Cyclone and Storm Surge - Iczmpwb.org

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4.8 Table 3: Return periods of cyclones and severe cyclones crossing coastal blocks in the South 24 Pargana and East Midnapore Sl. Blocks Return period No. Severe Cyclones Cyclones 1. Gosaba 19 years 6 years 2. Kultali 114 years 19 years 3. Patharpratima 114 years 114 years 4. Namkhana 57 years 10 years 5. Sagar 114 years 114 years 6. Kakdwip 114 years - 7. Ramnagar-I - 19 years 8. Ramnagar-II 57 years 16 years 9. Contai-I - - 10. Contai-II 114 years 57 years 11. Khejuri-II - 57 years 12. Nandigram-I - 114 years 13. Sutahata - - Nine districts of West Bengal get affected by cyclones. But as far as vulnerability is concerned, South 24 Pargana, East Midnapore, North 24 Pargana and Bankura have cyclone return period of less than 20 years and may be considered as vulnerable. The block-wise (of all blocks) statistics of cyclones and severe cyclones from South 24 Pargana, East Midnapore and Haora are shown in tables 4, 5, 6 respectively. The East Midnapore and South 24 Pargana are the two most vulnerable districts with cyclone return periods of four and three years respectively. In East Midnapore district, eleven blocks, viz., Ramnagar-I, Ramnagar-II, Contai-I, Contai-II, Contai-III, Nandigram-I, Nandigram-II, Egra-I, Egra-II, Pataspur-I and Pataspur-II have cyclone return period of less than 20 years and may be considered as vulnerable. Seven blocks (Gosaba, Kultali, Namkhana, Patharpratima, Sagar, Diamond Harbour-I and Basanti) of South 24 Pargana are vulnerable as far as cyclone frequency is concern. Eleven blocks (Ramnagar-I, Ramnagar-II, Contai-I, Contai-II, Contai-III, Nandigram-I, Nandigram-II, Egra-I, Egra-II, Pataspur-I and Pataspur-II) can be termed as vulnerable to cyclonic storms.
4.9 Table 4: The number and return period of cyclones and severe cyclones that affected the blocks of South 24 Pargana District Block Name Severe Cyclones Number Return Period Cyclones Number Return Period Gosaba 6 19 25 5 Kultali 1 114 15 8 Patharpratima 1 114 11 10 Namkhana 2 57 14 8 Sagar 1 114 12 10 Kakdwip 1 114 4 28 Kulpi 0 - 4 28 Mathurapur-I 0 - 4 28 Mathurapur-II 0 - 3 38 Mandirbazar 0 - 3 38 Diamond Harbour-I 0 - 6 19 Diamond Harbour-II 0 - 2 57 Mograhat-I 0 - 3 38 Mograhat-II 0 - 2 57 Jaynagar-I 0 - 1 114 Jaynagar-II 0 - 1 114 Basanti 0 - 9 13 Canning-I 0 - 4 28 Canning-II 0 - 2 57 Baruipur 0 - 5 23 Bhangar-I 0 - 2 57 Bhangar-II 0 - 5 23 Sonarpur 0 - 5 23 Falta 0 - 3 38 Bishnupur-I 0 - 1 114 Bishnupur-II 0 - 1 114 Budge Budge-I 0 - 1 114 Budge Budge-II 0 - 2 57
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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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Page 92 and 93: 3.30 Respectively. The discharge of
Page 94 and 95: 3.32 Figure 3-6. The downstream of
Page 96 and 97: 3.34 Figure 3-10 shows the tail end
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Page 118 and 119: 4.18 τx,τy : x and y components o
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Page 122 and 123: 4.22 ∂u ~ ∂ ~ ~ ∂ ~ ~ ∂ζ 1
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Page 128 and 129: 4.28 U-Component of Velocity (Surfa
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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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6.17 Benefit cost ratio Area benefi
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6.19 Location and cost of proposed
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6.21 Swaraupnagar Swaraupnagar 100
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6.23 Gobadia Kakdwip Dk Kasiabad &
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6.25 Location and cost of proposed
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6.27 " Jagaddal " 800 6400000 " Jag
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6.29
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6.31
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6.33
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6.35 Figure 6 -11 Figure 6 -12
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6.37 Figure 6 -15 Figure 6 -16
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6.39 Figure 6 -19 6.2.7. Recommenda
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6.41 4. Rajraj Swarup & Ramnagar Ab
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6.43 project. Such sediment deficit
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6.45 paludosa, Rhizophora apiculata
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6.47 15. Ceriops tagal 0.22 0.40 0.
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6.49 shelterbelt (average 100 m wid
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6.51 (assuming land acquisition cos
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6.53 location are missing reducing
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7.2 resulted in large scale waterlo
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7.4 5. No adverse effect in drainin
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7.6 15 LT Panel L.S. 2,200,000 16 I
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7.8 Bagjola, Kestopur and SWF chann
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Executive Cost Summary of Recommend
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References Kanjilal (2005) “Sunde
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“……………….Designingadis
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