A5007009780- earthquake and tectonic studies
- Seismology and Earthquake Studies
- Seismic Waves and Analysis
- Seismic Imaging and Inversion Techniques
- Geological and Geochemical Analysis
- Drilling and Well Engineering
- Rock Mechanics and Modeling
- High-pressure geophysics and materials
- Hydraulic Fracturing and Reservoir Analysis
- Underwater Acoustics Research
- Arctic and Antarctic ice dynamics
University of New Mexico
2023-2024
McGill University
2018-2022
Ruhr University Bochum
2019-2020
Abstract Source processes of injection‐induced earthquakes involve complex fluid‐rock interaction often elusive to regional seismic monitoring. Here we combine observations from a local seismograph array in the Montney Formation, northeast British Columbia, and stress modeling examine spatiotemporal evolution 30 November 2018 M w 4.2 (M L 4.5) hydraulic fracturing‐induced earthquake sequence. The isolated occurrence mainshock at depth ∼ 4.5 km crystalline basement 2 days following injection...
Abstract Recent earthquakes have demonstrated that rupture may propagate through geometrically complex networks of faults. Ancient exhumed faults the potential to reveal details at seismogenic depths. We present a new set field observational criteria for determining which population pseudotachylyte fault veins formed in same earthquake and apply it map representing single earthquakes. An exceptional exposure an ancient strand Norumbega Shear Zone preserves evidence multistranded deep zone...
Abstract Recent increases in earthquake occurrence rates Oklahoma have been linked to the injection of large volumes saltwater, a byproduct oil and gas extraction. Here we present detailed study remote triggering an area active injection‐induced seismicity northern using data from LArge‐n Seismic Survey (LASSO) temporary array nearby permanent broadband seismic stations. We estimate changes calculate Coulomb failure stress on potential receiver faults due passing teleseismic surface waves. A...
ABSTRACT The clustering behavior of injection-induced earthquakes is examined using one month data recorded by the LArge-n Seismic Survey in Oklahoma (LASSO) array. 1829-node seismic array was deployed a 25 km×32 km area active saltwater disposal northern between 14 April and 10 May 2016. Injection rates study are nearly constant around time deployment. We develop local magnitude (ML) equation for region estimate magnitudes 1104 determined earthquake range from ML 0.01 to 3.0. majority...
Abstract Spectral analysis is widely used to estimate and refine earthquake source parameters such as radius, seismic moment, stress drop. This study aims quantify the precision of single spectra empirical Green's function spectral ratio approach using Large‐ n Seismic Survey in Oklahoma (LASSO) array. The dense station coverage an area local saltwater disposal offers a unique opportunity observe radiation pattern effects subsequent estimates small earthquakes ( M < 3). results suggest...
Abstract Monitoring sea ice extent is critical to understand long-term trends in climate change. Here, we show that ambient noise recorded by fiber-optic sensing technology deployed an Arctic shallow marine seafloor environment can track extent. We use a 37.4 km long section of cable offshore Oliktok Point, Alaska. Data are analyzed for two weeks: one July 2021 and another November 2021, when there incomplete evolving coverage. apply different Machine Learning algorithms identify types...
Abstract We apply a machine learning (ML) earthquake detection technique on over 21 yr of seismic data from on-continent temporary and long-term networks to obtain the most complete catalog seismicity in Antarctica date. The new contains 60,006 events within Antarctic continent for 1 January 2000–1 2021, with estimated moment magnitudes (Mw) between −1.0 4.5. Most detected occurs near Ross Island, large ice shelves, streams, ice-covered volcanoes, or distinct isolated areas continental...
Source processes of injection induced earthquakes involve complex fluid-rock interaction often elusive to regional seismic monitoring. Here we combine observations from a local seismograph array in the Montney basin, northeast British Columbia, and stress modeling examine spatial temporal evolution 30 November 2018 M 4.5 hydraulic fracturing earthquake sequence. The mainshock occurred at ~ km crystalline basement two days following 2.5 km, suggesting direct triggering by rapid fluid pressure...
&lt;p&gt;The Western Canada Sedimentary Basin (WCSB) has experienced an increase in hydraulic fracturing (HF) operations the last decade, accompanied by number of felt earthquakes, including a M&lt;sub&gt;w&lt;/sub&gt; 4.6 on 17 August 2015 near Fort St. John and M&lt;sub&gt;L&lt;/sub&gt; 4.5 (M&lt;sub&gt;w&lt;/sub&gt; 4.2) 30 November 2018 Dawson Creek. While only small percentage HF induce seismicity, majority moderate-sized...
&lt;p&gt;Locating earthquakes has been a longterm problem in seismology that depends on multiple parameters like station density and spacing, azimuthal gap, velocity models, phase pick precision. Here, we analyze the current state of earthquake French catalog for time period between 2010 until 2018, which divide into different regions: Alps, Massif Central, West, Pyrenees, Grand-East North. We perform location synthetic tests using as benchmark evolution seismic network to quantify...