Issue 12

A. Namdar et alii, Frattura ed Integrità Strutturale, 12 (2010) 57-62; DOI: 10.3221/IGF-ESIS.12.06 60 Sl. No Wave length (m) Wave Speed (m/s) Pressure (kg/m 2 ) Average Energy Density (kg/m 3 ) Radiation Stress in X Direction (kg/m 2 ) Radiation Stress in Y Direction (kg/m 2 ) 1 1000 22.14 2639.55 102089.323 153133.98 51044.66 2 2000 31.3 5279.09 408357.29 612535.93 204178.64 3 3000 38.34 7918.64 918803.90 1378205.85 459401.95 4 4000 44.27 10558.2 1633429.16 2450143.74 816714.58 5 5000 49.5 13197.75 2552233.06 3828349.59 1276116.53 6 6000 54.22 15837.3 3675215.61 5512823.41 1837607.80 7 7000 58.57 18476.85 5002376.81 7503565.20 2501188.40 8 8000 62.61 21116.4 6533716.64 9800574.96 3266858.32 9 9000 66.41 23755.95 8269235.13 12403852.69 4134617.56 10 10000 70 26395.50 10208932.3 15313398.39 5104466.12 Table 3 : Mathematical Characteristics of Wave in Shallow Water. Figure 3 : Mathematical characteristics of wave in shallow water. To reduce of wave length as per mathematical equation, one way is to reduce the water depth, this subsequently leads to reduction geometry and all dangerous wave effects. The Bandarabbas city of Iran with geographical condition placed in front of the Geshm Island with minimum of 1km distance. This geographical position increases tsunami wave if it occur between the Geshm Island of 120 km length and BandarAbbas coastal, this is a factor make complicate tsunami wave behavior. This geographical condition could be bringing back wave from one coastal to other (Fig 4) . Figure 4 : Satellite image of Persian Gulf. Figure 5 : Mangrove root shape.