phreatic
All posts tagged phreatic
Looking across Taipei City to lava domes of the Tatun (Datun) Volcano Group. Image courtesy Alexander Belousov, 2008 via Smithsonian GVP
The Tatun (Datun) Volcanic Group (TVG) is a number of andesitic lava domes in the northern portion of the island of Taiwan. There are at least 20 volcanoes, the southernmost (and largest) of which are located only 15 km N of Taipei City. This puts over 5 million within 5 km of the field and nearly 8 million within 30 km.
Airborne view of Mount Hakone volcano. Lake Ashi in the foreground. Image courtesy Wiki
Ontake shortly after phreatic eruption on Sept 27. Photo courtesy EOS.org, 2017
White Island from helo Dec 10, the day after the eruption. Note the new cover of ash, residual steam from the crater, and the significant outflow of mud into the surrounding ocean. Image courtesy RNZ.co
Mount Ruapehu in eruption during 1995 eruption sequence. Image courtesy TRTWorld blog, 2016
Fourpeaked eruption Sept. 17, 2006. Mount Douglas is the larger volcano to the right. Note dual sources for eruptive plume. Photo taken by Lanny Simpson, Alaska High Mountain Images via AVO
Panoramic photo of Lake Toya and Toya Caldera looking west. Nakajima Island(s) are located in the lake in the right portion of the image. Usu volcano is left of the lake straddling the land between the lake to the right and the ocean to the left. Image courtesy Toya-Usu UNESCO Global Geopark
Anak Krakatau a week following flank collapse eruption Dec. 22. The vent region has not yet been rebuilt above water level. Highest remaining part of the island is the hyaloclastic ring that used to host the most recent cone. Note also the island has been resurfaced and grown a bit. Image courtesy BBC News, Jan. 3 https://www.bbc.com/news/science-environment-46743362https://www.bbc.com/news/science-environment-46743362
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