PPT-GEOL 15 Introduction to Earthquakes

and Geologic Hazards 3 units Fall 2013 Section E4736 MampW 250415PM Room HMHU125 Jason Jay R Patton JasonPattonredwoodsedu httpscienceearthjaycompageid482. 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. 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 . 8.53. Write a narrative with supporting text describing the effects of the New Madrid Earthquakes of 1811-12 on the land and people of Tennessee. (G, H, . TN). Bell Ringer. : What might this map represent? Why do you think so? . 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: . 2. TODAYS . MATERIAL:. Introduction to the Course. The Quaternary . Period. Climatic . and Geologic Processes. Instructor:. Jason Robert Patton . Email: . Jason.Patton@humboldt.edu. . Office:. Founders Hall 22 . 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?. Earth’s Dynamic Crust. Original Horizontality (law of superposition):. Assumption . that sedimentary/igneous rocks form in horizontal layers . Deformity. Folded: Layers are bent/curved. Deformity. 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.. What are Destructive Forces?. A destructive force is a process that lowers or tears down the surface features of the Earth. . Examples of Destructive Forces:. Destructive forces can occur in many ways. The following are common examples of destructive forces:. William Mackaness, Carol Blackwood, Charlotte Graves. Institute of Geography. School of GeoSciences. University of Edinburgh. Drummond St, Edinburgh EH8 9XP. william.mackaness@ed.ac.uk. Earthquakes. Measure on a Richter scale 1-7.