{"ID":732,"name":"Fourpeaked","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":"312260","country":"United States","geodetic_measurements":"Yes","deformation_observation":"Yes","duration_of_observation":"2003 - 2010","characteristics_of_deformation":"
Deformation observed at Fourpeaked\u00a0covers both the\u00a0Douglas and \u00a0Fourpeaked areas. InSAR measurements show broad inflation of this region between 2003\u20132010, with deformation mostly vertical. This deformation is modelled by a Mogi source of poorly constrained depth (5 – 10 km). Fixing the depth to that of local seismicity (7 km) yields\u00a0an average rate of volume change of ~0.004 km\u00b3\/year. Deformation is attributed to magmatic intrusion (possibly episodic), or\u00a0isostatic rebound as the ice cap thins and recedes.\u00a0<\/span><\/p>\n","latitude":"58.77","longitude":"-153.672","images":[{"path":"\/nas\/content\/live\/cometnerc\/wp-content\/uploads\/figures_sentinel\/fourpeaked\/fourpeaked_131D_03202_031313.jpg","url":"https:\/\/comet.nerc.ac.uk\/wp-content\/uploads\/figures_sentinel\/fourpeaked\/fourpeaked_131D_03202_031313.jpg","width":750,"height":1110,"mime":"image\/jpeg","size":260552,"filename":"fourpeaked_131D_03202_031313.jpg"},{"path":"\/nas\/content\/live\/cometnerc\/wp-content\/uploads\/figures_sentinel\/fourpeaked\/fourpeaked_131D_03199_051313.jpg","url":"https:\/\/comet.nerc.ac.uk\/wp-content\/uploads\/figures_sentinel\/fourpeaked\/fourpeaked_131D_03199_051313.jpg","width":501,"height":669,"mime":"image\/jpeg","size":165200,"filename":"fourpeaked_131D_03199_051313.jpg"},{"path":"\/nas\/content\/live\/cometnerc\/wp-content\/uploads\/figures_sentinel\/fourpeaked\/fourpeaked_036A_03033_131312.jpg","url":"https:\/\/comet.nerc.ac.uk\/wp-content\/uploads\/figures_sentinel\/fourpeaked\/fourpeaked_036A_03033_131312.jpg","width":501,"height":667,"mime":"image\/jpeg","size":165903,"filename":"fourpeaked_036A_03033_131312.jpg"}],"uri":"https:\/\/comet.nerc.ac.uk\/volcanoes\/fourpeaked\/","api_endpoint":"https:\/\/comet.nerc.ac.uk\/wp-json\/volcanodb\/v1\/volcano\/732","measurement_methods":"InSAR","inferred_causes":"Magmatic, isostatic rebound","references":["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=Fourpeaked"],"date_added":"2015-03-17 15:11:11","last_modified":"2015-03-17 15:11:11"}