Koryaksky
Koryaksky volcano towers over Avacha Bay
Elevation:	3,456 metres (11,340 feet)
Location:	Kamchatka, Russia
Coordinates:	53°19′N, 158°41′W
Type:	Stratovolcano
Age of rock:
Last eruption:	1957

Koryaksky is a volcano on the Kamchatka Peninsula in the far east of Russia. It lies within sight of the capital of Kamchatka Oblast, Petropavlovsk-Kamchatsky. Together with neighbouring Avachinsky volcano, it has been designated a Decade Volcano, worthy of particular study in light of its history of explosive eruptions and proximity to populated areas. Download high resolution version (2048x1536, 826 KB)View of Petropavlovsk-Kamchatskys harbour from Avacha Bay, with Mount Koryasky rising in the background. ... A topographical summit is a point on a surface which is higher in elevation than all points immediately adjacent to it. ... Kamchatka is the land of volcanoes. ... 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. ... Mountains can be characterized in several ways. ... Stratovolcano Lanín in the border between Argentina and Chile. ... The geologic 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. ... Eruption redirects here. ... 1957 (MCMLVII) was a common year starting on Tuesday of the Gregorian calendar. ... Eruption redirects here. ... Kamchatka is the land of volcanoes. ... For other uses of Kamchatka, see Kamchatka (disambiguation). ... Petropavlovsk, as seen from Avacha Bay The city of Petropavlovsk-Kamchatskiy (Петропавловск-Камчатский) (pop. ... Avachinsky is a volcano on the Kamchatka Peninsula in the far east of Russia. ... A map showing locations of the 16 Decade Volcanoes The Decade Volcanoes are 16 volcanoes identified by the International Association of Volcanology and Chemistry of the Earths Interior (IAVCEI) as being worthy of particular study in light of their history of large, destructive eruptions and proximity to populated areas. ...

Geological history

Koryaksky lies on the Pacific Ring of Fire, at a point where the Pacific Plate is sliding underneath the Eurasian Plate at a rate of about 80 mm/year. A wedge of mantle material lies between the subducting Pacific Plate and the overlying Eurasian Plate is the source of dynamic volcanism over the whole Kamchatka Peninsula. For other meanings of Pacific, see Pacific (disambiguation). ... The phrase Ring of Fire could refer to: Ring of Fire (anthology), a book of short stories edited by Eric Flint Ring of Fire (film series), a 1988 series of documentaries by Lawrence Blair and Lorne Blair about their voyages throughout the Pacific Islands Ring of Fire (IMAX film), a... The Pacific plate is shown in pale yellow on this map The Pacific Plate is an oceanic tectonic plate beneath the Pacific Ocean. ... The Eurasian plate is shown in green on this map. ... A Mantle is a piece of clothing, similar to a robe but open on the front side and often sleeveless. ... Subduction zones mark sites of convective downwelling of the Earths lithosphere. ...

The volcano has probably been active for at tens of thousands of years. Geological records indicate that there have been three major eruptions in the last 10,000 years, at 5500 BC, 1950 BC and 1550 BC. These three eruptions seem to have been mainly effusive, generating extensive lava flows. (7th millennium BC – 6th millennium BC – 5th millennium BC – other millennia) Events c. ... (Redirected from 1950 BC) (21st century BC - 20th century BC - 19th century BC - other centuries) (3rd millennium BC - 2nd millennium BC - 1st millennium BC) Events 2064 - 1986 BC -- Twin Dynasty wars in Egypt 2000 BC -- Farmers and herders travel south from Ethiopia and settle in Kenya. ... (Redirected from 1550 BC) Centuries: 17th century BC - 16th century BC - 15th century BC Decades: 1600s BC 1590s BC 1580s BC 1570s BC 1560s BC - 1550s BC - 1540s BC 1530s BC 1520s BC 1510s BC 1500s BC Events and Trends The city of Mycenae, located in the northeast Peloponnesus, came... In computer programming jargon, lava flow is a problem in which computer code, usually written under less than optimal conditions, is put into production and then built on when still in a developmental state. ...

Recent activity

Clouds forming over Koryakasky

Koryaksky erupted for the first time in recorded history in 1890, in an eruption characterised by the emission of lava from fissures which opened up on the south western flank of the volcano, and phreatic explosions. It was thought to have erupted again five years later, but it was later shown that no eruption had occurred; what was thought to be an eruption column was simply steam generated by strong fumarolic activity. Image File history File links Koryaksky_volcano. ... Image File history File links Koryaksky_volcano. ... 1890 was a common year starting on Wednesday (see link for calendar). ... Fissure (Latin fissura, Plural fissurae) is a groove, natural division, deep furrow, or cleft found in the brain, spinal cord, and liver; or a tear in the anus. ... Phreatic eruption at the summit of Mount St. ... Eruption column over Mount Pinatubo in the Philippines An eruption column consists of hot volcanic ash emitted during an explosive volcanic eruption. ... Sulfur deposits near a fumarole A fumarole (Latin fumus, smoke) is an opening in Earths (or any other astronomical bodys) crust, often in the neighborhood of volcanoes, which emit steam and gases such as carbon dioxide, sulfur dioxide, hydrochloric acid, and hydrogen sulfide. ...

Another brief, moderately explosive eruption occurred in 1926, after which the volcano was dormant until 1956. The 1956 eruption was more explosive than the previous known eruptions, with VEI=3, and generated pyroclastic flows and lahars. The eruption continued until June 1957. 1926 (MCMXXVI) was a common year starting on Friday (link will take you to calendar). ... Towering over the city of Naples, Vesuvius is dormant but certainly not extinct .A dormant volcano is one which is not currently erupting, but is believed to still be capable of erupting. ... 1956 (MCMLVI) was a leap year starting on Sunday of the Gregorian calendar. ... 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. ... Pyroclastic flows sweep down the flanks of Mayon Volcano, Philippines, in 1984 Pyroclastic flows are a common and devastating result of some volcanic eruptions. ... A lahar is a mixture of rock, mud, water and usually debris that flows down from a volcano (or occasionally other mountains), typically along a river valley. ... June is the sixth month of the year in the Gregorian Calendar, with a length of 30 days The month is named after the Roman goddess Juno, wife of Jupiter and equivalent to the Greek goddess Hera. ... 1957 (MCMLVII) was a common year starting on Tuesday of the Gregorian calendar. ...

Since then, the volcano has seen no further eruptions, but occasional seismic activity and ongoing fumarolic activity has indicated that the volcano is still active. In light of its proximity to Petropavlovsk-Kamchatsky, Koryaksky was designated a Decade Volcano in 1996 as part of the United Nations' International Decade for Natural Disaster Reduction, together with the nearby Avachinsky volcano. A map showing locations of the 16 Decade Volcanoes The Decade Volcanoes are 16 volcanoes identified by the International Association of Volcanology and Chemistry of the Earths Interior (IAVCEI) as being worthy of particular study in light of their history of large, destructive eruptions and proximity to populated areas. ... 1996 (MCMXCVI) is a leap year starting on Monday of the Gregorian calendar, and was designated the International Year for the Eradication of Poverty. ... Main article: League of Nations The term United Nations was coined by Franklin D. Roosevelt during World War II, to refer to the Allies. ... Avachinsky is a volcano on the Kamchatka Peninsula in the far east of Russia. ...

References

Koryaksky seen from neighbouring Avachinsky's peak

1. Droznin D., Levin V., Park J., Gordeev E. (2002), Detailed Mapping of Seismic Anisotropy Indicators in Southeastern Kamchatka, American Geophysical Union, Fall Meeting 2002
2. Levin V., Park J., Gordeev E., Droznin D. (2002), Complex Anisotropic Structure of the Mantle Wedge Beneath Kamchatka Volcanoes, American Geophysical Union, Fall Meeting 2002
3. Taran Y.A., Connor C.B., Shapar V.N., Ovsyannikov A.A., Bilichenko A.A. (1997), Fumarolic activity of Avachinsky and Koryaksky volcanoes, Kamchatka, from 1993 to 1994, Bulletin of Volcanology, v. 58, p. 441-448

Image File history File links Koryaksky_volcano. ... Image File history File links Koryaksky_volcano. ...

External links

• VolcanoWorld information
• Global Volcanism Program information
• Pravda article about seismic activity at Koryaksky