hazards -forms of tropical storms

Question 1

what are the forms of a storm hazard?

Answer 1

.high winds
.storm surges
.coastal/river flooding
.landslides

Question 2

what are the characteristics of high winds as a form of storm hazards?

Answer 2

.av wind speeds often exceed 150km/h and can reach speeds of 250km/h in the eye wall

Question 3

what are the impacts of high winds as a form of storm hazards?

Answer 3

.destroy or damage buildings, roads and bridges.
.bring down power lines leading to electricity cuts and occasionally fires
.agricultural land can also be devastated, and flying debris is a threat to life

Question 4

what percentage of deaths do storm surges account for?

Answer 4

.90%

Question 5

when do storm surges occur?

Answer 5

.ocean heaves upwards as a result of the low atmospheric pressure and combines with wind-driven waves which pile up against the shore

Question 6

what are the impacts of storm surges?

Answer 6

.waves over 5m high devastate coastal communities by destroying buildings and roads
.contaminate agricultural land with salt from the influx of sea water

Question 7

what are the characteristics of coastal/river flooding as a form of storm hazards?

Answer 7

.flash flooding can be caused by
torrential rainfall -200mm in just a few hours particularly in urban areas where surface water can quickly overwhelm the drainage system

Question 8

what are the characteristics of landslides as a form of storm hazards?

Answer 8

. 90% of landslides each year are caused by heavy rainfall -many are triggered by tropical storm

Question 9

what causes the landslides?

Answer 9

.rainwater causes a slope to become saturated which weakens the cohesion of rock and soil particles triggering slope failure