Wednesday, September 16, 2015

Tsunamis
Tsunami's are just larger versions of regular waves, they have a trough and a crest. They consist not of moving water but movement of energy through water. The energy in normal waves comes from the wind, tsunamis are caused by energy originated underwater from a volcanic eruption, a submarine landslide, or an earthquake on the ocean floor. Tsunamis can move hundreds of miles per hour, and builds in height once they reaches shore.



El Salvador is an environment of high stress and and large earthquakes which makes the coast vulnerable to tsunamis.  Between 1859 and 2002, 11 major events have struck El Slavador. Two of these events caused massive destruction and deaths. Five were triggered locally, three regionally, and three by distant earthquakes in the Chilean, Columbian, and Aleutian subduction zones. In El Salvador, earthquakes of magnitudes of 7 or higher, having epicenters offshore, or onshore could trigger tsunamis. Tsunami hazards indicate that the entire Pacific Coast of Central America is at risk for tsunamis. Particularly there are nine communitiesexposed to the risk of tsunamis and they are: La Union, San Rafael de Tasjera, El Zapote, Marcelino, La Libertad, El Majahual, and Acajulta, Barra de Santiago and Garita Palmera.



  • https://www.youtube.com/watch?v=Wx9vPv-T51I
  • http://specialpapers.gsapubs.org/content/375/435.abstract
  • https://books.google.com/books?id=j52TYoUOUjMC&pg=PA266&lpg=PA266&dq=tsunami+el+salvador+hazard&source=bl&ots=OQiK5ytk6P&sig=oik7XtMX62AnRc3b_gN9SxoW-_Q&hl=en&sa=X&ved=0CEMQ6AEwCmoVChMIn5GIusH9xwIVApqICh2hgwFj#v=onepage&q=tsunami%20el%20salvador%20hazard&f=false
  • http://www.nat-hazards-earth-syst-sci.net/13/2927/2013/nhess-13-2927-2013.pdf

1 comment:

  1. L-O-V-E the inundation map you show. Isnt it a great way to showcase where the most dangerous places will be and therfore, where to start evacuating/preparing people?

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