Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"Event relocation"”.
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Double-Difference Seismic Event Relocation: A Study of the Applications and Limitations of the Relocation Problem
Earthquake relocation provides refined earthquake catalogs based on additional considerations or data beyond the initial earthquake location estimates. Double-difference relocation, in particular, utilizes the assumption that ray paths in close proximity to one another will pass through a similar …
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Time-lapse Passive Seismic Velocity Tomography of Longwall Coal Mines: A Comparison of Methods
… (SIRT), double difference least squares event relocation, and least squares event relocation. The three methods were compared and contrasted to determine if one is superior and if event relocation improves the image. Also, the tomograms were analyzed to determine if passive seismic …
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P- and S- wave tomography of the crust and uppermost mantle in China and surrounding areas
… accurate travel-time calculation, ground-truth event relocation and seismogram fittings. These models can therefore be applied to reliable earthquake location. Geological, geodynamic, and volcanic implications of our models are discussed in this thesis. Our tomographic models provide new …
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Analysis and interpretation of clustered microseismicity at geothermal and petroleum reservoirs
… Italy during condensate reinjection. Analysis of events induced during ARCO's Deep Well Treatment and Injection project demonstrated "real-time" hypocenter modeling for hydraulic fracture diagnostics. The injection produced a hydraulic fracture that exhibited strong spatial asymmetry. Analysis of …
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Station Delays, Their Standard Deviations, and Event Relocations in the Reno-Area Basin from a Dense USArray Flexible Array Deployment during the 2008 West Reno Earthquake Swarm
… and 12 IRIS RAMP stations. This allowed relocation of 97 events in the West Reno/Mogul sequence during May-July 2008, using phase arrivals on all network and volunteer Texan stations. Hypoinverse runs showed no less location error with added Texans, but visually, the events are drawn into …