Earthquake exploration[1]

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Earthquake exploration[1]

  1. 1. EarthquakeExplorationBy: Delaney Ryan
  2. 2. 2010, Last Year (Map #1)
  3. 3. Map #2 with buffer lines The thick, yellow lines symbolize convergent boundaries and the green dots represent big earthquakes.
  4. 4. Map #3 Big Earthquakes
  5. 5. What have you learned about earthquakes andearthquake prediction?Earthquakes are classified by a scale called the Richter scale, whichranges from 0-10 where 0 being the weakest and 10 the strongest. Withthis, scientists can rate the earthquake, but they are also learning howto predict one. The happening of earthquakes on Earth is not arandom act of movement. Earth is made up of plates that are movingfrequently. Usually earthquakes accumulate along these plateboundaries. It is easy for scientists predict when an earthquake strikes,but predicting when, can be difficult. In the next section we talk aboutwhat factors contribute to good predicted earthquake estimates.
  6. 6. What have you learned about earthquakes and earthquakeprediction? (continued…)Since Earth is always moving,shifting and constantly beingpushed and pulled, much straincan be built up over time. Wehave learned that earthquakesoccur when strain has built upover a period of time is suddenlyreleased. When this happens thecrust begins to shake andtremble, this movement iscommonly referred to as anearthquake. In some casesearthquakes can cause damageto cities and towns and eventake lives, but depending uponthe earthquakes strength andthe location of the scene,earthquakes can be harmless orbarley even felt by people.
  7. 7. What factors influence earthquake prediction? There are many different factors involved with earthquake prediction, one being the study of past events. Scientists will study the earthquake’s intensity is a specific place in order to help them predict what the next earthquake will be like that hits that location. Scientists would have been able to figure out the exact time of when an earthquake hits but due the very deep earth crust, they are unable too. However, they can use more factors to get them to a very close prediction Can lead too
  8. 8. What factors influence earthquake prediction?(continued…)Satellites are a more recent tool that scientists are using, withsatellites scientists can see changes in ground motion as well asdetermining where areas of high strain are building up.Earthquakes can be spotted sometimes when groundtemperature rapidly increases. Scientists can get the informationby looking at infrared radiation which shares information onground temperature. Seismographs are another factor inearthquake prediction, they tell scientists about groundmovement along seismic waves. From past earthquakes too deepinto the ocean and as far out as space, it all comes together tocreate a scientific earthquake prediction.
  9. 9. Where on Earth do most of the really big earthquakes strike?Earthquakes in general happen along oceanic andcontinental plates and unusually big earthquakes happenon the same plates but the amount of stress and straincan contribute to a bigger (or smaller) outcome. Someexamples of places that get bigger earthquakes are;Western North America, Western South America andislands off the coast of East Asia.
  10. 10. Top 10 areas
  11. 11. Area 1: (Alaska, southern) I chose this area because Inoticed that many earthquakes have occurred there in thepast year, leading to foreshocks and eventually and possiblya big earthquake.Area 2: (California, Western North America) I chose thisarea because California is a more common place whereearthquakes big and small occur.Area 3: (Mexico, Northern Latin America) I chose this areabecause it gets so many earth quakes each year.Area 4: (Chile, Western South America) The area waschosen because it is an area with not only a lot ofearthquakes in general but the area also contains manyBIG earthquakes as well.
  12. 12. Area 5: (Ice Land, in Pacific Ocean) I picked this area becauseit lies right on the pacific boundary and gets frequentearthquakes mostly small but occasionally bigger.Area 6: ( Southeastern Africa) This area was chosen becausealthough it doesn’t look like there are many earthquakes in thearea there actually are, they are just very spread out within thearea.Area 7: (Above Africa) I chose this area because it is anotherarea where there are MANY earthquakes clustered togetherand these could have been foreshocks leading up to a bigearthquake that could happen soon.
  13. 13. Area 8: ( Saudi Arabia) I chose this area due to the excessiveamounts of earthquakes this location gets, but most of theearthquakes are just small.Area 9: ( Southern/Central Asia) This location gets manyearthquakes and some of them are small but it also has amixture of larger ones as well.Area 10: (Japan/Eastern islands off the coast of Asia) I chosethis area because there are many earthquakes big and smallhere, also Japan just had a Huge 9.0 magnitude earthquakeprobably caused by foreshocks.
  14. 14. Bibliography http://en.wikipedia.org/wiki/Richter_magnitude_scale http://en.wikipedia.org/wiki/Interferometric_synthetic_aperture_rad ar http://serc.carleton.edu/eet/earthquakes2/case_study.html http://www.geerassociation.org/GEER_Post%20EQ%20Reports/Bhuj_ 2001/india_photo.htm http://www.fotolibra.com/gallery/49745/diagram-of-earthquake- illustration/ http://www.stanford.edu/group/radar/group.html http://denali.gsfc.nasa.gov/sci_hi/sci_hi_12_01/dec01.html http://www.windows2universe.org/earth/interior/plate_tectonics.ht ml http://www.visionlearning.com/library/module_viewer.php?mid=10 9

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