Earthquakes often occur in the volcanic islands like, New Zealand , Indonesia , Philippines , Japan and Aleutian which surround the Pacific Ocean and on the land surfaces of Oregon , California , Mexico , Peru and Chile .
At present, there are five hundred and sixty two active volcanoes in the volcanic islands which surround the Pacific Ocean and on the land areas!
In the year 2004, within a span of ten days, Oregon City in North America experienced tremors more than six hundred times. Similarly in the year 2005, within a fortnight the earth tremors were experienced more than thousand times.
In the year 1981, a research team headed by Dr. Robert Empley conducted a survey in which 300 miles away from the sea shore of Oregon near the ocean floor and discovered that a large amount of minerals were dissolved in the water. At that time there were no volcanoes found in that area.
But, later after nine years in 1989, within the area of ten miles, ten new volcanoes were discovered by the research team!
Hence, it is proved that the rising of volcanoes from the land results in earthquakes.
But, Researchers give a different explanation for the earthquakes that occur in Japan , which is situated on the north western part of the Pacific Ocean .
Researchers are under the opinion that the floor of the Pacific Ocean is constantly moving towards north western direction. While the floor of the Pacific Ocean is moving thus, it slides just below Japan , causing the rocky plates to brush against each other and this results in tremors.
Researchers, who are of the opinion that the floor of the Pacific Ocean is constantly moving towards north western direction, point out to the line of volcanic islands of Hawaii which are situated on the pacific sea floor in the north western -south eastern direction ,to prove their statement.
The Researchers are of the opinion that in one part of the Pacific Ocean region, the molten rock material found inside the earth gushed out to form a volcano. At the same time, as the floor of the ocean was moving towards north western direction, the volcano too moved along with it. While the sea floor was thus moving, in the area which came above the volcanic hot spot where a volcano was already formed, a new volcano emerged and kept moving in north western direction. This has been repeated several times and resulted in the formation of numerous volcanoes towards the south eastern direction.
But, in reality the floor of the Pacific Ocean is still in its original position only!
Another row of volcanic islands known as Line Islands are found at a distance of one thousand miles south of the volcanic islands of Hawaii.
As stated by Researchers if the floor of the Pacific Ocean was moving towards north western direction, the volcanic Line Islands found near the volcanic islands of Hawaii should be situated parallel to the volcanic islands of Hawaii .
But, the volcanic Line Islands are not parallel to the volcanic islands of Hawaii .
Line Islands deviate slightly and are away from the islands of Hawaii .
So, it is proved by the line of islands which are situated in different directions, that the floor of the Pacific Ocean is not moving as stated by Researchers.
Hence, the frequent occurrence of earthquakes in the volcanic islands of New Zealand , Indonesia , Philippines and Japan is only due to the occasional rising of volcanoes and the land area which surrounds them.