Tornillo event

Tornillo event

A tornillo event is a low-frequency seismic event associated with volcanoes. The term, which means "screw" in Spanish, was coined in the mid-1990s at the Observatorio Vulcanológico y Sismológico de Pasto (OVSP) in Pasto, Colombia to describe seismic events seen at the Galeras volcano.

A tornillo has the following characteristics that distinguish it from other seismic events:
* very limited distribution of frequencies (monochromatic)
* a long coda that decays slowly
* small amplitude

Like volcanic tremor, tornillos are thought to be caused by magma moving at depth.

References

# [http://cat.inist.fr/?aModele=afficheN&cpsidt=2808582 Tornillo-type seismic signals at Galeras volcano, Colombia, 1992−1993]

External links

* [http://www.ingeominas.gov.co/ Observatorio Vulcanológico y Sismológico de Pasto - INGEOMINAS]


Wikimedia Foundation. 2010.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • Tornillo — can mean:* Tornillo, Texas * tornillo event, a low frequency volcanic seismic event * Any of several species of trees in the genus Prosopis , including: ** Prosopis pubescens ** Prosopis reptans …   Wikipedia

  • tornillo — noun a) A small tree, Prosopis pubescens, native to Mexico and parts of the United States that has spirally twisted pods; the screw bean b) A low frequency seismic event associated with volcanoes …   Wiktionary

  • Galeras — Galeras, December 2005 Elevation 4,276 m (14,029 ft)  …   Wikipedia

  • First Amendment to the United States Constitution — First Amendment redirects here. For other uses, see First Amendment (disambiguation). United States of America This a …   Wikipedia

  • Good News Club v. Milford Central School — Supreme Court of the United States Argued February 28, 2001 …   Wikipedia

  • Morse v. Frederick — Supreme Court of the United States Argued March 19, 2007 Decided June 25, 2007 …   Wikipedia

  • Latin American dance — Introduction  dance traditions of Mexico, Central America, and the portions of South America and the Caribbean colonized by the Spanish and the Portuguese. These traditions reflect the distinctive mixtures of indigenous (Amerindian), African, and …   Universalium

  • Las Cruces, New Mexico — Infobox Settlement name = Las Cruces settlement type=Incorporated City official name = City of Las Cruces settlement type = City nickname = The City of the Crosses imagesize = image caption = Las Cruces from I 10 image image mapsize = 250px map… …   Wikipedia

  • Miller v. California — Davis v. California Supreme Court of the United States Argued January 18–19, 1972 Reargued November …   Wikipedia

  • Héctor Garza — Infobox Wrestler|name=Héctor Solano Segura names=Héctor Garza Héctor Garza, Jr. height=height|m=1.80 weight=convert|95|kg|lb st|abbr=on|lk=on birth date = birth date and age|1969|06|12 death date = birth place = Monterrey, Nuevo León death place …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”