http://www.getprepared.gc.ca/cnt/hzd/vlchs-en.aspx

http://geography.about.com/od/physicalgeography/a/avalanches.htm

http://www.conserve-energy-future.com/types-causes-effects-of-avalanches.php

http://nctr.pmel.noaa.gov/faq_display.php?kw=15%20March%202005%20Interview%20with%20Dr.%20Hal%20Mofjeld

http://www.earthobservatory.sg/faq-on-earth-sciences/where-tsunami-most-likely-happen

http://avalanche.state.co.us/accidents/statistics-and-reporting/

http://geology.com/world/world-map.shtml

http://www.workbook.com/view/illustration/steve_stankiewicz/gallery/chartsinfographics/image/435156

http://geology.com/articles/lightning-map.shtml

http://www.getprepared.gc.ca/cnt/hzd/vlchs-en.aspx

http://geography.about.com/od/physicalgeography/a/avalanches.htm

http://www.conserve-energy-future.com/types-causes-effects-of-avalanches.php

http://nctr.pmel.noaa.gov/faq_display.php?kw=15%20March%202005%20Interview%20with%20Dr.%20Hal%20Mofjeld

http://www.earthobservatory.sg/faq-on-earth-sciences/where-tsunami-most-likely-happen

http://avalanche.state.co.us/accidents/statistics-and-reporting/

http://geology.com/world/world-map.shtml

http://www.workbook.com/view/illustration/steve_stankiewicz/gallery/chartsinfographics/image/435156

http://geology.com/articles/lightning-map.shtml