1997年海底传来一个“Bloop”，比任何已知的动物都响

In the summer of 1997, the US National Oceanic and Atmospheric Administration deployed a batch of underwater microphones in the South Pacific, originally intended to monitor undersea volcanoes and earthquakes.

One day, these microphones picked up a very strange sound: a low, constantly rising "hum" that lasted for about a minute. It was so loud that two microphones five thousand kilometers apart received it simultaneously.

Scientists gave it a name, "Bloop", taken from the onomatopoeia for water "gurgling" bubbles.

Its intensity exceeded that of any known marine animal, including the blue whale. The frequency variation of this sound was also very similar to that of an animal. Online, people immediately speculated: Was it Cthulhu? Was it a huge sea monster that no one had ever seen? Its location was off the southern tip of South America, and netizens comparing maps said it wasn't far from the sea where Cthulhu sleeps.

After this, NOAA personnel subsequently received several similar sounds, which they also named: "Julia", "Upsweep", "Train", "Whistle".

In 2005, NOAA scientists said they compared "Bloop" with icequakes later recorded in Antarctica and found the waveforms very similar; it was the sound of a large iceberg breaking apart in the ocean, called an "icequake". Another one, "Julia", after comparison, was the sound of a grounded iceberg rubbing against the seabed.

The sound was so loud because when ice cracks, it releases a great deal of energy, and low-frequency sound can travel very far in the deep sea.

However, online there are still people who say the official explanation cannot convince them. After all, no one has ever seen the source of the sound with their own eyes.

#Paranormal #网络转载 #世界奇闻