Niu, Fenglin2013-03-082013-03-082012Wang, Xinling. "Imaging the Pacific Plate and transition zone beneath eastern Asia with receiver functions." (2012) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/70486">https://hdl.handle.net/1911/70486</a>.https://hdl.handle.net/1911/70486In this thesis, I applied receiver function techniques to the data recorded by national and regional broadband seismic networks of the China Earthquake Administration to image the mantle transition-zone structure beneath eastern Asia. I analyzed a total of 37427 receiver-function data. Significant topography on both the 410-km and 660-km discontinuities was clearly imaged in the 3D volume of CCP stacked images that cover an area of 102.5°-122.5°E and 22.0°-42.°N. 3D crustal and mantle velocity models were used in computing the Ps time move-outs to better image the absolute depths of the two discontinuities. The 660-km discontinuity is depressed up to 25 km along the east coast of China, indicating the presence of the subducted Pacific slab in the region. A double 660-km was observed beneath the Yellow Sea. The 410-km is depressed by as much as 15 km beneath the Quaternary Datong volcano located at the northeastern edge of the Ordos plateau in north China.57 p.application/pdfengCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.Earth sciencesGeophysicsThesisWangXTHESIS GEOL. 2012 WANG