Publications
Filter Total Items: 7240
EAARL coastal topography-eastern Florida, post-Hurricane Jeanne, 2004
This DVD contains lidar-derived bare-earth (BE) topography GIS datasets of a portion of the eastern Florida coastline beachface, acquired post-Hurricane Jeanne on October 1, 2004.
Authors
Xan Fredericks, Amar Nayegandhi, J.M. Bonisteel-Cormier, C. W. Wright, A. H. Sallenger, J. C. Brock, E.S. Klipp, D.B. Nagle
EAARL topography-Three Mile Creek and Mobile-Tensaw Delta, Alabama, 2010
This DVD contains lidar-derived first-surface (FS) and bare-earth (BE) topography GIS datasets of a portion of the Mobile-Tensaw Delta region and Three Mile Creek in Alabama. These datasets were acquired on March 6, 2010.
Authors
Amar Nayegandhi, J.M. Bonisteel-Cormier, A.P. Clark, C. W. Wright, J. C. Brock, D.B. Nagle, Saisudha Vivekanandan, Xan Fredericks
EAARL topography-Potato Creek watershed, Georgia, 2010
This DVD contains lidar-derived first-surface (FS) and bare-earth (BE) topography GIS datasets of a portion of the Potato Creek watershed in the Apalachicola-Chattahoochee-Flint River basin, Georgia. These datasets were acquired on February 27, 2010.
Authors
J.M. Bonisteel-Cormier, Amar Nayegandhi, Xan Fredericks, J. W. Jones, C. W. Wright, J. C. Brock, D.B. Nagle
EAARL coastal topography-Northern Outer Banks, North Carolina, post-Nor'Ida, 2009
This DVD contains lidar-derived first-surface (FS) and bare-earth (BE) topography GIS datasets of a portion of the northern Outer Banks beachface in North Carolina. These datasets were acquired post-Nor'Ida on November 27 and 29, 2009.
Authors
J.M. Bonisteel-Cormier, Amar Nayegandhi, C. W. Wright, A. H. Sallenger, J. C. Brock, D.B. Nagle, Saisudha Vivekanandan, E.S. Klipp, Xan Fredericks
Observations of wave runup, setup, and swash on natural beaches
Video-based observations of wave runup, setup, and swash from 10 dynamically diverse field experiments are presented. These data were used to develop widely applicable empirical parameterizations for wave setup, incident band swash height, infragravity band swash height, and the 2-percent exceedance level for wave runup. Details regarding the experiments, data analysis, and empirical parameterizat
Authors
Hilary F. Stockdon, Rob A. Holman
Twitter earthquake detection: Earthquake monitoring in a social world
The U.S. Geological Survey (USGS) is investigating how the social networking site Twitter, a popular service for sending and receiving short, public text messages, can augment USGS earthquake response products and the delivery of hazard information. Rapid detection and qualitative assessment of shaking events are possible because people begin sending public Twitter messages (tweets) with in tens o
Authors
Paul S. Earle, Daniel C. Bowden, Michelle R. Guy
Stress conditions inferable from modern magnitudes: development of a model of fault maturity
No abstract available.
Authors
George L. Choy
A new strategy for developing Vs30 maps
Despite obvious limitations as a proxy for site amplification, the use of time-averaged shear-wave velocity over the top 30m (Vs30) is useful and widely practiced, most notably through its use as an explanatory variable in ground motion prediction equations (and thus hazard maps and ShakeMaps, among other applications). Local, regional, and global Vs30 maps thus have diverse and fundamental uses i
Authors
David J. Wald, Leslie McWhirter, Eric Thompson, Amanda S. Hering
Quantifying the influence of sea ice on ocean microseism using observations from the Bering Sea, Alaska
Microseism is potentially affected by all processes that alter ocean wave heights. Because strong sea ice prevents large ocean waves from forming, sea ice can therefore significantly affect microseism amplitudes. Here we show that this link between sea ice and microseism is not only a robust one but can be quantified. In particular, we show that 75–90% of the variability in microseism power in the
Authors
Victor C. Tsai, Daniel E. McNamara
A methodology for post-mainshock probabilistic assessment of building collapse risk
This paper presents a methodology for post-earthquake probabilistic risk (of damage) assessment that we propose in order to develop a computational tool for automatic or semi-automatic assessment. The methodology utilizes the same so-called risk integral which can be used for pre-earthquake probabilistic assessment. The risk integral couples (i) ground motion hazard information for the location of
Authors
N. Luco, M.C. Gerstenberger, S.R. Uma, H. Ryu, A.B. Liel, M. Raghunandan
Long-period earthquake simulations in the Wasatch Front, UT: misfit characterization and ground motion estimates
In this research we characterize the goodness-of-fit between observed and synthetic seismograms from three small magnitude (M3.6-4.5) earthquakes in the region using the Wasatch Front community velocity model (WCVM) in order to determine the ability of the WCVM to predict earthquake ground motions for scenario earthquake modeling efforts. We employ the goodness-of-fit algorithms and criteria of Ol
Authors
Morgan P. Moschetti, Leonardo Ramírez-Guzmán
Understanding the amplitudes of noise correlation measurements
Cross correlation of ambient seismic noise is known to result in time series from which station-station travel-time measurements can be made. Part of the reason that these cross-correlation travel-time measurements are reliable is that there exists a theoretical framework that quantifies how these travel times depend on the features of the ambient noise. However, corresponding theoretical results
Authors
Victor C. Tsai