This preview shows page 1. Sign up to view the full content.
Unformatted text preview: er Scale) (not exclusive..) 14 - maps according to intensity
- map can tell you where epicentre is (in general, amount of shaking) Earthquake
Intensity - historical records, map out potential earthquake areas Did you
feel it? http://earthquake.usgs.gov/eqcenter/dyfi.php 15 5 - can see where plate boundaries are Earthquake belts WHERE??? - convergent, divergent (less at) boundaries Distribution of magnitude 5 or
greater earthquakes, 1980 - 1990 16 - energy released IN the earth Locating the source of earthquakes
and earthquake depths - cold war = excelerated something… nuclear vibrations/blasts - the nuc. vibs/signatures are diff Magnitude
Deep: 6.9 17 Earthquakes and
Effects of Earthquakes
Risk and Prediction
Mitigating effects 18 6 - release of energy (taking twig, start bending it, before snaps...
…hear splinter, splinter…SNAP… splinter, splinter Earthquake cycle - main break, then needs to get settled after/foreshock or aftershock Foreshocks and aftershocks
Foreshocks: shocks which often precede a major
earthquake by days or, in some cases, by as much as
several years - ppl already in shock, in stress… then another one after (not reliable that large quake is going to happen) Aftershocks: shocks following major earthquakes can be more devastated (sometimes more dev...
View Full Document
This document was uploaded on 02/25/2014.
- Fall '14