1. Tolley’s handbook of disaster and emergency management: pronciples and best practices; disaster and emergency management systems;Kaplan,2004
2. Scale R.. Mercalli scale. https://www.usgs.gov/media/images/modified-mercalli-intensity-mmi-scale-assigns-intensities.
3. Beaufort. Wind scale. https://www.spc.noaa.gov/faq/tornado/beaufort.html.
4. Saffir-Simpson. Hurricane wind scale. https://www.nhc.noaa.gov/aboutsshws.php.
5. Tornado F.. Damage scale. https://www.spc.noaa.gov/faq/tornado/f-scale.html.