1 / 8

Understanding Earthquakes: Decoding Seismic Waves

Explore how seismograph stations help determine earthquake epicenters based on time lag between P and S waves. Discover the process scientists use to pinpoint the epicenter using multiple stations. Learn how to interpret seismic data and find the epicenter accurately.

saad
Download Presentation

Understanding Earthquakes: Decoding Seismic Waves

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. What Can We Learn From Seismic Waves? D24

  2. Seismograph stations can give us information about earthquakes. • Time lag • Is the time difference between the arrival of the two waves • Tells how far away you are from the epicenter, NOT the direction of the earthquake

  3. Determining how far away an earthquake happens

  4. P Waves show up on seismograph first, then S Waves • Near the epicenter, the time lag is short • Further away, the time lag is longer

  5. How scientists find the epicenter of an earthquake • Draw a circle around the station. • The epicenter can be anywhere in that circle. • Contact two other seismograph stations and find the lag time noted at each station. • Lag time tells how far the epicenter is from each station. • Draw a circle around each place and the epicenter is the point where all three circles come together.

  6. Finding the epicenter of an earthquake

  7. Seismograph stations can be found all over the world.

More Related