PPT-Body and Surface Wave Seismic Tomography for Regional Geoth

Glenn Biasi 1 Leiph Preston 2 and Ileana Tibuleac 1 Nevada Seismological Laboratory University of Nevada Reno Reno NV 89557 2 Sandia National Laboratory Albuquerque NM Overview. Seismic velocities – P & S. Relationship to elastic moduli. Seismic anisotropy. . -- directional variation in seismic velocity. Seismic Attenuation – 1/. Q. p. & 1/Q. s. . -- What is seismic attenuation?. Meteor Crater, Arizona. Soumya. Roy, Ph. D. Student. Advisor: Dr. Robert R. Stewart. AGL Annual Meeting. University of Houston, 2. nd. May 2012. Journey Through . A. n . Astrobleme. Objectives . Meteor Crater, Arizona. Schmandt. and Humphreys, . 2011. - Tomographic velocity models - Upper mantle discontinuity structure - Anisotropic structure of lithosphere. Seismic tomography models from . USArray. (and other) data. Receiver Functions. Body Wave Tomography. Surface (Rayleigh) wave tomography. Good for: Imaging discontinuities. . (. Moho. , . sed. /rock interface, 410). Weakness: can’t see gradients. . can’t constrain velocities well. Earthquake. – shaking and trebling that results from the movement of rock beneath Earth’s surface.. Plate movement causes earthquakes from stress and faults in Earth’s crust. When the rock breaks earthquakes happen. Spun-off . back into Medical Imaging. ?. S. . Hancock. 2. What is Tomography?. Here is a . trivial . density distribution and six of its projections. The aim of tomography . in this example is . to . 3D seismic reflection image of the . Nankai. Subduction zone, Japan. Seismic Sources: Land Surveys. Many options! Hammer, weight-drop, dynamite, . vibroseis. . What frequencies are needed?. What energy level is needed (what distances do you need to cover)?. Altai-. Sayan. Branch of Geophysical Survey Siberian Branch of the RAS. Geophysical Survey of . Siberian Branch of the RAS. Three seismological branches with regional scale seismic networks:. Altay-. Birhanu. . Abera. Managing . Data from . Seismic Networks. Pretoria. , . South Africa. 20 Aug . 2017. Outline. Introduction. M. ap of the current . ESSN . network. Data Acquisition and processing. D. Core Contractors are your trustworthy team of Seismic Retrofit Contractors Los Angeles and surrounding areas that comply with the Los Angeles retrofit requirements and other municipalities in the retrofitting of buildings just like yours. Outline. Motivation for quantum tomography. Framework for self-consistent, calibration-free tomography: . Gate set tomography. Achieving Heisenberg accuracy scaling with gate set tomography. Using gate set tomography to build a better trapped ion qubit at Sandia National Laboratories. Yichuan Wang. 1. Purpose of Seismic Processing. 2. Seismic Processing Sequence. 3. Summary. Outline. 1. Purpose of Seismic Processing. To suppress noise in the field data and enhance the reflection. s. teleseisms. ), the waves of greatest amplitudes are generally surface waves that have followed the Earth’s surface and not penetrated the interior. The exceptions are seismograms of deep focus earthquakes, which are not effective generators of surface waves, so that the body waves are more prominent. The dominance of surface waves on . . EGU 2020. Ilaria Barone. Emanuel. . Kästle. Claudio . Strobbia. Giorgio . Cassiani. realtimeseismic. Università degli Studi di Padova. 2D SURFACE WAVE . tomograpHY. USING ACTIVE SEISMIC . DATA.