Publications
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Rock fall simulation at Timpanogos Cave National Monument, American Fork Canyon, Utah, USA Rock fall simulation at Timpanogos Cave National Monument, American Fork Canyon, Utah, USA
Rock fall from limestone cliffs at Timpanogos Cave National Monument in American Fork Canyon east of Provo, Utah, is a common occurrence. The cave is located in limestone cliffs high on the southern side of the canyon. One fatality in 1933 led to the construction of rock fall shelters at the cave entrance and exit in 1976. Numerous rock fall incidents, including a near miss in 2000 in...
Authors
Edwin L. Harp, Richard L. Dart, Paola Reichenbach
Putting down roots in earthquake country: Your handbook for earthquakes in the Central United States Putting down roots in earthquake country: Your handbook for earthquakes in the Central United States
This handbook provides information to residents of the Central United States about the threat of earthquakes in that area, particularly along the New Madrid seismic zone, and explains how to prepare for, survive, and recover from such events. It explains the need for concern about earthquakes for those residents and describes what one can expect during and after an earthquake. Much is...
Authors
Richard Contributors: Dart, Jill McCarthy, Natasha McCallister, Robert A. Williams
Overview of the ARkStorm scenario Overview of the ARkStorm scenario
The U.S. Geological Survey, Multi Hazards Demonstration Project (MHDP) uses hazards science to improve resiliency of communities to natural disasters including earthquakes, tsunamis, wildfires, landslides, floods and coastal erosion. The project engages emergency planners, businesses, universities, government agencies, and others in preparing for major natural disasters. The project also...
Authors
Keith Porter, Anne Wein, Charles N. Alpers, Allan Baez, Patrick L. Barnard, James Carter, Alessandra Corsi, James Costner, Dale Cox, Tapash Das, Mike Dettinger, James Done, Charles Eadie, Marcia Eymann, Justin Ferris, Prasad Gunturi, Mimi Hughes, Robert Jarrett, Laurie Johnson, Hanh Dam Le-Griffin, David Mitchell, Suzette Morman, Paul Neiman, Anna Olsen, Suzanne Perry, Geoffrey Plumlee, Martin Ralph, David Reynolds, Adam Rose, Kathleen Schaefer, Julie Serakos, William Siembieda, Jonathan D. Stock, David Strong, Ian Sue Wing, Alex Tang, Pete Thomas, Ken Topping, Chris Wills, Lucile Jones
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Earthquake Hazards Program, Science Application for Risk Reduction, Geologic Hazards Science Center, Pacific Coastal and Marine Science Center, Big Sur Landslides, Reducing Risk, San Francisco Bay and Sacramento-San Joaquin Delta Estuary
Cyclic spattering, seismic tremor, and surface fluctuation within a perched lava channel, Kilauea Volcano Cyclic spattering, seismic tremor, and surface fluctuation within a perched lava channel, Kilauea Volcano
In late 2007, a perched lava channel, built up to 45 m above the preexisting surface, developed during the ongoing eruption near Pu‘u ‘Ō‘ō cone on Kīlauea Volcano’s east rift zone. The lava channel was segmented into four pools extending over a total of 1.4 km. From late October to mid-December, a cyclic behavior, consisting of steady lava level rise terminated by vigorous spattering and...
Authors
Matthew R. Patrick, Tim R. Orr, David C. Wilson, David C. Dow, R. Freeman
A methodology for post-mainshock probabilistic assessment of building collapse risk A methodology for post-mainshock probabilistic assessment of building collapse risk
This paper presents a methodology for post-earthquake probabilistic risk (of damage) assessment that we propose in order to develop a computational tool for automatic or semi-automatic assessment. The methodology utilizes the same so-called risk integral which can be used for pre-earthquake probabilistic assessment. The risk integral couples (i) ground motion hazard information for the...
Authors
N. Luco, M.C. Gerstenberger, S.R. Uma, H. Ryu, A.B. Liel, M. Raghunandan
Seismic and geodetic signatures of fault slip at the Slumgullion Landslide Natural Laboratory Seismic and geodetic signatures of fault slip at the Slumgullion Landslide Natural Laboratory
We tested the hypothesis that the Slumgullion landslide is a useful natural laboratory for observing fault slip, specifically that slip along its basal surface and side-bounding strike-slip faults occurs with comparable richness of aseismic and seismic modes as along crustal- and plate-scale boundaries. Our study provides new constraints on models governing landslide motion. We monitored...
Authors
J. Gomberg, W. Schulz, P. Bodin, J. Kean
Developing empirical collapse fragility functions for global building types Developing empirical collapse fragility functions for global building types
Building collapse is the dominant cause of casualties during earthquakes. In order to better predict human fatalities, the U.S. Geological Survey’s Prompt Assessment of Global Earthquakes for Response (PAGER) program requires collapse fragility functions for global building types. The collapse fragility is expressed as the probability of collapse at discrete levels of the input hazard...
Authors
K. Jaiswal, D. Wald, D. D’Ayala
Geomagnetic referencing in the arctic environment Geomagnetic referencing in the arctic environment
Geomagnetic referencing is becoming an increasingly attractive alternative to north-seeking gyroscopic surveys to achieve the precise wellbore positioning essential for success in today's complex drilling programs. However, the greater magnitude of variations in the geomagnetic environment at higher latitudes makes the application of geomagnetic referencing in those areas more...
Authors
Benny Podjono, Nathan Beck, Andrew Buchanan, Jason Brink, Joseph Longo, Carol A. Finn, E. William Worthington
Landslide inventories: The essential part of seismic landslide hazard analyses Landslide inventories: The essential part of seismic landslide hazard analyses
A detailed and accurate landslide inventory is an essential part of seismic landslide hazard analysis. An ideal inventory would cover the entire area affected by an earthquake and include all of the landslides that are possible to detect down to sizes of 1–5 m in length. The landslides must also be located accurately and mapped as polygons depicting their true shapes. Such mapped...
Authors
E. L. Harp, D. K. Keefer, H.P. Sato, H. Yagi
Long-term biases in geomagnetic K and aa indices Long-term biases in geomagnetic K and aa indices
Analysis is made of the geomagnetic-activity aa index and its source K-index data from groups of ground-based observatories in Britain, and Australia, 1868.0–2009.0, solar cycles 11–23. The K data show persistent biases, especially for high (low) K-activity levels at British (Australian) observatories. From examination of multiple subsets of the K data we infer that the biases are not
Authors
Jeffrey J. Love
USGS 1-min Dst index USGS 1-min Dst index
We produce a 1-min time resolution storm-time disturbance index, the USGS Dst, called Dst8507-4SM. This index is based on minute resolution horizontal magnetic field intensity from low-latitude observatories in Honolulu, Kakioka, San Juan and Hermanus, for the years 1985–2007. The method used to produce the index uses a combination of time- and frequency-domain techniques, which more...
Authors
J.L. Gannon, Jeffrey J. Love