PPT-Vector imaging of converted wave seismic data

Aaron Stanton and Mauricio Sacchi CSEG 2015 Motivation To migrate elastic data using elastic one way wave equation migration we first need to decompose the data into P and S potentials This is commonly achieved by Helmholtz decomposition. 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. Paul Sava. Department of Geophysics. Colorado School of Mines. Geophysics:. an . applied and interdisciplinary science. CSM Geophysics program. Department of Geophysics. Colorado School of Mines. College of Earth Resource Sciences and Engineering. of . Electromagnetic and Seismic . Wavefields. . International Symposium on Geophysical Imaging . with . Localized Waves. Sanya. , . Hainin. Island China. July 24-28, 2011. Gregory A. Newman. Earth Sciences Division. S. cience based Monitoring of. . Flood . Protection Levees:. Past, Present, and Future. Southeast Louisiana Flood Protection Authority-East Nunez . Community College . Auditorium. 3700 . Fenelon St. . Seismology: the study of earthquakes. Seismic waves: terminology, classification, the transfer of energy, how waves move. Measuring earthquakes. Layers of the Earth and seismic waves. What information a seismologist is able to interpret from a seismogram. Danny Hertel. EPS 109. Prof. . Militzer. Background/Method. As seismic waves travel through different mediums in the earth, the different mediums create different wave velocities. With geophones, the amplitude of the wave response can be measured at the surface and overlaid to create travel-time curves that tell what’s underneath.. Earthquake Mechanisms. Brittle Mechanical Model: “stick-slip”. Focal point: 3D point inside the lithosphere where the seismic event occurs. Epicenter: projection of focal point to the map surface . Part 1. Seismic Waves and Interior of the Earth. The behaviour of seismic waves in the different layers of the earth provides the most authentic evidence about the composition and structure of the earth. The different types of waves, generated during the occurrence of an earthquake, are generally divided into three broad categories: . Seismic waves: terminology, classification, the transfer of energy, how waves move. Measuring earthquakes. Layers of the Earth and seismic waves. What information a seismologist is able to interpret from a seismogram. 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 . San Antonio, Texas. May 2. nd. ,2013. Xinglu. Lin. 5/1/2013. 1. Reverse Time Migration (RTM). Original reverse-time migration (RTM) concept is a velocity model-dependent method which can migrate two-way waves in depth using the reverse-time backward propagated wave-field. . . EGU 2020. Ilaria Barone. Emanuel. . Kästle. Claudio . Strobbia. Giorgio . Cassiani. realtimeseismic. Università degli Studi di Padova. 2D SURFACE WAVE . tomograpHY. USING ACTIVE SEISMIC . DATA. Acronyms & Glossary. 10 October 2023. Acronyms & Glossary. 2. Numerical.  . 2D. -. Seismic survey conducted with a sparse series of lines across a target. . 2.5D. -. Restricted access 3D surveying, where only selected 2D lines are matched to the 3D baseline. (See MMV1 report)..