![]() ![]() ![]() These rolling walls of noise are no doubt too much for some marine wildlife. These sound waves can travel for hundreds of miles under water, and can retain an intensity of 140 decibels as far as 300 miles from their source. Navy to detect enemy submarines-generate slow-rolling sound waves topping out at around 235 decibels the world’s loudest rock bands top out at only 130. Sonar systems-first developed by the U.S. Unfortunately for many whales, dolphins and other marine life, the use of underwater sonar (short for sound navigation and ranging) can lead to injury and even death. Dear EarthTalk: Is it true that military sonar exercises actually kill marine wildlife? ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |