University of Nevada, Reno
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Browsing Geological Sciences and Engineering by Title
Now showing items 1-20 of 125
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2D Analysis of Earthquake Ground Motion in Haifa Bay, Israel
(4/1/2010)We study the earthquake response of the Zevulun Valley basin, underlying northern Israel’s largest urban area, with 2D viscoelastic seismic modeling of a detailed geological section. We found that amplification of the ... -
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3D geophysical inversion modeling of gravity data to test the 3D geologic model of the Bradys geothermal area, Nevada, USA
(2016)Three-dimensional geophysical inversion modeling of gravity data has been performed to test the validity of a 3D geologic model constructed for the Bradys geothermal area. Geophysical modeling was implemented in three ... -
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A combined first-arrival travel time and reflection coherency optimization approach to velocity estimation
(3/1/1997)We present a nonlinear optimization method for two-dimensional velocity estimation in strongly heterogeneous media. We achieve this by designing a simulated-annealing algorithm to simultaneously maximize reflection coherency ... -
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A comparison of strain rates and seismicity for Fennoscandia: depth dependency of deformation from glacial isostatic adjustment
(2015)We investigate the influence of the glacial isostatic adjustment (GIA) on the deformation at the surface and at seismogenic depths in Fennoscandia. The surface strain rate field, derived from geodetic data, is controlled ... -
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A generalized simulated-annealing optimization for inversion of first-arrival times
(10/1/1994)We employ a Monte Carlo-based optimization scheme called generalized simulated annealing to invert first-arrival times for velocities. We use “dense” common depth point (CDP) data with high multiplicity, as opposed to ... -
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A Geodetic Strain Rate Model for the East African Rift System
(2018)Here we describe the new Sub-Saharan Africa Geodetic Strain Rate Model v.1.0 (SSA-GSRM v.1.0), which provides fundamental constraints on long-term tectonic deformation in the region and an improved seismic hazards assessment ... -
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A lattice grain model of hillslope evolution
(2018)This paper describes and explores a new continuous-time stochastic cellular automaton model of hillslope evolution. The Grain Hill model provides a computational framework with which to study slope forms that arise from ... -
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A magma mixing redox trap that moderates mass transfer of sulphur and metals
(2017)Mixing and juxtaposition of chemically distinct magmatic systems are key processes for the evolution of Earth's crust. Yet, the physicochemical nature at mixing interfaces remains poorly described, as crystallisation, ... -
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A paleoseismic transect across the northwestern Basin and Range Province, northwestern Nevada and northeastern California, USA
(2017)We use new and existing data to compile a record of similar to 18 latest Quaternary large-magnitude surface-rupturing earthquakes on 7 fault zones in the northwestern Basin and Range Province of northwestern Nevada and ... -
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A Robust Estimation of the 3-D Intraplate Deformation of the North American Plate From GPS
(2018)Glacial isostatic adjustment (GIA) is the main cause of deformation in intraplate North America. Here we use up to 3,271 Global Positioning System station velocities to image this 3-D deformation across the entire plate. ... -
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A seismic reflection image for the base of a tectonic plate
(2/5/2015)Plate tectonics successfully describes the surface of Earth as a mosaic of moving lithospheric plates. But it is not clear what happens at the base of the plates, the lithosphere–asthenosphere boundary (LAB). The LAB has ... -
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A Shallow Shear-Wave Velocity Transect across the Reno, Nevada, Area Basin
(12/1/2004)In October and November 2001, we performed an urban shear-wave velocity transect across 16 km of the Reno, Nevada, area basin. Using the refraction microtremor method of Louie (2001) we determined shear-wave velocity versus ... -
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A Transect of 200 Shallow Shear-Velocity Profiles across the Los Angeles Basin
(6/1/2006)This study assesses a 60 km north-northeast–south-southwest transect along the San Gabriel River for shallow shear velocities, in San Gabriel Valley and the Los Angeles Basin of southern California. We assessed a total of ... -
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Advanced seismic imaging for geothermal development
(Society of Exploration Geophysicists, 9/1/2012)In the geothermal fields of the Great Basin physiographic province of western North America, drilling success or failure often depends on hitting fault or fracture zones. Advanced seismic reflection imaging has proven to ... -
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Application of simulated annealing inversion on high-frequency fundamental-mode Rayleigh wave dispersion curves
(7/26/2007)The simulated annealing (SA) inversion technique has been successfully applied for solving various nonlinear geophysical problems. Following previous developments, we modified the SA inversion, yielding 1D shallow S-wave ... -
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Array analysis of reflector heterogeneity
(4/1/1991)In deep crustal reflection study, as in conventional exploration seismology, it is important to determine the geometry of the physical contrasts between rocks that cause reflections, to make reliable geologic interpretations. ... -
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Assessing the impact of vertical land motion on twentieth century global mean sea level estimates
(2016)Near-global and continuous measurements from satellite altimetry have provided accurate estimates of global mean sea level in the past two decades. Extending these estimates further into the past is a challenge using the ... -
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Assimilation of temperature and hydraulic gradients for quantifying the spatial variability of streambed hydraulics
(2016)Understanding the spatial and temporal characteristics of water flux into or out of shallow aquifers is imperative for water resources management and eco-environmental conservation. In this study, the spatial variability ... -
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Biogeochemical and microbial seasonal dynamics between water column and sediment processes in a productive mountain lake: Georgetown Lake, MT, USA
(2016)This manuscript details investigations of a productive, mountain freshwater lake and examines the dynamic relationship between the chemical and stable isotopes and microbial composition of lake bed sediments with the ... -
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Blind Shear-Wave Velocity Comparison of remi and masw Results with Boreholes to 200 m in Santa Clara Valley: Implications for Earthquake Ground-Motion Assessment
(12/1/2005)Multichannel analysis of surface waves (masw) and refraction microtremor (remi) are two of the most recently developed surface acquisition techniques for determining shallow shear-wave velocity. We conducted a blind ...
