dc.creator |
Capuano, Paolo |
|
dc.creator |
Russo, Guido |
|
dc.creator |
Civetta, Lucia |
|
dc.creator |
Orsi, Giovanni |
|
dc.creator |
D’Antonio, Massimo |
|
dc.creator |
Moretti, Roberto |
|
dc.date.accessioned |
2018-02-26T14:50:45Z |
|
dc.date.available |
2018-02-26T14:50:45Z |
|
dc.date.issued |
2013-10 |
|
dc.identifier.issn |
1525-2027 |
|
dc.identifier.uri |
http://library2.smu.ca/handle/01/27288 |
|
dc.description |
Publisher's Version/PDF |
|
dc.description.abstract |
We present an improved density model and a new structural map of the Neapolitan Yellow Tuff caldera, the active portion of the nested Campi Flegrei caldera. The model was built using a new 3-D inversion of the available high-precision gravity data, and a new digital terrain and marine model. The inversion procedure, based on a variable-depth lumped assembling of the subsurface gravity distribution via cell aggregation, gives better defined insights into the internal caldera architecture, that well agree with the available geological, geophysical, and geochemical data. The adopted 3-D gravity method is highly efficient for characterizing the shallow caldera structure (down to 3 km depth) and defining features related to regional or volcano tectonic lineaments and dynamics. In particular, the resulting density distribution highlights a pronounced density low in correspondence of the central portion of the caldera with a detail not available till now. The joint interpretation of the available data suggests a subsurface structural setting that supports a piecemeal collapse of the caldera, and allows the identification of its headwall. Positive gravity anomalies localize dense intrusions (presently covered by late volcanic deposits) along the caldera marginal faults, and the main structural lineaments both bordering the resurgent block and cutting the caldera floor. These results allow us to both refine the current geological-structural framework and propose a new structural map that highlights the caldera boundary and its internal setting. This map is useful to interpret the phenomena occurring during unrest, and to improve both short-term and long-term volcanic hazards assessment. |
en_CA |
dc.description.provenance |
Submitted by Betty McEachern (betty.mceachern@smu.ca) on 2018-02-26T14:50:45Z
No. of bitstreams: 1
Moretti_Roberto_article_2013.pdf: 1310729 bytes, checksum: 3f4c6614f265f85f8cc68cd972c78aa5 (MD5) |
en |
dc.description.provenance |
Made available in DSpace on 2018-02-26T14:50:45Z (GMT). No. of bitstreams: 1
Moretti_Roberto_article_2013.pdf: 1310729 bytes, checksum: 3f4c6614f265f85f8cc68cd972c78aa5 (MD5)
Previous issue date: 2013 |
en |
dc.language.iso |
en |
en_CA |
dc.publisher |
American Geophysical Union |
en_CA |
dc.rights |
Article is made available in accordance with the publisher’s policy and is subject to copyright law. Please refer to the publisher’s site. Any re-use of this article is to be in accordance with the publisher’s copyright policy. This posting is in no way granting any permission for re-use to the reader/user. |
|
dc.subject.lcsh |
Campi Flegrei caldera |
|
dc.subject.lcsh |
Calderas -- Italy -- Phlegraean Plain |
|
dc.subject.lcsh |
Geology, Structural -- Italy -- Phlegraean Plain |
|
dc.subject.lcsh |
Gravity anomalies -- Italy -- Phlegraean Plain |
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dc.title |
The active portion of the Campi Flegrei caldera structure imaged by 3-D inversion of gravity data |
en_CA |
dc.type |
Text |
en_CA |
dcterms.bibliographicCitation |
Geochemistry Geophysics Geosystems 14(10), 4681-4697. (2013), doi:10.1002/ggge.20276 |
en_CA |
Copyright statement:
Article is made available in accordance with the publisher’s policy and is subject to copyright law. Please refer to the publisher’s site. Any re-use of this article is to be in accordance with the publisher’s copyright policy. This posting is in no way granting any permission for re-use to the reader/user.