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dc.contributor.authorViesca, Robert Christian
dc.contributor.authorRice, James R.
dc.date.accessioned2011-09-09T19:25:19Z
dc.date.issued2009
dc.identifier.citationViesca, Robert C. and James R. Rice. 2009. Modeling slope instability as shear rupture propagation in a saturated porous medium. In Proceedings of 4th International Symposium on Submarine Mass Movements and Their Consequences: November 8-11, 2009, Austin, Texas, ed. D. C. Mosher, R.C. Shipp, L. Moscardelli, J. D. Chaytor, C. D. P. Baxter, H. J. Lee, and R. Urgeles, 215-225. Advances in Natural and Technological Hazards Research 28. New York: Springer-Verlag.en_US
dc.identifier.isbn978-90-481-3070-2en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:5128476
dc.description.abstractWhen a region of intense shear in a slope is much thinner than other relevant geometric lengths, this shear failure may be approximated as localized slip, as in faulting, with strength determined by frictional properties of the sediment and effective stress normal to the failure surface. Peak and residual frictional strengths of submarine sediments indicate critical slope angles well above those of most submarine slopes—in contradiction to abundant failures. Because deformation of sediments is governed by effective stress, processes affecting pore pressures are a means of strength reduction. However, common methods of exami ning slope stability neglect dynamically variable pore pressure during failure. We examine elastic-plastic models of the capped Drucker-Prager type and derive approximate equations governing pore pressure about a slip surface when the adjacent material may deform plastically. In the process we identify an elastic-plastic hydraulic diffusivity with an evolving permeability and plastic storage term analogous to the elastic term of traditional poroelasticity. We also examine their application to a dynamically propagating subsurface rupture and find indications of downslope directivity.en_US
dc.description.sponsorshipEarth and Planetary Sciencesen_US
dc.description.sponsorshipEngineering and Applied Sciencesen_US
dc.language.isoen_USen_US
dc.publisherSpringer Verlagen_US
dc.relation.isversionofdoi:10.1007/978-90-481-3071-9_18en_US
dc.relation.hasversionhttp://esag.harvard.edu/rice/233_ViescaRi_SlopeStab_SubmarMassMov09.pdfen_US
dash.licenseOAP
dc.subjectslope stabilityen_US
dc.subjectslip surfaceen_US
dc.subjectfrictionen_US
dc.subjectstorageen_US
dc.subjectdiffusivityen_US
dc.subjectporoelasticityen_US
dc.subjectplasticityen_US
dc.subjectdynamic ruptureen_US
dc.subjectfinite elementen_US
dc.subjectlandslideen_US
dc.subjectpore pressureen_US
dc.titleModeling Slope Instability as Shear Rupture Propagation in a Saturated Porous Mediumen_US
dc.typeMonograph or Booken_US
dc.description.versionAccepted Manuscripten_US
dash.depositing.authorRice, James R.
dc.date.available2011-09-09T19:25:19Z
dc.identifier.doi10.1007/978-90-481-3071-9_18*
dash.contributor.affiliatedViesca, Robert Christian
dash.contributor.affiliatedRice, James


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