ATM 200 - Natural Disasters

Ch 5 – EQs Throughout the

United States and Canada

Wednesday, 14 October 2015

Daily Announcements:

1) EQ Homework Assignment to be completed by 9:20 AM, Friday, Oct. 16.

2) You can visit your TA or me during our posted Office Hours to go over your

Exam #1 up until the date of Exam #2. If you did not mark your answers directly

on your exam paper, then you must come see me.

Song #1: “The California Earthquake Song” by Danney Ball

Song #2: “Theme from New York, New York” by Frank Sinatra

Text Source Today: Chapter 5

· Thrust Faults and Blind Thrust Faults Notes Template

· Northridge, CA, 1994 and “The Big One” PDF DOC

· Los Angeles: “The Big One”

· Intraplate EQs: “Stable” Central U.S. – New Madrid

· Intraplate EQs: Eastern U.S. & Canada

· Hawaii EQs

· Human-Triggered EQs

Study Guide Material (Stacey’s Guide) :

1) What are “thrust faults” and “blind thrusts”?

2) What caused the widespread failure of structures in the 1994 Northridge EQ?

3) Know the scenario for “The Big One” that everyone expects for Los Angeles.

4) What criteria does the USGS define as a “significant EQ?”

5) Which U.S. state is the most active EQ state? Least active EQ state?

6) Why would a “New Madrid EQ” today be more devastating than 1811-1812?

7) What are the likely sources of “intraplate” EQs?

8) What tectonic feature(s) is/are most likely reactivating these old faults?

9) Why is a large EQ more destructive in the eastern U.S. than a similar one out west?

10)What may have “triggered” the deadly 2008 Sichuan EQ and why?