Geologic Hazards Science Center

Publications

Filter Total Items: 2,068
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Year Published: 2020

Temporal and spatial variability of shallow soil moisture across four planar hillslopes on a tropical ocean island, San Cristóbal, Galápagos

Study Region: This paper provides a summary of findings from temporal and spatial studies of soil water content on planar hillslopes across the equatorial island of San Cristóbal, Galápagos (Ecuador). Study Focus: Soil water content (SWC) was measured to generate temporal and spatial records to determine seasonal variation and to investigate how...

Percy, Madelyn S.; Riveros-Iregui, Diego A.; Mirus, Benjamin B.; Benninger, Larry K.

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Year Published: 2020

Landslides across the United States: Occurrence, susceptibility, and data limitations

Detailed information about landslide occurrence is the foundation for advancing process understanding, susceptibility mapping, and risk reduction. Despite the recent revolution in digital elevation data and remote sensing technologies, landslide mapping remains resource intensive. Consequently, a modern, comprehensive map of landslide occurrence...

Mirus, Benjamin B.; Jones, Eric S.; Baum, Rex L.; Godt, Jonathan W.; Slaughter, Stephen Lee; Crawford, Matthew; Lancaster, Jeremy T.; Stanley, Thomas; Kirschbaum, Dalia; Burns, William J.; Schmitt, Robert G.; Lindsey, Kassandra O; McCoy, Kevin

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Year Published: 2020

Geometric and material variability influences stress states relevant to coastal permafrost bluff failure

Scientific knowledge and engineering tools for predicting coastal erosion are largely confined to temperate climate zones that are dominated by non-cohesive sediments. The pattern of erosion exhibited by the ice-bonded permafrost bluffs in Arctic Alaska, however, is not well explained by these tools. Investigation of the oceanographic, thermal,...

Thomas, Matthew A.; Mota, Alejandro; Jones, Benjamin M.; Choens, R. Charles; Frederick, Jennifer M.; Bull, Diana L.

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Year Published: 2020

The influence of frequency and duration of seismic ground motion on the size of triggered landslides—A regional view

Observation, theory, and intuition all suggest that larger earthquakes should trigger larger landslides. Many factors could contribute to this, including depth-dependent shear strength or non-linearity of ground motion in soils and rock, but we hypothesize that the key characteristics of large earthquakes causing this phenomenon are (in addition...

Jibson, Randall W.; Tanyaş, Hakan

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Year Published: 2020

Types and areal distribution of ground failure associated with the 2019 Ridgecrest, California, earthquake sequence

The July 2019 Ridgecrest, California, earthquake sequence included the largest earthquake (M 7.1) to strike the conterminous United States in the past 20 yr. To characterize the types, numbers, and areal distributions of different types of ground failure (landslides, liquefaction, and ground cracking), I conducted a field investigation...

Jibson, Randall W.

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Year Published: 2020

The future of landslides’ past—A framework for assessing consecutive landsliding systems

Landslides often happen where they have already occurred in the past. The potential of landslides to reduce or enhance conditions for further landsliding has long been recognized and has often been reported, but the mechanisms and spatial and temporal scales of these processes have previously received little specific attention. Despite a...

Temme, A.; Guzzetti, F.; Samia, J.; Mirus, Benjamin B.

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Year Published: 2020

Risk-targeted alternatives to deterministic ground motion caps in U.S. seismic provisions

Since their inception over 20 years ago, the maximum considered earthquake ground motion maps in U.S. building codes have capped probabilistic values with deterministic ground motions from characteristic earthquakes on known active faults. This practice has increasingly been called into question both because of spatially non-uniform risk levels...

Stewart, Jonathan P.; Luco, Nicolas; Hooper, John D; Crouse, C. B.

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Year Published: 2020

Predicting the floods that follow the flames

No abstract available.

Gourley, Jonathan J; Vergara, Humberto; Arthur, Ami; Clark, Robert A III; Staley, Dennis M.; Fulton, John; Hempel, Laura A.; Goodrich, David C.; Rowden, Katherine; Robichaud, Peter R.

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Year Published: 2020

Holocene relative sea-level change along the tectonically active Chilean coast

We present a comprehensive relative sea-level (RSL) database for north, central, and south-central Chile (18.5°S – 43.6°S) using a consistent, systematic, and internationally comparable approach. Despite its latitudinal extent, this coastline has received little rigorous or systematic attention and details of its RSL history remain largely...

Garrett, Ed; Melnick, Daniel; Dura, Tina; Cisternas, Marco; Ely, Lisa; Wesson, Robert L.; Jara-Munoz, Julius; Whitehouse, Pippa L

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Year Published: 2020

Airborne lidar and electro-optical imagery along surface ruptures of the 2019 Ridgecrest earthquake sequence, Southern California

Surface rupture from the 2019 Ridgecrest earthquake sequence, initially associated with the M 6.4 foreshock, occurred on July 4 on a ~17 km long, northeast-southwest oriented, left-lateral zone of faulting. Following the M 7.1 mainshock on July 5 (local time), extensive northwest-southeast-oriented, right-lateral faulting was then also mapped...

Brooks, Benjamin A.; Scharer, Katherine; Hernandez, Janis; Dawson, Timothy E.; Oskin, Mike; Arrowsmith, Ramon; Goulet, Christine A.; Blake, Kelly; Boggs, Matt; Bork, Stephan; Glennie, Craig; Fernandez-Diaz, J.C.; Singhania, Abhinav; Hauser, Darren L.; Sorhus, Sven; Hudnut, Kenneth W.; Brooks, Benjamin A.; Scharer, Katherine M.; Hernandez, Janis L.; Dawson, Timothy E.; Oskin, Michael E.; Arrowsmith, J. Ramon; Goulet, Christine A.; Blake, Kelly; Boggie, Matthew A.; Bork, Stephan; Craig L. Glennie; Fernandez-Diaz, J.C.; Singhania, Abhinav; Hauser, Darren; Sorhus, Sven

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Year Published: 2020

Science plan for improving three-dimensional seismic velocity models in the San Francisco Bay region, 2019–24

This five-year science plan outlines short-term and long-term goals for improving three-dimensional seismic velocity models in the greater San Francisco Bay region as well as how to foster a community effort in reaching those goals. The short-term goals focus on improving the current U.S. Geological Survey San Francisco Bay region geologic and...

Aagaard, Brad T.; Graymer, Russell W.; Thurber, Clifford H.; Rodgers, Arthur J.; Taira, Taka'aki; Catchings, Rufus D.; Goulet, Christine A.; Plesch, Andreas
Aagaard, B.T., Graymer, R.W., Thurber, C.H., Rodgers, A.J., Taira, T., Catchings, R.D., Goulet, C.A., and Plesch, A., 2020, Science plan for improving three-dimensional seismic velocity models in the San Francisco Bay region, 2019–24: U.S. Geological Survey Open-File Report 2020–1019, 37 p., https://doi.org/10.3133/ofr20201019.

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Year Published: 2020

Practical limitations of Earthquake Early Warning

Earthquake Early Earning (EEW) entails detection of initial earthquake shaking and rapid estimation and notification to users prior to imminent, stronger shaking. EEW is coming to the U.S. West Coast. But what are the technical and social challenges to delivering actionable information on earthquake shaking before it arrives? Although there will...

Wald, David J.