PPT-Largest Earthquakes since 1900

More than one or two its a dangerous surface Richter Scale logarithmic Earthquake Magnitudes Effects   Less than 35 Generally not felt   3554 . Move it, move it !!. What are they?. Fault: a break or fracture in the crust of Earth.. Earthquakes: shaking or trembling of the earth caused by movement along a fault.. Uplift: upward movement of Earth’s crust.. -Black. Shensi, China. When did this happen?. January 23, 1556. How many people died?. It is estimated that 830,000 people where killed in it.. The geological effects that were reported where ground fissures, uplift, subsidence, liquefaction, and landslides.. Deformation. The process of when a rock changes because of stress. Compression. -rocks push together (squeezing). Tension. -rocks pull away from each other (stretching). Rock layers bend when stress is placed on them. But when the stress is placed on rocks, they can reach their elastic limit and break. The Earths crust . The earths crust is in constant motion.. Volcanoes and earthquakes arise as sections of crust push . toghether. or pulled apart. Volcanoes and earthquakes are more common in certain parts of the world. By monitoring ground vibrations scientists can sometimes. Earthquakes are very difficult to predict.. Scientists understand why they happen, but it is very difficult to predict their . timing, exact location, and . strength. Pressure. build-up happens underground, over very long periods of . 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. Comparing and contrasting earthquakes. Have compared the impacts of earthquakes on a . MEDC. and a . LEDC. .. Have considered development as a key issue in . earthquake response. .. By the end of this section, you will: . Chapter 2 Section 3. Objectives. F.2.3.1. Explain how a seismograph works.. F.2.3.2. Describe how Geologists monitor faults.. F.2.3.3. . Explain how . seismograph data is used.. The Seismograph. Seismic waves cause the seismographs drum to vibrate but the suspended weight with the pen attached moves very little. Therefore the pen remains still and records the vibrations on the drum.. Essential . Questions. What are earthquake magnitude and intensity and how are they measured?. Why are data from at least three seismic stations needed to locate an earthquake’s epicenter?. Where are Earth’s seismic belts?. other non-linear motions. M. . A. Floyd. Massachusetts Institute of Technology, Cambridge, MA, USA. School of Earth . Sciences, University of Bristol. United Kingdom. 2–5 May 2017. Material from T. A. Herring, R. W. King, M. A. Floyd (MIT) and S. C. . Miles P. Wilson. Gillian R. Foulger, Jon G. . Gluyas. , Richard J. Davies & Bruce R. Julian. British Seismology Meeting. 5. th-. 7. th. April 2017. 1. Disclaimer and terminology. Study background. Earthquakes result from sudden motions along breaks in Earth’s crust and can affect landforms and societies.. An entire branch of Earth science, called . seismology. , is devoted to studying earthquakes.. AGRICULTURE. $38 . bil. .. 400 comm.. 50% fruits, nuts, veg. . 9/10 top producing counties in U.S. (6.6% total economic output). WHEAT. 1860-1890: Largest. “. bindlemen. ”. Decline: competition. ANNALS OF GEOPHYSICSVOL 47N 2/3April/June 2004regime consisting of central and local govern-ments canton and county Meanwhile there wasa reform and a standardization of the writing sys-tem From t