Instantaneous limit equilibrium back analyses of major rockslides triggered during the 2016–2017 central Italy seismic sequence
<p>Among the almost 1400 landslides triggered by the shocks of the 2016–2017 central Italy seismic sequence, only a limited number, all classifiable as rockslides, involved volumes larger than 1000 m<span class="inline-formula"><sup>3</sup></span>. Four of the...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2023-03-01
|
| Series: | Natural Hazards and Earth System Sciences |
| Online Access: | https://nhess.copernicus.org/articles/23/1177/2023/nhess-23-1177-2023.pdf |
| _version_ | 1797865949782605824 |
|---|---|
| author | L. Verrucci G. Forte M. De Falco P. Tommasi G. Lanzo K. W. Franke A. Santo |
| author_facet | L. Verrucci G. Forte M. De Falco P. Tommasi G. Lanzo K. W. Franke A. Santo |
| author_sort | L. Verrucci |
| collection | DOAJ |
| description | <p>Among the almost 1400 landslides triggered by the shocks
of the 2016–2017 central Italy seismic sequence, only a limited number, all
classifiable as rockslides, involved volumes larger than 1000 m<span class="inline-formula"><sup>3</sup></span>. Four
of these failures, including the three largest among the documented
landslides, were described in terms of structural and geomechanical
investigations in a previous paper. In this study, the estimated
acceleration time histories at the rockslide sites were evaluated through a
2D simplified numerical model accounting for the attenuation phenomena and
for the topographic effect of the rock cliffs from which the slide detached.
Instantaneous stability analyses were carried out to obtain insights into
the variability of the instantaneous margin of safety along the motion, over
the entire spectrum of mechanisms that could be activated. Finally, some
general suggestions on the pseudo-static verification method for
3D cases are proposed, which represent useful indications to
hazard evaluation at local and regional scales.</p> |
| first_indexed | 2024-04-09T23:16:21Z |
| format | Article |
| id | doaj.art-67ea42166c7c4674b19148081f761b8c |
| institution | Directory Open Access Journal |
| issn | 1561-8633 1684-9981 |
| language | English |
| last_indexed | 2024-04-09T23:16:21Z |
| publishDate | 2023-03-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Natural Hazards and Earth System Sciences |
| spelling | doaj.art-67ea42166c7c4674b19148081f761b8c2023-03-22T06:16:15ZengCopernicus PublicationsNatural Hazards and Earth System Sciences1561-86331684-99812023-03-01231177119010.5194/nhess-23-1177-2023Instantaneous limit equilibrium back analyses of major rockslides triggered during the 2016–2017 central Italy seismic sequenceL. Verrucci0G. Forte1M. De Falco2P. Tommasi3G. Lanzo4K. W. Franke5A. Santo6Dipartimento d'Ingegneria Strutturale e Geotecnica, Sapienza Università di Roma, Rome, ItalyDipartimento d'Ingegneria Civile, Edile e Ambientale, Università degli Studi di Napoli Federico II, Naples, ItalyDipartimento d'Ingegneria Civile, Edile e Ambientale, Università degli Studi di Napoli Federico II, Naples, ItalyCnr – Istituto di Geologia Ambientale e Geoingegneria, Rome, ItalyDipartimento d'Ingegneria Strutturale e Geotecnica, Sapienza Università di Roma, Rome, ItalyDepartment of Civil and Environmental Engineering, Brigham Young University, Provo, UT, USADipartimento d'Ingegneria Civile, Edile e Ambientale, Università degli Studi di Napoli Federico II, Naples, Italy<p>Among the almost 1400 landslides triggered by the shocks of the 2016–2017 central Italy seismic sequence, only a limited number, all classifiable as rockslides, involved volumes larger than 1000 m<span class="inline-formula"><sup>3</sup></span>. Four of these failures, including the three largest among the documented landslides, were described in terms of structural and geomechanical investigations in a previous paper. In this study, the estimated acceleration time histories at the rockslide sites were evaluated through a 2D simplified numerical model accounting for the attenuation phenomena and for the topographic effect of the rock cliffs from which the slide detached. Instantaneous stability analyses were carried out to obtain insights into the variability of the instantaneous margin of safety along the motion, over the entire spectrum of mechanisms that could be activated. Finally, some general suggestions on the pseudo-static verification method for 3D cases are proposed, which represent useful indications to hazard evaluation at local and regional scales.</p>https://nhess.copernicus.org/articles/23/1177/2023/nhess-23-1177-2023.pdf |
| spellingShingle | L. Verrucci G. Forte M. De Falco P. Tommasi G. Lanzo K. W. Franke A. Santo Instantaneous limit equilibrium back analyses of major rockslides triggered during the 2016–2017 central Italy seismic sequence Natural Hazards and Earth System Sciences |
| title | Instantaneous limit equilibrium back analyses of major rockslides triggered during the 2016–2017 central Italy seismic sequence |
| title_full | Instantaneous limit equilibrium back analyses of major rockslides triggered during the 2016–2017 central Italy seismic sequence |
| title_fullStr | Instantaneous limit equilibrium back analyses of major rockslides triggered during the 2016–2017 central Italy seismic sequence |
| title_full_unstemmed | Instantaneous limit equilibrium back analyses of major rockslides triggered during the 2016–2017 central Italy seismic sequence |
| title_short | Instantaneous limit equilibrium back analyses of major rockslides triggered during the 2016–2017 central Italy seismic sequence |
| title_sort | instantaneous limit equilibrium back analyses of major rockslides triggered during the 2016 2017 central italy seismic sequence |
| url | https://nhess.copernicus.org/articles/23/1177/2023/nhess-23-1177-2023.pdf |
| work_keys_str_mv | AT lverrucci instantaneouslimitequilibriumbackanalysesofmajorrockslidestriggeredduringthe20162017centralitalyseismicsequence AT gforte instantaneouslimitequilibriumbackanalysesofmajorrockslidestriggeredduringthe20162017centralitalyseismicsequence AT mdefalco instantaneouslimitequilibriumbackanalysesofmajorrockslidestriggeredduringthe20162017centralitalyseismicsequence AT ptommasi instantaneouslimitequilibriumbackanalysesofmajorrockslidestriggeredduringthe20162017centralitalyseismicsequence AT glanzo instantaneouslimitequilibriumbackanalysesofmajorrockslidestriggeredduringthe20162017centralitalyseismicsequence AT kwfranke instantaneouslimitequilibriumbackanalysesofmajorrockslidestriggeredduringthe20162017centralitalyseismicsequence AT asanto instantaneouslimitequilibriumbackanalysesofmajorrockslidestriggeredduringthe20162017centralitalyseismicsequence |