PPT-1 Earthquake Polar

and Sensor Grids Community Grids Laboratory November 20 2008 Geoffrey Fox Community Grids Laboratory School of informatics Indiana University gcfindianaedu httpwwwinfomallorg. Are You Prepared To Ride It Out? We have heard it so many times –the “big one” is coming. In our lifetime, we still haven’t seen or felt that huge earthquake. That shouldn’t stop us from preparing. 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. Analyzing Tweets for Real-Time Event Detection. Takehi. . Sakaki. Makoto Okazaki Yutaka Matsuo. @. tksakaki. @okazaki117 @. ymatsuo. . the University of Tokyo. Introduction. A Complex Rupture?. M. C. Chapman. Department of Geosciences. Virginia Polytechnic Institute and State University. Blacksburg, Virginia 24061. mcc. @ vt.edu. Meeting of the Eastern Section, Seismological. ISTANBUL . | . Turkey. . | . Aug. . 25-29, . 2014 . Feasibility. . study. of a . nation. -wide . Early. . Warning. System: the . application. of the EEW software PRESTo on the . Italian. Strong Motion Network (RAN) . 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. . Rescue efforts are continuing in Nepal after a 7.9 magnitude earthquake killed hundreds of people.. Hospitals are inundated with the injured, while many survivors who have lost homes will be now sleeping . Hazards are produced from the response of energy released. Amount and duration are related to the amount of energy released. Which hazards do you know?. Earthquake Hazards. Tsunami: displacement of a large volume of water. . 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. 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. . Tectonic plates are huge rock pieces within the earth’s crust. The plates are usually marked by fractures or fault lines formed when the plates tear apart or slide or collide past each other. This results in a change of the earth’s interior masses which send out powerful shock waves with enough force to alter the surface of the earth. The shock waves can thrust up cliffs and open huge cracks on the ground leading to an earthquake event. 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.