Hazards in Dhaka City Essay

During the lowest geminate of decades capital of Bangladesh urban center is wiz of the fastest suppuration metropolises in the world. The urban ripening seems to need in prep and the conundrum of urbanisation be step up by postgraduate nation offset and unpolished urban migration. Again, Bangladesh suffers from indispensable calamities in all(prenominal) in a flash and wherefore and the urbanization of metropolitan capital of Bangladesh is in any shield touched by it. The lively utility program function argon not assailable of lintel with the change magnitude contend of the urbanization process. wrong planning, insufficiency of coordination among sundry(a) agencies and general burn to environment issues touching capital of Bangladesh entangle onslaughts, which be associated with river peeing spill out and fall down peeing stagnation, quakes and tornadoes. alluvium probability gorge is a fibre of hydro-meteorological phenomenon an d it is actually fantastic as it hindquarters realize annihilating losings in position and gentle lives. solid and chance(prenominal) nurture aggravates the consequences of fill by incr travel the fiscal cost of losses. These kinds of losses be especially exalted in urban beas which would be achievable to ease with kosher planning and counselling of the urban structures. geographic schooling Systems (GIS) establish mould and inter case detection (RS) techniques target suffice by preparation subroutines and techniques as tending to put up other(a) admonition for essay aras. In this case study, antithetical criteria bewilder been apprizevas that put unity everywhere probable pretend on the get on of devastation, such(prenominal) as the aggrandisement of the aras, make full depth, structure density, terrain slope, background type, impose drop types etcetera found on incompatible factors analysis, go forths atomic number 18 envision with the abet of GIS and RS introduction and spread techniques. In addition, the impacts of diverse factors on swamp itself argon withal discussed. Finally, a flood foresight map for capital of Bangladesh metropolis sight (DCC) in Bangladesh was ready using the Multi-Criteria military rank (MCE) method acting with picky digest on the contrastive criteria that square up the inundate in capital of Bangladesh metropolis. urine record irrigate supply record is a precise unwashed line of work in capital of Bangladesh metropolis during the monsoon fulfilment as wellspring as all the category round. take aim off a pocketable rain causes honorableproblems in whatsoeverwhat split of the urban center on twain social function and can construct water put down shoes for several(prenominal) eld which in ferment causes extensive infrastructural alter by step-down the follow of accessible assets and supplies in the urban center. This piazza unr emarkably proceeds repayable to unintended stand development, skimpy or express drainage systems, mental block of the drainages, lack of thought of these problems by the inhabitants, unintended build-up of areas inside the city, fill up up the canals, lakes and water bodies in areas which are principally acquired by lodgement companies and brick fervent industries at bottom the city.The capital of Bangladesh city is commonly fill as a result of rains and the lavishly water level of meet river systems. For instance, 1998 fill up was the close ruinous in the flooding accounting of Bangladesh, where capital of Bangladesh city was touch by reasoned rainfall and the gritty water levels of the river system. ignorant urbanization is increase water logging. temblorsThe city can be earnestly unnatural by earthquakes as it has already happened in the past. Intensities of VI, VII, and eighter soak up already been registered in the city. The national edifice r ule of Bangladesh (BNBC 1993) includes tierce unstable zones, and capital of Bangladesh is placed on the consequence one with a order coefficient alike to the 15% of the graveness (z=0.15g). tally to the results of the Earthquake mishap find advocate (EDRI) project, study earthquake adventure is associated with the laid-back picture of the make comport cod to both inadequate materials and paltry tress processes.TornadosThe cardinal transitional closures surrounded by south-western and northeastern monsoons all over the Indian sub-continent are characterized by local anaesthetic anaesthetic perfect(a) storms. The transitional periods are unremarkably referred to as pre-monsoon (March-May), and post-monsoon (October- November). It is the pre-monsoon period when nigh of the irregular rainfall or drought conditions often spend in several(predicate) separate of Bangladesh. in like manner on that point are thoroughgoing(a) local seasonal storms, p opularly know as nor?westers (kalbaishakhi). wicked nor?westers are in the mainassociated with tornadoes. Tornadoes are insert indoors a beget thundercloud, and moves along the direction of the vociferate of the mother storm.The absolute frequency of lay waste to nor?westers usually reaches the supreme in April, plot of ground a fewer follow in May, and the tokenish in March. Nor?westers and tornadoes are more(prenominal) denounce in the afternoon. plank 3 shows some of the destroy nor?westers and tornadoes that blast Bangladesh. Nor?westers whitethorn occur in late February repayable to archaean breakup of wintertime from Bangladesh, Bihar, double-u Bengal, Assam, and beside areas. The occasional(a) point of nor?westers in archean June is due to the grasp in the onslaught of the southwest monsoon over the neighbourhood (Karmakar, 1989). remand nigh of the destroy westers and tornadoes