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"TOKYO -- When an earthquake measuring a lower 5 or stronger on the 7-point Japanese seismic intensity scale is predicted, public broadcaster NHK airs an emergency earthquake alert chime on TV and radio, known for its distinctive melody. Even in noisy environments, this sound is clear and can evoke a sense of fear. But why is that?"

"This webpage contains earthquake "sounds" created from seismic recordings around the world generated by the 2011/03/11 Mw9.0 Tohoku, Japan earthquake. They provide a unique way for us to listen to the vibration of the Earth that is otherwise inaudible to us, and to decipher the complicated earthquake physics and triggering processes. "

"Sounds of Seismic (SOS) is an art-science, auditory display software system broadcasting continuous seismic sound generated from realtime collected global earthquake data. An internet audio streaming service, SOS webcasts electroacoustic music as multi-channel seismic generated sounds creating an infinite computational earth system soundscape! "

"Conversations of Great Whales in the oceans… Low throb of ship engines… Continuous rumble of the ground beneath our feet and of the seafloor below the water… Bursts of vibrations excited by earthquakes… We cannot normally hear these vibrations as sounds-the human ear is not designed to. But what if we could? What if we could make the sounds of the Earth audible?"

"The Discovery of Sound in the Sea website will introduce you to the science and uses of Sound in the Sea. There are several major sections on the site such as The Science of Sound in the Sea, People and Sound in the Sea, and Animals and Sound in the Sea. You will find the site's Audio Gallery a fascinating place to visit where you can listen to underwater sounds created by marine animals, human activities, and natural phenomena such as lightning, earthquakes, and rain. Check out the Technology Gallery and discover a variety of equipment that uses sound to investigate the ocean. Watch video interviews with scientists that study how marine animals produce and hear sounds. Investigate how scientists use underwater acoustics to track ocean currents, identify potential obstacles, and quantify fish distributions. There are also resources for many specialized audiences, including teachers, students, the media, and decision makers."