Storm Flashcards

1
Q

Condistions needed for tropcial storm/cyclone to form?

A

1 - Temp 26-27 and 50 m deep
2 - Rekatuvly strong winds so swirling motion woll form byt stsme won’t be ripped apart
3 - Congernce zone of lowa dn high air pressure so less dnese ir rises more readily and clouds can form
4 - Rotation: only froma round equator as no corlilos at eqautor no less 5 from each side
5 - A trigger e.g high ocena temp, area low [ressure

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2
Q

What is a tropical strom?

A

= large spinning storms withs rng winds and teerntail rain

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3
Q

Path tropcial storms?

A

1 - Move W due to E winds tropics + move away fro euator due to crlios effect
2 - Lose strntgh as yhey move over land as suppy warm moist air stopped

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4
Q

Features tropical storms

A

1 - Ciruclar - spin naticloskiswe NH clockwse SH
2 - last 1-2 weeks
3 - centre strom - eye - low pressure system
4 - ririnsg air spirals in eye cause strong winds
5 - outflow high mositrue air from eye - tehrefore clouds either side eye

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5
Q

In what locations do tropical storms occur? (4)

A

Eastern Asia - 33%

East Pacific - 17%

West Austrailia - 13%

Caribbean - 11%

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6
Q

Forms of strom hazards?

A

1 - High winds - destory builidnsg, uproot trees, carryu debris
2 - Strom surges - large rise sea level cause by high winds pushing water towards the coast
3 - Heavy rain - warm moist air cools and condesnes
4 - Flooding -
5 - Landslides - water indilirtaes soil ,less stable , – landlsides

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7
Q

How can infastructure be developed to withstand a tropical storm? (3)

A

1 - Using reinforced concrete

2 - Securly fixing roofs

3 - Building infrastructure on stilts

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8
Q

Risk management to reduce impacts storm hazards?

A

ST

LT 
Prevention:
- can't be prevented 
- path can be predicted  
Prrepardness: 
- train emergcy servuces 
- Gov plane evac routes 
- Education
Adaptration: 
- reifncred concrete 
- fiixng roofs securly 
buildisng stilts
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9
Q

Mage, freq, pred, reg

A

Pred:
Satellite imgayr identiy certain cloud formatiomns - tell when S forming
storm can then be tracked using sat - therefoe path troocal strom pred fairly accuratly

Mag:

  • Saffir siampson scale
  • measures windspeed
  • 1-5 (strongest)
  • estaimtes damage 1-5

Freq
- more freq NH - June - Nov + SH N - A
global wamring - increasing freq

Ireegualr as many factors that dertmine where riepical srom will form and hit

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10
Q

Decsirbe formation tropical strom?

A

1 - Warm moist air rises, creating low pressure system causing warm surrudning air to move into system and rise
2 - warm air rise, colls condesnes clouds dew point
3 - System spinning due to CE - AC NH C SH
4 - addition E warm arir –> storm spin fasetr and increased wind speed - 40mph = TS
5 - Cool dry air descneds on the eye –> calm waether
6 - Eeywall syrounds eye = moset pwerful area strom - warm moist air rapdily rises - very hifh WS + rain – 75 mph = cyclone
7 - Storm reaches the coast + large vol water takne inot system and rleeased as a a highwave (strorm suge)
8 - Once at land no longer supply warm moista ir therfere eye collapse

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