J. Ole Kaven

United States Geological Survey

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Stephen H. Hickman

United States Geological Survey

Nicholas C. Davatzes

Temple University

Robert J. Skoumal

Earthquake Science Center

David D. Pollard

Stanford University

J. I. Walter

Oklahoma Biological Survey

A. McGarr

United States Geological Survey

Jonathan Glen

United States Geological Survey

Phillip Dawson

United States Geological Survey

M. R. Brudzinski

Miami University

Andrew J. Barbour

United States Geological Survey

Cooperative Institutions

United States Geological Survey

Stanford University

Lawrence Berkeley National Laboratory

University of California, Berkeley

University of Wisconsin–Madison

Pacific Island Ecosystems Research Center

Earthquake Science Center

University of California, Santa Cruz

Southern California Earthquake Center

Lawrence Livermore National Laboratory

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Micro-seismicity within the Coso Geothermal field, California, from 1996-2012

J. Ole Kaven Stephen H. Hickman L. Weber

Microseism

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Citations (4)

Seismicity and coupled deformation modeling at the Coso Geothermal Field

J. Ole Kaven Stephen H. Hickman Nicholas C. Davatzes

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Citations (0)

The Induced Mw 5.0 March 2020 West Texas Seismic Sequence

Journal of Geophysical Research Solid Earth (2020)

Robert J. Skoumal J. Ole Kaven Andrew J. Barbour C. W. Wicks M. R. Brudzinski

Abstract On March 26, 2020, a M 5.0 earthquake occurred in the Delaware Basin, Texas, near the border between Reeves and Culberson Counties. This was the third largest earthquake recorded in Texas and the largest earthquake in the Central and Eastern United States since the three M 5.0–5.8 induced events in Oklahoma during 2016. Using multistation waveform template matching, we detect 3,940 earthquakes in the sequence with the first event in the area occurring in May 2018. The M 5.0 earthquake sequence occurred on a ENE (∼082°) normal fault dipping ∼37° toward the south. The earthquake caused 6 mm of oblique surface deformation, and geodetic slip inversion suggests slip was isolated above 6 km depth. We find that the sequence was most likely induced by nearby wastewater disposal operations, and seismicity rates in the region surrounding the M 5.0 will likely continue to increase in the future if disposal operations continue unaltered.

Sequence (biology)

10.1029/2020jb020693

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Citations (26)

Linear complementarity formulation for 3D frictional sliding problems

Computational Geosciences (2012)

J. Ole Kaven Stephen H. Hickman Nicholas C. Davatzes Ovunc Mutlu

Planarity testing

Complementarity (molecular biology)

Coulomb friction

Linear complementarity problem

Slipping

10.1007/s10596-011-9272-0

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Citations (9)

Constraining Surface Interpolations Using Elastic Plate Bending Solutions with Applications to Geologic Folding

Mathematical Geosciences (2008)

J. Ole Kaven Rafe Mazzeo David D. Pollard

Interpolation

Spline (mechanical)

Monocline

10.1007/s11004-008-9201-5

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Citations (8)

Microseismicity monitoring at the Decatur, IL, CO2 sequestration demonstration site

EGU General Assembly Conference Abstracts (2016)

J. Ole Kaven Stephen H. Hickman A. McGarr Sallie Greenberg

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Geometry of crustal faults: Identification from seismicity and implications for slip and stress transfer models

Journal of Geophysical Research Solid Earth (2013)

J. Ole Kaven David D. Pollard

Geometric complexities of faults and fault systems are first‐order effects that complicate the mechanics of faulting and physics of earthquakes. We investigate the importance of this complexity using relocated seismicity from a catalog of events for the Joshua Tree–Landers earthquake sequence and present a new method to locate faults or fault systems in clouds of seismicity. The abundance and ever improved accuracy of earthquake and microseismic location of such events permits a better understanding of the geometric intricacies of fault systems. The proposed method assumes that seismicity is most abundant in the central fault zone and the spatial density of seismicity is used to locate finite width fault zones and construct fault surfaces from the seismicity. The method is different from statistical fits (e.g., L1‐ and L2‐norm fits) in that it does not suppose a decay of seismicity from the central fault zone and that it identifies the tiplines of faults from the fault zone seismicity directly. In the Joshua Tree–Landers earthquake catalog, the method identifies 10 separate fault segments ranging in average strike from north‐south to east‐west that compare well with surface trace fault maps. These faults exhibit significant nonplanarity with the Joshua Tree fault departing from a planar approximation by more than 2000 m. The mechanical effects of the geometrically complex fault surfaces are illustrated by inverting for coseismic slip using surface displacements and when compared to slip inversions on planar faults reveal a more complicated pattern of slip on the fault. The low RMS error in surface displacement, the good match to geodetic moment, and robust estimates of maximum slip compare well to the results for planar faults. The inverted slip distributions are used to solve the quasi‐static fault stress transfer problem and estimate the tractions changes by slip on the Joshua Tree fault on the fault segments involved in the Landers earthquake. We find that the propensity for slip on the Landers faults increased in regions of initiation and largest slip during the subsequent event. The geometrically complex models predict greater likelihood for slip along the northern faults involved in the Landers earthquake than the commonly used planar and vertical four‐fault models.

Fault trace

Microseism

Elastic-rebound theory

10.1002/jgrb.50356

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Citations (20)

Using micro-seismicity and seismic velocities to map subsurface geologic and hydrologic structure within the Coso geothermal field, California

J. Ole Kaven Stephen H. Hickman Nicholas C. Davatzes

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Citations (3)

Geodetic Measurements and Numerical Models of Deformation at Coso Geothermal Field, California, USA, 2004–2016

Remote Sensing (2020)

Elena C. Reinisch Syed Tabrez Ali Michael Cardiff J. Ole Kaven K. L. Feigl

We measure transient deformation at Coso geothermal field using interferometric synthetic aperture radar (InSAR) data acquired between 2004 and 2016 and relative positions estimated from global positioning system (GPS) to quantify relationships between deformation and pumping. We parameterize the reservoir as a cuboidal sink and solve for best-fitting reservoir dimensions and locations before and after 2010 in accordance with sustainability efforts implemented in late 2009 at the site. Time-series analysis is performed on volume changes estimated from pairs of synthetic aperture radar (SAR) and daily GPS data. We identify decreasing pore-fluid pressure as the dominant mechanism driving the subsidence observed at Coso geothermal field. We also find a significant positive correlation between deformation and production rate.

10.3390/rs12020225

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Citations (9)

Unraveling the apparent magnitude threshold of remote earthquake triggering using full wavefield surface wave simulation

Geochemistry Geophysics Geosystems (2012)

Tom Parsons J. Ole Kaven A. A. Velasco Héctor González‐Huízar

Empirical studies with earthquake catalogs suggest that large events ( M > 5) are rarely triggered in significant numbers by passing surface waves at remote distances from main shocks. Triggered, small (M < 5) earthquakes are routinely associated with the passage of surface waves from large ( M > 7) main shocks. Since large earthquakes involve larger rupture areas, we study the spatial and temporal characteristics of dynamic stress change for clues. Using a 3D finite element method, we model the complete wavefield from the 2002 M = 7.9 Denali earthquake recorded near the Wasatch Front in Utah, where details about triggered seismicity are known. In particular, we load our model with a displacement seismogram to acquire a time series of the stress change tensor and model failure of a representative normal fault based on these stress changes. We note that the stress‐change regime varies rapidly between favoring strike‐slip, thrust, and normal faulting, with durations lasting ∼1–4 s. We find that these stress regimes usually affect only some fraction of a fault surface at any given time. Stress amplitudes also vary, meaning that ideal conditions for triggering are short‐lived and spatially limited. Stress conditions can also rapidly reverse to regimes that inhibit slip. Given these stressing conditions, we conclude that it may be difficult for a larger rupture area to experience the temporally and spatially coherent stress change necessary to develop into a large magnitude earthquake.

Seismogram

Thrust fault

Seismic moment

10.1029/2012gc004164

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Citations (17)