Volcano
Correctly interpreting complex scattered wavefields to recover meaningful information about a medium is one of the most fundamental issues broached by seismologists. Such studies encompass the full spectrum of frequencies presented by seismic signals, and methods to identify coherency from otherwise...
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.294.7539 http://www.ees.nmt.edu/outside/alumni/papers/2012d_chaput_j.pdf |
| Summary: | Correctly interpreting complex scattered wavefields to recover meaningful information about a medium is one of the most fundamental issues broached by seismologists. Such studies encompass the full spectrum of frequencies presented by seismic signals, and methods to identify coherency from otherwise chaotic looking signatures vary as broadly as do the studied scales and media. This body of work investigates the use of two different branches of scattered wavefield experiments conducted on very different scales. Works detailing high frequency coda-related seismic interferometry applied to Erebus volcano on Ross Island, Antarctica, and P-wave receiver functions applied to the whole of West Antarctica are developed, with a variety of innovations and implications for future imaging efforts. Chapters 1 through 3 detail the results of a novel pseudo-reflection technique based on recently identified theoretical principles pertaining to the recovery of specular information from multiply scattered wavefields. Wavefield modal equipartitioning in the coda of high frequency transient signals such as icequakes |
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