HURRICANES – GCSE Presentation
Download
1 / 28

HURRICANES – GCSE Presentation Climate, Environment and People - PowerPoint PPT Presentation


  • 94 Views
  • Uploaded on

HURRICANES – GCSE Presentation Climate, Environment and People. Miss Parson – Allerton Grange School. Hurricane:

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' HURRICANES – GCSE Presentation Climate, Environment and People' - colt-daniels


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

HURRICANES – GCSE Presentation

Climate, Environment and People

Miss Parson – Allerton Grange School


Hurricane:

Hurricanes are cyclones of tropical origin with wind speeds of at least 118 kilometres per hour. A hurricane is a large, rotating storm, where the winds move around a relatively calm centre called the ‘eye’. These storms are known as ‘typhoons’ in the western Pacific, ‘cyclones’ in the Indian Ocean, and ‘baguios’ in the Philippines. Each storm usually has a life span of several days.


EYE

EYE WALL

RAINBANDS


Fantastic demonstration of how a Cyclone develops !!

http://news.bbc.co.uk/cbbcnews/hi/newsid_4020000/newsid_4022100/4022129.stm

You should now understand the conditions in which a cyclone will form. Use the animation to help you describe how the Hurricane develops


Descending dry air

Centre of storm, calm, clear sky

Torrential rain, thunder, lightning

Clouds form, cumulus and cumulonimbus

Spiralling rain bands

Trade winds

Converging warm moist air


Global Distribution and Regional Names

  • Note down the four areas shown and the regional names, mark them on the map

  • USA hurricanes

  • India / East Coast Africa / Australia Tropical cyclones

  • Asia Typhoons


What’s required for the hurricane to form ?

Hurricanes form over tropical waters (between 8° and 20° latitude) in areas of high humidity, light winds, and warm sea surface temperatures (typically 26.5°C [80°F] or greater). Cyclone "season" in the northern hemisphere runs from June through November.

They occur at a location at least 5°North or South of the Equator. Between the Tropic of Cancer and the Tropic of Capricorn.

There has to be an ocean depth of at least 70m, this moisture provides the Latent Heat released by condensation which drives the system (like the fuel in a car!!)



Hurricane Hazards !!

Often exceeds 150km per hour, have been known to reach over 300 km per hour. Can winds can bring about the collapse of buildings, cause structural damage to roads and bridges, bring down transmission lines and devastate agricultural areas

WIND


Hurricane Hazards !!

Often over 100mm per day, causes severe flooding and landslides. High relief can exaggerate already high rainfall figures and totals in access of 500-700mm per day

HEAVY RAIN


Hurricane Hazards !!

STORM SURGES

Storm surges result form the piling up of wind driven rains and the ocean heaving up under reduced pressure. These can flood low-lying coastal areas. Storm surges cause most of the deaths that result from tropical cyclones


CASE

STUDY –effects on a LEDC

HURRICANE MITCH


Hurricane MitchDate: 27 October 1998, Central AmericaDead: 19,000Homeless: 2.7mDamage: $5.4bn What happened: Hurricane Mitch, one of the most deadly Atlantic storms in history, tore across central America causing flooding and landslides. Nicaragua and Honduras bore the brunt. Development in some countries was set back by decades. Response: Although forecasters had predicted the hurricane, the West only responded after the event. It took a week for large-scale food aid to arrive. Reports from Nicaragua said people were clinging to treetops for days after the rains had stopped. International debt repayments were suspended and the US put together a multi-million dollar aid package. Former President George Bush stressed it was in America’s interest to help in order to prevent a huge tide of economic migrants heading for the US. Verdict: The initial response from the West was slow - major aid from the US did not arrive in Honduras until 8 November. Aid agencies said the effectiveness of aid was undermined by crippling debt repayments. Central American countries admitted environmental degradation had exacerbated the disaster.




Good websites to find out more about Hurricane Mitch economical ?

http://news.bbc.co.uk/1/hi/world/210851.stm

Special reports, eye witness accounts, coping with the damage, the damage, the background

http://www.metoffice.gov.uk/sec2/sec2cyclone/tcbulletins/mitch.html

Fact sheets, images, the costs

http://www.georesources.co.uk/mitchstoryks5.htm

Track the Hurricane, the effects – make sure you go to Alevel section

http://www.hurricaneville.com/mitch.html

Formation, aftermath

http://www.osei.noaa.gov/mitch.html

Special coverage, imagery


Hurricane Katrina economical ?

Case - study



Good websites to find out more about Hurricane Katrina economical ?

http://en.wikipedia.org/wiki/Hurricane_Katrina

Comprehensive coverage of the Hurricane

http://news.bbc.co.uk/1/hi/in_depth/americas/2005/hurricane_katrina/default.stm

Excellent animations, looks at causes, effects and responses

http://www.cnn.com/SPECIALS/2005/katrina/

Summarises impacts, look at the bottom of the page, rebuilding, people, rescue and relief, storm and flood.

http://www.nola.com/hurricane/photos/

Photo images


Management economical ?

  • MEDCs

  • More investment

  • Planning systems

  • Sophisticated warning systems

  • Better defences

  • Comprehensive emergency services

  • Well prepared


Re do diagram slide 5 11
Re do diagram slide 5, 11 economical ?

http:[email protected]/97951579/ - slide 1,3

http:[email protected]/54368363/ - slide 2

http://www.flickr.com/photos/himawan_dari__berokan_bawen/66736551/ - slide 6

http://www.flickr.com/photos/nsaum/2851762532/ - slide 8

http:[email protected]/54368363/ - slide 8

http://www.flickr.com/photos/etiennescattaneunaltra/2219913470/ - slide 9

http://www.flickr.com/photos/fujr/1476169408/ - slide 10

http://www.flickr.com/photos/andrew_clough/96930281/ - slide 12

http://www.flickr.com/photos/brightblightcafe/526853639/in/photostream/ - slide 14

http://www.flickr.com/photos/searchdog/2399340848/in/photostream/ - slide 14

http://www.flickr.com/photos/glo_pix/23034538/ - slide 14

http://www.flickr.com/photos/searchdog/2398524469/ - slide 15

http://www.flickr.com/photos/searchdog/2398530523/in/photostream/ -slide 15

http://www.flickr.com/photos/searchdog/2399348802/in/photostream/ - slide 15

http://www.flickr.com/photos/brightblightcafe/526768620/ - slide 16

http://www.flickr.com/photos/searchdog/2398531039/in/photostream/ - slide 16

http://www.flickr.com/photos/tingmen/39035502/ - slide 18

http://www.flickr.com/photos/nika7k/38300634/ - slide 19

http://www.flickr.com/photos/yerffej9/98388080/ - slide 20

http://www.flickr.com/photos/chuckp/52326674/ - slide 21

http://www.flickr.com/photos/911review/222620863/ - slide 22

http://www.flickr.com/photos/911review/222620864/in/photostream/ - slide 23

http://www.flickr.com/photos/911review/222622312/in/photostream/ - slide 24

http://www.flickr.com/photos/wadegriffith/450699459/ - slide 25

http://www.flickr.com/photos/inkyfingerz/454976773/ - slide 27

http://www.flickr.com/photos/julki/2947057184/ - slide 27

http://www.flickr.com/photos/konaboy/121423722/ - slide 27


ad