GEOL 213 Lecture Notes - Lecture 14: 2004 Indian Ocean Earthquake And Tsunami, Tsunami Warning System, Subduction

7 views1 pages

Document Summary

Seismic shaking can trigger slope movement in susceptible regions. In some cases the resulting landslides do more damage than the seismic shaking. 1970 huascaran landslide was triggered by m=7. 7 earthquake ~130 km away. It buried town of yungay and killed ~18,000. Heavy rain triggers more landslides than earthquakes. Range of area at single magnitude depends upon landslide susceptibility. The hill regions of se bangladesh are susceptible to landslides. Water-saturated sediments consisting of well-sorted and rounded sand grains are prone to liquefaction. Basically, sediment temporarily turns into quicksand, and buildings can lose their support. As with landslides, earthquakes in nearby countries can trigger liquefaction in bangladesh. Lateral spreading (a type of liquefaction) commonly occurs in loosely compacted artificial fill in near shore regions. Port facilities built on artificial fill are very prone to lateral spreading. Levees and riverbanks are also prone to lateral spreading. Earthquake surface rupture can cause damage if it runs beneath roads, buildings or pipelines.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related Documents