PPT-Global Seismology

Chapter 4 Faults Red Earthquake an event of ground shaking usually caused by the rupturing of a fault within the Earth Who studies Earthquakes Seismologists waves Geophysicists. EARTHQUAKE FOCAL MECHANISMS (FAULT PLANE SOLUTIONS). Credits:. -Some slides provided by Dino Bindi (INGV) and A. Kelly (USGS). -Cox and Hart. Plate Tectonics – How it works.. -Stein and Wysession, An Introduction to seismology, earthquakes and . Science Trivia. . #3. Science Trivia. 1. What . do we call the study of solar system and the objects in it? A. Astrology, B. Astronomy, C. Meteorology. 2. . Which scientist would study rocks and minerals. Chapter :: 6. Snell’s Revenge!. Snell’s Law & Critical Refraction. Because seismic sources radiate waves in all directions. Some ray must hit interface at exactly the critical angle, . i. c. This critically oriented ray will then travel along the interface between the two layers. Presentation Outline. Location of Bhutan . Background . About Seismology Division. Ongoing programs and projects. National Seismic monitoring system. Systematic Data Merge System. Future Plans. Lo. With Seismology. Fabian Walter. 2009 – Dr. sc. ETH Zürich. 2004 – MSc University of Colorado, USA. 2002 – BSc Brigham Young University, USA. Host: Laboratory of Hydraulics, Hydrology and Glaciology . and . the contribution of array seismology. J.-P. . Ampuero. Caltech . Seismolab. Acknowledgements. : . Lingsen. . Meng. (now at UC Berkeley). Overview. Earthquake physics: how earthquakes start, propagate and stop? + broader impact. MEASURING GROUND MOTION. The first known instrument for earthquakes measurement is the Chang seismoscope built in China in 132 B.C. . Balls were held in the dragons’ mouths by lever devices connected to an internal pendulum. The direction of the epicenter was reputed to be indicated by the first ball released.. ● 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?. Seismogram Interpretation Wavefieldsin the Earth: SH wavesWavefieldsin the Earth: SH waves Wavefieldfor Seismology and the Earth’s Deep Interior Seismogram Interpretation Wavefieldsin the Earth: (All shook up.). Earthquakes can be frightening events. .. (Click on left image for short video.). Earthquakes. Usually happen near . faults.. (What are faults?). Many faults are near plate boundaries, but they can be anywhere and everywhere.. ing Seismology Lecture 5 Dr. P. Anbazhagan 1 of 2 7 Lecture 5 : Concept of Seismic magnitude and Intensity , earthquake size, different magnitude scales and relations. Topics Introduction Intensit http://bats.earth.sinica.edu.tw. . Institute of Earth Sciences. Academia . Sinica. Yifan. Yin*, Wen-Tzong Liang,. Chun-Chi Liu and Bor-Shouh Huang. History of BATS. Our missions:. To better monitor the earthquake activity in the Taiwan region. 24 . Feb . 2017. © A.R. Lowry . 2017. Last time: . Ray Theory. • Rays follow . Snell’s . Law. :. where . . is . angle of incidence. • From Snell. ’. s Law, the . ray parameter . (where . . Nov 11, 2009. Seismic Instrumentation Technology Symposium. B. John Merchant. Technical Staff. Sandia National Laboratories. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company,.