Publications
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Hurricane Sandy science plan: coastal impact assessments
Hurricane Sandy devastated some of the most heavily populated eastern coastal areas of the Nation. With a storm surge peaking at more than 19 feet, the powerful landscape-altering destruction of Hurricane Sandy is a stark reminder of why the Nation must become more resilient to coastal hazards. In response to this natural disaster, the U.S. Geological Survey (USGS) received a total of $41.2 millio
Authors
Jakob M. Stronko
Hurricane Sandy science plan: impacts of storm surge, including disturbed estuarine and bay hydrology
Hurricane Sandy devastated some of the most heavily populated eastern coastal areas of the Nation. With a storm surge peaking at more than 19 feet, the powerful landscape-altering destruction of Hurricane Sandy is a stark reminder of why the Nation must become more resilient to coastal hazards. In response to this natural disaster, the U.S. Geological Survey (USGS) received a total of $41.2 millio
Authors
Sarah A. Caskie
Hurricane Sandy science plan: New York
Hurricane Sandy is a stark reminder of why the Nation must become more resilient to coastal hazards. More than one-half of the U.S. population lives within 50 miles of a coast, and this number is increasing.
The U.S. Geological Survey (USGS) is one of the largest providers of geologic and hydrologic information in the world. Federal, State, and local partners depend on the USGS science to know ho
Authors
Clarice N. Ransom
InSAR Evidence for an active shallow thrust fault beneath the city of Spokane Washington, USA
In 2001, a nearly five month long sequence of shallow, mostly small magnitude earthquakes occurred beneath the city of Spokane, a city with a population of about 200,000, in the state of Washington. During most of the sequence, the earthquakes were not well located because seismic instrumentation was sparse. Despite poor-quality locations, the earthquake hypocenters were likely very shallow, becau
Authors
Charles W. Wicks, Craig S. Weaver, Paul Bodin, Brian Sherrod
Foreshocks during the nucleation of stick-slip instability
We report on laboratory experiments which investigate interactions between aseismic slip, stress changes, and seismicity on a critically stressed fault during the nucleation of stick-slip instability. We monitor quasi-static and dynamic changes in local shear stress and fault slip with arrays of gages deployed along a simulated strike-slip fault (2 m long and 0.4 m deep) in a saw cut sample of Sie
Authors
Gregory C. McLaskey, Brian D. Kilgore
Emergency assessment of post-fire debris-flow hazards for the 2013 Powerhouse fire, southern California
Wildfire dramatically alters the hydrologic response of a watershed such that even modest rainstorms can produce dangerous flash floods and debris flows. Existing empirical models were used to predict the probability and magnitude of debris-flow occurrence in response to a 10-year recurrence interval rainstorm for the 2013 Powerhouse fire near Lancaster, California. Overall, the models predict a r
Authors
Dennis M. Staley, Gregory M. Smoczyk, Ryan R. Reeves
Emergency assessment of post-fire debris-flow hazards for the 2013 Mountain fire, southern California
Wildfire dramatically alters the hydrologic response of a watershed such that even modest rainstorms can produce dangerous flash floods and debris flows. We use empirical models to predict the probability and magnitude of debris flow occurrence in response to a 10-year rainstorm for the 2013 Mountain fire near Palm Springs, California. Overall, the models predict a relatively high probability (60–
Authors
Dennis M. Staley, Joseph E. Gartner, Greg M. Smoczyk, Ryan R. Reeves
Implications of the miocene(?) crooked ridge river of northern arizona for the evolution of the colorado river and grand canyon
The southwesterly course of the probably pre–early Miocene and possibly Oligocene Crooked Ridge River can be traced continuously for 48 km and discontinuously for 91 km in northern Arizona (United States). The course is visible today in inverted relief. Pebbles in the river gravel came from at least as far northeast as the San Juan Mountains (Colorado). The river valley was carved out of easily er
Authors
Ivo Lucchitta, Richard F. Holm, Baerbel K. Lucchitta
Vs30 and spectral response from collocated shallow, active- and passive-source Vs data at 27 sites in Puerto Rico
Shear‐wave velocity (VS) and time‐averaged shear‐wave velocity to 30 m depth (VS30) are the key parameters used in seismic site response modeling and earthquake engineering design. Where VS data are limited, available data are often used to develop and refine map‐based proxy models of VS30 for predicting ground‐motion intensities. In this paper, we present shallow VS data from 27 sites in Puerto R
Authors
Jack K. Odum, William J. Stephenson, Robert A. Williams, Christa von Hillebrandt-Andrade
Characterizing and estimating noise in InSAR and InSAR time series with MODIS
InSAR time series analysis is increasingly used to image subcentimeter displacement rates of the ground surface. The precision of InSAR observations is often affected by several noise sources, including spatially correlated noise from the turbulent atmosphere. Under ideal scenarios, InSAR time series techniques can substantially mitigate these effects; however, in practice the temporal distributio
Authors
William D. Barnhart, Rowena B. Lohman
An international network of magnetic observatories
Since its formation in the late 1980s, the International Real-Time Magnetic Observatory Network (INTERMAGNET), a voluntary consortium of geophysical institutes from around the world, has promoted the operation of magnetic observatories according to modern standards [eg. Rasson, 2007]. INTERMAGNET institutes have cooperatively developed infrastructure for data exchange and management ads well as me
Authors
Jeffrey J. Love, A. Chulliat
Spatial variability of "Did You Feel It?" intensity data: insights into sampling biases in historical earthquake intensity distributions
Recent parallel development of improved quantitative methods to analyze intensity distributions for historical earthquakes and of web‐based systems for collecting intensity data for modern earthquakes provides an opportunity to reconsider not only important individual historical earthquakes but also the overall characterization of intensity distributions for historical events. The focus of this st
Authors
Susan E. Hough