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U.S. researchers found that Antarctica ice streams can have a tremendous shock wave slide, power and earthquakes similar. This is the first time researchers have discovered in Antarctica 'Ice shock.' University of Washington professor Douglas Wiens from 2001 began to set up multiple seismographs in Antarctica surrounding areas. From that year to 2003, seismographs to monitor the multiple seismic signals. Wiens said: 'At first we did not know where they come from shock, but in the end we have identified the source of the ice flow.' Monitoring data show that this ice stream width of 100 km, a thickness of 800 m. Each time you move, sent shock waves rippling through the ice streams in Antarctica, Australia and even as far as can be monitored. 

Professor, Department of Earth Sciences, Zhejiang University Chen Hanlin further explanation of the 'ice-shock' phenomenon. Professor Chen pointed out that this 'ice shock', the equivalent of a large object hit the water, resulting shock waves, and earthquakes similar, and, according to various measurement data can also be accounted to the magnitude, which produces explosives, etc. certain destructive magnitude is the same reason. Of course, the size of this ice stream to be large enough, can generate enough energy during sliding, thus following the distant land of ice and even a certain shock.

1997 NOAA hydrophones to capture the south coast region of South America ever one of the loudest voices: murmur. It is composed of two apart nearly 3,000 miles (4800 kilometers) hydrophone common captured. In some ways the noise that sounds like marine animals, but because it's too loud and can not be issued by any known marine animals. Many listeners joked that noise is actually issued by the Cthulhu, a science fiction depicted half octopus-like monster. For the time being the first deep-sea monster theory aside, NOAA considered the most likely explanation is that the noise is actually a chunk of iceberg cracking sound. In the Scotia Sea on record to this 'ice shock' sound, which is very similar to the 1977 mysterious murmur of voices. According to NOAA said that if the rupture of an iceberg that is indeed the source of the sound, then it is likely to float between 伯兰斯 Rumsfeld Strait and the Ross Sea in Antarctica, or in eastern Antarctica Adair angle.

This strange sound like someone growling or grumbling, first recorded in March 1, 1999. The eastern equatorial Pacific autonomous array (a kind of hydrophone network) to capture this strange sound. And noise, as the ice is likely to Julia sound. NOAA researchers suspect hydrophone captured chunks of Antarctic ice flowing into the sea floor is sound.