A5052396405- earthquake and tectonic studies
- Seismology and Earthquake Studies
- Seismic Imaging and Inversion Techniques
- Reservoir Engineering and Simulation Methods
- Hydraulic Fracturing and Reservoir Analysis
- Seismic Waves and Analysis
- Earthquake Detection and Analysis
- High-pressure geophysics and materials
- CO2 Sequestration and Geologic Interactions
- Geological and Geochemical Analysis
- Geological Modeling and Analysis
- Hydrocarbon exploration and reservoir analysis
- Turbomachinery Performance and Optimization
- Drilling and Well Engineering
- Geological Studies and Exploration
- Groundwater flow and contamination studies
- Rocket and propulsion systems research
- Rock Mechanics and Modeling
- Soil, Finite Element Methods
- Scientific Computing and Data Management
- Zeolite Catalysis and Synthesis
- Geological and Geophysical Studies
- Green IT and Sustainability
- Cyclone Separators and Fluid Dynamics
- Radiative Heat Transfer Studies
Lawrence Livermore National Laboratory
2017-2024
University of California, Riverside
2013-2017
University of Oklahoma
2017
Oklahoma Biological Survey
2017
United States Geological Survey
2017
University of California System
2015
University of Cincinnati
1979-1980
Research Article| June 10, 2015 Modeling Injection‐Induced Seismicity with the Physics‐Based Earthquake Simulator RSQSim James H. Dieterich; Dieterich Department of Earth Sciences, University California, 900 Avenue, Riverside, California 92521 U.S.A.keithrd@ucr.edu Search for other works by this author on: GSW Google Scholar Keith B. Richards‐Dinger; Richards‐Dinger Kayla A. Kroll Seismological Letters (2015) 86 (4): 1102–1109. https://doi.org/10.1785/0220150057 Article history first online:...
Abstract Fault zone structure is well known to exert strong controls on earthquake properties including coseismic slip distribution, rupture propagation direction, and hypocenter location. It has also been established that the principal surface, which accommodates majority of displacement, exhibits roughness at all scales following self‐affine fractal distributions. Here we explore relationship between fault specific distribution location based long‐term simulations catalogs fractally rough...
Induced seismicity related to industrial operations including carbon storage, geothermal energy, hydraulic fracturing or wastewater disposal has become increasingly common over the last 15 years. To continue these with minimal impact on sites, populations and economic conditions of operation, it is crucial better understand mechanisms that control induced earthquakes occurrence in both space time.This research focuses enhancing statistical forecasts (using seismogenic index model ETAS),...
Research Article| May 03, 2017 Poroelastic Properties of the Arbuckle Group in Oklahoma Derived from Well Fluid Level Response to 3 September 2016 Mw 5.8 Pawnee and 7 November 5.0 Cushing Earthquakes Kayla A. Kroll; Kroll aAtmospheric, Earth Energy Division, Lawrence Livermore National Laboratory, P.O. Box 808, L‐103, Livermore, California 94551 U.S.A., kroll5@llnl.gov Search for other works by this author on: GSW Google Scholar Elizabeth S. Cochran; Cochran bEarthquake Science Center, U.S....
We detect and precisely locate over 9500 aftershocks that occurred in the Yuha Desert region during a 2 month period following 4 April 2010 M w 7.2 El Mayor‐Cucapah (EMC) earthquake. Events are relocated using series of absolute relative relocation procedures include Hypoinverse, Velest, hypoDD. Location errors reduced to ∼40 m horizontally ∼120 vertically. Aftershock locations reveal complex pattern faulting with en echelon fault segments trending toward northwest, approximately parallel...
Abstract On 15 June 2010, a M w 5.7 earthquake occurred near Ocotillo, California, in the Yuha Desert. This event was largest aftershock of 4 April 2010 7.2 El Mayor‐Cucapah (EMC) this region. The EMC mainshock and subsequent Ocotillo provide an opportunity to test Coulomb failure hypothesis (CFS). We explore spatiotemporal correlation between seismicity rate changes regions positive negative CFS change imparted by event. Based on simple calculations we divide Desert into three subregions,...
Abstract It is well established that subsurface injection of fluids increases pore fluid pressures may lead to shear failure along a preexisting fault surface. Concern among oil and gas, geothermal, carbon storage operators has risen dramatically over the past decade due increase in number magnitude induced earthquakes. Efforts mitigate risk associated with injection‐induced earthquakes include modeling interaction between earthquake faults. Here we investigate this relationship simulations...
Abstract Seismic hazard forecasts of induced seismicity often require estimates the maximum possible magnitude ( M max ). Empirical models suggest that magnitudes, or expected number earthquakes, are related to volume injected fluid. We perform a suite 3D physics‐based earthquake simulations with rate‐ and state‐dependent friction, systematically varying area pressurized region amplitude initial homogeneous heterogeneous shear stress. Using resulting catalog we explore conditions result in...
SUMMARY Observational and modelling studies indicate that earthquake ruptures can jump between fault sections as large ∼3 ∼5 km for compressional extensional offsets, respectively. Here, we compare characteristics of the rupture process on parallel but offset from traditional 3-D dynamic simulations governed by slip weakening friction using finite element code, FaultMod, to those quasi-dynamic rate- state-dependent (rate-state friction) code RSQSim. These use spatially uniform initial...
We examine shear velocity anisotropy in the Yuha Desert, California using aftershocks of 2010 M7.2 El Mayor-Cucapah earthquake. The Desert is underlain by a complex network right- and left-lateral conjugate faults, some which experienced triggered slip during An automated method that implements multiple measurement windows range bandpass filters used to estimate fast direction (ϕ) delay time (δt) split waves. find an average ϕ oriented approximately north–south suggesting it primarily...
Abstract The geologic storage of carbon dioxide (CO2) is one method that can help reduce atmospheric CO2 by sequestering it into the subsurface. Large-scale deployment storage, however, may be accompanied induced seismicity. We present a project lifetime approach to address seismicity risk at these sites. This encompasses both technical and nontechnical stakeholder issues related spans time period from initial consideration phase postclosure. These recommendations are envisioned serve as...
Manipulation of subsurface stresses through fluid injection/extraction may induce seismicity modulation overpressure along faults. Globally, most industrial operations do not significant earthquakes. However, the possibility inducing moderate to large earthquakes is recognized as a risk for basin-scale carbon dioxide (CO2) storage (Niass et al., 2017). One possible method reduce occurrence induced maintain only small (or zero) changes in extraction formation brine. For active pressure...
Abstract A series of four chemical explosions were detonated in a deep borehole within the Yucca Flat Dry Alluvium Geology (DAG) at Nevada National Security Site between 2018 and 2019. The two larger 50 tons (DAG‐2) 10 (DAG‐4) TNT equivalent yield triggered energetic aftershock sequences numbering 1392 347 microearthquakes, respectively, first days. No significant activity was observed for smaller 1‐ton (DAG‐1 DAG‐3). We used back‐projection method based on travel‐time migration stacking...
A study was conducted to determine experimentally the flow behavior in combined scroll nozzle assembly of a radial inflow turbine. Hot film anemometry technique used measure velocity scroll.
ABSTRACT Induced seismicity predominantly occurs along faults that are optimally oriented to the local principal compressive stress direction, and characterization of these orientations is an important component understanding seismic hazards. The rate in southern Kansas rapidly increased 2013 primarily due disposal large volumes wastewater into Arbuckle Group. Previously, this area were poorly constrained, which limited our complex faulting diverse earthquake mechanisms region. We use...
Abstract As carbon storage technologies advance globally, methods to understand and mitigate induced earthquakes become increasingly important. Although the physical processes that relate increased subsurface pore pressure changes have long been known, reliable forecast control seismic sequences remain elusive. Suggested reservoir engineering scenarios for mitigating typically involve modulation of injection rate. Some operators implemented periodic shutdowns (i.e., effective cycling rates)...
ABSTRACT: Rock fractures are the most important element of Enhanced Geothermal Systems (EGS) but we lack necessary data to predict combined effect temperature, flow, mechanics, and chemistry on forecasted effectiveness these for heat extraction power production. Here, seek quantify strength, deformation, hydraulic conductivity rock before after shear slip, at geothermal reservoir conditions. This information enables evaluation likelihood that hydraulically induced slip will improve...