Earthquake Hazards

Publications

Filter Total Items: 1,474
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Year Published: 2018

Frictional properties and 3-D stress analysis of the southern Alpine Fault, New Zealand

New Zealand's Alpine Fault (AF) ruptures quasi-periodically in large-magnitude earthquakes. Paleoseismological evidence suggests that about half of all recognized AF earthquakes terminated at the boundary between the Central and South Westland sections of the fault. There, fault geometry and the polarity of uplift change. The South Westland...

Boulton, Carolyn; Barth, Nicolas C.; Moore, Diane E.; Lockner, David A.; Townend, John; Faulkner, Daniel R.

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Year Published: 2018

Map of recently active traces of the Rodgers Creek Fault, Sonoma County, California

The accompanying map and digital data identify recently active strands of the Rodgers Creek Fault in Sonoma County, California, interpreted primarily from the geomorphic expression of recent faulting on aerial photography and hillshade imagery derived from airborne lidar data. A recently active fault strand is defined here as having evidence...

Hecker, Suzanne; Randolph Loar, Carolyn E.
Hecker, S., and Randolph Loar, C.E., 2018, Map of recently active traces of the Rodgers Creek Fault, Sonoma County, California: U.S. Geological Survey Scientific Investigations Map 3410, 7 p., 1 sheet, https://doi.org/10.3133/sim3410.

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Year Published: 2018

To catch a quake

A revolution in seismic detection technology is underway, capturing unprecedented observations of earthquakes and their impacts. These sensor innovations provide real-time ground shaking observations that could improve emergency response following damaging earthquakes and may advance our understanding of the physics of earthquake ruptures.

Cochran, Elizabeth S.
Cochran, E.S., 2018. To Catch a Quake, Nature Communications, 9, 2508, doi: 10.1038/s41467-018-04790-9.

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Year Published: 2018

Using geologic structures to constrain constitutive laws not accessible in the laboratory

In this essay, we explore a central problem of structural geology today, and in the foreseeable future, which is the determination of constitutive laws governing rock deformation to produce geologic structures. Although laboratory experiments provide much needed data and insights about constitutive laws, these experiments cannot cover...

Nevitt, Johanna; Warren, Jessica M.; Kumamoto, Kathryn M.; Pollard, David D.
Nevitt, J. M., Warren, J. M., Kumamoto, K. M., & Pollard, D. D. (2018). Using geologic structures to constrain constitutive laws not accessible in the laboratory. Journal of Structural Geology, https://doi.org/10.1016/j.jsg.2018.06.006

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Year Published: 2018

Why aftershock duration matters for probabilistic seismic hazard assessment

Most hazard assessments assume that high background seismicity rates indicate a higher probability of large shocks and, therefore, of strong shaking. However, in slowly deforming regions, such as eastern North America, Australia, and inner Honshu, this assumption breaks down if the seismicity clusters are instead aftershocks of historic and...

Shinji Toda; Stein, Ross S.
Toda, S., and Stein, R., 2018, Why Aftershock Duration Matters for Probabilistic Seismic Hazard Assessment: Bulletin of the Seismological Society of America ; 108 (3A): 1414-1426. https://doi.org/10.1785/0120170270

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Year Published: 2018

ShakeMap-based prediction of earthquake-induced mass movements in Switzerland calibrated on historical observations

In Switzerland, nearly all historical Mw ~ 6 earthquakes have induced damaging landslides, rockslides and snow avalanches that, in some cases, also resulted in damage to infrastructure and loss of lives. We describe the customisation to Swiss conditions of a globally calibrated statistical approach originally developed to rapidly assess...

Cauzzi, Carlo; Fah, Donat; Wald, David J.; Clinton, John; Losey, Stephane; Wiemer, Stefan
Carlo Cauzzi & Donat Fäh & David J. Wald & John Clinton & Stéphane Losey & Stefan Wiemer, 2018. "ShakeMap-based prediction of earthquake-induced mass movements in Switzerland calibrated on historical observations," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 92(2), pages 1211-1235, June.

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Year Published: 2018

Regional spectral analysis of moderate earthquakes in northeastern North America—Final Report to the Nuclear Regulatory Commission, Project V6240, Task 3

We analyze the Fourier spectra of S+Lg+surface wave groups from the horizontal and vertical components of broadband and accelerogram recordings of 120 small and moderate (2< Mw <6) earthquakes recorded by Canadian and American stations sited on rock at distances from 3 to 600 kilometers. There are seven Mw 4.0–4.5, six Mw 4.5–5.0, and...

Boatwright, Jack
Boatwright, J., 2018, Regional spectral analysis of moderate earthquakes in northeastern North America—Final report to the Nuclear Regulatory Commission, project V6240, task 3: U.S. Geological Survey Open-File Report 2018–1073, 39 p., https://doi.org/10.3133/ofr20181073.

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Year Published: 2018

Analysis of mean seismic ground motion and its uncertainty based on the UCERF3 geologic slip rate model with uncertainty for California

The Uniform California Earthquake Rupture Forecast v.3 (UCERF3) model (Field et al., 2014) considers epistemic uncertainty in fault‐slip rate via the inclusion of multiple rate models based on geologic and/or geodetic data. However, these slip rates are commonly clustered about their mean value and do not reflect the broader distribution of...

Zeng, Yuehua
Zeng, Y. (2018). Analysis of Mean Seismic Ground Motion and Its Uncertainty Based on the UCERF3 Geologic Slip Rate Model with Uncertainty for California, SRL, doi: 10.1785/0220170114.

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Year Published: 2018

Preface to the Focus Section on the Collaboratory for the Study of Earthquake Predictability (CSEP): New results and future directions

The Collaboratory for the Study of Earthquake Predictability (CSEP; Jordan, 2006) carries out fully prospective tests of earthquake forecasts, using fixed and standardized statistical tests and authoritative data sets, to assess the predictive skill of forecast models and to make objective comparisons between models. CSEP conducts prospective...

Michael, Andrew J.; Werner, Maximillian J.

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Year Published: 2018

Ensemble smoothed seismicity models for the new Italian Probabilistic Seismic Hazard Map

We develop a long‐term (a few decades or longer) earthquake rate forecast for Italy based on smoothed seismicity for incorporation in the 2017–2018 Italian Probabilistic Seismic Hazard Maps (IPSHM). Because the earthquake rate models from previous IPSHM were computed using source zones that were drawn around seismicity and tectonic provinces, the...

Akinci, Aybige; Moschetti, Morgan P.; Taroni, Matteo
Akinci, A., Moschetti, M. P., & Taroni, M. (2018). Ensemble smoothed seismicity models for the new Italian probabilistic seismic hazard map. Seismological Research Letters. doi:10.1785/0220180040

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Year Published: 2018

Reexamination of the subsurface fault structure in the vicinity of the 1989 moment-magnitude-6.9 Loma Prieta earthquake, central California, using steep-reflection, earthquake, and magnetic data

We reexamine the geometry of the causative fault structure of the 1989 moment-magnitude-6.9 Loma Prieta earthquake in central California, using seismic-reflection, earthquake-hypocenter, and magnetic data. Our study is prompted by recent interpretations of a two-part dip of the San Andreas Fault (SAF) accompanied by a flower-like structure in the...

Zhang, Edward; Fuis, Gary S.; Catchings, Rufus D.; Scheirer, Daniel S.; Goldman, Mark; Bauer, Klaus
Zhang, E., Fuis, G.S., Catchings, R.D., Scheirer, D.S., Goldman, M., and Bauer, K., 2018, Reexamination of the subsurface fault structure in the vicinity of the 1989 moment-magnitude-6.9 Loma Prieta earthquake, central California, using steep-reflection, earthquake, and magnetic data: U.S. Geological Survey Open-File Report 2018–1093, 35 p., https://doi.org/10.3133/ofr20181093.

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Year Published: 2018

Injection-induced moment release can also be aseismic

The cumulative seismic moment is a robust measure of the earthquake response to fluid injection for injection volumes ranging from 3100 to about 12 million m3. Over this range, the moment release is limited to twice the product of the shear modulus and the volume of injected fluid. This relation also applies at the much smaller injection volumes...

McGarr, Arthur; Barbour, Andrew J.
McGarr, A., & Barbour, A. J. (2018). Injection-induced moment release can also be aseismic. Geophysical Research Letters, 45. https://doi.org/10.1029/2018GL078422