{"ID":1797,"name":"Ischia","location":[{"name":"Mediterranean and W. Asia","url":"https:\/\/comet.nerc.ac.uk\/location\/mediterranean-and-w-asia\/","slug":"mediterranean-and-w-asia","id":48,"api_endpoint":"https:\/\/comet.nerc.ac.uk\/wp-json\/volcanodb\/v1\/location\/48"}],"volcano_number":"211030","country":"Italy","geodetic_measurements":"Yes","deformation_observation":"Yes","duration_of_observation":"","characteristics_of_deformation":"
Sepe et al. (2007) present levelling surveys carried out between 1990 and 2003 on the Mt Epomeo resurgent block (Ischia Island). They record negative dislocations on its northern and southern flanks with a maximum subsidence rate of 1.27\u00a0cm\u00a0yr<\/span>\u22121<\/sup>. <\/span>
\nThe authors show that\u00a0deformation is not associated with the cooling, crystallization or lateral drainage of magma and cannot be explained by a pressure point or prolate ellipsoid source. The results show that\u00a0the subsidence is due to crack closure processes along two main ENE\u2013WSW and E\u2013W preexisting faults, which represent the preferred pathway of CO<\/span>2<\/sub>\u00a0degassing from the hydrothermal system located beneath Mt Epomeo.<\/span><\/p>\n","latitude":"40.73","longitude":"13.897","images":[{"path":"\/nas\/content\/live\/cometnerc\/wp-content\/uploads\/figures_sentinel\/ischia\/ischia_117A_04827_031113.jpg","url":"https:\/\/comet.nerc.ac.uk\/wp-content\/uploads\/figures_sentinel\/ischia\/ischia_117A_04827_031113.jpg","width":501,"height":669,"mime":"image\/jpeg","size":74667,"filename":"ischia_117A_04827_031113.jpg"},{"path":"\/nas\/content\/live\/cometnerc\/wp-content\/uploads\/figures_sentinel\/ischia\/ischia_044A_04913_071213.jpg","url":"https:\/\/comet.nerc.ac.uk\/wp-content\/uploads\/figures_sentinel\/ischia\/ischia_044A_04913_071213.jpg","width":501,"height":669,"mime":"image\/jpeg","size":75732,"filename":"ischia_044A_04913_071213.jpg"},{"path":"\/nas\/content\/live\/cometnerc\/wp-content\/uploads\/figures_sentinel\/ischia\/ischia_044A_04912_081213.jpg","url":"https:\/\/comet.nerc.ac.uk\/wp-content\/uploads\/figures_sentinel\/ischia\/ischia_044A_04912_081213.jpg","width":750,"height":1110,"mime":"image\/jpeg","size":118465,"filename":"ischia_044A_04912_081213.jpg"},{"path":"\/nas\/content\/live\/cometnerc\/wp-content\/uploads\/figures_sentinel\/ischia\/ischia_022D_04826_121209.jpg","url":"https:\/\/comet.nerc.ac.uk\/wp-content\/uploads\/figures_sentinel\/ischia\/ischia_022D_04826_121209.jpg","width":501,"height":669,"mime":"image\/jpeg","size":76536,"filename":"ischia_022D_04826_121209.jpg"}],"uri":"https:\/\/comet.nerc.ac.uk\/volcanoes\/ischia\/","api_endpoint":"https:\/\/comet.nerc.ac.uk\/wp-json\/volcanodb\/v1\/volcano\/1797","measurement_methods":"Levelling","inferred_causes":"Surface deposits, Faulting\/tectonics","references":["Sepe, V., Atzori, S., & Ventura, G. (2007). Subsidence due to crack closure and depressurization of hydrothermal systems: a case study from Mt Epomeo (Ischia Island, Italy). Terra Nova, 19(2), 127-132.","Smithsonian Institution Global Volcanism Program
\nhttp:\/\/www.volcano.si.edu\/volcano.cfm?vn=211030"],"date_added":"2015-07-24 20:09:40","last_modified":"2015-07-24 20:09:40"}