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Natural Disasters

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Title: Natural Disasters Author: McGraw-Hill Higher Education Last modified by: McGraw-Hill Higher Education Created Date: 3/30/2001 2:33:32 PM Document presentation ... – PowerPoint PPT presentation

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Title: Natural Disasters


1
Natural Disasters
  • By Patrick L. Abbott

2
Chapter 11
  • Hurricanes and the Coastline

3
Overview
  • Hurricanes
  • How a Hurricane Works
  • Hurricane Origins
  • North Atlantic Ocean Hurricanes
  • Cyclones and Bangladesh
  • Coastline

4
Overview (cont.)
  • Waves in Water
  • Waves on the Coastline
  • Human Effects on the Coast

5
Hurricanes
  • Hurricane
  • Tropical Cyclone
  • Andrew, August 1992
  • Tropical storm

6
How a Hurricane Works
  • Tropical Disturbance
  • Tropical Depression
  • Hurricane Energy Release
  • The Eye

7
Hurricane Origins
  • Atlantic
  • Indian Ocean
  • Cyclones
  • Western Pacific Ocean
  • Typhoons

8
North Atlantic Ocean Hurricanes
  • Cape Verde-type Hurricanes
  • Tropical Waves
  • Hurricane Paths
  • North Atlantic Oscillation (NAO)
  • Caribbean Sea and Gulf of Mexico-type Hurricanes
  • Intertropical Convergence Zone (ITCZ)
  • Mitch, October 1998

9
North Atlantic Ocean Hurricanes (cont.)
  • Forecasting the Hurricane Season
  • Hurricane Damages
  • Storm Surges
  • Heavy Rains
  • Nelson County, Virginia, 1969, Mudflows and
    Debris Avalanches
  • Hurricanes and the Atlantic Coastline
  • Galveston, Texas, September 1900

10
North Atlantic Ocean Hurricanes (cont.)
  • Gulf of Mexico Coast Example Texas
  • Hurricanes and the Atlantic Coastline
  • Hugo, September 1989
  • The Evacuation Dilemma
  • Global Rise in Sea Level
  • Hurricanes and the Pacific Coastline
  • Pauline, October 1997
  • Iniki, September 1992

11
Cyclones and Bangladesh
  • Most Deadly Cyclones
  • Submerged in Water
  • Coastline
  • 12-13 November 1970
  • Population Increase

12
Coastline
  • Damage by Waves
  • Building Communities and Cities
  • Losing Beach Sand

13
Waves in Water
  • Wavelength
  • Fetch
  • Rogue Waves
  • Swell

14
Waves on the Coastline
  • Why a Wave Breaks
  • Summer Versus Winter Beaches
  • Beach Sand as Coastal Protection
  • Wave Refraction
  • Longshore Drift
  • Longshore Current
  • Submarine Canyons
  • Turbidity Currents

15
Human Effects on the Coast
  • Dams
  • Cliff Protection
  • Groins
  • Rip Currents
  • Jetties
  • Jetties for Mission Bay, San Diego, California
  • Breakwaters
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