Publications
Filter Total Items: 7495
Combining conflicting Bayesian models to develop paleoseismic records—An example from the Wasatch Fault Zone, Utah Combining conflicting Bayesian models to develop paleoseismic records—An example from the Wasatch Fault Zone, Utah
Bayesian statistical analyses of paleoseismic data result in the probabilistic determination of earthquake times using geochronological data evaluated in the context of a stratigraphic model. However, a fundamental problem in paleoseismology is how to use the Bayesian approach to model sparse and/or conflicting geochronological datasets, such as those derived from sites exhibiting...
Authors
Christopher DuRoss, Scott E.K. Bennett, Richard W. Briggs, Stephen Personius, Ryan D. Gold, Nadine G. Reitman, Adam I. Hiscock, Shannon A. Mahan
Impact of pore fluid chemistry on fine-grained sediment fabric and compressibility Impact of pore fluid chemistry on fine-grained sediment fabric and compressibility
Fines, defined here as grains or particles, less than 75 μm in diameter, exist nearly ubiquitously in natural sediment, even those classified as coarse. Macroscopic sediment properties, such as compressibility, which relates applied effective stress to the resulting sediment deformation, depend on the fabric of fines. Unlike coarse grains, fines have sizes and masses small enough to be...
Authors
Junbong Jang, Shuang C. Cao, Laura A. Stern, Jongwon Jung, William F. Waite
Using stereo satellite imagery to account for ablation, entrainment, and compaction in volume calculations for rock avalanches on Glaciers: Application to the 2016 Lamplugh Rock Avalanche in Glacier Bay National Park, Alaska Using stereo satellite imagery to account for ablation, entrainment, and compaction in volume calculations for rock avalanches on Glaciers: Application to the 2016 Lamplugh Rock Avalanche in Glacier Bay National Park, Alaska
The use of preevent and postevent digital elevation models (DEMs) to estimate the volume of rock avalanches on glaciers is complicated by ablation of ice before and after the rock avalanche, scour of material during rock avalanche emplacement, and postevent ablation and compaction of the rock avalanche deposit. We present a model to account for these processes in volume estimates of rock
Authors
Erin Bessette-Kirton, Jeffrey A. Coe, Wendy Zhou
ShakeMap-based prediction of earthquake-induced mass movements in Switzerland calibrated on historical observations ShakeMap-based prediction of earthquake-induced mass movements in Switzerland calibrated on historical observations
In Switzerland, nearly all historical Mw ~ 6 earthquakes have induced damaging landslides, rockslides and snow avalanches that, in some cases, also resulted in damage to infrastructure and loss of lives. We describe the customisation to Swiss conditions of a globally calibrated statistical approach originally developed to rapidly assess earthquake-induced landslide likelihoods worldwide...
Authors
Carlo Cauzzi, Donat Fah, David J. Wald, John Clinton, Stephane Losey, Stefan Wiemer
Regional spectral analysis of moderate earthquakes in northeastern North America—Final Report to the Nuclear Regulatory Commission, Project V6240, Task 3 Regional spectral analysis of moderate earthquakes in northeastern North America—Final Report to the Nuclear Regulatory Commission, Project V6240, Task 3
We analyze the Fourier spectra of S+Lg+surface wave groups from the horizontal and vertical components of broadband and accelerogram recordings of 120 small and moderate (2< Mw
Authors
Jack Boatwright
Analysis of mean seismic ground motion and its uncertainty based on the UCERF3 geologic slip rate model with uncertainty for California Analysis of mean seismic ground motion and its uncertainty based on the UCERF3 geologic slip rate model with uncertainty for California
The Uniform California Earthquake Rupture Forecast v.3 (UCERF3) model (Field et al., 2014) considers epistemic uncertainty in fault‐slip rate via the inclusion of multiple rate models based on geologic and/or geodetic data. However, these slip rates are commonly clustered about their mean value and do not reflect the broader distribution of possible rates and associated probabilities...
Authors
Yuehua Zeng
Landslides triggered by the 14 November 2016 Mw 7.8 Kaikōura Earthquake, New Zealand Landslides triggered by the 14 November 2016 Mw 7.8 Kaikōura Earthquake, New Zealand
The 14 November 2016 MwMw 7.8 Kaikōura earthquake generated more than 10,000 landslides over a total area of about 10,000 km210,000 km2, with the majority concentrated in a smaller area of about 3600 km23600 km2. The largest landslide triggered by the earthquake had an approximate volume of 20(±2) M m320(±2) M m3, with a runout distance of about 2.7 km, forming a dam on the Hapuku...
Authors
C. Massey, D. Townsend, Ellen Rathje, Kate E. Allstadt, B. Lukovic, Yoshihiro Kaneko, Brendon A. Bradley, J. Wartman, Randall W. Jibson, D. N. Petley, Nick Horspool, I. Hamling, J. Carey, S. Cox, John Davidson, S. Dellow, Jonathan W. Godt, Christopher Holden, Katherine D. Jones, Anna E. Kaiser, M. Little, B. Lyndsell, S. McColl, R. Morgenstern, Francis K. Rengers, D. Rhoades, B. Rosser, D. Strong, C. Singeisen, M. Villeneuve
Laboratory tests of three Z‐Land Fairfield Nodal 5‐Hz, three‐component sensors Laboratory tests of three Z‐Land Fairfield Nodal 5‐Hz, three‐component sensors
We conduct a number of laboratory tests at the Albuquerque Seismological Laboratory to verify the self‐noise and fidelity in which 3 three‐component Fairfield Nodal Z‐Land, Generation 2, 5‐Hz sensors are able to record seismic signals. In addition to the incoherent self‐noise of the sensors, we estimate the sensitivity of the units in digital volts/m/s, the damping, and the free period...
Authors
Adam T. Ringler, Robert E. Anthony, M.S Karplus, Austin Holland, David C. Wilson
Characterizing the sponge grounds of Grays Canyon, Washington, USA Characterizing the sponge grounds of Grays Canyon, Washington, USA
Deep-sea sponge grounds are relatively understudied ecosystems that may provide key habitats for a large number of fish and invertebrates including commercial species. Glass sponge grounds have been discovered from the tropics to polar regions but there are only a few places with high densities of dictyonine sponges. Dictyonine glass sponges have a fused skeleton, which stays intact when...
Authors
Abby N. Powell, M. Elizabeth Clarke, Erica Fruh, Jason Chaytor, Henry M. Reiswig, Curt E. Whitmire
DDT and related compounds in pore water of shallow sediments on the Palos Verdes Shelf, California, USA DDT and related compounds in pore water of shallow sediments on the Palos Verdes Shelf, California, USA
For nearly two and a half decades following World War II, production wastes from the world's largest manufacturer of technical DDT (1-chloro-4-[2,2,2-trichloro-1-(4-chlorophenyl)ethyl]benzene) were discharged into sewers of Los Angeles County. Following treatment, the wastes were released via a submarine outfall system to nearshore coastal waters where a portion accumulated in shallow...
Authors
Robert P. Eganhouse, Erica L. DiFilippo, James Pontolillo, William H. Orem, Paul C. Hackley, Brian Edwards
Reductive dechlorination rates of 4,4′-DDE (1-chloro-4-[2,2-dichloro-1-(4-chlorophenyl)ethenyl]benzene) in sediments of the Palos Verdes Shelf, CA Reductive dechlorination rates of 4,4′-DDE (1-chloro-4-[2,2-dichloro-1-(4-chlorophenyl)ethenyl]benzene) in sediments of the Palos Verdes Shelf, CA
Wastes from the world's largest manufacturer of DDT (1-chloro-4-[2,2,2-trichloro-1-(4-chlorophenyl)ethyl]benzene) were released into the Los Angeles County municipal sewer system from 1947 to 1971. Following primary treatment, the effluent was discharged through a submarine outfall system whereupon a portion of the DDT and associated degradation products were deposited in sediments of...
Authors
Robert P. Eganhouse, Christopher R. Sherwood, James Pontolillo, Brian Edwards, Patrick J. Dickhudt
Seagrass impact on sediment exchange between tidal flats and salt Marsh, and the sediment budget of shallow bays Seagrass impact on sediment exchange between tidal flats and salt Marsh, and the sediment budget of shallow bays
Seagrasses are marine flowering plants that strongly impact their physical and biological surroundings and are therefore frequently referred to as ecological engineers. The effect of seagrasses on coastal bay resilience and sediment transport dynamics is understudied. Here we use six historical maps of seagrass distribution in Barnegat Bay, USA, to investigate the role of these vegetated...
Authors
Carmine Donatelli, Neil Kamal Ganju, Sergio Fagherazzi, Nicoletta Leonardi