16023500
Description
Mind Map by matthew midlane, updated more than 1 year ago
|
Created by matthew midlane
about 7 years ago
|
|
Physical causes of flooding
- Relief
- Shape and height of the
land
- A steeper cliff gradient leads to a shorter lag time
- This creates more water in an area at the same time
- This means that there is more water in one aera
- This means that there is more water in one aera
- This creates more water in an area at the same time
- A steeper cliff gradient leads to a shorter lag time
- Shape and height of the
land
- Temperature
- Colder temperatures can prevent evaporation
- Therefore prevents the water table lowering
- Leaves the ground more saturated
- Leaves the ground more saturated
- Therefore prevents the water table lowering
- Colder temperatures can prevent evaporation
- Previous weather condiions
- High rainfall or long periods of rainfall
- Leads to higher infiltration
- Leads to a higher water table
- Leads to a higher water table
- Leads to higher infiltration
- Cooler
- Less evaporation
- Less surface water is removed
- Less transprecipitation
- Water table slowly or doesn't get lower
- Water table slowly or doesn't get lower
- Less transprecipitation
- Less surface water is removed
- Less evaporation
- Anti Sedent
- High rainfall or long periods of rainfall
- Snowmelt
- Particularly impactful in higher areas
- Melting snow regularly causes extensive flooding in areas
- The quick transition between seasons causes rapid snow melting whilst lower areas remain colder
- Little infiltration down stream
- Flooding can be exacerbated by other factors
- Earthquake induced dam failure
- Landslides
- Volcanic - Can melt icecaps
- Volcanic - Can melt icecaps
- Landslides
- Earthquake induced dam failure
- Flooding can be exacerbated by other factors
- Little infiltration down stream
- The quick transition between seasons causes rapid snow melting whilst lower areas remain colder
- Melting snow regularly causes extensive flooding in areas
- Particularly impactful in higher areas
- Rock type
- Permeable rock allows greater infiltration and ground storage
- This allows less surface water
- Does little to the water table however
- Does little to the water table however
- This allows less surface water
- Impermeable rock causes greater standing water
- More likely flooding as it is harder for water to get into the ground
- More likely flooding as it is harder for water to get into the ground
- Permeable rock allows greater infiltration and ground storage
- Amount and type of rain
- Heavy rain is usually a precursor
- As a result of low pressure
- This leads to increased saturation of the ground
- This increases the water table
- This increases the water table
- This leads to increased saturation of the ground
- As a result of low pressure
- Monsoon rainfall
- Heavy periods of rainfall
- 70% of annual rainfall comes within 100 days
- Large rivers in areas affected are most at risk
- Large rivers in areas affected are most at risk
- 70% of annual rainfall comes within 100 days
- Tropical cyclones
- Brings high levels of rain in a short period of time
- Less evaporation as well
- Higher water table
- Higher water table
- Less evaporation as well
- Brings high levels of rain in a short period of time
- Heavy periods of rainfall
- Heavy rain is usually a precursor
Want to create your own Mind Maps for free with GoConqr? Learn more.