Matthew Weingarten

Matthew Weingarten
San Diego State University | SDSU · Department of Geological Sciences

Dec 2009 B.Sc. Wisconsin; Dec 2015 Ph.D. Colorado

About

34
Publications
15,053
Reads
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1,787
Citations
Introduction
Integrated role of fluids, faults and stress in both natural and induced seismicity. Numerical modeling. Induced Seismic Hazard. Simulation-Optimization. Water level response to earthquakes. Dynamic permeability.
Additional affiliations
August 2018 - present
San Diego State University
Position
  • Professor (Assistant)
February 2016 - June 2018
Stanford University
Position
  • PostDoc Position
August 2010 - January 2016
University of Colorado Boulder
Position
  • PhD Student

Publications

Publications (34)
Article
Full-text available
The ability of fluid-generated subsurface stress changes to trigger earthquakes has long been recognized. However, the dramatic rise in the rate of human-induced earthquakes in the past decade has created abundant opportunities to study induced earthquakes and triggering processes. This review briefly summarizes early studies but focuses on results...
Article
Full-text available
Reinjection of saltwater, co-produced with oil, triggered thousands of widely felt and several damaging earthquakes in Oklahoma and Kansas. The future seismic hazard remains uncertain. Here, we present a new methodology to forecast the probability of damaging induced earthquakes in space and time. In our hybrid physical-statistical model, seismicit...
Article
Full-text available
Plain Language Summary Earthquakes are seldom reported in relation to fluid injection for salt mining. Here, we present a unique case of an earthquake sequence probably induced by such human activity in Changning (southwest China). The sequence began with a Ms 6.0 earthquake, which is an unprecedented magnitude and larger than the historical record...
Article
Full-text available
With the U.S. unconventional oil revolution, adverse impacts from subsurface disposal of coproduced water, such as induced seismicity, have markedly increased, particularly in Oklahoma. Here, we adopt a new, more holistic analysis by linking produced water (PW) volumes, disposal, and seismicity in all major U.S. unconventional oil plays (Bakken, Ea...
Article
Full-text available
Temporal fault-zone observations are important to betterunderstand the evolution of fault structure and stress configuration. However, long-term monitoringin the fault-zoneis rareafter alarge earthquake. Here, we use seismic data in the fault-zone at 1-km depth from the Taiwan Chelungpu-fault Drilling Project to study long-term anisotropy after the...
Article
Full-text available
Fault location and geometry are critical considerations in the reactivation of pre‐existing faults. Here, we combine relocated earthquake catalogs and focal mechanisms to delineate seismogenic faults in Oklahoma and southern Kansas and analyze their stress state. We first identify and map seismogenic faults based on earthquake clustering. We then o...
Article
Full-text available
Wastewater reinjection increases pore fluid pressure and can make faults frictionally unstable, triggering earthquakes. Little is known, however, about how regional geomechanical properties influence the likelihood that disposal will induce seismicity. We investigate the impact of preinjection conditions on the proportion of possible fault orientat...
Article
Full-text available
Large-scale wastewater disposal has led to a fast-paced reawakening of faults in the Oklahoma/Kansas region. High-resolution earthquake relocations show that the inventory of ancient basement faults in the study region differs from results of seismic surveys and geologic mapping focused on the sedimentary cover. We analyze the evolution of seismic...
Article
Full-text available
Large-scale wastewater disposal has led to a fast-paced reawakening of faults in the Oklahoma/Kansas region. High-resolution earthquake relocations show that the inventory of ancient basement faults in the study region differs from results of seismic surveys and geologic mapping focused on the sedimentary cover. We analyze the evolution of seismic...
Article
Full-text available
The Raton Basin has the highest number of earthquakes in Colorado and New Mexico from 2008 to 2010. The rate of both wastewater injection and earthquakes in the Basin increased dramatically starting in 1999 and 2000, respectively. We compare seismicity (ML 0.0-4.3) in the Raton Basin from 2008 to 2010 with the location of modeled pore pressure incr...
Article
Full-text available
Wastewater disposal in the central U.S. is likely responsible for an unprecedented surge in earthquake activity. Much of this activity is thought to be driven by induced pore pressure changes and slip on pre-stressed faults, which requires a hydraulic connection between faults and injection wells. However, direct pressure effects and hydraulic conn...
Article
Documentation and analysis of groundwater responses to induced earthquakes are important to better understand their influence on shallow groundwater systems and hydrogeological properties and processes. Here we show that induced seismicity in Oklahoma can cause changes of groundwater level over distances >150 km from the epicenter. We test existing...
Article
Full-text available
We present a methodology for calculating the cumulative probability of a known fault exceeding Mohr-Coulomb slip criteria from fluid injection. This graphical user interface is based on the concepts of quantitative risk assessment applied to hydrology and geomechanics, and accepts the following input parameters: fault strike and dip, well locations...
Article
The Mw 5.1 Fairview, Oklahoma, earthquake on February 13, 2016, and its associated seismicity produced the largest moment release in the central and eastern U.S. since the 2011 Mw 5.6 Prague, Oklahoma, earthquake sequence and is one of the largest earthquakes potentially linked to wastewater injection. This energetic sequence has produced five eart...
Article
On 1 June 2014 (03:35 UTC), an Mw 3.2 earthquake occurred in Weld County, Colorado, a historically aseismic area of the Denver-Julesburg basin. Weld County is a prominent area of oil and gas development, including many high-rate class II wastewater injection wells. In the days following the earthquake, the University of Colorado, with support from...
Thesis
Full-text available
Fluid-fault interaction in the subsurface is a critical driver of both natural and induced earthquakes. Fluid-pressure increases inside fault zones lower their frictional resistance to slip and make earthquakes more likely. Inversely, earthquakes also perturb the fluid-pressure field and cause observable changes in groundwater level. This dissertat...
Article
Full-text available
We present an overview of the current status of unconventional energy development, particularly of shale gas, and underground CO 2 storage as a measure to mitigate greenhouse gas increase in the atmosphere. We review their potential to induce seismicity, which has caused debates among related energy enterprises , engineers, researchers, and environ...
Article
Full-text available
An unprecedented increase in earthquakes in the U.S. mid-continent began in 2009. Many of these earthquakes have been documented as induced by wastewater injection. We examine the relationship between wastewater injection and U.S. mid-continent seismicity using a newly assembled injection well database for the central and eastern United States. We...
Article
Full-text available
Unconventional oil and gas production provides a rapidly growing energy source; however, high-production states in the United States, such as Oklahoma, face sharply rising numbers of earthquakes. Subsurface pressure data required to unequivocally link earthquakes to wastewater injection are rarely accessible. Here we use seismicity and hydrogeologi...
Conference Paper
Full-text available
Earthquake relocations and hydrogeologic modeling show that the Jones earthquake swarm, occurring near Oklahoma City since 2008, is linked to disposal wells injecting high volumes of water along the Nemaha Fault. Felt and recorded earthquakes in the Jones swarm began in 2008, approximately 15 km from four high-volume wastewater disposal wells. Thes...
Article
[1] We studied the 24-year record of water level responses in Devils Hole, Death Valley National Park, NV to dynamic crustal stresses from earthquakes. The continuous water level record exhibited 219 responses from earthquakes around the world, displaying hydroseismogram and coseismic offset types of response. We found that the water level in Devil...
Article
Devils Hole, a fluid-filled cavern in the Amargosa Desert, southern Nevada, USA, is a fault-dissolution depression in carbonate rock, and is habitat for the only naturally occurring population of the endangered Devils Hole Pupfish, Cyprinodon Diabolis. The pool lies at the intersection of several small aperture, northwest-trending, high-angle norma...
Article
Here we present quantitative measures of the morphological features of sediment from the Mars analog 1996 Skei∂arársandur Jökulhlaup at the hand-lens and microscopic scales. These features represent basaltic volcano/water or ice interactions.

Questions

Question (1)
Question
I'm working with vector data and need to be able to calculate moving window averages of attributes of those vector data. What is the most commonly used algorithm for moving window averages in the spatial domain?

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