Volcano Eruptions 1900-2006. Volcano Facts, Volcano Information, Volcano Videos, Volcano Photos. Volcanoes are awesome manifestations of the fiery power contained deep within the Earth. These formations are essentially vents on the Earth's surface where molten rock, debris, and gases from the planet's interior are emitted. When thick magma and large amounts of gas build up under the surface, eruptions can be explosive, expelling lava, rocks and ash into the air. Less gas and more viscous magma usually mean a less dramatic eruption, often causing streams of lava to ooze from the vent. The mountain-like mounds that we associate with volcanoes are what remain after the material spewed during eruptions has collected and hardened around the vent. This can happen over a period of weeks or many millions of years. A large eruption can be extremely dangerous for people living near a volcano. Volcanoes tend to exist along the edges between tectonic plates, massive rock slabs that make up Earth's surface.
Volcanoes. List of deadly earthquakes since 1900. Magnitude (misc units) over time for deadly earthquakes since 1900 The following list compiles known earthquakes that have caused one or more fatalities since 1900. The list incorporates high quality earthquake source (i.e., origin time, location and earthquake magnitude) and fatality information from several sources. Earthquake locations are taken from the Centennial Catalog[1] and the updated Engdahl, van der Hilst and Buland earthquake catalog,[2] which is complete to December 2005.
From January 2006, earthquake locations are from the United States Geological Survey’s Preliminary Determination of Epicenters (PDE)[3] monthly listing. Preferred magnitudes are moment magnitudes taken from the Global Centroid Moment Tensor Database and its predecessor, the Harvard Centroid Moment Tensor Database. Where these magnitude estimates are unavailable, the preferred magnitude estimate is taken from the Centennial Catalog and the PDE. Five columns of fatality estimates are provided. See also[edit] List of volcanoes in Indonesia. The geography of Indonesia is dominated by volcanoes that 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,[1] Lake Toba for its supervolcanic eruption estimated to have occurred 74,000 years before present which was responsible for six years of volcanic winter,[2] and Mount Tambora for the most violent eruption in recorded history in 1815.[3] Volcanoes in Indonesia are part of the Pacific Ring of Fire.
The 150 entries in the list below are grouped into six geographical regions, four of which belong to the volcanoes of the Sunda Arc trench system. The remaining two groups are volcanoes of Halmahera, including its surrounding volcanic islands, and volcanoes of Sulawesi and the Sangihe Islands. The latter group is in one volcanic arc together with the Philippine volcanoes. Scope[edit] Major volcanoes in Indonesia Geographical groups[edit] Earthquake Lists & Maps. Largest Earthquakes in the World Since 1900. This webpage is updated in January of each year to incorporate any relevant data from the previous year. Google Earth KML References Johnson, J.M., Y. Tanioka, L.J. Ruff, K. Sataki, H. Kanamori, and L.R. Sykes, 1994, The 1957 great Aleutian earthquake, Pure and Appl. Kanamori, H., 1977, The energy release of great earthquakes, J. Kanamori, H., 1988, Importance of historical seismograms for geophysical research, in Lee, W.H.K., Meyers, H., and Shimazaki, K., eds., Historical Seismograms and Earthquakes of the World: San Diego, Academic Press, p. 16-33.
Okal, E.A., and D. Park, J., T. PDE (Preliminary Determination of Earthquakes) Monthly Listing, U.S. Revisions The Andreanof Islands, Alaska earthquake of 1957 03 09, previously listed with a magnitude o f 9.1, has had its magnitude reviewed, and it was updated to 8.6. The Ningxia-Gansu, China earthquake of 1920 12 16, previously listed with a magnitude of 8.6, has had its magnitude reviewed, and it was updated to 7.8. Rock cycle.