Novarupta
Novarupta Lava Dome, July 1987
Elevation:	2,759 feet (841 metres)
Location:	Alaska, USA
Range:	Aleutian Range
Coordinates:	58°16′0″N, 155°9′24″WCoordinates: 58°16′0″N, 155°9′24″W
Topo map:	USGS Mount Katmai B-4
Type:	Caldera
Age of rock:
Last eruption:	1912

Novarupta, meaning "new eruption", is a volcano located on the Alaska Peninsula in the Katmai area, about 290 miles southwest of Anchorage. Novarupta sits below Mount Katmai. Its eruption of June 6-June 8, 1912, was ten times more powerful than the 1980 eruption of Mount St. Helens and led to the formation of this 841 metre (2759 ft) volcano. Novarupta lava dome in Katmai National Park. ... A topographical summit is a point on a surface which is higher in elevation than all points immediately adjacent to it. ... Official language(s) English Capital Juneau Largest city Anchorage Area  Ranked 1st  - Total 663,267 sq mi (1,717,854 km²)  - Width 808 miles (1,300 km)  - Length 1,479 miles (2,380 km)  - % water 13. ... A mountain range (Sierra in the Spanish language) is a group of mountains bordered by lowlands or separated from other mountain ranges by passes or rivers. ... The Aleutian Range is the mountain range of the Alaska Peninsula in southeast Alaska. ... Map of Earth showing lines of latitude (horizontally) and longitude (vertically); large version (pdf) The geographic (earth-mapping) coordinate system expresses every horizontal position on Earth by two of the three coordinates of a spherical coordinate system which is aligned with the spin axis of the Earth. ... Map of Earth showing lines of latitude (horizontally) and longitude (vertically); large version (pdf) The geographic (earth-mapping) coordinate system expresses every horizontal position on Earth by two of the three coordinates of a spherical coordinate system which is aligned with the spin axis of the Earth. ... Example of a topographic map with contour lines Topographic maps, also called contour maps, topo maps or topo quads (for quadrangles), are maps that show topography, or land contours, by means of contour lines. ... The United States Geological Survey (USGS) is a scientific agency of the United States government. ... Mountains can be characterized in several ways. ... Crater Lake, Oregon A caldera is a volcanic feature formed by the collapse of a volcano into itself. ... // The geological time scale is used by geologists and other scientists to describe the timing and relationships between events that have occurred during the history of the Earth. ... A volcano is a geological landform usually generated by the eruption through a planets surface of magma, molten rock welling up from the planets interior. ... 1912 (MCMXII) was a leap year starting on Monday in the Gregorian calendar (or a leap year starting on Tuesday in the 13-day-slower Julian calendar). ... A volcano is a geological landform usually generated by the eruption through a planets surface of magma, molten rock welling up from the planets interior. ... Volcanoes on the Alaska Peninsula The Alaska Peninsula is a peninsula extending about 800 km (500 miles) to the southwest from the mainland of Alaska and ending in the Aleutian Islands. ... Katmai National Park and Preserve is a United States National Park in Alaska, notable for the Valley of Ten Thousand Smokes and for its brown bears. ... Flag Nickname: The City of Lights and Flowers Location Location in the state of Alaska Government Borough Municipality of Anchorage Mayor Mark Begich Geographical characteristics Area    - City 1,961. ... This article is about Katmai, the volcano. ... June 6 is the 157th day of the year in the Gregorian calendar (158th in leap years), with 208 days remaining. ... June 8 is the 159th day of the year in the Gregorian Calendar (160th in leap years), with 206 days remaining. ... 1912 (MCMXII) was a leap year starting on Monday in the Gregorian calendar (or a leap year starting on Tuesday in the 13-day-slower Julian calendar). ... Eruption of Mount St. ...

The 1912 Novarupta eruption was the largest volcanic eruption of the 20th century. About 15 km³ of volcanic material was ejected. The 1815 eruption of Tambora however, had displaced about seven times as much material. The 1883 eruption of Indonesia's Krakatoa displaced twice as much as Novarupta. Novarupta's 1912 eruption has been rated a 6 on the Volcanic Explosivity Index. Magma from underneath the Mount Katmai area was drained away to Novarupta, resulting in a collapsed 3 x 4 km caldera. The 1912 eruption of the Novarupta volcano occurred on June 6, 1912 in what is now Katmai National Park and Preserve in Alaska. ... The Battle of New Orleans 1815 was a common year starting on Sunday (see link for calendar). ... Mount Tambora is a stratovolcano on the Indonesian island of Sumbawa. ... 1883 (MDCCCLXXXIII) was a common year starting on Monday (see link for calendar). ... Krakatoa (Indonesian name: Krakatau) is a volcanic island in the Sunda Strait between Java and Sumatra in Indonesia. ... VEI and ejecta volume correlation The Volcanic Explosivity Index (VEI) was devised by Chris Newhall of the U.S. Geological Survey and Steve Self at the University of Hawaii in 1982 to provide a relative measure of the explosiveness of volcanic eruptions. ... Magma is molten rock located beneath the surface of the Earth (or any other rocky planet), and which often collects in a magma chamber. ... This article is about Katmai, the volcano. ... Crater Lake, Oregon A caldera is a volcanic feature formed by the collapse of a volcano into itself. ...

Map showing volcanoes of Alaska.

The lava dome that formed to plug the vent from which the eruption occurred is what is now referred to as Novarupta. Pyroclastic ash flow from the eruption formed what was named the Valley of Ten Thousand Smokes by botanist Robert F. Griggs, who explored the volcano's aftermath for the National Geographic Society in 1916. Katmai National Park and Preserve was formed to protect the area around Novarupta. Image File history File links Map of Alaska Peninsula volcanoes. ... Image File history File links Map of Alaska Peninsula volcanoes. ... In volcanology, a lava dome is mound-shaped growth resulting from the eruption of high-silica lava (such as rhyolite) from a volcano. ... Pyroclastic rocks are formed from lavas which are ejected into the air, as occur in pyroclastic flows or Plinian eruptions. ... The Valley of Ten Thousand Smokes is a valley within Katmai National Park and Preserve in Alaska which is filled with ash flow from the eruption of Novarupta on June 6-June 8, 1912. ... Robert Fiske Griggs was a botanist who led a 1916 National Geographic Society expedition to observe the aftermath of the Katmai volcanic eruption. ... Flag of the National Geographic Society The National Geographic Society, which is based in the United States, is one of the worlds largest not-for-profit educational and scientific organizations, with a mission to advance the general knowledge of geography and the world among the general public. ... 1916 (MCMXVI) was a leap year starting on Saturday (link will take you to calendar). ... Katmai National Park and Preserve is a United States National Park in Alaska, notable for the Valley of Ten Thousand Smokes and for its brown bears. ...

External links

• USGS collection of descriptions of Novarupta
• Alaska Volcano Observatory
• USGS QuickTime video clip on Novarupta (36 seconds/0.8 MB)
• Smithsonian Institution's Global Volcanism Program - Novarupta