Table of Contents
- 1 What type of eruption does Oshima produce?
- 2 When did the Oshima volcano last erupt?
- 3 What kind of eruptions do volcanoes have?
- 4 What caused the Oshima volcano?
- 5 How old is the Oshima Japan volcano?
- 6 What are the 7 types of volcano?
- 7 What does Oshima mean?
- 8 Is Tokyo a city in Japan?
- 9 How big was the eruption of the Oshima volcano?
- 10 When did the Nishi yama volcano erupt in Japan?
What type of eruption does Oshima produce?
stratovolcanoes
Oshima-Oshima, a small, 4-km-wide Japan Sea island 55 km west of the SW tip of Hokkaido, is the emergent summit of two coalescing basaltic-to-andesitic stratovolcanoes. Higashiyama, at the east end of the island, is cut by a 2-km-wide caldera covered on its west side by Nishiyama volcano.
When did the Oshima volcano last erupt?
Similar earthquake swarms occurred in January 1972 and November 1973. Ten minor explosive eruptions have occurred at Oshima since 1962, the latest [in 1974]. Table 1….November 1977 (NSEB 02:11) Cite this Report.
| Date | Felt Earthquakes | Recorded Earthquakes |
|---|---|---|
| 17 Nov 1977 | 3 | 242 |
What kind of eruptions do volcanoes have?
There are two types of eruptions in terms of activity, explosive eruptions and effusive eruptions. Explosive eruptions are characterized by gas-driven explosions that propels magma and tephra. Effusive eruptions, meanwhile, are characterized by the outpouring of lava without significant explosive eruption.
What are the 4 types of volcanic eruptions?
There are four types of eruptions with properties determined mostly by the silica content of magma, and the amount of gas it contains. In order of increasing explosiveness, these are Hawai’ian, Strombolian, Vulcanian, and Plinian eruptions.
How old is Oshima?
Although Oshima is a dominantly basaltic volcano, strong explosive activity has occurred at intervals of 100-150 years throughout the past few thousand years. Historical activity at Oshima dates back to the 7th century AD.
What caused the Oshima volcano?
The western cone partially collapsed during an eruption in 1741, creating a large horseshoe-shaped caldera breached to the north and extending from the summit down to the sea floor at the base of the volcano.
How old is the Oshima Japan volcano?
What are the 7 types of volcano?
What are the Different Types of Volcanoes?
- Cinder Cone Volcanoes: These are the simplest type of volcano.
- Composite Volcanoes: Composite volcanoes, or stratovolcanoes make up some of the world’s most memorable mountains: Mount Rainier, Mount Fuji, and Mount Cotopaxi, for example.
- Shield Volcanoes:
- Lava Domes:
What type of volcano has the least violent eruption?
Shield volcanoes are built by many layers over time and the layers are usually of very similar composition. The low viscosity also means that shield eruptions are non-explosive.
What is the difference between magma and lava?
Magma is extremely hot liquid and semi-liquid rock located under Earth’s surface. When magma flows onto Earth’s surface, it is called lava.
What does Oshima mean?
large island
(Oshima): ‘large island’. Japan has islands of all sizes and many families have taken the name.
Is Tokyo a city in Japan?
Tokyo, formerly (until 1868) Edo, city and capital of Tokyo to (metropolis) and of Japan. It is located at the head of Tokyo Bay on the Pacific coast of central Honshu. It is the focus of the vast metropolitan area often called Greater Tokyo, the largest urban and industrial agglomeration in Japan.
How big was the eruption of the Oshima volcano?
Oshima-Oshima’s eruption in 1741 caused a tsunami that killed almost 1500 people. Oshima-Oshima is the small emergent summit of two overlapping basaltic-to-andesitic stratovolcanoes: Higashi-yama at the east end of the island is cut by a 2-km-wide caldera covered on its west side by Nishi-yama volcano.
What kind of volcano is Higashiyama on Oshima Island?
Oshima-Oshima, a small, 4-km-wide Japan Sea island 55 km west of the SW tip of Hokkaido, is the emergent summit of two coalescing basaltic-to-andesitic stratovolcanoes. Higashiyama, at the east end of the island, is cut by a 2-km-wide caldera covered on its west side by Nishiyama volcano.
How big is the Oshima volcano in Sagami Bay?
Oshima volcano in Sagami Bay, east of the Izu Peninsula, is the northernmost of the Izu Islands. The broad, low stratovolcano forms an 11 x 13 km island and was constructed over the remnants of three dissected stratovolcanoes. It is capped by a 4-km-wide caldera with a central cone, Mihara-yama, that has been the site…
When did the Nishi yama volcano erupt in Japan?
An eruption in August 1741 produced heavy ashfall on the Hokkaido mainland. A violent explosion and landsliding from the Nishi-yama cone accompanied a large tectonic earthquake and a major tsunami that killed 1,475 people, most on the W coast of the Oshima Peninsula.