{"ID":5210,"name":"Aniakchak","location":[{"name":"Alaska","url":"https:\/\/comet.nerc.ac.uk\/location\/alaska\/","slug":"alaska","id":45,"api_endpoint":"https:\/\/comet.nerc.ac.uk\/wp-json\/volcanodb\/v1\/location\/45"}],"volcano_number":"312090","country":"United States","geodetic_measurements":"Yes","deformation_observation":"Yes","duration_of_observation":"1992 - 2010","characteristics_of_deformation":"
InSAR measurements show that\u00a0the caldera floor of Aniakchak volcano has subsided. The rate of subsidence decreased from ~12 mm\/yr during 1992 – 2000 to ~8 mm\/yr during 2000 – 2005 and ~6 mm\/yr during 2005 – 2010. The deformation is modelled by a point source at shallow depth (2 – 4 km). Evidence from melt inclusions show that this is\u00a0equal to preeruptive magma storage depths at the volcano. Subsidence may therefore be due to crystallisation or fluid loss from a shallow magma body. Another possible cause is\u00a0a decrease in pore fluid pressure due to cooling or fluid loss from the hydrothermal system.<\/p>\n","latitude":"56.88","longitude":"-158.17","images":[{"path":"\/nas\/content\/live\/cometnerc\/wp-content\/uploads\/figures_sentinel\/aniakchak\/aniakchak_102D_03323_081113.jpg","url":"https:\/\/comet.nerc.ac.uk\/wp-content\/uploads\/figures_sentinel\/aniakchak\/aniakchak_102D_03323_081113.jpg","width":750,"height":1110,"mime":"image\/jpeg","size":276016,"filename":"aniakchak_102D_03323_081113.jpg"},{"path":"\/nas\/content\/live\/cometnerc\/wp-content\/uploads\/figures_sentinel\/aniakchak\/aniakchak_102D_03311_000303.jpg","url":"https:\/\/comet.nerc.ac.uk\/wp-content\/uploads\/figures_sentinel\/aniakchak\/aniakchak_102D_03311_000303.jpg","width":501,"height":668,"mime":"image\/jpeg","size":168039,"filename":"aniakchak_102D_03311_000303.jpg"},{"path":"\/nas\/content\/live\/cometnerc\/wp-content\/uploads\/figures_sentinel\/aniakchak\/aniakchak_102D_03341_121118.jpg","url":"https:\/\/comet.nerc.ac.uk\/wp-content\/uploads\/figures_sentinel\/aniakchak\/aniakchak_102D_03341_121118.jpg","width":501,"height":669,"mime":"image\/jpeg","size":167557,"filename":"aniakchak_102D_03341_121118.jpg"},{"path":"\/nas\/content\/live\/cometnerc\/wp-content\/uploads\/figures_sentinel\/aniakchak\/aniakchak_153A_03412_061209.jpg","url":"https:\/\/comet.nerc.ac.uk\/wp-content\/uploads\/figures_sentinel\/aniakchak\/aniakchak_153A_03412_061209.jpg","width":501,"height":663,"mime":"image\/jpeg","size":153966,"filename":"aniakchak_153A_03412_061209.jpg"},{"path":"\/nas\/content\/live\/cometnerc\/wp-content\/uploads\/figures_sentinel\/aniakchak\/aniakchak_007A_03294_131613.jpg","url":"https:\/\/comet.nerc.ac.uk\/wp-content\/uploads\/figures_sentinel\/aniakchak\/aniakchak_007A_03294_131613.jpg","width":501,"height":668,"mime":"image\/jpeg","size":170700,"filename":"aniakchak_007A_03294_131613.jpg"},{"path":"\/nas\/content\/live\/cometnerc\/wp-content\/uploads\/figures_sentinel\/aniakchak\/aniakchak_102D_03323_121113.jpg","url":"https:\/\/comet.nerc.ac.uk\/wp-content\/uploads\/figures_sentinel\/aniakchak\/aniakchak_102D_03323_121113.jpg","width":501,"height":668,"mime":"image\/jpeg","size":168285,"filename":"aniakchak_102D_03323_121113.jpg"}],"uri":"https:\/\/comet.nerc.ac.uk\/volcanoes\/aniakchak\/","api_endpoint":"https:\/\/comet.nerc.ac.uk\/wp-json\/volcanodb\/v1\/volcano\/5210","measurement_methods":"InSAR","inferred_causes":"Hydrothermal, Magmatic","references":["Kwoun, Oh-Ig, Lu, Zhong, Neal, Christina, and Wicks, Charles Jr., 2006, Quiescent deformation of the Aniakchak Caldera, Alaska, mapped by InSAR: Geology, v. 34, n. 1, p. 5-8.","Lu, Z., and Dzurisin, D., 2014, InSAR imaging of Aleutian volcanoes: Chichester, UK, Springer-Praxis, 390 p.","U.S. Geological Survey Alaska Volcano Observatory (AVO) website
\nhttp:\/\/www.avo.alaska.edu\/volcanoes\/volcinfo.php?volcname=Aniakchak"],"date_added":"2015-04-07 11:21:40","last_modified":"2015-04-07 11:21:40"}