Item talk:Q312403

{

 "USGS Publications Warehouse": {
   "@context": "https://schema.org",
   "@type": "Article",
   "additionalType": "Journal Article",
   "name": "Caldera collapse geometry revealed by near\u2010field GPS displacements at Kilauea Volcano in 2018",
   "identifier": [
     {
       "@type": "PropertyValue",
       "propertyID": "USGS Publications Warehouse IndexID",
       "value": "70214125",
       "url": "https://pubs.usgs.gov/publication/70214125"
     },
     {
       "@type": "PropertyValue",
       "propertyID": "USGS Publications Warehouse Internal ID",
       "value": 70214125
     },
     {
       "@type": "PropertyValue",
       "propertyID": "DOI",
       "value": "10.1029/2020GL088867",
       "url": "https://doi.org/10.1029/2020GL088867"
     }
   ],
   "journal": {
     "@type": "Periodical",
     "name": "Geophysical Research Letters",
     "volumeNumber": "47",
     "issueNumber": "15"
   },
   "inLanguage": "en",
   "isPartOf": [
     {
       "@type": "CreativeWorkSeries",
       "name": "Geophysical Research Letters"
     }
   ],
   "datePublished": "2020",
   "dateModified": "2020-09-24",
   "abstract": "We employ near\u2010field GPS data to determine the subsurface geometry of a collapsing caldera during the 2018 K\u012blauea eruption. Collapse occurred in 62 discrete events, with \u201cinflationary\u201d deformation external to the collapse, similar to previous basaltic collapses. We take advantage of GPS data from the collapsing block and independent constraints on the magma chamber geometry from inversion of deflation prior to collapse onset. This provides an unparalleled opportunity to constrain the collapse geometry. Employing an axisymmetric finite element model, the co\u2010collapse displacements are best explained by piston\u2010like subsidence along a high angle (\u223c85\u00b0) normal ring fault that may steepen to vertical with depth. Reservoir magma has compressibility of\u00a02\u219215\u2009\u00d7\u200910\u221210\u2009Pa\u22121, indicating bubble volume fractions from 1% to 7% (lower if fault steepens with depth). Magma pressure increases during collapses are 1 to 3\u2009MPa, depending on compressibility. Depressurization of a triaxial point source in a homogeneous half\u2010space fits the data well but provides a biased representation of the source depth and process.",
   "description": "e2020GL088867, 8 p.",
   "publisher": {
     "@type": "Organization",
     "name": "American Geophysical Union"
   },
   "author": [
     {
       "@type": "Person",
       "name": "Segall, Paul",
       "givenName": "Paul",
       "familyName": "Segall",
       "affiliation": [
         {
           "@type": "Organization",
           "name": "Stanford University"
         }
       ]
     },
     {
       "@type": "Person",
       "name": "Anderson, Kyle R. kranderson@usgs.gov",
       "givenName": "Kyle R.",
       "familyName": "Anderson",
       "email": "kranderson@usgs.gov",
       "identifier": {
         "@type": "PropertyValue",
         "propertyID": "ORCID",
         "value": "0000-0001-8041-3996",
         "url": "https://orcid.org/0000-0001-8041-3996"
       },
       "affiliation": [
         {
           "@type": "Organization",
           "name": "Volcano Science Center",
           "url": "https://www.usgs.gov/centers/volcano-science-center"
         }
       ]
     },
     {
       "@type": "Person",
       "name": "Pulvirenti, Fabio",
       "givenName": "Fabio",
       "familyName": "Pulvirenti",
       "affiliation": [
         {
           "@type": "Organization",
           "name": "JPL/Caltech"
         }
       ]
     },
     {
       "@type": "Person",
       "name": "Wang, Taiyi",
       "givenName": "Taiyi",
       "familyName": "Wang",
       "affiliation": [
         {
           "@type": "Organization",
           "name": "Stanford University"
         }
       ]
     },
     {
       "@type": "Person",
       "name": "Johanson, Ingrid",
       "givenName": "Ingrid",
       "familyName": "Johanson",
       "identifier": {
         "@type": "PropertyValue",
         "propertyID": "ORCID",
         "value": "0000-0002-6049-2225",
         "url": "https://orcid.org/0000-0002-6049-2225"
       },
       "affiliation": [
         {
           "@type": "Organization",
           "name": "Volcano Science Center",
           "url": "https://www.usgs.gov/centers/volcano-science-center"
         }
       ]
     }
   ],
   "funder": [
     {
       "@type": "Organization",
       "name": "Volcano Science Center",
       "url": "https://www.usgs.gov/centers/volcano-science-center"
     }
   ],
   "spatialCoverage": [
     {
       "@type": "Place",
       "additionalType": "country",
       "name": "United States",
       "url": "https://geonames.org/4074035"
     },
     {
       "@type": "Place",
       "additionalType": "state",
       "name": "Hawaii"
     },
     {
       "@type": "Place",
       "additionalType": "unknown",
       "name": "Kilauea Volcano",
       "url": "https://geonames.org/5849380"
     },
     {
       "@type": "Place",
       "geo": [
         {
           "@type": "GeoShape",
           "additionalProperty": {
             "@type": "PropertyValue",
             "name": "GeoJSON",
             "value": {
               "type": "FeatureCollection",
               "features": [
                 {
                   "type": "Feature",
                   "properties": {},
                   "geometry": {
                     "type": "Polygon",
                     "coordinates": [
                       [
                         [
                           -155.3415298461914,
                           19.351315193191255
                         ],
                         [
                           -155.19115447998047,
                           19.351315193191255
                         ],
                         [
                           -155.19115447998047,
                           19.457528461729705
                         ],
                         [
                           -155.3415298461914,
                           19.457528461729705
                         ],
                         [
                           -155.3415298461914,
                           19.351315193191255
                         ]
                       ]
                     ]
                   }
                 }
               ]
             }
           }
         },
         {
           "@type": "GeoCoordinates",
           "latitude": 19.40442182746048,
           "longitude": -155.26634216308594
         }
       ]
     }
   ]
 }

}