Locating the Epicenter. Seismogram – seismic recording Seismometer – measures seismic waves Scientists who study earthquakes are called seismologists.

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Measuring Earthquakes

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Presentation transcript:

Locating the Epicenter

Seismogram – seismic recording Seismometer – measures seismic waves Scientists who study earthquakes are called seismologists

Seismogram – Seismic Recording

Earthquake damage is measured by 2 scales: Richter Scale 1-10 each increase of 1=10 fold increase in shaking (exponential) Mercalli Scale I-XII based on the damage to buildings and observed effects

Major Hazards of Earthquakes 1. Buildings and/or structures Collapse 2. Landslides 3. Fire from gas leaks 4. Tsunamis (Not Tidal Waves!)

How can you protect yourself? Secure heavy objects Identify shelters Plan evacuation route Prepare emergency medical kits Store food, supplies and fresh water Build earthquake resistant structures

Tsunamis Large ocean waves caused by underwater earthquakes Travel about 400 mph Pass Unnoticed at Sea, Cause Damage on Shore Warning Network Around Pacific Can Forecast Arrival Whether or Not Damage Occurs Depends on: Direction of Travel Harbor Shape Bottom Tide & Weather

B6m4Wghttp:// B6m4Wg

Use ESRT Page 11 and the difference between the P and S wave time to determine the epicenter distance

HOW MANY SEISMIC STATIONS DO YOU NEED TO FIND THE EPICENTER?

Locating Earthquakes

You need 3 seismic stations to find where the epicenter