PPT-Open questions in earthquake physics

and the contribution of array seismology JP Ampuero Caltech Seismolab Acknowledgements Lingsen Meng now at UC Berkeley Overview Earthquake physics how earthquakes start propagate and stop broader impact. 1 716 60 382 16 73 18 18 20 25 D4110 98 91 58 10 45 14 29 D4111 47 279 241 170 22 92 12 32 D4112 315 851 213 428 121 276 37 80 D4117 947 2358 1105 1357 647 823 95 493 86 86 D4124 283 494 152 358 173 499 296 3471 35 35 D4125 381 754 74 304 17 140 83 O 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. Hazard . Prediction Based on Seismicity . Simulation. . Shiyong. Zhou Russell Robinson . Xiaofei. Chen . M. Jiang . X. . Jin. . B. Gao . :. Analyzing Tweets for Real-Time Event Detection. Takehi. . Sakaki. Makoto Okazaki Yutaka Matsuo. @. tksakaki. @okazaki117 @. ymatsuo. . the University of Tokyo. Introduction. 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.. 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 . . 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. Briefly, “explain” the intent of this cartoon. Why do earthquakes occur?. Which of the following diagrams represents a normal fault? What is your evidence? . A.. B. .. TPS – What is going on here?. 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/. 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.. Agenda. Agree how we work within the Earthquake and Tsunami group. . how to . trigger. the System. (for EQS and TSU). GMPEs (or in term of MMI) vs population density for EQs. Expected tsunami height for .