STORM SURGE MODELING.pptx

7/23/2019 STORM SURGE MODELING.pptx

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STORM SURGE MODELING

Md. Mohiuddin Sakib


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Objective of Storm Sur e Mode!in

To "rovide#Inundation Ima e$o!der Overto""in Ma"


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Model Domain

Bay ofBengal


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GridGrid Properti

Maximum OrthogonalityMaximum Grid Resoluti1408 m

Minimum Grid ResolutiomM smoothness = 1N smoothness = 1Maximum M sizeMinimum M size =Maximum N size

Minimum N size =Maximum Aspect Ratio


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Bathym

Figure : Bathymetry with polder in the study region


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Boundary Condition

Ganges : Di !"a#ge

$a$ion a$ %a#dingeB#idgeBrahmaputra : Di !"a#ge

$a$ion a$ Ba"adu#a&adMeghna : Di !"a#ge

$a$ion a$ B"ai#a& Ba'a#

!ean Bounda#y: * +,D- (fo# alida$ion) / M ( fo# !ena#io)


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ModelCalibration

a$e# e el da$a f#om ou# model i $"en !om a#ed 5i$"B, +* mea u#ed da$a

elia&ili$y of ou# ea!" model #un i !al!ula$ed f#om $"efollo5ing e ua$ion

Re erence : %a ue *. ale"in M. a"man M. umaiya a&*lam . e'aie *.M. *"med ,. *"med %. adi# . i an M; elia&ili$y analy i of dynami! model < in 5#i$ing fo# $"e ou#nal:


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Model alia$ion and alid


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ScenarioScenarioNo.

ScenarioDescription

Snapshots Upstream DischargeBoundary(Has provided by Paul

Whitehead)

Do nstreamBoundary(Will be pro

Susan "ay)# %& ' LS '

()*Tem"'+.,+ -SLR -.+,m

Ma/imumdi0char e 1ear2+-3-4+-,-5 +-36

%& ' LS7our!1 time 0erie0 data

Sna"0hotMa/imum Di0char e 8ear

%& ' LS ' ()*7our!1 time

Ma/imum Di

#a Same a0 9. Decrea0e the "o!der hei ht0 b1 )m.$ %), ' MS '

()*Tem" '+.,3 -SLR -.+,m

Ma/imum

di0char e 1ear2+-3- : +-,-5 +-;+

%), ' MS

7our!1 time 0erie0 dataSna"0hotMa/imum Di0char e 8ear

%), ' MS ' ()*

7our!1 time

Ma/imum Di

$a Same a0 ;. Increa0e the "o!der hei ht b1 )m.


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,nunda$ion ,mage(Delf$3Dfo#ma$)!ena#io 3> id# !ena#io

3>*ila!ena#io 3>*ila( id# li?

landfall)

!ena#io3a>*ila

!ena#io 3a> id# !ena#io 3a>*ila( id# li?elandfall)


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,nunda$ion ,mage(Delf$3Dfo#ma$)!ena#io @> id#

!ena#io @a > id#

!ena#io@>*ila

!ena#io@a>*ila

!ena#io @>*ila( id# lilandfall)

!ena#io @a>*ila( id# lilandfall)


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Inundation Ima e2(rcGIS format5


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Inundation Ima e2(rcGIS format5


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Aolde# e#$o ing M


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Aolde# e#$o ing M


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Inundation and $o!der Overto""in Ima e


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Inundation Ima e2De!ft9D format5Ori ina! SIDR=+--6 SIDR !ike c1c!one at mid centur1 SIDR !ike c1c!one at end


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Inundation Ima e2(rcGIS format5Ori ina! SIDR=+--6 SIDR !ike c1c!one at mid centur1 SIDR !ike c1c!one at end


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$o!der Overto""in Ma"Ori ina! SIDR=+--6 SIDR !ike c1c!one at mid centur1 SIDR !ike c1c!one at end


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Surge Flooding


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Scenario

Scenarios %apacity o& Sundarban toact as a bu&&er against stormsurge inundation

Scenario ' )-->

Scenario ' &;>

Scenario ' # ;->

Scenario ' * +;>

Scenario ' $ ->

a"acit1 of Sundarban a0 a buffer a ain0t inundation i0 ca!cu!ated ba0ed on re!ative rou?one0 of Sundarban.


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Inf!uence Bone for SIDR

Inundation Ima e for E/act SIDR


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Inundation Ima e for E/act SIDR

Inundation Ima e for SIDR !ike 1c!one at Sundar


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Inundation Ima e for SIDR !ike 1c!one at Sundar

) + 9

3 ;


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Inundation (rea

Inundation De"th


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Inundation De th


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T7(NC 8OU

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STORM SURGE MODELING.pptx