Raul Ilyan Island

Raoul Ilyan is the largest of Kermadek Islands, more than 1,000 kilometers northeast of the North Island. This is a part at the stage of becoming a large volcano, almost 20 kilometers in diameter. Although it is obviously isolated, the island is located on the Kermedek mountain range, the chains of underwater volcanoes.

The irregular shape of the anvil island is due to a combination of volcanic activity and marine erosion. Detailed coastal and offshore studies show that there are two large crackers (Raoul and Denhan), both of which often broke through the last few thousands of years.

The eruptions were observed and registered in 1814, 1870, 1964 and 2006. Primary reports indicate that there were eruptions and Denheme and in Raul Calders between June and October 1870. The captain of Ellen Gudspid was described by the breaking volcano in Denhem Bay on July 5, which blew up a dark column ash and steam up to 1 000 meters. In early October 1870, there were two, separated volcanic islands in Denhem Bay.

During the same period there was an eruption in Calder Raul, which blew 600 meters crater through, dumping trees and covering the edge of the crater with dirt and boulders.

There was no further volcanic activity over the next 90 years, and Raoul Ilyan was busy almost continuously.

The region, devastated in the center of Raul Calder, was soon covered with trees that grow fast in the subtropical environment.

In 1954, the British government asked permission to check the hydrogen bomb on the islands of Kermadek. Although there were eruptions in 1814 and 1870, no one admitted that Raoul was a valid volcano.

Indeed, the central flat area surrounded by steep rocks (now recognized as Caldera Raul), seemed to be an excellent stain testing. Fortunately, the request was rejected by the New Zealand government for political reasons.

A number of strong earthquakes began on November 10, 1964, and by November 15, a volcanic concussion was registered.

At approximately the same time, the green lake began to heat up, and the level rose several meters. The activity gradually faded from the beginning of February 1965. The dirt expelled from the crater was limited to the central part of the Raul Calder.

All historical eruptions include explosive activities within the Raoul Calder Close to Green Lake, probably caused by the destruction of the geothermal system as a magma steps up. It seems that there is a close relationship with crater in Calder Denham, since 1814, 1870 and the eruptions of 1964 occurred there at the same time. It is very likely that there will be future eruptions from the same crater.