PPT-An array analysis of seismic surface waves

James Gaherty and Ge Jin LDEO Columbia University Thoughts and Overview Surfacewaves from earthquake sources provide powerful tool for probing upper mantle structure beneath arrays Good depth resolution. 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. and . Pyjamaseis. 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?. 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. T.O.C. Earthquakes Release Energy. Energy from Earthquakes Travels through Earth. Rock/pond comparison. . Earthquake energy travels up, down, and to all sides.. Seismic waves. (-. w.w. - vibrations of energy caused by earthquakes. . 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 . 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: . For a quick laugh…. Geologists use 2 terms when discussing the location of an earthquake:. Focus. . = The area beneath Earth’s surface where the rock that is under stress actually breaks.. Epicenter. 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 . travels as seismic waves in all directions through the. Earth’s layers, reflecting and refracting at each. interface. These waves are of two types - . body waves. and . surface waves; the latter are restricted to near the. 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?. 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)..