Video Guide to Aftershock Video
Dr. M Mustoe EOU

Terms (Vocabulary)
1. Seismic Intensity Map, Bedrock, Lagoon Mud, Amplified Ground Motions, Soft Stories, Soil Liquification, Base Isolation, Shake Table, Seismic Waves, Ground Motion. Laser Geodimeter, New Madrid Earthquake, 235,000 Square Miles ca 1811 1812 Compressional Stress, 1866 Charleston SC.

Places
San Francisco 18 April 1906, Loma Prieta 17 October 1989, Santa Cruz, Marina District Shook (4 times harder, Oakland 8-80, Oakland Bay Bridge, Santa Cruz, pacific Heights, Parkfield, Los Angeles, San Andreas, Hayward Fault, Mississippi River Valley Probabilities, Magnitude 6 should occur every 60 to 90 years. Over 100 years since the last one. Since the late 17th century 16 quakes larger than M6 have occurred in Eastern North America.

Concepts
50 second shock The Great Earthquake of 1906 3/5 of homes burned. 2700 degrees F. Official total of dead 478. Now over 3000 dead. Plate Tectonics, North American and Pacific Plate. Elastic Rebound Theory. Loma Prieta earthquake 15 seconds. 30,000 business damaged and destroyed. Low frequencies: Taller Buildings. Shorter Buildings respond to higher frequencies, 1/3 of unreinforced building in SF and home dwellings. 22 year Quake Pattern. San Andreas Probabilities Prediction. Magnitude 7: 40 billion dollars damage, all brides closed for days or weeks, 45, to 135,000 injured 1500 to 4500 deaths.

Inquiry Examples
Can you:
1. In two or three frames diagram a time-based sequence of the effects of offsets in natural and human features on the landscape of the San Andreas. Show the block movements with arrows and give strike headings.

2. show the with respect to the Moab Valley, what significance might be attributed to the path of the Colorado River not following its valley? Why does this present a geomorphological enigma? Or how does this kind of activity apply itself to the LaGrande Valley.

3. Describe the significance of the relationship between rather small amounts of indigenously generated heat within the earth to that of the total solar output. How does this relationship relate to the geomorphological processes?

4. Consider with the author of the SYSYGY web site that tidal impacts can influence earthquakes and tides can be used to predict quakes. What is SYZYGY and what role does it play in Berkland's prediction theory?