Publications
Filter Total Items: 7239
Debris-flow monitoring and warning: Review and examples
Debris flows represent one of the most dangerous types of mass movements, because of their high velocities, large impact forces and long runout distances. This review describes the available debris-flow monitoring techniques and proposes recommendations to inform the design of future monitoring and warning/alarm systems. The selection and application of these techniques is highly dependent on site
Authors
Marcel Hürlimann, Velio Coviello, Coraline Bel, Xiaojun Guo, Matteo Berti, Christoph Graf, Johannes Hübl, Shusuke Miyata, Joel B. Smith, Hsiao-Yuan Yin
Where was the 31 October 1895, Charleston, Missouri Earthquake?
We revisit the magnitude and location of the 31 October 1895 Charleston, Missouri earthquake, which is widely regarded to be the last MW6 or greater earthquake in the central United States. Although a recent study (Bakun et al., 2003) concluded that this earthquake was located in southern Illinois, over 100 km north of the traditionally inferred location near Charleston, Missouri, our analysis of
Authors
Stacey S. Martin, Susan E. Hough
The HayWired earthquake scenario—Societal consequences
The HayWired Earthquake Scenario—Societal Consequences is the third volume of U.S. Geological Survey (USGS) Scientific Investigations Report 2017–5013, which describes the HayWired scenario, developed by USGS and its partners. The scenario is a hypothetical yet scientifically realistic earthquake sequence that is being used to better understand hazards for the San Francisco Bay region during and a
The 30 November 2018 Mw7.1 Anchorage Earthquake
The Mw 7.1 47 km deep earthquake that occurred on 30 November 2018 had deep societal impacts across southcentral Alaska and exhibited phenomena of broad scientific interest. We document observations that point to future directions of research and hazard mitigation. The rupture mechanism, aftershocks, and deformation of the mainshock are consistent with extension inside the Pacific plate near the d
Authors
Michael E. West, Adrian Bender, Matthew Gardine, Lea Gardine, Kara Gately, Peter J. Haeussler, Wael Hassan, Franz Meyer, Cole Richards, Natalia Ruppert, Carl Tape, John Thornley, Robert Witter
The effect of brine on the electrical properties of methane hydrate
Gas hydrates possess lower electrical conductivity (inverse of resistivity) than either seawater or ice, but higher than clastic silts and sands, such that electromagnetic methods can be employed to help identify their natural formation in marine and permafrost environments. Controlled laboratory studies offer a means to isolate and quantify the effects of changing individual components within gas
Authors
Ryan Lu, Laura A. Stern, Wyatt L. Du Frane, John C. Pinkston, J. Murray Roberts, S. Constable
Stormquakes
Seismic signals from ocean-solid Earth interactions are ubiquitously recorded on our planet. However, these wavefields are typically incoherent in most frequency bands limiting their utilization for understanding ocean dynamics or solid Earth properties. In contrast, we find that during large storms such as hurricanes and Nor’easters the interaction of long-period ocean waves with shallow seafloor
Authors
Wenyuan Fan, Jeffrey McGuire, C. D. de Groot-Hedlin, M. A. H. Hedlin, S. Coats, J. W. Fiedler
Morphodynamic resilience of intertidal mudflats on a seasonal time scale
Intertidal mudflats are morphodynamic features present in many estuaries worldwide. Often located between vegetated shores and deep channels they comprise valuable ecosystems and serve to protect the hinterland by attenuating waves. Although mudflats are persistently present on yearly to decadal time scales, little is known on their morphodynamic adaptation to short‐term variations in forcing such
Authors
Mick Van der Wegen, Dano Roelvink, Bruce E. Jaffe
Infrasound from giant bubbles during explosive submarine eruptions
Shallow submarine volcanoes pose unique scientific and monitoring challenges. The interaction between water and magma can create violent explosions just below the surface, but the inaccessibility of submerged volcanoes means they are typically not instrumented. This both increases the risk to marine and aviation traffic and leaves the underlying eruption physics poorly understood. Here we use low-
Authors
John J. Lyons, Matthew M. Haney, David Fee, Aaron Wech, Christopher F. Waythomas
Assessing the feasibility of satellite-based thresholds for hydrologically driven landsliding
Elevated soil moisture and heavy precipitation contribute to landslides worldwide. These environmental variables are now being resolved with satellites at spatiotemporal scales that could offer new perspectives on the development of landslide warning systems. However, the application of these data to hydro-meteorological thresholds (which account for antecedent soil moisture and rainfall) first ne
Authors
Matthew A. Thomas, Brian D. Collins, Benjamin B. Mirus
Earthquake arrival association with backprojection and graph theory
The association of seismic‐wave arrivals with causative earthquakes becomes progressively more challenging as arrival detection methods become more sensitive, and particularly when earthquake rates are high. For instance, seismic waves arriving across a monitoring network from several sources may overlap in time, false arrivals may be detected, and some arrivals may be of unknown phase (e.g., P or
Authors
Ian McBrearty, Joan S. Gomberg, Andrew Delorey, Paul Johnson
Commentary: Variability in shelf sedimentation in response to fluvial sediment supply and coastal erosion over the past 1,000 Years in Monterey Bay, CA, United States
A commentary on:
Variability in Shelf Sedimentation in Response to Fluvial Sediment Supply and Coastal Erosion Over the Past 1,000 Years in Monterey Bay, CA, United States.
by Carlin J., Addison J., Wagner A., Schwartz V., Hayward J., Severin V. (2019)
Front. Earth Sci., 7:113. doi: 10.3389/feart.2019.00113
Authors
Jonathan Warrick, Amy E. East, Curt D. Storlazzi, James E. Conrad
A multidisciplinary coastal vulnerability assessment for local government focused on ecosystems, Santa Barbara area, California
Incorporating coastal ecosystems in climate adaptation planning is needed to maintain the well-being of both natural and human systems. Our vulnerability study uses a multidisciplinary approach to evaluate climate change vulnerability of an urbanized coastal community that could serve as a model approach for communities worldwide, particularly in similar Mediterranean climates. We synthesize proje
Authors
Monique Myers, Patrick L. Barnard, Edward Beighley, Daniel R. Cayan, Jenifer E. Dugan, Dongmei Feng, Samuel F. Iacobellis, John M. Melack, Henry M. Page