The Pacific Ring of Fire is an area where large numbers of earthquakes and volcanic eruptions occur in the basin of the Pacific Ocean. In a 40,000 km horseshoe shape, it is associated with a nearly continuous series of oceanic trenches, volcanic arcs, and volcanic belts and plate movements. The Ring of Fire has 452 volcanoes and is home to over 75% of the world’s active and dormant volcanoes. It is sometimes called the circum-Pacific belt or the circum-Pacific seismic belt.
In the ring of fire only a few of its parts are curved in the ring’s direction. The most of its parts are curved in the opposite direction. According with the theory of a group of Australian scientists the curve of each part depends on its length. Usually the parts with less than 3000km length are curved in the opposite direction.To understand this theory is important to know that all the subducted plate is recycled inside the Earth. So this plate is ended in the border of the plate on the Earth’s surface. In this process once the plate goes in the mantle the materials which wrap it can flow around the plate.As the plate is subducted into the inside of the Earth it is also bended because of the mantle materials that are flowing around it. This deformation is showed in the surface as de curved subduction zone. That’s why the arch usually goes back related with the tectonic plate movement.
Japan: Ten percent of the world’s active volcanoes are found in Japan, which lies in a zone of extreme crustal instability. They are formed by subduction of the Pacific and Philippine plates. As many as 1,500 earthquakes are recorded yearly, and magnitudes of four to six on the Richter scale are not uncommon. Minor tremors occur almost daily in one part of the country or another, causing slight shaking of buildings. Major earthquakes occur infrequently; the most famous in the twentieth century were: the great Kantō earthquake of 1923, in which 130,000 people died; and the Great Hanshin Earthquake of 17th January 1995, in which 6,434 people died.
Mexico: Volcanoes of Mexico are related to subduction of the Cocos and Rivera plates to the east, which has produced large explosive eruptions. Most active volcanoes in Mexico occur in the Trans-Mexican Volcanic Belt, which extends 900 kilometres (559 mi) from west to east across central-southern Mexico
Canada: Although little-known to the general public, British Columbia and Yukon Territory are home to a vast region of volcanoes and volcanic activity in the Pacific Ring of Fire. Several mountains that many British Columbians look at every day are dormant volcanoes. Most of them have erupted during the Pleistocene and Holocene.
Kamchatka Peninsula: The Kamchatka Peninsula in the Russian Far East, is one of the most various and active volcanic areas in the world, with an area of 472,300 km². This is where rapid subduction of the Pacific Plate fuels the intense volcanism
The volcanoes in Indonesia are among the most active of the Pacific Ring of Fire. They are formed due to subduction zones between the Eurasian Plate and the Indo-Australian Plate. Some of the volcanoes are notable for their eruptions, for instance, Krakatau for its global effects in 1883, Lake Toba for its super volcanic eruption which was responsible for six years of volcanic winter, and Mount Tambora for the most violent eruption in recorded history in 1815.