PPT-Seismic Surface Wave Tomography on dense 3D active data

EGU 2020 Ilaria Barone Emanuel Kästle Claudio Strobbia Giorgio Cassiani realtimeseismic Università degli Studi di Padova 2D SURFACE WAVE tomograpHY USING ACTIVE SEISMIC DATA. 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. 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. 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. What interactions can waves undergo?. Name: ________________ Date: ___________. . 6.P.1.1 Waves: Forces and Motion. EQ: What interactions can waves undergo?. Reflection... head your notes like this!. 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. . Seismic . Waves. . are shock . waves . given off by earthquakes. . There are 2 types:. 1. . Body Waves. . originate from the . focus. (. F. ). travel . through. . the earth. . They’re used to locate . 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 . Most of the material can be found at either:. Books:. Baker. , G.S., and . Jol. , H.J., eds., 2007, Stratigraphic Analysis using Ground Penetrating Radar: Geological Society of America,. Special Paper 432. 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: . 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 . Kurdistan Region- Iraq. Ministry of Higher Education . & Scientific Research. . Salahaddin. University- Erbil. Geology - 3th Year. 2. nd. Semester . Jan. . 202. 1. Lec.1. 2. Seismic Method . (Applied Seismology). The Ru Network on Microcomputers Running Python. But First…. Some REAL scientific analysis on data recorded by TC-1 seismometers in the Ru network:. To be Explained…. How do we know what’s inside the Earth?.