Publications
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A rapid estimation of near field tsunami run-up
Many efforts have been made to quickly estimate the maximum run-up height of tsunamis associated with large earthquakes. This is a difficult task, because of the time it takes to construct a tsunami model using real time data from the source. It is possible to construct a database of potential seismic sources and their corresponding tsunami a priori.However, such models are generally based on unif
Authors
Sebastian Riqueime, Mauricio Fuentes, Gavin P. Hayes, Jamie Campos
National Earthquake Information Center systems overview and integration
Overview
The primary mission of the U.S. Geological Survey (USGS) National Earthquake Information Center (NEIC) is comprehensive global earthquake monitoring (M4.5 or larger) and complete seismic monitoring of the United States for all significant earthquakes (M3.0 or larger or felt). In recent years, the NEIC has assumed a more prominent role in local and regional seismic monitoring, backup capab
Authors
Michelle R. Guy, John M. Patton, Jeremy Fee, Mike Hearne, Eric Martinez, D. Ketchum, Charles Worden, Vince Quitoriano, Edward Hunter, Gregory Smoczyk, Stan Schwarz
Strong ground motion inferred from liquefaction caused by the 1811-1812 New Madrid, Missouri, earthquakes
Peak ground accelerations (PGAs) in the epicentral region of the 1811–1812 New Madrid, Missouri, earthquakes are inferred from liquefaction to have been no greater than ∼0.35g. PGA is inferred in an 11,380 km2 area in the Lower Mississippi Valley in Arkansas and Missouri where liquefaction was extensive in 1811–1812. PGA was inferred by applying liquefaction probability curves, which were origina
Authors
Thomas L. Holzer, Thomas E. Noce, Michael J. Bennett
Earthquake shaking hazard estimates and exposure changes in the conterminous United States
A large portion of the population of the United States lives in areas vulnerable to earthquake hazards. This investigation aims to quantify population and infrastructure exposure within the conterminous U.S. that are subjected to varying levels of earthquake ground motions by systematically analyzing the last four cycles of the U.S. Geological Survey's (USGS) National Seismic Hazard Models (publis
Authors
Kishor S. Jaiswal, Mark D. Petersen, Kenneth S. Rukstales, William S. Leith
Earthquake forewarning in the Cascadia region
This report, prepared for the National Earthquake Prediction Evaluation Council (NEPEC), is intended as a step toward improving communications about earthquake hazards between information providers and users who coordinate emergency-response activities in the Cascadia region of the Pacific Northwest. NEPEC charged a subcommittee of scientists with writing this report about forewarnings of increase
Authors
Joan S. Gomberg, Brian F. Atwater, Nicholas M. Beeler, Paul Bodin, Earl Davis, Arthur Frankel, Gavin P. Hayes, Laura McConnell, Tim Melbourne, David H. Oppenheimer, John G. Parrish, Evelyn A. Roeloffs, Gary D. Rogers, Brian Sherrod, John Vidale, Timothy J. Walsh, Craig S. Weaver, Paul M. Whitmore
Stratigraphy and structural development of the southwest Isla Tiburón marine basin: Implications for latest Miocene tectonic opening and flooding of the northern Gulf of California
Accurate information on the timing of earliest marine incursion into the Gulf of California (northwestern México) is critical for paleogeographic models and for understanding the spatial and temporal evolution of strain accommodation across the obliquely divergent Pacific-North America plate boundary. Marine strata exposed on southwest Isla Tiburón (SWIT) have been cited as evidence for a middle M
Authors
Scott E. K. Bennett, Michael Oskin, Rebecca Dorsey, Alexander Iriondo, Michael J. Kunk
ShakeNet: a portable wireless sensor network for instrumenting large civil structures
We report our findings from a U.S. Geological Survey (USGS) National Earthquake Hazards Reduction Program-funded project to develop and test a wireless, portable, strong-motion network of up to 40 triaxial accelerometers for structural health monitoring. The overall goal of the project was to record ambient vibrations for several days from USGS-instrumented structures. Structural health monitoring
Authors
Monica D. Kohler, Shuai Hao, Nilesh Mishra, Ramesh Govindan, Robert Nigbor
Crustal deformation in the New Madrid seismic zone and the role of postseismic processes
Global Navigation Satellite System data across the New Madrid seismic zone (NMSZ) in the central United States over the period from 2000 through 2014 are analyzed and modeled with several deformation mechanisms including the following: (1) creep on subsurface dislocations, (2) postseismic frictional afterslip and viscoelastic relaxation from the 1811–1812 and 1450 earthquakes in the NMSZ, and (3)
Authors
Oliver S. Boyd, Jr Robert Smalley, Yuehua Zeng
Holocene geologic slip rate for the Banning strand of the southern San Andreas Fault, southern California
Northwest directed slip from the southern San Andreas Fault is transferred to the Mission Creek, Banning, and Garnet Hill fault strands in the northwestern Coachella Valley. How slip is partitioned between these three faults is critical to southern California seismic hazard estimates but is poorly understood. In this paper, we report the first slip rate measured for the Banning fault strand. We co
Authors
Peter O. Gold, Whitney M. Behr, Dylan Rood, Warren D. Sharp, Thomas Rockwell, Katherine J. Kendrick, Aaron Salin
Myths and facts on wastewater injection, hydraulic fracturing, enhanced oil recovery, and induced seismicity
The central United States has undergone a dramatic increase in seismicity over the past 6 years (Fig. 1), rising from an average of 24 M≥3 earthquakes per year in the years 1973–2008 to an average of 193 M≥3 earthquakes in 2009–2014, with 688 occurring in 2014 alone. Multiple damaging earthquakes have occurred during this increase including the 2011 M 5.6 Prague, Oklahoma, earthquake; the 2011 M 5
Authors
Justin L. Rubinstein, Alireza Babaie Mahani
Electrical properties of methane hydrate + sediment mixtures
Knowledge of the electrical properties of multicomponent systems with gas hydrate, sediments, and pore water is needed to help relate electromagnetic (EM) measurements to specific gas hydrate concentration and distribution patterns in nature. Toward this goal, we built a pressure cell capable of measuring in situ electrical properties of multicomponent systems such that the effects of individual c
Authors
Wyatt L. Du Frane, Laura A. Stern, Steven Constable, Karen A. Weitemeyer, Megan M Smith, Jeffery J. Roberts
Larger aftershocks happen farther away: nonseparability of magnitude and spatial distributions of aftershocks
Aftershocks may be driven by stress concentrations left by the main shock rupture or by elastic stress transfer to adjacent fault sections or strands. Aftershocks that occur within the initial rupture may be limited in size, because the scale of the stress concentrations should be smaller than the primary rupture itself. On the other hand, aftershocks that occur on adjacent fault segments outside
Authors
Nicholas van der Elst, Bruce E. Shaw