Locating an earthquake
This presentation is the property of its rightful owner.
Sponsored Links
1 / 10

Locating an Earthquake PowerPoint PPT Presentation


  • 91 Views
  • Uploaded on
  • Presentation posted in: General

Locating an Earthquake. Learning Goal. Analyze seismic data to predict the location and magnitude of an earthquake. Types of Waves. Primary Waves – (P-Wave) Fastest wave and moves rock particles back and forth. Secondary Wave – (S-Wave) Slower and moves rock particles up and down.

Download Presentation

Locating an Earthquake

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Locating an earthquake

Locating an Earthquake


Learning goal

Learning Goal

  • Analyze seismic data to predict the location and magnitude of an earthquake.


Types of waves

Types of Waves

  • Primary Waves – (P-Wave) Fastest wave and moves rock particles back and forth.

  • Secondary Wave – (S-Wave) Slower and moves rock particles up and down


Determining distance

Determining Distance

  • By comparing the time difference between S and P waves we can calculate the distance an earthquake is from a seismograph station.


Calculating distance

Calculating Distance

  • P waves travel between 6 and 13 km/sec. S-waves are slower and travel between 3.5 and 7.5 km/sec. In most regions, study of numerous earthquakes with well-known epicenter locations results in an empirical S-P curve, such as the one shown to the right.


Magnitude

Magnitude

  • The magnitude of an earthquake provides a convenient measure of its size scaled to a small number usually less than 9. It is a unitless number, derived from the amplitude of ground motion associated with S-waves, adjusted for the distance between the epicenter and the seismograph station


Directions

Directions

  • Go to the following web site: http://www.sciencecourseware.com/virtualearthquake/vquakeexecute.html

  • Read through the Descriptions and directions.

  • Pick an earthquake to predict its location and magnitude.

  • Send your completion certificate to [email protected]


  • Login