GEOLOGY STUDY GUIDE EARTHQUAKE Module exam GL3 June 2005 HAZARDS Geology Department, Greenhead College, Huddersfield. Bhuj, Gujarat earthquake (USGS) Seattle earthquake (CNN) 26 January 2001 28 February 2001 LEARNING TARGETS margin notes When you have completed this study guide, you will: know about the damage earthquakes can cause understand primary and secondary earthquake hazards be able to suggest ways in which earthquakes can be predicted have learned some case studies which show how hazardous earthquakes can be have learned how the damage from earthquakes can be reduced be able to answer a variety of examination questions on this topic. ______________________________________________________________________________________________________________________________ VC/Dept/Geol/002 page 1 GEOLOGY STUDY GUIDE Module exam GL3 June 2005 Resources Here is a choice of resources to use. You do not need to look at them all but clearly the more you read the better your knowledge of case studies will be. Tick the box once you have used the resource. If you read a photocopied extract then highlight it to help you reread it for revision. If you make notes from a video tape make sure that the notes are headed with the name of the tape so that you know the source of your information. Case studies are very useful for essay questions so you should keep a separate list of the examples that you have researched. EH1 EH2 EH3 EH4 EH5 EH6 EH7 EH8 EH9 EH10 EH11 EH12 EH13 EH14 EH15 EH16 Websites www.geolsoc.org.uk/ Go to Teaching Resources www.gsrg.nmh.ac.uk/turk.htm www.cnn.com/ Search earthquake www.vedur.is Understanding Geology David Webster p 14-15 Geoscience Dee Edwards and Chris King p 36-40 Video Tape Savage Earth Tape 31 Video Tape Raging Planet Tape 32 Video Tape Seismology at Work Tapes 7,13,18 Hopes fade as toll rises to 20,000. Gujarat earthquake. Guardian 29th Jan 2001 Tectonic hazards: earthquakes. P28-46 from Hazards and Responses by Victoria Bishop (library) Earthquake rocks Seattle 1/3/01 Central American Earthquake 15/1/01 Earthquakes – An Update Geofile April 1996. No 282 Earthquake prediction and earthquake-resistant building design Handout A shock at short notice Guardian Dec 4th 1997 China’s earth-shattering discovery Guardian Futures Jan 31st 1985 Natural Hazards – Causes, consequences and Management Frampton, Chaffey, Hardwick and McNaught p.57-73 (library) What to do in an Earthquake from ‘The Next Big Earthquake May Come Sooner Than You Think’ US Geological Survey. The two large earthquakes in the South Iceland seismic zone on June 17 and 21, 2000 A Sense of Disaster – Earthquake Prediction. Tape 44 50 mins. There are many other websites you could search. ______________________________________________________________________________________________________________________________ VC/Dept/Geol/002 page 2 GEOLOGY STUDY GUIDE margin notes Module exam GL3 June 2005 TASK 1 Revise your notes on earthquakes from GL1 Earth’s Structure. TASK 2 EARTHQUAKE DISTRIBUTION Mark on a world map the distribution of major earthquake zones. They are clearly related to tectonic plate margins. Label each tectonic plate on the map. Write a brief explanation in the map margin about why there is a close relationship between the two distributions. TASK 3 CLASSIFYING EARTHQUAKES Describe the two scales which measure the magnitude and the intensity of earthquakes. What are the main differences between the two scales? TASK 4 EARTHQUAKE HAZARDS Use as many resources as you can describe these main primary hazards which can be caused by earthquakes: Shaking Liquefaction Tsunamis and seiches Landslides, mudslides and avalanches As you use the resources complete a hazards checklist which will help you identify the important information in these articles and videos. TASK 5 DAMAGE TO THE PHYSICAL AND HUMAN ENVIRONMENTS Complete at least THREE hazard checklists to find out what secondary hazards earthquakes can cause. TASK 6 PREDICTION AND MONITORING PRECURSORS Earthquakes are not easy to predict. Find out about these methods of prediction and monitoring. Watch EH16 A Sense of Disaster on Earthquake Prediction and make notes on these subjects: Seismic activity and analysis of seismic gaps Strain gauges to measure surface tilting and bulging (dilation) Changes in water levels in wells and electrical resistivity of rocks Increases in gas radon levels in groundwater Satellite information on changes in ground levels Hazard mapping Anomalous animal behaviour Earthquake lights Go through your hazard checklists to research how each type of monitoring is used. Continue to research other resources until you are satisfied that you know about each type of monitoring method. Use this box for notes ______________________________________________________________________________________________________________________________ VC/Dept/Geol/002 page 3 GEOLOGY STUDY GUIDE margin notes Module exam GL3 June 2005 TASK 7 MANAGEMENT OF EARTHQUAKE HAZARDS Suggest ways of reducing the chances of earthquakes occurring and the ways in which damage might be reduced. Make notes on: Fluid injection and controlled stress release along faults Earthquake and tsunami hazard mapping Building safety codes Other estimations of earthquake risks in a region TASK 8 CASE STUDY ON THE SOUTH ICELAND EARTHQUAKES JUNE 2000 Read and discuss the passage. Write a paragraph summarising the success of the predictions mentioning the location, timing and magnitude of the earthquakes. TASK 9 EARTHQUAKES AND LEVELS OF ECONOMIC DEVELOPMENT Describe the differences between the effects of a major earthquake in a developed region, such as California or Seattle, compared with a less developed area such as Gujarat state (India) or Turkey. Use recent earthquakes as examples. TASK 10 EXAM QUESTION PACK Complete the Earthquake Hazards EQP 1 and 2 Deadline…………………………………… TASK 11 ESSAY QUESTION Here are two examples of recent essay questions on this topic. Use them for revision. 1. Explain what a geologist means by the expression ‘hazard prediction’. Illustrate your answer with reference to two different types of hazard prediction and comment on the problems associated with each of the two types of prediction. 2. Describe and discuss the factors that should be considered when undertaking a risk assessment exercise in an area prone to earthquakes. Use this box for notes ______________________________________________________________________________________________________________________________ VC/Dept/Geol/002 page 4