Publications
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Hazus® estimated annualized earthquake losses for the United States Hazus® estimated annualized earthquake losses for the United States
Large earthquakes can cause social and economic disruption that can be unprecedented to any given community, and the full recovery from these impacts may or may not always be achievable. In the United States (U.S.), the 1994 M6.7 Northridge earthquake in California remains the third costliest disaster in U.S. history; and it was one of the most expensive disasters for the federal...
Authors
Kishor S. Jaiswal, Doug Bausch, Jesse Rozelle, John Holub, Sean McGowan
Inner-shelf ocean dynamics and seafloor morphologic changes during Hurricane Sandy Inner-shelf ocean dynamics and seafloor morphologic changes during Hurricane Sandy
Hurricane Sandy was one of the most destructive hurricanes in US history, making landfall on the New Jersey coast on Oct 30, 2012. Storm impacts included several barrier island breaches, massive coastal erosion, and flooding. While changes to the subaerial landscape are relatively easily observed, storm-induced changes to the adjacent shoreface and inner continental shelf are more...
Authors
John C. Warner, William C. Schwab, Jeffrey H. List, Ilgar Safak, Maria Liste, Wayne E. Baldwin
Characterizing local variability in long‐period horizontal tilt noise Characterizing local variability in long‐period horizontal tilt noise
Horizontal seismic data are dominated by atmospherically induced tilt noise at long periods (i.e., 30 s and greater). Tilt noise limits our ability to use horizontal data for sensitive seismological studies such as observing free earth modes. To better understand the local spatial variability of long‐period horizontal noise, we observe horizontal noise during quiet time periods in the...
Authors
M.D. Rohde, Adam T. Ringler, Charles R. Hutt, David C. Wilson, Austin Holland, L.D Sandoval, Tyler Storm
Accelerating slip rates on the puente hills blind thrust fault system beneath metropolitan Los Angeles, California, USA Accelerating slip rates on the puente hills blind thrust fault system beneath metropolitan Los Angeles, California, USA
Slip rates represent the average displacement across a fault over time and are essential to estimating earthquake recurrence for proba-bilistic seismic hazard assessments. We demonstrate that the slip rate on the western segment of the Puente Hills blind thrust fault system, which is beneath downtown Los Angeles, California (USA), has accel-erated from ~0.22 mm/yr in the late Pleistocene...
Authors
Kristian J. Bergen, John H. Shaw, Lorraine A. Leon, James F. Dolan, Thomas L. Pratt, Daniel J. Ponti, Eric Morrow, Wendy Barrera, Edward J. Rhodes, Madhav K. Murari, Lewis A. Owen
The vanishing cryovolcanoes of Ceres The vanishing cryovolcanoes of Ceres
Ahuna Mons is a 4 km tall mountain on Ceres interpreted as a geologically young cryovolcanic dome. Other possible cryovolcanic features are more ambiguous, implying that cryovolcanism is only a recent phenomenon or that other cryovolcanic structures have been modified beyond easy identification. We test the hypothesis that Cerean cryovolcanic domes viscously relax, precluding ancient...
Authors
Michael M. Sori, Shane Byrne, Michael T. Bland, Ali Bramson, Anton Ermakov, Christoper Hamilton, Katharina Otto, Ottaviano Ruesch, Christopher Russell
Connecting the dots: Preprocessing Apollo 15 panoramic camera images for photogrammetric control Connecting the dots: Preprocessing Apollo 15 panoramic camera images for photogrammetric control
No abstract available.
Authors
Kenneth L. Edmundson, Brent A. Archinal, Tammy L. Becker, J.A. Mapel, Mark S. Robinson, M.R. Shepherd
Regional patterns of Mesozoic-Cenozoic magmatism in western Alaska revealed by new U-Pb and 40Ar/39Ar ages Regional patterns of Mesozoic-Cenozoic magmatism in western Alaska revealed by new U-Pb and 40Ar/39Ar ages
In support of regional geologic framework studies, we obtained 50 new argon-40/argon-39 (40Ar/39Ar) ages and 33 new uranium-lead (U-Pb) ages from igneous rocks of southwestern Alaska. Most of the samples are from the Sleetmute and Taylor Mountains quadrangles; smaller collections or individual samples are from the Bethel, Candle, Dillingham, Goodnews Bay, Holy Cross, Iditarod, Kantishna...
Authors
Dwight Bradley, Marti L. Miller, Richard M. Friedman, Paul W. Layer, Heather A. Bleick, James V. Jones, Steven E. Box, Susan M. Karl, Nora B. Shew, Timothy S. White, Alison B. Till, Julie A. Dumoulin, Thomas K. Bundtzen, Paul B. O'Sullivan, Thomas D. Ullrich
Geologic controls on submarine slope failure along the central U.S. Atlantic margin: Insights from the Currituck Slide Complex Geologic controls on submarine slope failure along the central U.S. Atlantic margin: Insights from the Currituck Slide Complex
Multiple styles of failure, ranging from densely spaced, mass transport driven canyons to the large, slab-type slope failure of the Currituck Slide, characterize adjacent sections of the central U.S. Atlantic margin that appear to be defined by variations in geologic framework. Here we use regionally extensive, deep penetration multichannel seismic (MCS) profiles to reconstruct the...
Authors
Jenna C. Hill, Daniel S. Brothers, Bradley K. Craig, Uri S. ten Brink, Jason D. Chaytor, Claudia Flores
Recalibration of the Mars Science Laboratory ChemCam instrument with an expanded geochemical database Recalibration of the Mars Science Laboratory ChemCam instrument with an expanded geochemical database
The ChemCam Laser-Induced Breakdown Spectroscopy (LIBS) instrument onboard the Mars Science Laboratory (MSL) rover Curiosity has obtained > 300,000 spectra of rock and soil analysis targets since landing at Gale Crater in 2012, and the spectra represent perhaps the largest publicly-available LIBS datasets. The compositions of the major elements, reported as oxides (SiO2, TiO2, Al2O3...
Authors
Samuel M. Clegg, Roger C. Wiens, Ryan B. Anderson, Olivier Forni, Jens Frydenvang, Jeremie Lasue, Agnes Cousin, Valerie Payre, Tommy Boucher, M. Darby Dyar, Scott M. McLennan, Richard V. Morris, Trevor G. Graff, Stanley A Mertzman, Bethany L. Ehlmann, Ines Belgacem, Horton E. Newsom, Ben C. Clark, Noureddine Melikechi, Alissa Mezzacappa, Rhonda E. McInroy, Ronald Martinez, Patrick J. Gasda, Olivier Gasnault, Sylvestre Maurice
Ground-rupturing earthquakes on the northern Big Bend of the San Andreas Fault, California, 800 A.D. to Present Ground-rupturing earthquakes on the northern Big Bend of the San Andreas Fault, California, 800 A.D. to Present
Paleoseismic data on the timing of ground-rupturing earthquakes constrain the recurrence behavior of active faults and can provide insight on the rupture history of a fault if earthquakes dated at neighboring sites overlap in age and are considered correlative. This study presents the evidence and ages for 11 earthquakes that occurred along the Big Bend section of the southern San...
Authors
Katherine M. Scharer, Ray J. Weldon, Glenn Biasi, Ashley Streig, Thomas E. Fumal
Broadband seismic noise attenuation versus depth at the Albuquerque Seismological Laboratory Broadband seismic noise attenuation versus depth at the Albuquerque Seismological Laboratory
Seismic noise induced by atmospheric processes such as wind and pressure changes can be a major contributor to the background noise observed in many seismograph stations, especially those installed at or near the surface. Cultural noise such as vehicle traffic or nearby buildings with air handling equipment also contributes to seismic background noise. Such noise sources fundamentally...
Authors
Charles R. Hutt, Adam T. Ringler, Lind Gee
Solving for source parameters using nested array data: A case study from the Canterbury, New Zealand earthquake sequence Solving for source parameters using nested array data: A case study from the Canterbury, New Zealand earthquake sequence
The seismic spectrum can be constructed by assuming a Brune spectral model and estimating the parameters of seismic moment (M0), corner frequency (fc), and high-frequency site attenuation (κ). Using seismic data collected during the 2010–2011 Canterbury, New Zealand, earthquake sequence, we apply the non-linear least-squares Gauss–Newton method, a deterministic downhill optimization...
Authors
Corrie Neighbors, Elizabeth S. Cochran, Kenneth Ryan, Anna E. Kaiser