PPT-The M 5.7 Central Virginia Earthquake of August 23, 2011:

A Complex Rupture M C Chapman Department of Geosciences Virginia Polytechnic Institute and State University Blacksburg Virginia 24061 mcc vtedu Meeting of the Eastern Section Seismological. Andrei Gabrielov. Purdue University. West Lafayette, IN, USA. www.math.purdue.edu/~agabriel. San Francisco, April 18, 1906. Plate Tectonics. Major tectonic plates and world seismicity. Plate Tectonics. :. What You Need To Know. Tsunami Outreach Oregon. Oregon Department of . Geology . and Mineral Industries . Cascadia Earthquake: Key Messages. A local Cascadia earthquake will probably happen in most people’s lifetime or their children’s lifetime.. 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. Hazard . Prediction Based on Seismicity . Simulation. . Shiyong. Zhou Russell Robinson . Xiaofei. Chen . M. Jiang . X. . Jin. . B. Gao . Locating Earthquakes. How do seismologists know when and where earthquakes begin? . They depend on earthquake-sensing instruments called seismographs. . Seismographs. are instruments located at or near the surface of the Earth that record seismic waves. . Occurred just before midday on 25 April 2015. 7.8 Magnitude at a depth of around 15 . kilometres. The . epicentre. was the village of . Barpak. in the . Gorkha. district. The tremors were felt as far away as India, Pakistan and Bhutan.. . T. sunami . eqs. ETS/slow slip. Source Time Function Calculation . currently finishing STF determination for Alaska/Kuriles/Sumatra/Java. reconciling STF indicated depths with revised EHB catalog. From Science to Real Implementation. . Jair TORRES. UNESCO. Earth Sciences and Geo-Hazards Risk Reduction Section. Natural Sciences Sector. E. ARTHQUAKE . E. ARLY . W. ARNING. . S. YSTEMS. ???????. Magnitude and Intensity: M. w. 6.0 & 5.8; MMI VI-VII. Date: May 20. th. and 29. th. 2012. Today’s Presentation:. A short lecture activity sequence designed to engage students in learning about EQ epicenter location . Fukushima-. Daichi. nuclear power plant. Airport, Sendai, Japan. Earthquakes Past and Present. Sendai, Japan (8.9 magnitude). historical Seismicity Map. http://earthquake.usgs.gov/eqcenter/recenteqsww/. and humanitarian response. . L. essons . from Nepal. THE SCIENCE OF . AFTERSHOCK FORECASTING. Earthquakes can’t be predicted. However, aftershocks follow robust seismological . ‘laws’. Probability . Stage 1.. Magma rises to the crust within the mantle. This creates friction and causes the plates to move.. What are the 3 main ways plates move. 1.. 2.. 3. . Stage 2. Pressure builds between plates and sometimes small earthquakes are felt. . Earthquake Risk. Earthquakes are likely wherever plate movement stores energy in the rock along faults.. Geologists can determine earthquake risk by locating where faults are active and where past earthquakes have occurred.. earthquake. (also known as a . quake. , . tremor. or . temblor. ) is the result of a sudden release of energy in the . Earth's. . crust. that creates . seismic waves. . . The . seismicity. , . seismism.