Matches in SemOpenAlex for { <https://semopenalex.org/work/W7481106> ?p ?o ?g. }
Showing items 1 to 53 of
53
with 100 items per page.
- W7481106 abstract "Earthquake ground motions have been assessed using a probabilistic seismic hazard analysis (PSHA) of the proposed repository for spent nuclear fuel and high-level radioactive wastes at Yucca Mountain, Nevada. To meet the applicable regulations, consideration must be given to ground motions that have probabilities of exceedance as low as 10{sup -8}/yr. In the PSHA, aleatory variability in ground motion attenuation relations is characterized by unbounded lognormal distributions. At extremely low annual probability levels, the tails of these distributions, along with large assessed epistemic uncertainties in ground motions from large, close earthquakes, result in upper-percentile and mean ground motions that are extremely high and probably unphysical. To address this issue, we evaluated site-specific geologic evidence with respect to an upper bound on peak ground velocity (PGV), the ground motion measure that is correlated with damage to underground repository systems. Ground-motion amplitudes are limited by the strength of the materials through which they propagate. At high enough levels of seismic shaking, the rocks at the waste-emplacement level, particularly the lithophysal tuffs, will fracture and fail. A key finding of geologic relations from underground explorations and rock-mechanics modeling is the absence of mechanical damage of the type expected from seismic shaking in themore » 12.8 my old volcanic rocks at the waste-emplacement level (Buesch and Damjanac, this session). Rock mechanics tests and computer modeling provide estimates of the shear strains required to fail the lithophysal rock. In turn, a site-response model is used to calculate PGVs that would cause these shear strains at repository depths. The threshold shear strains required to cause significant damage are estimated to range from 0.09 to 0.35%. This translates to site-specific average PGV values ranging from about 153 to 451 cm/sec. Considering that ground motions of this amplitude are not evidenced in the 12.8 my old lithophysal tuffs, and considering corroborating estimates of the conditional probabilities of ground motions from earthquakes with recurrence rates of 10{sup -5}/yr, we conclude that this range of PGVs represents a reasonable upper bound on PGVs that need to be considered in Yucca Mountain performance assessments.« less" @default.
- W7481106 created "2016-06-24" @default.
- W7481106 creator A5062202473 @default.
- W7481106 creator A5081505395 @default.
- W7481106 creator A5089942646 @default.
- W7481106 date "2004-07-13" @default.
- W7481106 modified "2023-09-26" @default.
- W7481106 title "Bounding Peak Ground Velocities for Seismic Events at Yucca Mountain, Nevada" @default.
- W7481106 doi "https://doi.org/10.2172/837703" @default.
- W7481106 hasPublicationYear "2004" @default.
- W7481106 type Work @default.
- W7481106 sameAs 7481106 @default.
- W7481106 citedByCount "1" @default.
- W7481106 crossrefType "report" @default.
- W7481106 hasAuthorship W7481106A5062202473 @default.
- W7481106 hasAuthorship W7481106A5081505395 @default.
- W7481106 hasAuthorship W7481106A5089942646 @default.
- W7481106 hasConcept C127313418 @default.
- W7481106 hasConcept C13280743 @default.
- W7481106 hasConcept C165205528 @default.
- W7481106 hasConcept C166957645 @default.
- W7481106 hasConcept C205649164 @default.
- W7481106 hasConcept C2779711381 @default.
- W7481106 hasConcept C59822182 @default.
- W7481106 hasConcept C63584917 @default.
- W7481106 hasConcept C86803240 @default.
- W7481106 hasConceptScore W7481106C127313418 @default.
- W7481106 hasConceptScore W7481106C13280743 @default.
- W7481106 hasConceptScore W7481106C165205528 @default.
- W7481106 hasConceptScore W7481106C166957645 @default.
- W7481106 hasConceptScore W7481106C205649164 @default.
- W7481106 hasConceptScore W7481106C2779711381 @default.
- W7481106 hasConceptScore W7481106C59822182 @default.
- W7481106 hasConceptScore W7481106C63584917 @default.
- W7481106 hasConceptScore W7481106C86803240 @default.
- W7481106 hasLocation W74811061 @default.
- W7481106 hasLocation W74811062 @default.
- W7481106 hasOpenAccess W7481106 @default.
- W7481106 hasPrimaryLocation W74811061 @default.
- W7481106 hasRelatedWork W2004013317 @default.
- W7481106 hasRelatedWork W2022035173 @default.
- W7481106 hasRelatedWork W2039808052 @default.
- W7481106 hasRelatedWork W2084027353 @default.
- W7481106 hasRelatedWork W2167517487 @default.
- W7481106 hasRelatedWork W2355282060 @default.
- W7481106 hasRelatedWork W2772196783 @default.
- W7481106 hasRelatedWork W2933907707 @default.
- W7481106 hasRelatedWork W3113596969 @default.
- W7481106 hasRelatedWork W3141829427 @default.
- W7481106 isParatext "false" @default.
- W7481106 isRetracted "false" @default.
- W7481106 magId "7481106" @default.
- W7481106 workType "report" @default.