Earthquake Hazards Program

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USGS Publications Warehouse

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Filter Total Items: 2,085
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Year Published: 2021

Coastal Tree-Ring Records for Paleoclimate and Paleoenvironmental Applications in North America

For more than a century, tree-ring research has identified relationships between climatic and ecological conditions and tree growth to describe past environments and constrain future ecosystem vulnerabilities. Tree-ring records are frequently used as environmental proxies that extend knowledge of past climate and ecology on millennial scales. Many...

Tucker, Clay; Pearl, Jessie Kathleen

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Year Published: 2021

Creep on the Sargent Fault over the past 50 yr from alignment arrays with implications for slip transfer between the Calaveras and San Andreas Faults, California

The 55‐km‐long Sargent fault connects the creeping Calaveras fault with the locked San Andreas fault through the Santa Cruz Mountains west of Gilroy, California. The position of the Sargent fault between these two faults may have implications for slip transfer and strain accumulation between a creeping and locked fault. The detection and...

Mongovin, Daniel; Philibosian, Belle

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Year Published: 2021

Streambank erosion and related geomorphic change in Tuolumne Meadows, Yosemite National Park, California

Landscape change in Tuolumne Meadows, Yosemite National Park, California, was characterized using data derived from four lidar surveys: one airborne survey in 2006 and three terrestrial surveys in 2016, 2017, and 2018. These surveys were used to generate a better quantitative understanding of changes associated with fluvial processes along the...

DeLong, Stephen B.; Pickering, Alexandra J.; Kuhn, Timothy
DeLong, S.B., Pickering, A.J., and Kuhn, T., 2021, Streambank erosion and related geomorphic change in Tuolumne Meadows, Yosemite National Park, California: U.S. Geological Survey Scientific Investigations Report 2021–5025, 87 p., https://doi.org/10.3133/sir20215025.

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Year Published: 2021

Teleseismic waves reveal anisotropic poroelastic response of wastewater disposal reservoir

Connecting earthquake nucleation in basement rock to fluid injection in basal, sedimentary reservoirs, depends heavily on choices related to the poroelastic properties of the fluid-rock system, thermo-chemical effects notwithstanding. Direct constraints on these parameters outside of laboratory settings are rare, and it is commonly assumed that...

Barbour, Andrew; Beeler, Nicholas M.

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Year Published: 2021

A massive rock and ice avalanche caused the 2021 disaster at Chamoli, Indian Himalaya

On 7 Feb 2021, a catastrophic mass flow descended the Ronti Gad, Rishiganga, and Dhauliganga valleys in Chamoli, Uttarakhand, India, causing widespread devastation and severely damaging two hydropower projects. Over 200 people were killed or are missing. Our analysis of satellite imagery, seismic records, numerical model results, and eyewitness...

Shugar, D. H.; Jacquemart, Mylène; Shean, D.; Bhushan, S.; Upadhyay, K.; Sattar, A.; Schwanghart, W.; McBride, Sara K.; Van Wyk de Vries, M.; Mergili, M.; Emmer, A.; Deschamps-Berger, C.; McDonnell, M.; Bhambri, R.; Allen, S.; Berthier, E.; Carrivick, J.L.; Clague, J.J.; Dokukin, M.; Dunning, S.A.; Frey, Herbert; Gascoin, S.; Haritashya, U. K.; Huggel, C.; Kaab, A.; Kargel, J.S.; Kavanaugh, J.L.; Lacroix, P.; Petley, D. N.; Rupper, S.; Azam, M.F.; Cook, S.J.; Dimri, A.P.; Eriksson, M.; Farinotti, D.; Fiddes, J.; Gnyawali, K.R.; Harrison, S.; Jha, M.K.; Koppes, M.; Kumar, S.; Leiness, S.; Majeed, U.; Mai, S.; Muhuri, A.; Noetzli, J.; Paul, F.; Rashid, I.; Sain, K.; Steiner, J.; Ugalde, F.; Watson, C.S.; Westoby, M.J.

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Year Published: 2021

Short‐period surface‐wave tomography in the continental United States—A resource for research

 grid for the four independent tomographic inversions (Love and Rayleigh and phase and group velocity). One reason for trying to obtain short‐period dispersion was to have a data set capable of constraining upper crust velocity models for use in determining regional moment tensors. The benefit of focusing on short‐period dispersion is...

Herrmann, R. B.; Ammon, C. J.; Benz, Harley M.; Aziz-Zanjani, A.; Boschelli, J.

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Year Published: 2021

Seismic wave propagation and basin amplification in the Wasatch Front, Utah

Ground‐motion analysis of more than 3000 records from 59 earthquakes, including records from the March 2020 Mw">MwMw 5.7 Magna earthquake sequence, was carried out to investigate site response and basin amplification in the Wasatch Front, Utah. We compare ground motions with the Bayless and Abrahamson (2019; hereafter, BA18)...

Moschetti, Morgan P.; Churchwell, David Henry; Thompson, Eric M.; Rekoske, John; Wolin, Emily; Boyd, Oliver S.

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Year Published: 2021

The proliferation of induced seismicity in the Permian Basin, Texas

The Permian Basin has a long history of induced earthquakes, but the seismicity rates have increased dramatically over the past two decades and included a MW 5.0 likely induced by wastewater disposal (WD) in March 2020. A detailed characterization of the proliferation of seismicity in the Permian Basin throughout this time period is...

Skoumal, Robert; Trugman, Daniel T.

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Year Published: 2021

Surface Rupture Map of the 2020 M 6.5 Monte Cristo Range earthquake, Esmeralda and Mineral counties, Nevada

The 15 May 2020, M6.5 Monte Cristo Range earthquake was the largest earthquake in Nevada in over 66 years and occurred in a sparsely populated area of western Nevada about 74 km southeast of the town of Hawthorne. The earthquake produced surface rupture distributed across a 28-km-long zone along the eastward projection of the Candelaria fault in...

Dee, Seth; Koehler, Richard D; Elliott, Austin John; Hatem, Alexandra Elise; Pickering, Alexandra; Pierce, Ian; Seitz, Gordon G.; Collett, Camille Marie; Dawson, Timothy E.; De Masi, Conni; dePolo, Craig M; Hartsorn, Evan; Madugo, Christopher; Trexler, Charles Cashman; Verdugo, Danielle M; Wesnousky, Steven G.; Zachariasen, Judith

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Year Published: 2021

Correlation of porosity variations and rheological transitions on the southern Cascadia megathrust

The unknown onshore extent of megathrust earthquake rupture in the Cascadia subduction zone represents a key uncertainty in earthquake hazard for the Pacific Northwest that is governed by the physical state and mechanical properties of the plate interface. The Cascadia plate interface is segmented into an interseismically locked zone located...

Guo, Hao; McGuire, Jeffrey; Zhang, Haijiang

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Year Published: 2021

A review of timing accuracy across the Global Seismographic Network

The accuracy of timing across a seismic network is important for locating earthquakes as well as studies that use phase‐arrival information (e.g., tomography). The Global Seismographic Network (GSN) was designed with the goal of having reported timing be better than 10 ms. In this work, we provide a brief overview of how timing is kept across...

Ringler, Adam T.; Anthony, Robert E.; Wilson, David C.; Auerbach, D.; Bargabus, S.; Davis, P.W.; Gunnels, M.; Hafner, K.; Holland, James; Kearns, A.; Klimczak, E.

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Year Published: 2021

Rayleigh wave amplitude uncertainty across the Global Seismographic Network and potential implications for global tomography

The Global Seismographic Network (GSN) is a multiuse, globally distributed seismic network used by seismologists, to both characterize earthquakes and study the Earth’s interior. Most stations in the network have two collocated broadband seismometers, which enable network operators to identify potential metadata and sensor issues. In this study,...

Ringler, Adam T.; Anthony, Robert E.; Dalton, C. A.; Wilson, David C.