scholarly journals Quantitative rock-fall hazard and risk assessment for Yosemite Valley, Yosemite National Park, California

2014 ◽  
Author(s):  
Greg M. Stock ◽  
Nicolas Luco ◽  
Brian D. Collins ◽  
Edwin L. Harp ◽  
Paola Reichenbach ◽  
...  
Keyword(s):  
Risk Assessment ◽  
National Park ◽  
Rock Fall ◽  
Yosemite National Park ◽  
Yosemite Valley ◽  
Hazard And Risk ◽  
Hazard And Risk Assessment

Rock fall hazard and risk assessment along Araniko Highway, Central Nepal Himalaya

2016 ◽  
Vol 75 (14) ◽  
Author(s):  
Amar Deep Regmi ◽  
Peng Cui ◽  
Megh Raj Dhital ◽  
Qiang Zou
Keyword(s):  
Risk Assessment ◽  
Rock Fall ◽  
Nepal Himalaya ◽  
Central Nepal ◽  
Hazard And Risk ◽  
Hazard And Risk Assessment

scholarly journals Investigation and hazard assessment of the 2003 and 2007 Staircase Falls rock falls, Yosemite National Park, California, USA

2008 ◽  
Vol 8 (3) ◽  
pp. 421-432 ◽  
Author(s):  
G. F. Wieczorek ◽  
G. M. Stock ◽  
P. Reichenbach ◽  
J. B. Snyder ◽  
J. W. Borchers ◽  
...  
Keyword(s):  
National Park ◽  
Three Dimensional ◽  
Source Area ◽  
Rock Fall ◽  
Yosemite National Park ◽  
Rock Falls ◽  
Joint Spacing ◽  
Hydrologic Processes ◽  
Yosemite Valley ◽  
Triggering Mechanisms

Abstract. Since 1857 more than 600 rock falls, rock slides, debris slides, and debris flows have been documented in Yosemite National Park, with rock falls in Yosemite Valley representing the majority of the events. On 26 December 2003, a rock fall originating from west of Glacier Point sent approximately 200 m3 of rock debris down a series of joint-controlled ledges to the floor of Yosemite Valley. The debris impacted talus near the base of Staircase Falls, producing fragments of flying rock that struck occupied cabins in Curry Village. Several years later on 9 June 2007, and again on 26 July 2007, smaller rock falls originated from the same source area. The 26 December 2003 event coincided with a severe winter storm and was likely triggered by precipitation and/or frost wedging, but the 9 June and 26 July 2007 events lack recognizable triggering mechanisms. We investigated the geologic and hydrologic factors contributing to the Staircase Falls rock falls, including bedrock lithology, weathering, joint spacing and orientations, and hydrologic processes affecting slope stability. We improved upon previous geomorphic assessment of rock-fall hazards, based on a shadow angle approach, by using STONE, a three-dimensional rock-fall simulation computer program. STONE produced simulated rock-fall runout patterns similar to the mapped extent of the 2003 and 2007 events, allowing us to simulate potential future rock falls from the Staircase Falls detachment area. Observations of recent rock falls, mapping of rock debris, and simulations of rock fall runouts beneath the Staircase Falls detachment area suggest that rock-fall hazard zones extend farther downslope than the extent previously defined by mapped surface talus deposits.

scholarly journals Definitions and Concepts for Quantitative Rockfall Hazard and Risk Analysis

Geosciences ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 158
Author(s):  
Didier Hantz ◽  
Jordi Corominas ◽  
Giovanni B. Crosta ◽  
Michel Jaboyedoff
Keyword(s):  
Risk Assessment ◽  
At Risk ◽  
Failure Probability ◽  
Rockfall Hazard ◽  
Process Failure ◽  
Failure Propagation ◽  
Element At Risk ◽  
Hazard And Risk ◽  
Hazard And Risk Assessment ◽  
Definition Of

There is an increasing need for quantitative rockfall hazard and risk assessment that requires a precise definition of the terms and concepts used for this particular type of landslide. This paper suggests using terms that appear to be the most logic and explicit as possible and describes methods to derive some of the main hazards and risk descriptors. The terms and concepts presented concern the rockfall process (failure, propagation, fragmentation, modelling) and the hazard and risk descriptors, distinguishing the cases of localized and diffuse hazards. For a localized hazard, the failure probability of the considered rock compartment in a given period of time has to be assessed, and the probability for a given element at risk to be impacted with a given energy must be derived combining the failure probability, the reach probability, and the exposure of the element. For a diffuse hazard that is characterized by a failure frequency, the number of rockfalls reaching the element at risk per unit of time and with a given energy (passage frequency) can be derived. This frequency is relevant for risk assessment when the element at risk can be damaged several times. If it is not replaced, the probability that it is impacted by at least one rockfall is more relevant.

STUDY ON BISPHENOL F, A BISPHENOL A ANALOGUE, AT A DAIRY COMPANY: HEALTH HAZARD AND RISK ASSESSMENT

2021 ◽  
pp. 112334
Author(s):  
Serena Santonicola ◽  
Stefania Albrizio ◽  
Maria Carmela Ferrante ◽  
Mercogliano Raffaelina
Keyword(s):  
Risk Assessment ◽  
Bisphenol A ◽  
Health Hazard ◽  
Bisphenol F ◽  
Hazard And Risk ◽  
Hazard And Risk Assessment

Aquatic hazard and risk assessment of two selected substances produced in high volumes in the Slovak Republic

Chemosphere ◽  
1997 ◽  
Vol 34 (1) ◽  
pp. 179-190 ◽  
Author(s):  
Martin Murín ◽  
Juraj Gavora ◽  
Iveta Drastichová ◽  
Elena Dušková ◽  
Torben Madsen ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Slovak Republic ◽  
Hazard And Risk ◽  
Hazard And Risk Assessment
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