A hundred thousand years ago, cracked a huge block of a volcano "Mauna Loa" Mauna Loa on the island of Hawaii, and slipped into the sea, and launched a surge, rose high, such as the Eiffel Tower, and reached Sfoha to a nearby island.
This massive tsunami is not the only incident; saw Forty thousand years at least the last ten giant landslides; dropped by more than a hundred cubic kilometers of rock northern Atlantic Ocean alone, the collapse of which could potentially bring up waves height of tens to hundreds of meters.
And an event like this is inevitable recurrence of the incident in the last time, despite the fact that no one knows this Oika tomorrow, or after ten thousand years.
She says the magazine "Nature" It is in the natural world, there are risks that can not be predicted, where the geologic record is replete with evidence of the occurrence of rare Terrible disasters, ranging from collisions Kwecbah, through volcanoes Great to gamma ray bursts.
Among cosmic hazards, and even the most dangerous to human life on Earth, volcanoes and what caused devastating effects on our planet.
The land now in the middle of intense volcanic activity high. During the 13.5 million recent years, there has been at least 19 giant rush, tossed each of them more than a thousand cubic kilometers of rock, which is enough to cover the entire continent with a few centimeters of ash and plunging the planet in the "nuclear winter."
The most recent of these outbreaks is a volcano "Toba" Toba in Indonesia, which erupted 74 thousand years ago, and was a catastrophic event, to the extent that some scientists tend him, blamed as the last ice age began.
The smallest of four super volcanoes and its most active systems in the world are: "Tuba" in Indonesia, "Camby Vlijra" Capmi Flegrei in Italy, and "Yellowstone" Yellowstone in the north west of the United States of America, and "Topo" Taupo in New Zealand.
Being monitored all systems volcanic four in terms of waves reckless and seismic waves - groups of small earthquakes indicate magma moving - all from time to time issued these signals, but no one knows whether the result of each explosion would be small, such as puff steam, or more much danger, a great lava Kandlaa.
To help answer these questions, scientists dig now in the heart of the most important volcanoes candidate for the next explosion;, a volcano "Ajafrh" in "Campi Vlijra"; They crater width of 13 km, embracing the city of Naples.
Since 1969, Earth in "Campi Vlijra" to about 3.5 meters higher, and scientists are keen to know whether responsible for this is the steam from underground, or magma pool.
The attacks came earlier than volcanic activity in Jufrah after rising ground several meters or more. The researchers likely that much activity may occur in the contracts or the next few centuries.
To determine the extent of the danger, scientists plan to dig a crater three kilometers deep, despite the fears of some researchers to be called the drilling earthquake or explosion.
