Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/10577
DC Field | Value | Language |
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dc.date.accessioned | 2017-06-20T09:03:03Z | en |
dc.date.available | 2017-06-20T09:03:03Z | en |
dc.date.issued | 2017-06-13 | en |
dc.identifier.uri | http://hdl.handle.net/2122/10577 | en |
dc.description.abstract | During the 2012 Emilia-Romagna (Italy) seismic sequence, several time-dependent phenomena occurred, such as changes in the groundwater regime and chemistry, liquefaction, and postseismic ground displacements. Because time-dependent phenomena require time-dependent physical mechanisms, we interpreted such events as the result of the poroelastic response of the crust after the mainshock. In our study, we performed a two-dimensional poroelastic numerical analysis calibrated with Cosmo-SkyMed interferometric data and measured piezometric levels in water wells. The simulation results are consistent with the observed postseismic ground displacement and water level changes. The simulations show that crustal volumetric changes induced by poroelastic relaxation and the afterslip along the mainshock fault are both required to reproduce the amplitude (approximately 4 cm) and temporal evolution of the observed postseismic uplift. Poroelastic relaxation also affects the aftershock distribution. In fact, the aftershocks are correlated with the postseismic Coulomb stress evolution. In particular, a considerably higher fraction of aftershocks occurs when the evolving poroelastic Coulomb stress is positive. These findings highlight the need to perform calculations that adequately consider the time-dependent poroelastic effect when modeling postseismic scenarios, especially for forecasting the temporal and spatial evolution of stresses after a large earthquake. Failing to do so results in an overestimation of the afterslip and an inaccurate definition of stress and strain in the postseismic phase. | en |
dc.language.iso | English | en |
dc.relation.ispartof | Journal of geophysical research - solid earth | en |
dc.relation.ispartofseries | 7/122 (2017) | en |
dc.subject | earthquake | en |
dc.subject | InSAR ground deformation | en |
dc.subject | Poroelastic rebound | en |
dc.subject | afterslip | en |
dc.subject | Coulomb stress | en |
dc.subject | aftershocks | en |
dc.title | Aftershocks, groundwater changes and postseismic ground displacements related to pore pressure gradients: Insights from the 2012 Emilia-Romagna earthquake | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 5622–5638 | en |
dc.identifier.URL | http://onlinelibrary.wiley.com/doi/10.1002/2017JB014009/full | en |
dc.subject.INGV | 04.07. Tectonophysics | en |
dc.identifier.doi | 10.1002/2017JB014009 | en |
dc.description.obiettivoSpecifico | 1T. Deformazione crostale attiva | en |
dc.description.journalType | JCR Journal | en |
dc.contributor.author | Albano, Matteo | en |
dc.contributor.author | Barba, Salvatore | en |
dc.contributor.author | Solaro, Giuseppe | en |
dc.contributor.author | Pepe, Antonio | en |
dc.contributor.author | Bignami, Christian | en |
dc.contributor.author | Moro, Marco | en |
dc.contributor.author | Saroli, Michele | en |
dc.contributor.author | Stramondo, Salvatore | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | en |
dc.contributor.department | Istituto per il Rilevamento Elettromagnetico dell'Ambiente (IREA), Centro Nazionale delle Ricerche (CNR), Napoli, Italia | en |
dc.contributor.department | Istituto per il Rilevamento Elettromagnetico dell'Ambiente (IREA), Centro Nazionale delle Ricerche (CNR), Napoli, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | en |
dc.contributor.department | Dipartimento di Ingegneria Civile e Meccanica, Università degli Studi di Cassino e del Lazio meridionale, Cassino, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | - |
crisitem.author.dept | IREA-CNR, Naples, Italy. | - |
crisitem.author.dept | Universita` Federico II, Dipartimento di Ingegneria Elettronica e delle Telecomunicazioni | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | - |
crisitem.author.dept | University of Cassino | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | - |
crisitem.author.orcid | 0000-0003-2772-2401 | - |
crisitem.author.orcid | 0000-0001-7965-6667 | - |
crisitem.author.orcid | 0000-0002-7843-3565 | - |
crisitem.author.orcid | 0000-0002-8632-9979 | - |
crisitem.author.orcid | 0000-0002-3408-8034 | - |
crisitem.author.orcid | 0000-0001-9499-3960 | - |
crisitem.author.orcid | 0000-0003-0163-7647 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | |
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JGRB52152.pdf | 3.89 MB | Adobe PDF | View/Open |
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