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2004 53 -
 
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â째 ȡǢ š (.2003) !

. þ, B.E. (Hons), P.Eng (Nuclear), ɼ 

, !.... 
򾢨 񧼡!.... 
, 츢 ̧?
Ȣ Ȣ, ţɧ!
þ¡ [, , ]


ɢ š ȡǢ!

Halifax Hurricaneš ɢ ȡǢ š , ̾, Ҹ ȡ 츢 ո.  è è 5 ʸâ [Latitude] ż츢, ȡǢǢ .  츢ġ [Cyclone] â, [Hurricane, Typhoon] ȡǢ š Ȣ .  73 , 츢ġ ȡšǢ!  39 Ӿ 72 Ũ ţ ɢ [Tropical Storms] .  ȡǢ 30 Ӿ 100 Ũ šġ Ȣθ!  Ȣ çǢ, Ƣ ã [Carribean] ġ øǢ, Ģ ̾Ǣ ո. 򨾧¡ ɢǧ¡ [Snow] 츢 , ڼ 츢ġ š è Ũ [Equtarial Belt] ż츢ġ, ġ !  ȡǢ [Anticyclones] , Ƣ ¡ ݨ Ҹ [Lighter Winds without the Precipitation].  ȡǢ ƢǢ Ȣ Ţ 600 ̨ġ!  ȡǢǢ Ţ 1800 Ӿ, 2400 Ũ ܼ Ţâġ!  

"츢ġ" Ȣ è ż츢, 10-15 ʸâ θǢ [Latitudes] .  ã, ġ Ǣ ȡǢ "â" ɡ Ģ š ȡǢ "" ɢ Ȣ θ.  Ȣ Ÿ 65 Ӿ 110 (Ţɡ 30 Ӿ 50 ) Ũ ġ! ﺢ ɡ 135 (Ţɡ 60 ) ܼ ġ! 

âǢ Ĩ, Ģ Ÿ, θ 쨸 ̾¢ θ.  쨸¢ Ӿġ ȡǢ Ȣ¾, ÿ ȡǢ ġ Ģ¾ վ!  Ģ 츢 ɡ ̾ ȡǢ¡ վθ. 1992 ż â측 츢 š ȡǢ [Hurricane Andrew] ̾ ! 

ɼ Ģ셢 š ȡǢ

Halifax Hurricane2003 29 , ɼŢ ШӸ վ Ģ쨅 츢 Ƣ, ŢŢ â š, š¡Ţ ġȢ ȡ ȡǢ¡ Ȣθ!  Ÿ, Ţ ̾ Ĩ ȡ, š¡, â [Prince Edward Island (PEI)] Ǣ ȡǢ , ɡ 300,000 쾢 ¢Ȣ, Ţ̸ Ȣ, ġ !  á , ţġ, âġ, Ţ Ţ츢ġ, ȢŢ Ģ ġ ¢ 측 ž Ȩ!  ¡Ţ, § ̸ ŢŢ!  

Ģ 츢 â, Ţ Ǣ š ̸ , ɢ ¢!  ý â, , Ţи ,  !  Ģ â Ȣ, ţθ ţ ¢!  Ţ  
ţθ ;  , š Ţ Ӽ¢!  ţθǢ , ܨø Ȣ , ƿ ¢!  š ȡǢ Ǣ ŢŢ 500 Ģ θ.  

š ȡǢ Ţ: 20-24 (35-40 .) θ!  ź [Eyewall] Ÿ Ģ [Radius] Ģ 18 ! Ÿ: 95 . Ȣ Ÿ: 110 !  š 973 mb (milli bar) !  Ģ 츢 Ȣ áâ Ÿ 90 , Ÿ 105 š .  Ÿ ȡǢ ţ [Hurricane East Wing] Ģ ШӸ ½ 󾾡, ̾Ǣ ׸ . 

PE , šɢ Ÿ 57 ġ . Ģ Ÿ 84 ġ ̨.  ƢŢ : 25-40 .. Ģ է 7 , ĸ 30 Ţ¾ Ȣ θ.  ýǡ, ȡǢ š ƨ ƢŢ!  Ӿġ ý ȡǢ (35-40) mph Ÿ Ţš .  ġ Ȣ .  ý š ȡǢ¢ ̾ Ȣ ¡ Ȣ .  Ģ š 󾾡, ɡ ʧ է츢 ȡǢ 츢 ¢ Ǣ!  š¡, P.E. ! 

þ ȡǢ Ƣ׸!

þ ̾ ȡǢǡ Ƣ׸ 񼡸 ŢǢ, ġڸǢ θ!  Ƹ ȡ ȡ [..1223 ?] ؾ Ţ 񽸢, , Ţ š Ţâ Ҹ, Ţ𼾡 ɡ ȢŢ츢ȡ!  ȡθ Ģ Ҹ, տ Ƹ Ҩ ҽ Ƣ š Ψ ââ !  Ӿ ȡ Ŋފ â 츢 Ģ , Ģ Ţ !  Ҹ Ƹ ո ġ .   
   
âʉ ¡Ţ ¢ ȡǢ¢ ý š ! 1737 짼 7 Ţ 츢ġ ȡǢ¢ 40 ĸ 300,000 ɾ Ȣθ!  Ũ̼Ţ 1789 â [Coringa] ȡǢ 츢 ĸ 20,000 ɡ!  츢 1839 ȡǢ¢ 300,000 , Ţ 1864 ȡǢ¢ 70,000 , ɡ ̾¢ 𼸡 ո ţ 1876 ȡǢ¢ 100,000 ɡ!  100,000 á Ţ ¢ .  1942 ȡǢ¢ 40,000 .

; ¡Ţ Ũ 츢 ȡǢ .  Ȣ â, ç ̾Ǣ !  1994 짼â, 1995 â 츢ġǢ ̾Ǣ .  1996 á â è 츢 츢ġɢ 100 Ÿ !  Ţš 1675 ý !  ġ¢ ţ! 5400 ̸ !  1998 ̃á ȡǢ¢ 900 񼾡, 1800 Ⱦ Ȣθ. 

1999 짼 29 â 츢ġɢ 190 Ÿ ţ!  ĸ 15 , 85 ̾¢ ŢŢ!  ţ, Ǣܼ, ɸ, , , ǡ ¡ ! 10,000 ¢â! 2.5 Ģ ţ!  400,000 ¢â !  Ţ: 3.5 Ģ U.S. á!  

ɢ ȡǢ š ɸ

ɢ ȡǢ [Tropical Cyclones] š Ĩ ž ɸ ȧ :

1.  26.5 ʸâ C, ݼ ź.  Ţ 츼 , ¡ Ţ [Water Vapour] ¡ Ǣ , " " Ǣ¡ [Release of "Latent Heat" of Condensation] š . 

2. ¢  Ÿ è¢ [ 1000 ], Ǣ ⃢ θ.  ȡǢ , Ӹ è 5 ʸâ ġ ҸǢ š .  çǢ ̨ "Ţ Ţ" [Coriolis Force] ¡ .  è Ÿ, 5 ʸâ è¢ Ȣ Ţ Ÿ Ţ¡, ɢ Ǣ Չ 츢!

3. Ӹ , ȡ [Absence of Wind Shear with Height]!  󿢨¢ Ӹ ĢȢ Ģ, [Troposphere] 򾡸 ʸ.

4. Ţ쨸 Ţ Ţâš ¡ [Upper Level Divergence greater than Lower Level Convergence].  Ţ Ţâš Ǣ , Ǣ , Ţš Ÿ . 

5. ɧ Ǣ [Pre-existing Low-level Disturbance].

ɢ ȡǢǢ 쾢!

è, è ɢ Ǣ [Seas between Tropics of Capricorn & Cancer] 75 (mph) Ÿ ţ â ȡǢ š.  çǢ, ҸǢ ¢, ¢, 𧺾 Ţ , ¢ Ţ¡Ǣ !  è Ÿ, 5 ʸâ è¢ Ȣ Ţ Ÿ Ţ¡, ɢ Ǣ Չ 츢!

ż [Northern Hemisphere] ȡǢ 츢 , ʸ ȡ [Anti-clockwise] [Southern Hemisphere] ȡǢ 츢 ʸ ȡ [Clockwise] Ȣ ̸ !  ȡǢ¢ [Eye of the Storm] Ģ ׸!  ׸!  áâ Ȣ Ţθ!  ɡ Ȣ Ÿ, [Humidity], Ƣ [Rainfall] ¨ 츢 ¡!  ¡ ׼ ȢŢ!  츢  [Downdraft] , 8-10 ʸâ C ȡǢ¢ Ţ !  

ȡǢ ǢҸ 츢 è¢Ģ , ο è θ [Low to Middle Lattitudes] Ǣ Ţ š 츢 츢.  Ӿ ȡǢ 3.5 Ģ Ǣ Ţ [ è ̾¢ 8-10 , ç 5-6 (Troposphere)] θ.  â Ȣ , 쾢 [, ] 측 츢 Ĩ ! 

è ż츢, 300 ҸǢ â ž!  â ȡǢ Ȩ "Ţ Ţ" [Coriolis Force] è¢ , ⃢!  ž, Ţ Ţ Ӹ !  ż ̾¢ [Northern Hemisphere] Ţ Ţ !  ȡǢ š 26.5 ʸâ ġ Ţ ź§, Ţ 30,000 Ũ [9000 ] ţ Ȣ 츢, Ÿ Ţ !  á [Merry-go-round] ¢Ģ Ţ, !  ȡǢ ¨ Ţ Ţ ż ¢ [Northern Hemisphere] ȧ, ¢ [Southern Hemisphere] ȧ Ҹ.

:

1. Hurricanes & Typhoons, Cyclones & Anticyclones, Winds & Storms, The New Encyclopaedia of Britannica Vol:5 & 9 [1978].

2. BBC News South Asia India Cyclone [June 12, 1998
]
3. Case Studies: On the Southern Coast of India www.fao.org/FOCUS/E/disaster/casestud/CSindia.htm 

4. Canadian Hurricane Centre, Hurricane Juna 2003 [Oct 29, 2003]
.
5. Canadian Broadcasting Corp -Recovering from Hurricane Juan
   
jayabar@bmts.com

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