FLOODING DUE TO NATURAL COASTAL DISASTERS-ROLE OF VEGETATION
Coastal flooding is a result of rise in the sea level above the normal tidal range. This is a result of one or a combination of a variety of factors like High tides - extremes of normal astronomical tidal activity (e.g. the spring tides that occur at the full and the new moon), cyclones, combination of tides and wave action, Storm or tidal surges created low pressure formations, flooding through estuaries, improper drainage in land during monsoons, tsunamis and rise in sea level as a result of global warming and melting of ice etc. Factors responsible for sea level rise are thermal expansion of the Ocean, melting of the mountain glaciers and small ice caps, melting of green land ice sheet and the rapid break down of the Antarctic ice sheet according to UNEP (1989) India has been identified as one among the 27 countries that are most vulnerable to sea level rise. (For India the average sea level rise is about 2.5 mm per year, since 1950). The sea level rise is a gradual process for proper planning is necessary. While the sea level rise would result in submergence of coastal areas directly, it will indirectly alter the pattern of shoreline stability. On the other hand, the increased frequency of extreme events would mean enhanced thereat to the shoreline stability.
vegetal resistence mannings n vegetal-drag fluid flow
Sundar V
Department of Ocean Engineering, Indian Institute of Technology Madras, INDIA
国际会议
High-level International Forum on Water Resources and Hydropower(第一届国际水利水电高层论坛)
北京
英文
530-532
2008-10-17（万方平台首次上网日期，不代表论文的发表时间）