6.3 Natural Disasters Environmental Management

Front

Tropical cyclones

Back

Intense circular storms that originate over warm tropical oceans.

-Hurricane Katrina, Tropical Cyclone Kidaya, Cyclone Asani

Front

Saffir-Simpson

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A scale used to measure the intensity of hurricanes.

Front

Wind Shear

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A difference in wind speed or direction over a short distance.

Front

Cumulonimbus Clouds

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Tall, dense clouds associated with thunderstorms and heavy rainfall.

Front

Storm Hydrograph

Back

A graph showing the rate of flow versus time past a specific point in a river after a storm.

Front

Water Discharge

Back

The volume of water flowing through a river channel.

Front

Rainfall Lag Time

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The time between peak rainfall and peak discharge in a river.

Front

Infiltration Capacity

Back

The maximum rate at which soil can absorb rainfall.

Front

Impermeable

Back

Surfaces or materials that do not allow water to pass through.

Front

Antecedent Soil Moisture

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The moisture present in the soil before a rainfall event.