Browsing OU - Theses by Author "Chen, Xiaowei"
Now showing items 1-16 of 16
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Aftershock decay in space and time of induced seismicity in Oklahoma
Rosson, Zachary (2019-05-10)The current paradigm for estimating long-term seismic hazard in a region includes removing dependent earthquakes that occur after a mainshock, otherwise known as aftershocks, from an earthquake catalog to identify the ... -
Aspects of Seismicity Clustering, Subsurface Structure, and Stress Orientations
Ortega Romo, Angie (2020-05-08)I study aspects of seismicity clustering, subsurface structures and stress orientations by analyzing seismicity at two of the most seismically active regions in the USA (Hawaii and Central USA). The notable volcanic, ... -
Comparison of Surface and Downhole Microseismic Acquisition
Rohan, Kara (2017-12-16)The most common microseismic monitoring methods used in the industry today are by the use of surface arrays and downhole arrays. In surface acquisition, sensors are deployed on the surface in large two-dimensional arrays, ... -
Development of a State-Wide Velocity Profile in Oklahoma Using Ambient Noise Seismic Tomography
Marsh, Stephen (2018)Earthquakes have been a growing concern in the state of Oklahoma in the last several years and as a result, prediction of the ground motion, understanding of subsurface geological structure, and the estimation of accurate ... -
Diffraction imaging using Geometric-mean Reverse-Time Migration and Common Reflection Surface
Yin, Jianhang (2017-12)Diffracted waves contain a great deal of valuable information about small-scale subsurface structure such as faults, pinch-outs, karsts and fractures, which are tightly related to hydrocarbon accumulation and production. ... -
FAULT RUPTURE PROCESSES DURING HIGH VELOCITY ROTARY SHEAR EXPERIMENTS
Zu, Ximeng (2016-05-13)High velocity shear experiments can provide information on fault rupture processes that seismological methods cannot. The present study focuses on two main aspects of fault rupture processes. One is developing a new, ... -
INVESTIGATION OF FAULTING PROCESSES OF TWO M5 EARTHQUAKE SEQUENCES IN OKLAHOMA
Pennington, Colin (2017-05)I investigate the stress interaction inside different earthquake clusters to better understand the factors that might drive and control seismicity. I examine a catalog of 6226 events that have been relocated using the ... -
MULTISCALE SPATIOTEMPORAL ANALYSES OF SEISMICITY AND WASTEWATER INJECTION IN OKLAHOMA
Haffener, Jackson (2017-05)The increase in seismicity in Oklahoma since 2009 has been primarily attributed to wastewater disposal, however, the extent and nature of the relationship is not clear. On the state level, there is no statistically significant ... -
A Retrospective, Machine-learning Assisted Analysis of Seismic Sequence Migrations in Oklahoma and Delineating Fault Structures
Sims, Kaycee (2022)Seismogenic fault geometries are important to understanding the seismic potential of fault slip in natural systems. Their orientation relative to the principal tectonic stress directions control their susceptibility to ... -
Seismic Characterization of Intra-basement Deformation and its Influence on the Overlying Sedimentary Strata: Implications for Tectonic Evolution and Induced Seismicity in Northern Oklahoma
Firkins, Max (2021)Patterns of recent seismogenic fault reactivation in the granitic basement of north-central Oklahoma necessitates an understanding of the structural characteristics of the inherited basement-rooted faults. We analyze the ... -
Seismic Radiation During Slip Along Bi-material Faults: An Experimental Investigation
Shadoan, Tanner (2019-05-10)Large slip along faults is likely to place crustal blocks of different lithological and mechanical properties against one another, a process that forms a bi-material fault. To explore the behavior of such faults, I conducted ... -
Seismic Reprocessing of a Granite Wash Survey, Buffalow Wallow Field, Anadarko Basin, Texas
Olorunsola, Oluwatobi (2017-12-16)Although considered one of the more productive oil and gas reservoirs in the United States, the Pennsylvanian-age Granite Wash reservoir remain poorly understood. Amongst a myriad of issues that hinder development of ... -
SEISMICITY AND SOURCE SPECTRA ANALYSIS IN SALTON SEA GEOTHERMAL FIELD
Cheng, Yifang (2016)The surge of “man-made” earthquakes in recent years has led to considerable concerns about the associated hazards. Improved monitoring of small earthquakes would significantly help understand such phenomena and the underlying ... -
Stress Analysis of Recent Earthquakes in Oklahoma
Qi, Wen (2016-07)The central US, especially Oklahoma, has become a seismically active region since 2009. Knowing the current stress state of the crust in Oklahoma is essential for understanding this activity increase. My thesis focuses on ... -
Study of stress field in seismogenic processes in Oklahoma
Qin, Yan (2017)The recently increased seismicity in Oklahoma provides a rich catalog that delineates unmapped fault system. In this project, I identify 88 clusters with 20 or more earthquakes using automatic nearest-neighbor approach. ... -
Towards the Usage of Quarry Blasts as Active Seismic Source
Li, Peiyao (2018)Active seismic sources are often used to obtain subsurface structure via seismic imaging. The geophone’s capability to capture signals at lower frequencies is significantly improved, thus, we are no longer restricted to ...