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?. 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. ● What is Seismology?. ● What are Seismic Waves?: Types of Seismic waves. ● Where do Earthquakes Happen?. ● Why do Earthquakes Happen?. ● How is the Epicenter of an Earthquake Located?. ● How are Earthquakes Magnitude Measured?. 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. "Sirs, what must I do to be saved?" . 1. Convert; Converted. 2. transitive . verb. 1 - a . : . to bring over from one belief, view, or party to another . b : to bring about a religious conversion in . November 2012 Istanbul, Turkey. C. . Neagoe. , L.M. . Manea. and C. Ionescu. National Institute for Earth Physics, . Magurele-Ilfov. , Romania. . In . February 1977, the Department of Seismology from the Romanian Geophysical and Geological Institute (GGI) together with the Laboratory of Geodynamics of the Romanian Academy formed the Centre of the Earth Physics (CEP). In 1994, after a governmental decision, CEP was transformed in the National Institute for Earth Physics (NIEP). NIEP is coordinated by the Romanian Ministry of Education, Research, Youth and Sport. . 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)?. 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.. ITET G. . MAGGIOLINI . & . “The green . school. network. ” . present. . What. . is. an . earthquake. ?. An earthquake (also known as a quake, . tremor) . is the . shaking of the surface. of the Earth, resulting from the sudden release of energy in the Earth's lithosphere that creates seismic waves. . Possibly born into paganism (name from Aphrodite). Obeyed the gospel of Christ. Not just baptized, not just convinced – FULLY converted!. COMMITTED to the Work of Christ (2:25, 30). He was a brother. 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: . Alhakeem A . 1. , . Almubarak. H . 1. , Liu K . 1. , Al-. Bazzaz. W . 2 . 1. Missouri University of Science and Technology, Rolla, Missouri, United States, . . 2. Kuwait Institute for Scientific Research, Ahmadi, Kuwait. Part 2: Speed of sound, waves, and bedrock. Image credit: J. Louie, University of Nevada-Reno. Outline. Speed of sound. Waves. Bedrock. Urban and wildland environments. Importance for human activities. 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)..