Natural Hazards

Natural Hazards - Risk: (probability of event) x...

Info iconThis preview shows pages 1–10. Sign up to view the full content.

View Full Document Right Arrow Icon
Natural Hazards How living on the Earth is dangerous and what we can do about it
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Natural Hazards Events that cause major loss of life or property damage Examples: volcanoes, hurricanes, tornadoes, floods, earthquakes, swelling soils Approximately 150,000 people die annually from natural hazards.
Background image of page 2
The cost of natural hazards http://pubs.usgs.gov/fs/natural-disasters
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
“Natural” hazards? All natural hazards caused by a response to normal earth activity (weather patterns, tectonic activity, etc.) Human activities can increase severity Population growth Land use
Background image of page 4
Land use and Flooding Fields and forest allow water to infiltrate, decreaseing the chance of floods Pavement increases runoff into streams, creating larger floods
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Natural “hazards” Not all hazards are bad Floods, volcanoes produce nutrient rich soil Periodic forest fires clear underbrush
Background image of page 6
Risk Assessment
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 8
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 10
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Risk: (probability of event) x (consequences) Acceptable risk Depends on society Depends on circumstance Determining Risk History- can provide information about the frequency and magnitude of events Linkages- one event may precipitate another Prediction Where the hazard will occur Determining the probablity Observing precursor events Forecasting the event & telling the public Control of nature Artificial control processes May or may not be effective Is ALWAYS expensive Can increase damage/problems Seawalls- protect property but destroy beach Led to false sense of security Environmental Geology and Natural Hazards Population growth QuickTime and a TIFF (Uncompressed) decompressor are needed to see this picture. http://pubs.usgs.gov/fs/natural-disasters...
View Full Document

This note was uploaded on 04/17/2008 for the course GEO unk taught by Professor J.popo during the Spring '08 term at DePauw.

Page1 / 10

Natural Hazards - Risk: (probability of event) x...

This preview shows document pages 1 - 10. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online