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Natural Hazard and Disasters// Three types of Hazards// Atmospheric Hazarfs// Geological Hazards// Biological Hazard// Human-Made Disasters// Waterborne Illness//
Natural Hazard and Disasters
Natural Hazard - naturally occuring event that has the potenstial to harm humans
Natural Disaster - a natural hazard that harms humans and destroys or damages their communities.
Natural Disasters: 2004 Tsunami, Blizzard/ice, Plague, Drought, etc.
Comparing and Analyzing Natural Disasters
- Frequency: how often (frequent or rare)
- Duration: length of time it last (long or short)
- Areal Extent: area affected (wide or concentrated)
- Speed of Onset: speed it happens (slow or fast)
- Temporal Spacing: random or ragular/seasoned
- Size or Magnitude: strength or intensity of event
Classifying Natural Desasters
- Human Impact
--- number of death
--- number of injuries
--- damage to property
Three types of Hazards
Atmospheric Hazards - are connected with weather and climate change. these hazards represent extreme developments of normal weather patterns.
Biological Hazards - infection and parasitic diseases pose a tremendous hazard to millions of people around the world. The greatest tragedy surrounding this is many of these infections and parasitic diseases are both preventable and treatable.
Geological Hazards - these are caused by the geological processes of the Earth, mainly due to the plate tectonics and the natural processes of the Earth.
For Example:
Atmospheric Hazards
Tropical Cyclones: - said to be the most destructive and dangerous od all natural hazards. On average every year about 15000 people are killed.
This have different names depending on region;
Atlantic Ocean - hurricanes
Indian Ocean - typhoons
Pacific Ocean - cyclones
- the after effects of hurricanes can be considered more harmful than the actual hurricane itself.
Tornados: - originate over land and usually occur in middle latitudes; - can have winds up to 500km/h and very in size and strength.
Floods and Flooding: - a number of causes, but most often a result of high precipitation which can be associated with storm fronts (hurricanes). Seasonal flooding is also common.; - areas of southeast Asia are prone to flooding due to their monsoon season.
Drought: - caused by extended periods of a little or no rainfall; - prolonged drought probably causes more deaths and long-term suffering than any other natural disaster.
Geological Hazards
Earthquakes - most violent and sudden of the geological processes. Cause the greatest number of deaths per event; - occur on the margins of plates. Most deaths occur from the collapsing of buildings, but the after math of a earthquake also causes a lot of damage (break of electrical transmission lines, gas and sewage lines, fires, spread of disease.)
volcanoes - cause fewer death than any other natural disasters, although can wipe out entire cities (pompeii in 79AD); - destruction of crops leads to famine; - some areas have learned to live with the presense of volcanoes (Hawaii and Iceland) Iceland uses the volcano's geothermal energy for heating and electrical.
Slides and Avalanches - rapid movement down a slop of soil, rock or both. Also known as rock, bud, land, or debris slides. Show and ice results in an avalanche; - most occur from the combination of geological factors and some form of triggering event.
Tsunamis - Japanese word meaning "habour wave"; - not a tidal wave; - caused geological events, most commonly earthquakes; - height of wave increases as it reaches the shore, have been recorded up to 30m.
Biological Hazard
Classifying Disease Disasters:
Epidemic - a widesoread disease that affexta many individuals in a population and the numver affected is rapidly increasing. ex: spanish flu epidemic (1918-1919) or SARS epidemic (2002-2003)
Pandemic - when an epidemic occurs across the globe. ex: HIV/AIDS
Endemic - diseases that an epidemic occurs at a constant but relatively high rate in the population. ex: Malaria in Liberia, Africa
MDC: infections diseases pose a small risk
LDC/LLDC: infectious diseases cause an extremely high number of deaths because;
1) poor sanitation
2) unsafe drinking water
3) poor access to health care (hospitals, doctors/nurses, medicine, vaccirations)
4) lack of health education
Human-Made Disasters
3 Identifying Characterists;
- effect people in many areas of the world
- effects are lonterm, that is, they remain a threat for many years
- cause permanent damage or serious contamination to important parts of the natural environment.
Waterborne Illness
- Seven people died and more than 2000 were sickened by E. coli contamination of the water system in Walkerton, Ontario in may 2000.
- Contamination of water supplies and of groundwater often causes a boil order to be issued for surrounding area.
- 25000 people die everyday around the world because of water related diseases and illnesses.
- Canada has less a problem of waterborne illness because of;
-- Access to clean groundwater
-- Infrastructure and treatment dacilities to purify water
-- Government regulations on water quality
-- Access to bottled water if necessary
- Wells; use ground water from dug or drilled wells; approximately 46% of Nova Scotia rely on well.
- In LLDCs, water come from;
--- rivers and lakes
--- rain water
--- boreholes and pumps
--- wells
- and water related diseases could be prevented;
--- Boiling, Filtering, Chemicals(chlorine or lodine tablets), Fencing off water source to prevent animal contamination, Water source father from human settlement (to prevent human contamination), Shipment in of bottled water (from organizations like the Red Cross and UNICEFF)
Natural Hazard and Disasters// Three types of Hazards// Atmospheric Hazarfs// Geological Hazards// Biological Hazard// Human-Made Disasters// Waterborne Illness//
Natural Hazard and Disasters
Natural Hazard - naturally occuring event that has the potenstial to harm humans
Natural Disaster - a natural hazard that harms humans and destroys or damages their communities.
Natural Disasters: 2004 Tsunami, Blizzard/ice, Plague, Drought, etc.
Comparing and Analyzing Natural Disasters
- Frequency: how often (frequent or rare)
- Duration: length of time it last (long or short)
- Areal Extent: area affected (wide or concentrated)
- Speed of Onset: speed it happens (slow or fast)
- Temporal Spacing: random or ragular/seasoned
- Size or Magnitude: strength or intensity of event
Classifying Natural Desasters
- Human Impact
--- number of death
--- number of injuries
--- damage to property
Three types of Hazards
Atmospheric Hazards - are connected with weather and climate change. these hazards represent extreme developments of normal weather patterns.
Biological Hazards - infection and parasitic diseases pose a tremendous hazard to millions of people around the world. The greatest tragedy surrounding this is many of these infections and parasitic diseases are both preventable and treatable.
Geological Hazards - these are caused by the geological processes of the Earth, mainly due to the plate tectonics and the natural processes of the Earth.
For Example:
| Atmospheric Hazards | Biological Hazards | Geological Hazards |
| Tornado, Hurricane, Blizzard/ice, Flood, Forrest Fire, Drought, Heat/Cold Wave | Plague, AIDS/HIV, West Nile, SARS, Insect hazard | 2004 Tsunami, Avalanche, Earthquake, Valcano/Geyser, Rock Sliders/Mug |
Atmospheric Hazards
Tropical Cyclones: - said to be the most destructive and dangerous od all natural hazards. On average every year about 15000 people are killed.
This have different names depending on region;
Atlantic Ocean - hurricanes
Indian Ocean - typhoons
Pacific Ocean - cyclones
- the after effects of hurricanes can be considered more harmful than the actual hurricane itself.
Tornados: - originate over land and usually occur in middle latitudes; - can have winds up to 500km/h and very in size and strength.
Floods and Flooding: - a number of causes, but most often a result of high precipitation which can be associated with storm fronts (hurricanes). Seasonal flooding is also common.; - areas of southeast Asia are prone to flooding due to their monsoon season.
Drought: - caused by extended periods of a little or no rainfall; - prolonged drought probably causes more deaths and long-term suffering than any other natural disaster.
Geological Hazards
Earthquakes - most violent and sudden of the geological processes. Cause the greatest number of deaths per event; - occur on the margins of plates. Most deaths occur from the collapsing of buildings, but the after math of a earthquake also causes a lot of damage (break of electrical transmission lines, gas and sewage lines, fires, spread of disease.)
volcanoes - cause fewer death than any other natural disasters, although can wipe out entire cities (pompeii in 79AD); - destruction of crops leads to famine; - some areas have learned to live with the presense of volcanoes (Hawaii and Iceland) Iceland uses the volcano's geothermal energy for heating and electrical.
Slides and Avalanches - rapid movement down a slop of soil, rock or both. Also known as rock, bud, land, or debris slides. Show and ice results in an avalanche; - most occur from the combination of geological factors and some form of triggering event.
Tsunamis - Japanese word meaning "habour wave"; - not a tidal wave; - caused geological events, most commonly earthquakes; - height of wave increases as it reaches the shore, have been recorded up to 30m.
Biological Hazard
Classifying Disease Disasters:
Epidemic - a widesoread disease that affexta many individuals in a population and the numver affected is rapidly increasing. ex: spanish flu epidemic (1918-1919) or SARS epidemic (2002-2003)
Pandemic - when an epidemic occurs across the globe. ex: HIV/AIDS
Endemic - diseases that an epidemic occurs at a constant but relatively high rate in the population. ex: Malaria in Liberia, Africa
MDC: infections diseases pose a small risk
LDC/LLDC: infectious diseases cause an extremely high number of deaths because;
1) poor sanitation
2) unsafe drinking water
3) poor access to health care (hospitals, doctors/nurses, medicine, vaccirations)
4) lack of health education
Human-Made Disasters
3 Identifying Characterists;
- effect people in many areas of the world
- effects are lonterm, that is, they remain a threat for many years
- cause permanent damage or serious contamination to important parts of the natural environment.
Waterborne Illness
- Seven people died and more than 2000 were sickened by E. coli contamination of the water system in Walkerton, Ontario in may 2000.
- Contamination of water supplies and of groundwater often causes a boil order to be issued for surrounding area.
- 25000 people die everyday around the world because of water related diseases and illnesses.
- Canada has less a problem of waterborne illness because of;
-- Access to clean groundwater
-- Infrastructure and treatment dacilities to purify water
-- Government regulations on water quality
-- Access to bottled water if necessary
- Wells; use ground water from dug or drilled wells; approximately 46% of Nova Scotia rely on well.
- In LLDCs, water come from;
--- rivers and lakes
--- rain water
--- boreholes and pumps
--- wells
- and water related diseases could be prevented;
--- Boiling, Filtering, Chemicals(chlorine or lodine tablets), Fencing off water source to prevent animal contamination, Water source father from human settlement (to prevent human contamination), Shipment in of bottled water (from organizations like the Red Cross and UNICEFF)
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