Cyclone and Storm Surge - Iczmpwb.org

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“……………….Designingadisasterpreparednessplanisimpossiblewithoutknowingtherisk facinganygivenregion.TheStateofWestBengal,withapproximately290kmsofcoastline, incurshugelossofhumanlifeandeconomicassetsfromTropicalcycloneandstormsurge relatedinundation.Tomitigatetheeconomicandsocialimpactsofcyclonehazard,Department ofDisastermanagement,GovernmentofWestBengal,inassociationwithIndianInstituteof Technology,Kharagpur,hastakenaninitiativetowardspreparationofComprehensiveRisk AssessmentandDisasterMitigation Strategies.Amultidisciplinaryapproachhasbeen atemptedtoaccomplishthiscomplextaskthroughrigorousinteractionofexpertsfromdiverse backgrounds.Thoughthetaskwhichliesaheadismammothinnature,itisexpectedthatthis atemptwilbeahumblestepforwardinreducingtheriskofvulnerablecoastalsetlementsfrom thewrathofnature…………”
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HAZARD ASSESSMENT AND DISASTER MITI
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Project Team Though the outcome of
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Preamble The State of West Bengal,
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1.2 IMD, in its website (http://www
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1.4 5. Proposals for location of cy
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2.2 region is that which struck the
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2.4 Figure 2-2. Track of the 1970 B
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2.6 The most destructive element as
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2.8 the two regions is rather diffe
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2.10 2.4. The eastern coastal zone
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2.12 velocity is first checked. As
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2.14 Strong winds known as cyclones
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2.16 2.4.6. Soil characteristics Th
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2.18 All rivers have in general sou
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2.20 Another interesting feature of
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2.22 formed does not pose so much o
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2.24 2.4.11. Forest composition The
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2.26 Canning (Bidyadhari Outfall in
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2.28 Administrative information Pop
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2.30 Mangrove plantation beyond the
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2.32 A retired embankment of river
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2.34 The beaches are flattened by s
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2.36 of a doiminant tidalbasin of t
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2.38 primary mode is centered on th
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2.40 Aquaculture ponds located betw
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2.42 All the islands are situated w
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2.44 • Transport the water to the
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2.46 The other type of failure may
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2.48 channel floor, some of the riv
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2.50 embankments. Crops and propert
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2.52 2. To reduce the average dista
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3.2 a storm surge caused by a tropi
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3.4 these merchants may have been t
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3.6 Figure 3-1. Map of India during
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3.8 larger volume of sewage and dra
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3.10 receive, at least during the r
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3.12 3.9. Drainage scheme of Dr. B.
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3.14 3.10. CMPO and KMDA (originall
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3.16 Flows are diverted to the loca
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3.18 the Bhangar region through the
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3.20 the ocean level as a result of
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3.22 Table 3-6. Major pumping stati
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3.24 Table 3-9. Drainage basin area
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3.26 will lead to significant impro
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3.28 locks, one at Chitpur and anot
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3.30 Respectively. The discharge of
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3.32 Figure 3-6. The downstream of
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3.34 Figure 3-10 shows the tail end
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3.36
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3.38
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4.2 In US, there is a steady decrea
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4.4 This shows that Orissa (with 10
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4.6 30 25 20 15 10 Severe Cyclone C
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4.8 Table 3: Return periods of cycl
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4.10 Table 5: The number and return
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4.12 work station (the Automated Tr
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4.14 through this trough into the d
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4.16 Mean Low water 1.51 1.39 1.34
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4.18 τx,τy : x and y components o
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4.20 formulation. However, the rete
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4.22 ∂u ~ ∂ ~ ~ ∂ ~ ~ ∂ζ 1
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4.24 Δ p p(r) = p( ∞) − [1+ (r
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4.26 maximum surge for this event w
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4.28 U-Component of Velocity (Surfa
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4.30 ## ## ## #### ### ## ########
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4.32 V-component of Velocity (Surfa
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4.34 U-component of Velocity (Surfa
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## ################################
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4.38 V-Component of velocity (Surfa
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5.2 particular human settlement to
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5.4 The Composite Vulnerability Ind
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5.6 (2004 prices) prevalent in dist
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5.8 Moyna 0.6280 0.1592 0.542286 0.
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5.10 5.4.2. Social infrastructure H
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5.12 Budge-Budge(Part-II) 0.0000 0.
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5.14 secondary and tertiary activit
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5.16 F i Fˆ i ⎛ Total no. of =
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5.18 Table 5-4: Composite Index of
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5.20 M ′ = H M ′′ = I . S whe
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Chapter Six Mitigation Strategies a
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6.3 Beside these differences in lev
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6.5 • to reduce the destructive f
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6.7 6.2.4. Methods of Construction
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6.9 is attached to the structure. T
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6.11 (b) Medium rivers to armour th
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6.13 Likewise, in all the embankmen
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6.15 Figure 6 -5 Figure 6 -6 Figure
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Page 180 and 181: 6.21 Swaraupnagar Swaraupnagar 100
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Page 194 and 195: 6.35 Figure 6 -11 Figure 6 -12
Page 196 and 197: 6.37 Figure 6 -15 Figure 6 -16
Page 198 and 199: 6.39 Figure 6 -19 6.2.7. Recommenda
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Page 206 and 207: 6.47 15. Ceriops tagal 0.22 0.40 0.
Page 208 and 209: 6.49 shelterbelt (average 100 m wid
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Page 220 and 221: 7.8 Bagjola, Kestopur and SWF chann
Page 222 and 223: Executive Cost Summary of Recommend
Page 224 and 225: References Kanjilal (2005) “Sunde
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