cameron1

50 %
50 %
Information about cameron1
Education

Published on March 21, 2008

Author: Michelangelo

Source: authorstream.com

What is an Earthquake?:  What is an Earthquake? An earthquake is the vibration of the Earth caused by a rapid release of energy. The focus is point in the Earth where the release of energy originates. The location on the surface of the Earth directly above the focus is called the epicenter. An earthquake occurred on the Erie Fault 5 km below Ashtabula. Damage from the earthquake was greatest in nearby Chardon. The furthest report of shaking was recorded in Akron. Where was the earthquake's epicenter? :  An earthquake occurred on the Erie Fault 5 km below Ashtabula. Damage from the earthquake was greatest in nearby Chardon. The furthest report of shaking was recorded in Akron. Where was the earthquake's epicenter? The Erie Fault Ashtabula Chardon Akron The Elastic Rebound Theory:  The Elastic Rebound Theory Earthquakes are produced by the rapid release of elastic energy stored in rock that has been subjected to stresses. Once the strength of the rock is exceeded, it suddenly ruptures, causing the vibrations of an earthquake. Fault Movement:  Fault Movement A fault is a fracture in Earth’s crust that shows evidence of movement or displacement. Movement along faults can be sideways or horizontal (strike-slip) or vertical (dip-slip) as shown here. Earthquake Detection:  Earthquake Detection Seismographs are instruments that record earthquake waves. Essentially, a weight is suspended from a support that is attached to bedrock. When the bedrock vibrates, a pen records the earthquake on a rotating drum. Seismic Records:  Seismic Records Records of the ground motion are called seismograms. These are the sheets of paper removed from the rotating drum of the seismograph. Seismic Waves:  Seismic Waves Seismograms reveal that there are two types of seismic waves generated by rock slippage: Surface waves travel along the Earth’s outer layer Body waves travel through the Earth’s interior. Body waves are further divided into primary and secondary waves. Seismic Waves:  Seismic Waves P waves are push-pull waves. P waves compress and expand in the direction the wave is traveling. S waves move up and down at right angles to their direction of travel. Seismic Wave Arrivals:  Seismic Wave Arrivals Location: Off the coast of Central America Date: January 13, 2001 Time: 17:33:29 Magnitude: 7.1 Mw P waves arrive at the recording station first, then S waves , and finally surface waves. P waves travel about 1.7 times faster than S waves. Examine the seismogram below that shows a 26-minute long record of the seismic waves from the 1906 San Francisco earthquake as it was received by a seismograph station in Germany. Approximately how much time elapsed between the arrival of the first P and S waves? :  Examine the seismogram below that shows a 26-minute long record of the seismic waves from the 1906 San Francisco earthquake as it was received by a seismograph station in Germany. Approximately how much time elapsed between the arrival of the first P and S waves? 60 seconds 4 minutes 10 minutes 20 minutes Locating Earthquakes:  Locating Earthquakes The difference in velocities of P and S waves provides a method for locating the epicenter. The greater the length of the time between the first arriving P and S waves, the greater the distance the earthquake is away. In this example, an interval of 5 minutes indicates the earthquake was 3400 km away from the recorder. Locating Earthquakes:  Locating Earthquakes From the travel-time graph we get the distance to the earthquake, but how can we figure out the direction?? The precise location can be found if three seismic stations recorded the earthquake. Earthquake Distributions:  Earthquake Distributions Earthquakes occur in narrow zones marking the boundaries of the main plates.

Add a comment

Related presentations

Related pages

santana! (@Cameron1_) | Twitter

The latest Tweets from santana! (@Cameron1_). Mood: gettin to it. #
Read more

Chip Cameron | Facebook

Chip Cameron is on Facebook. Join Facebook to connect with Chip Cameron and others you may know. Facebook gives people the power to share and makes the...
Read more

Cameron aus Deutschland | Job, Gehalt, Ausbildung

Cameron GmbH in de mit 3,47 Punkten bewertet. Karriere, Gehalt und Betriebsklima
Read more

Cameron in Deutschland | 8 Job-Bewertungen

Cameron GmbH - 8 Arbeitgeber-Bewertungen von aktuellen und ehemaligen Mitarbeitern
Read more

Cameron1 by Mallory Russ on Prezi

Make your likes visible on Facebook? Connect your Facebook account to Prezi and let your likes appear on your timeline. You can change this under Settings ...
Read more

May Cameron | Facebook

May Cameron is on Facebook. Join Facebook to connect with May Cameron and others you may know. Facebook gives people the power to share and makes the...
Read more

Cameron eBook by Patricia Averill - 9781477177556 | Kobo

Lesen Sie Cameron von Patricia Averill mit Kobo. When is a zinnia not a zinnia? When the woman who plants it defies the canons of good taste. Add family ...
Read more

JAB Anstoetz Cameron 1-1286-032: Stoff für Vorhänge und ...

Stoff Cameron 1-1286 in Farbe 032 von JAB Anstoetz für 76,39 Euro pro Meter kaufen oder als genähte Gardine in Ihren Maßen bestellen. Beratung per E ...
Read more

Kirk Cameron (@kirk_cameron1) • Instagram photos and videos

See Instagram photos and videos from Kirk Cameron (@kirk_cameron1)
Read more

Cameron1 - YouTube

Veritas Radio - Grant Cameron - 1 of 2 - How Do UFOs and Aliens Fit Into the World That We Know? - Duration: 1:18:19. MANTICORE.COM 5,889 views
Read more