Kyushu – Research on a giant undersea submarine caldera near the islands in Japan found a surprising new finding about a lava dome containing eight trillion gallons of lava.
Launched from the Live Science page on Wednesday (14/2/2018), the volcano dome which is 50 kilometers south of Kyushu Island has a diameter of almost 10 kilometers, and height of more than 600 meters which is now solid rock.
The findings of the giant caldera are said to be related to the legend of the eruption of Mount Kikai, where it is said to be a super volcanic eruption that occurred between 6,000 and 7,000 years ago.
According to Yoshiyuki Tatsumi, a scientist who writes related reports on the journal Natural Scientific Report, the massive eruption caused pyroclastic flow, a rapid flow of hot gas, volcanic ash, and rocks.
The pyroclastic flow is called blowing up to 80 kilometers, and spreading volcanic ash up to a radius of 1,000 kilometers, across the sea to parts of East Asia.
The volcanic system is known to be active, and is at risk of triggering massive eruption activity in the modern era. If it erupts, this giant caldera will be a disaster for the 100 million people in Asia Pacific, especially those living in the Far East, such as Japan, the Korean Peninsula, and China.
Although not mentioned when exactly, the volcano under the age of more than 95,000 years was recorded several times issued steam and volcanic dust in the modern era, last occurred between 2013 and 2014 ago.
Signs of the Next Great Explosion
Related to the position of the caldera that is below sea level, it makes researchers have difficulty in monitoring the development activities. Tatsumi and his team decided to dive to map the caldera floor with sonar reflections.
In addition, a team of related researchers also fired small explosive charges around the caldera’s foot, in order to create a seismic effect to describe the underwater surface around the caldera.
The study also took several rock samples, with the aim of knowing the chemical content of the caldera area.
Related research proves that the volcanic dome, in fact formed from liquid lava manifold rhyolite – young liquid lava – which is estimated to amount to nearly 8 trillion gallons in number.
“The post-caldera activity seen on this undersea volcano could be a sign of preparation for the next great eruption,” said Tatsumi, referring to the findings of hot springs on the seabed, and boiling gas flows that rise to the surface of the ocean.
Trigger Weather Anomaly
If the giant caldera erupts, the blast of steam and gas produced will have a serious impact on the global climate. Earth’s temperature will drop a few degrees, so the risk of triggering weather anomalies.
If the weather is anomalous, then the safety of Earth’s population is threatened. The crop failures will occur not only in the Asia Pacific region, but also likely to occur in almost all parts of the Earth.
A new survey involving seismic and electromagnetic sensors, will be juxtaposed with underwater robots to map precisely the shape of the caldera. Thus, it is hoped that later related findings can be key to knowing the signs of what is happening in the giant caldera.
The active lava dome has been a crucial issue for mankind in recent times. Volcanic activity can be a sign of a more powerful volcano eruption in the modern era.
In addition to the gigantic caldera Kikai, volcanic activity of large scale also continues to occur in Yellowstone National Park, United States, and volcanoes near the City of Naples, Italy.