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.
Results
Showing 1 to 9 of 9 for “"Seismic networks"”.
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Seismic anisotropy and mantle dynamics beneath the central and western United States
… recent availability of high-quality broadband seismic data from the USArray and other seismic stations in the central and western United States (CWUS) provide a distinct opportunity to test different anisotropy-forming mechanisms. For the first part of the study, a total of 4138 pairs of …
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Apparent weekly and daily earthquake periodicities in the western United States, and evolution of Wadi Kubbania in Egypt
… western United State [sic]. Analysis of Apparent Seismicity Rate (ASR) in the western United States confirmed the existence of prominent spectral peaks with a period of 1 and 7 days. The number of recorded earthquakes on Sundays for the duration of 1963-2008 is about 5% higher than that on …
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Enhanced imaging of deep lithospheric and shallow near surface structures through innovations in seismic interferometry and array processing.
… four studies that develop and apply passive seismic imaging methods to investigate Earth structure across a range of scales, from the shallow near-surface to the deep upper mantle. The first study uses array analysis of ambient noise autocorrelograms recorded by a dense nodal array near …
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The CAFE Experiment : a joint seismic and MT investigation of the Cascadia Subduction System
… of data using dense arrays of collocated seismic and magnetotelluric stations located in the Cascadia subduction zone region of central Washington. In the migrated seismic section, we clearly image the top of the slab and oceanic Moho, as well as a velocity increase corresponding to the …
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Passive Seismic Tomography and Seismicity Hazard Analysis in Deep Underground Mines
Seismic tomography is a promising tool to help understand and evaluate the stability of a rock mass in mining excavations. Lab measurements give evidence that velocities of seismic wave propagations increase in high stress areas of rock samples. It is well known that closing effects of cracks under …
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Seismicity and structure of the eastern Gawler Craton and Lake Eyre region
… region is associated with pronounced intraplate seismic activity and thick sedimentary cover that potentially obscures the elusive boundary between older Proterozoic and younger Phanerozoic eastern Australia. Despite this, the area had limited seismic data coverage due to its remoteness and the …
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Seismicity and structure of the eastern Gawler Craton and Lake Eyre region
… region is associated with pronounced intraplate seismic activity and thick sedimentary cover that potentially obscures the elusive boundary between older Proterozoic and younger Phanerozoic eastern Australia. Despite this, the area had limited seismic data coverage due to its remoteness and the …
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Application of passive seismic interferometry for local and shallow imaging
… natural resources, (ii) its influence on seismicity and associated hazards, and (iii) the insights it can provide into the evolution of geological landforms. Keeping in mind these motivations, I use passive seismic interferometry to image the shallow crustal structures. Conventional …
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Crustal structure and tectonics of Borneo and Sulawesi: results from receiver function analysis and virtual deep seismic sounding
… has no active volcanoes and little in the way of seismicity. By contrast, the adjacent island of Sulawesi features active subduction and a network of continental transform faults that give rise to high levels of earthquake activity. How this central region of southeast Asia was formed, and the …