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English: Apoyeque Volcano, Nicaragua is featured in this image photographed by an Expedition 38 crew member on the International Space Station.
  • The Chiltepe Peninsula, highlighted in this photograph, extends into Lake Managua in west-central Nicaragua. The peninsula is formed from part of a large ignimbrite shield, a geologic structure created by deposition of primarily low density materials (such as pumice) ejected during violent, explosive eruptive activity. Ignimbrite deposits are most commonly emplaced during large pyroclastic flows - gravity-driven mixtures of rock, ash, and volcanic gases that can cover hundreds of kilometers at speeds of hundreds of kilometers per hour - with ignimbrite shields formed over geologic time by successive flows.
  • The Apoyeque caldera, filled with a 2.8-kilometer-wide and 400-meter-deep lake, dominates the center of the peninsula. Geological evidence indicates that Apoyeque last erupted around 50 BCE (plus or minus 100 years). The Laguna Xiloa maar - a volcanic crater formed by the explosive interaction of magma and groundwater - is located immediately to the southeast of Apoyeque and is also filled with a lake. According to scientists, Laguna Xiloa last erupted approximately 6,100 years ago.
  • More recently, a swarm of small earthquakes was detected near Apoyeque in 2012. These seismic swarms, when detected in volcanically active areas, may indicate movement of magma prior to an eruption. The capital city of Managua, not visible in the image, is located approximately 15 kilometers to the southeast of Apoyeque, while the town of Bosques de Xiloa is considerably closer (approximately four kilometers).
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Källa https://www.flickr.com/photos/nasa2explore/12287517865/
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This image or video was catalogued by Johnson Space Center of the United States National Aeronautics and Space Administration (NASA) under Photo ID: ISS038-E-035123.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.
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This file is in the public domain in the United States because it was created by the Image Science & Analysis Laboratory, of the NASA Johnson Space Center. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (NASA media use guidelines or Conditions of Use of Astronaut Photographs). Photo source: ISS038-E-035123.

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nuvarande27 juni 2014 kl. 01.08Miniatyrbild för versionen från den 27 juni 2014 kl. 01.086 048 × 4 032 (2,48 Mbyte)Ras67levels adjusted
27 juni 2014 kl. 00.53Miniatyrbild för versionen från den 27 juni 2014 kl. 00.536 048 × 4 032 (1,64 Mbyte)Ras67== {{int:filedesc}} == {{Information |Description={{en|1=Apoyeque Volcano, Nicaragua is featured in this image photographed by an Expedition 38 crew member on the International Space Station. * The Chiltepe Peninsula, highlighted in this photograph, ex...

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