamas. At first the Navy denied their Sonar Technology was to blame until their own investigation found severe acoustic trauma had caused hemorrhaging around the whales\' eyes and ears. A study by the government concluded with much certainty that the whales\' injuries were caused by mid-frequency sonar that ships in the area had been using. Marine Scientists believe that whales\' and dolphins often times beach themselves after being injured by the sonar.Related articles
Navy agreed to scale back the use of low-frequency wave technology
Representatives of more than 100 governments are gathered in Rome for a meeting of the U.N.-backed Convention on the Conservation of Migratory Species of Wild Animals. The agenda of the conference, which ended Friday December 12th, includes ways to increase protection for endangered species, including measures to mitigate underwater noise
Conference discussing a resolution that would oblige countries to reduce sound pollutionWhat is being done?