Natural Hazards Mindmap Geography A Level
- Created by: Tamikazie
- Created on: 02-10-19 11:52
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- Natural Hazards
- Hydrological
- Avalanches
- Avalanche describes a quantity of snow or ice that slides down a mountainside under the force of gravity.
- It occurs if the load on the upper snow layers exceeds the bonding forces of the entire mass of snow.
- It often gathers material that is underneath the snowpack like soil, rock etc (debris avalanche).
- It occurs if the load on the upper snow layers exceeds the bonding forces of the entire mass of snow.
- Avalanche describes a quantity of snow or ice that slides down a mountainside under the force of gravity.
- Floods
- General floods can be predicted in advance, except in the case of flash floods. .
- The impact of flooding can include destruction of housing, crops, cattle and people.
- Floods pose specific challenges for emergency response as sometimes vast areas of land are covered with water, making coordination very difficult.
- Flash floods
- Flash floods are sudden and extreme volume of water that flow rapidly and cause inundation.
- Because of its rapid nature flash floods are difficult to forecast and give people little time to escape or to take food and other essentials with them.
- Flash floods are sudden and extreme volume of water that flow rapidly and cause inundation.
- Flash floods
- Floods pose specific challenges for emergency response as sometimes vast areas of land are covered with water, making coordination very difficult.
- Flash floods
- Flash floods are sudden and extreme volume of water that flow rapidly and cause inundation.
- Because of its rapid nature flash floods are difficult to forecast and give people little time to escape or to take food and other essentials with them.
- Flash floods are sudden and extreme volume of water that flow rapidly and cause inundation.
- The impact of flooding can include destruction of housing, crops, cattle and people.
- General floods can be predicted in advance, except in the case of flash floods. .
- Avalanches
- Geological
- Earthquakes
- The three Tectonic plates boundaries are: Destructive, Constructive and Conservative
- Volcanic Eruptions
- Warning period may vary. Little or no warning may be available if the cause is earthquake.
- However, some general warning may be assumed in the case of landslides arising from continuous heavy rain.
- Minor initial landslips may give warning that heavy landslides are to followed
- However, some general warning may be assumed in the case of landslides arising from continuous heavy rain.
- The three Tectonic plates boundaries are: Destructive, Constructive and Conservative
- Tsunamis
- Landslides
- A landslide is the movement of soil or rock controlled by gravity.
- Rockfall is rock or stone falling freely from a cliff face. It is caused by undercutting, weathering or permafrost degradation.
- The movement of rock usually ranges between slow and rapid.
- Warning period may vary. Little or no warning may be available if the cause is earthquake.
- However, some general warning may be assumed in the case of landslides arising from continuous heavy rain.
- Minor initial landslips may give warning that heavy landslides are to followed
- However, some general warning may be assumed in the case of landslides arising from continuous heavy rain.
- A landslide is the movement of soil or rock controlled by gravity.
- Volcanic Eruptions
- Subsistence
- Subsidence is the motion of the Earth's surface as it shifts downward relative to the sea level.
- Subsidence is the motion of the Earth's surface as it shifts downward relative to the sea level.
- Earthquakes
- Atmospheric
- Tropical Storms
- Tropical Storms are large scale closed circulation system in the atmosphere
- They combines low pressure and strong winds that rotate counter clockwise in the northern hemisphere and clockwise in the southern hemisphere.
- Tropical Storms are large scale closed circulation system in the atmosphere
- Storms
- These storm types may include:
- Snow Storms, Thunderstorms, Hail-storms, Tornadoes, Sand storms and storm surges
- During strong storms, storm surges may occur
- Tropical Storms are large scale closed circulation system in the atmosphere
- They combines low pressure and strong winds that rotate counter clockwise in the northern hemisphere and clockwise in the southern hemisphere.
- A storm surge is the rise of the water level in the sea, an estuary or lake as result of strong wind driving the seawater towards the coast.
- Tropical Storms are large scale closed circulation system in the atmosphere
- These storm types may include:
- Extreme Temperatures
- Can cause Wildfires and Drought.
- Heatwaves and cold waves
- A heat wave is a prolonged period of excessively hot and sometimes humid weather relative to normal climate patterns of a certain region.
- A cold wave can be both a prolonged period of excessively cold weather and the sudden invasion of very cold air over a large area.
- Tropical Storms
- Biological
- Diseases Epidemic
- An epidemic is then unusual increase in the number of cases of an infectious disease which already exists in a certain region or population.
- It can also refer to the appearance of a significant number of cases of an infectious disease in a region or population that is usually free from that disease.
- An epidemic is then unusual increase in the number of cases of an infectious disease which already exists in a certain region or population.
- Insect/Animal Plagues
- Pervasive influx and development of insects or parasites affecting humans, animals, crops and materials.
- Epidemics and insect/animal plagues may be the consequence of disasters of another kind, such as tropical storms, floods, earthquakes, droughts, etc.
- Pervasive influx and development of insects or parasites affecting humans, animals, crops and materials.
- Diseases Epidemic
- Hydrological
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