Surge the eradication of forests and the increase of

Surge affect is a standout amongst
the most critical calamities on the planet. The greater part of worldwide surge
harms happens in Asia. Reasons for surges are because of characteristic factors,
for example, overwhelming precipitation, high surges and high tides, and so
forth, and human factors, for example, obstructing of channels or irritation of
seepage channels, disgraceful land utilize, deforestation in headwater
districts, and so on1. Surges result in misfortunes of life and harm
properties. Populace increment brings about more urbanization, more
impenetrable region and less invasion and more prominent surge pinnacle and
spillover. Issues turn out to be more basic because of more extreme and regular
flooding likely caused by environmental change, financial harm, populace
influenced, open clamor and constrained assets. Surge misfortune counteractive
action and relief incorporates basic surge control measures, for example,
development of dams or stream dams and non-auxiliary measures, for example,
surge estimating and cautioning, surge peril and hazard administration, open
interest and institutional game plan, and so on. In the current decades, Indian
urban communities are seeing annihilating surges all the more frequently
because of overwhelming precipitation, violent winds, and so on., Though Tamil
Nadu isn’t under surge hazard inclined zone as mapped by meteorological office
(New Delhi), inside the neighborhood body there are few low-lying zones which
are helpless to immersion which likewise depends mostly on the improvements
close significant seepage frameworks, infringement of water bodies, failure of
real waterways to convey substantial downpours, flooding repositories2.
Chennai, one of the quickly developing metros is likely influenced by the
absence of seepage basically because of uncontrolled advancements of solid
spaces, infringement of real waste channels, contracting of marshlands, and so on.
In spite of the fact that Urbanization, the crucial factor of reaction for the
surge dangers is combined with the climatic fluctuation and environmental
awkward nature3.

 

                       

 

INTRODUCTION

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Floods are the most common natural
disaster which leads the causes of natural disaster victim worldwide. Since the
eradication of forests and the increase of large population populations to
coastal areas, river basin, and lakeshore, the risk of catastrophic flood loss
is important. In Tamil Naidu, Chennai city, Cuddalore, Kanchipuram, and
Tiruvallur districts are places that mostly affected due to flood. It has been
estimated that 33cm in 24-hour period of rain is received in Chennai and about
500 people lost their live due to disastrous of flood (Sphere India, 2015).
This part of India has its main rainy season during the northeast monsoon
(Srinivasan and Ramamurthy 1973; Yadav 2013) in October-December is the main
reason for flood caused. Although in the satellite-based CMORPH analysis the
largest precipitation amounts were recorded south of Chennai, we concentrate
our analysis on this city because the impact was large here. Damage was
estimated to be as high as $3 billion (U.S. dollars; Wall Street Journal, 11
December 2015). What separates a Chennai flood from a dash is the severity of
the effect done not only to surroundings but also the number of victims?

Supplies of fundamental necessities,
including milk, water and vegetables, were influenced because of strategic
troubles. Amid the December surges in Chennai and the connecting regions, drain
bundles sold for ?100 (RM6.33), five times more than their standard cost. Water
containers and jars were sold at costs between ?100 (RM6.33) to ?150 (RM9.50).
More stunning that vegetables were sold at max ?6 (RM0.38) to ?10 (RM0.63) well
beyond their ordinary normal cost at the discount level. Aside from essential
necessities, fuel supplies and travel were incredibly influenced, particularly
in Chennai. Various records of cost gouging were accounted for airfares to and
from for most parts of South India topped to very nearly 10 times over their
ordinary cost. Around outing admission from Mumbai or New Delhi to Bangalore,
Karnataka (the closest available city to Chennai, Tamil Nadu) was sold via
aircrafts like Jet Airways at rates of practically ?1 lakh (RM6521), an excursion
which would have conventionally fetched between ?10,000 (RM652) to ?20,000
(RM1263). Apart from airfares in South India, airfares additionally expanded
for different associations inside the nation, because of interruptions in rail
administrations. Accordingly, the Ministry of Civil Aviation cautioned
organizations against exploiting the circumstance to cheat and that it would
mediate if any of the traveller flight transporters did as such. All alone, the
common aeronautics service likewise worked flights from the Rajali maritime
airbase in Arakonam, Chennai with a settled cost of ?2,000 (RM126) per
traveller for go toward the northern states and ?1,000 (RM65) per traveller for
go toward the southern states.

The present research tries to clarify
the understanding of the main aspects needed such as attractiveness and the
value that causes the productivity of educational media tools for community by
providing a clear understanding on the factors influencing preparedness and
also problems faced by different social status of communicating medium.
Informational content and technique of delivering education through
communication were reviewed from various government agencies and non-profit
organizations that disseminate this information to the public (Strayhorn,
Dasmohapatra, Tilotta & Mitchell, 2012). It is found that most of the
disaster-related information shown in television bulletins and on
advertisements, pamphlets and brochures. In this case, different social status
requires different approach or methods in delivering disaster education.
Current disaster education needs improvisation frequently and delivered to
community as humans have low tolerance on long-term memory.

 

 

 

 

 

 

 

 

 

 

DISCUSSION

IMPACTS ON CHENNAI DUE TO
FLOOD

Chennai has encountered real surges
amid the most recent three decades in the years 1976, 1985, 1996, 1998 and 2005
and after that the huge one out of 2015. The seepage framework has been
discovered needing due to a few reasons. These include decrease in the vent
path caused by the development of scaffolds, sand bar arrangement at the mouths
of streams, obstructing of the depletes because of unpredictable dumping of
strong waste and development flotsam and jetsam, deficient outline limit,
absence of network of tempest sewers with large scale seepage, and
infringements4. While progressive governments have concentrated on
digging of waterways and desilting of real depletes, support of minor channels
is ignored because of shortage of assets as well as open lack of concern. In
this setting, it is essential to draw out the impact of terrible strong waste
administration on the state of waste channels, both major and minor.

Another impact of
urbanization which is typically disregarded is the “compound divider
impact”. Compound dividers are worked around all foundations, business and
mechanical associations and vast private buildings, keeping in mind the end
goal to avoid infringement. These compound dividers modify the nearby overland
stream ways and here and there even piece the neighborhood channels on account
of lacking arrangement of courses. This thus changes the nearby flooding
design, ensuring a few regions while flooding the others5. Amid
significant precipitation occasions a significant number of these compound
dividers crumple on the grounds that they are not typically intended to take
water weight from one side. In a few cases, the compound divider and streets
have influenced the normal stream furthermore, the absence of sufficient cross
seepage has prompted a lot of limited flooding and water logging. At times,
individuals who are influenced by surge, harmed these dividers and streets to
empty surge waters out of their region.

In the consequence
of the flooding occasion, there was great coordination between the
administration also, the resistance offices amid the protect stage6.
After the emergency stage go, there was no bearing from the State organization
to the Army which drove them to make sense of as what they were required to do.
Many volunteers concocted their assistance amid starting phases of the save
operations. Likewise, numerous associations and young people, split into
various gatherings, held turns in protecting individuals which obscured the
social contrasts among groups. Every one of the mosques, temples what’s more,
sanctuaries were opened to thesurge casualties who were additionally served
sustenance7. Indeed, even after the surge water emptied out of the
blood vessel streets, a considerable lot of the low-lying territories kept on
being overflowed with sewage because of silting and blockage of channels with
plastic, sleeping pads and sundry material. Specialists accumulated about
25,000 sterile laborers to clean the stinking refuse heaped up finished the
first a few days to keep the spreading of maladies. After the surges, heaped up
trash heaped added up to 8,000 to 10,000 tons. In typical times, it is around
650 tons. The State government requested a gigantic drive to clear unlawful
infringements along the streams. Covered hovels and semi-perpetual cement
walled houses were annihilated around earthmoving hardware underneath the
Maraimalai Adigal Bridge instantly in the wake of flooding over the waterway in
Saidapet.

 

 

 

 

 

 

 

 

 

 

 

TECHNOLOGY CONTRIBUTION

India is the seventh-biggest nation
by region, the second-most crowded nation (with more than 1.2 billion
individuals), and the most popular democracy in the world. For the recent flood
which occurred in Chennai, India grow continuous surge gauging models for urban
zones in the nation, acclimatizing information and data from satellite items,
Doppler climate radars, programmed climate stations and cutting edge numerical
climate expectation and hydrologic models. Create operational models for
continuous administration of urban waste frameworks utilizing water level
sensors and control frameworks calculations coordinated. Models and techniques
for imparting the gauges to various levels of basic leadership components.
Then, extend the probable changes in the frequencies of high power
precipitation utilizing extraordinary esteem hypothesis and stochastic climate
generators and to inspect the sufficiency of limit of the current basic
measures to adapt to the changing atmosphere and exhibit the utilization of the
models and the conclusion to end usage coordinating the models’ sensors choice
structure through a pilot venture. Lead the improvement of post-surge
administration preparing and instructive material, and make open mindfulness
programs and include groups in readiness and post surge safeguard and
recuperation process.         

Comparatively Japan which has a
population of approximately 127 million people has the world’s greatest
framework for surge aversion: an enormous fundamental save tank, five
regulation storehouses and a system of more than six kilometres of underground
pipes of a breadth of 10.6 meters. All of this are the flood technology used
for flood prevention. The framework gathers water, channels flooding from four
streams and spurts out up to 200 cubic meters of water every second into the
district’s primary waterway, close Tokyo8. Its effect, in a region
where urbanization remains at 50 percent, is significant, as the Chief of the
Metropolitan Area’s Outer Underground Discharge Channel, laid out. The
framework utilizes no less than five vertical shafts that are so tall and enormous
that a Space Shuttle could fit right in. Each pole is associated with a
ten-meter width, 6.3-kilometer divert that completions in an enormous weight
altering tank. The reason for this tank is to moderate the relentless stream of
water and furthermore to keep up ideal water weight in the framework. The whole
framework is no less than 177 meters in length and is around 78 meters in width
and is arranged no less than 22 meters underneath the ground. There are
colossal pumps that control the water levels and the weight itself and is fit
for releasing up to 200 cubic meters of water each second. Essentially about a
swimming pool of water each second.

 

GEOGRAPHICAL FACTORS
AFFECTING

Researchers have discovered that the
outrageous El Nino conditions and the warming pattern in the Bay of Bengal have
contributed similarly to the extraordinary substantial precipitation in Chennai flood which occurred between November 30 and
December 2, 2015.

El Nino and La Nina occasions are a
characteristic piece of the worldwide atmosphere framework. El Nino occasions
are related with a warming of the focal and eastern tropical Pacific, while La
Nina occasions are the switch, with a maintained cooling of these same regions.
These adjustments in the Pacific Ocean and its overlying climate happen in a
cycle known as the El Nino– Southern Oscillation (ENSO)9. El Nino
happens when the ordinary exchange winds debilitate (or even turn around),
which lets the warm water that is generally found in the western Pacific stream
rather towards the east. This warm water uproots the cooler water that is
typically found close to the surface of the eastern Pacific, setting off
barometrical changes that influence climate designs in many parts of the world.
These outcomes incorporate expanded precipitation over the southern level of
the US and in Peru, and dry season in the West Pacific and here and there
related to wildfires in Australia.

El
Nino can influence the Indian storm through barometrical flow. At whatever
point the El Nino flag appears in barometrical flow, the nearby ocean surface
temperature can likewise change. It, for the most part,
causes not as much as would be expected precipitation on account of the
southwest storm. Conversely, it achieves above-typical precipitation amid the upper
east rainstorm. This is a result of the distinction in regular breeze designs
between the two storms. The 2015 El Nino occasion ended up being an
extraordinary El Nino occasion. In this way, the current investigation
recommends that the outrageous El Nino that happened in 2015 assumed a vital
part in Chennai’s substantial precipitation.

 

MEASURES
TO BE TAKEN BY THE INDIAN GOVERNMENT

There
are a few measures which should be taken into consideration by the Indian
government to avoid damages caused by disasters. The first and the principal is
to rebuild the National Policy on fiasco administration mirroring the
all-encompassing methodology including counteractive action, moderation, and
readiness in pre-calamity stage with proper extra subsidizing, alongside the so
far existent strategy of the post-catastrophe help and restoration under
emergency administration.

Formation
of mindfulness for fiasco lessening is desperately required among strategy
producers, chiefs, overseers, experts (draftsmen, designers, and others at
different levels) money-related establishments (banks, protection, house
financing foundations) and NGOs and intentional associations. Making
mindfulness for enhancing readiness among the groups, utilizing media, school
training, and the system of the building focus.

Moreover, building sand bag dike
and building retaining wall is also one of the essential and cost-efficient
method to prevent flood which should be taken into consideration by the Indian
government. Sand bag dike is the emergency flood protection method most
frequently used. Sand is available at many locations and is relatively
inexpensive. Retaining walls may also provide effective emergency flood
protection. A retaining wall is formed by setting two lines of posts parallel
to the stream channel, nailing boards to the inside of each row, and bracing
posts across from one another with a plank or wire.

Directing small scale
zonation reviews of substantial urban territories falling in the fiasco
inclined districts and getting ready fitting readiness and relief anticipates a
critical premise. To guarantee utilization of debacle safe development methods
in all lodging and different structures to be attempted under the Central and
State plans10. Making compulsory, the utilization of catastrophe
safe codes and rules identified with calamity safe development in the houses
and structures in all divisions of the general public by law and through
motivations and disincentives. To make an appropriate institutional system at
national/state level to prompt and enable the current catastrophe help to set
up in definition and refreshing of short and long-range activity anticipates
the readiness, moderation and aversion of cataclysmic events. (the
systems proposed are foundation of a National Scientific and Technical
Committee at Central level and Natural Disaster Mitigation Centers at State
levels). To advance the investigation of cataclysmic event counteractive
action, moderation and readiness as subjects in design and building educational
program. To make definite database on peril events, harm caused to structures
and foundation and the financial misfortunes endured and guarantee its openness
to intrigued scientists for successful investigation of expenses of
catastrophes and advantages of mitigative activities. To devise fitting
strategy instrument and financing support for critical calamity readiness and
aversion activities in high hazard regions including overhauling the protection
of existing lodging and related structures and frameworks. To incorporate
R work in a fiasco readiness, alleviation and counteractive action as a
push territory with the goal that satisfactory assets are reserved for the
plans of R associations and in addition the concerned Central Ministries
and State Governments11.

 

 

 

 

 

 

 

 

 

 

 

 

CONCLUSION

Environmental change influence
flooding in Chennai through changes in precipitation, temperature, ocean level
and waterway forms. This will worsen the current impacts of flooding on
foundation and group administrations, including streets, storm water and
wastewater frameworks and seepage, stream surge relief works, and private and
open resources including houses, organizations and schools in Chennai.

Environmental change was changed the
surge chance administration needs and even increment the hazard from flooding
to unsatisfactory levels in a few places in Chennai. It is along these lines
critical that surge in Chennai chance appraisals fuse a comprehension of the
effects of environmental change on the surge peril.

Overseeing present-day and future
hazard from flooding includes a mix of hazard evasion and hazard diminishment
exercises. The treatment alternatives could be a blend of keeping away from
hazard where conceivable, controlling danger through auxiliary or
administrative measures, exchanging hazard through protection, tolerating
hazard, crisis administration arranging, cautioning frameworks, and conveying
hazard to influenced parties. The best mix will think about the necessities of
who and what is to come and not bolt groups into an eventual fate of expanding
dangers from flooding.

 

 

 

 

 

 

 

REFERENCES

 

1 Dennis Thom, Robert Kruger, Thomas Ertl, Ulrike
Bechstedt, Axel Platz, Julia Zisgen, Bernd Volland, “Can twitter really
save your life? A case study of visual social media analytics for situation
awareness”, IEEE Pacific Visualization Symposium, 2015.

2 Jens Ortmann, Minu Limbu, Dong Wang, Tomi Kauppinen, “Crowdsourcing
linked open data for disaster management” in Institute for Geoinformatics
University of Muenster, Germany, 2011.

3 Isaac Triguero, Salvador Garcia,
Francisco Herrera, “SEG-SSC: A framework based on synthetic examples
generation for self-labeled semi-supervised classification”, IEEE
Transactions on cybernetics, vol. 45, no. 4, April 2015.

4 Jun Li, Zhi He, Javier Plaza, Shutao Li,
Jinfen Chen, Henglin Wu, Yandong Wang, Yu Liu, “Social Media: New
Perspectives to Improve Remote Sensing for Emergency Response”, Proceedings
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5 MS Tehrany, B Pradhan, MN. Jebur, “Flood
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vector machine models in GIS”, journal of Hydrology, vol.
512, pp. 332-43, 2014.

6 B. Pradhan, “Flood susceptible mapping and risk area
delineation using logistic regression GIS and remote sensing”, Journal
of Spatial Hydrology, vol. 9, no. 2, 2010.

7 MS Tehrany, B Pradhan, MN. Jebur, “Spatial
prediction of flood susceptible areas using rule based decision tree (DT) and a
novel ensemble bivariate and multivariate statistical models in
GIS”, Journal of Hydrology, vol. 504, pp. 69-79, 2013.

8 K Khosravi, HR Pourghasemi, K Chapi, M. Bahri,
“Flash flood susceptibility analysis and its mapping using different
bivariate models in Iran: a comparison between Shannon’s entropy statistical
index and weighting factor models”, Environmental monitoring and
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9 Ravishankar, Gnanappazham, Ramasubramanian, Sridhar,
Selvam, Navamuniyammal, “Atlas of Mangrove Wetlands of India, Part -2 Andhra
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10 Hatwar, Subrahmanyam, Mohapatra, Roy, Bhowmik,
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APPENDIX

FLOOD
IN CHENNAI (PROPOSAL)

Flood
is an overflow of large amount of water beyond it’s normal limits, especially
over what is normally dry land (Oxford dictionary: 789). About a million
residents in Northern Chennai were affected by major flood due to heavy
rainfall which took place on 8th November 2015, Chennai to
Cuddalore. This Chennai rainfall formed the worst flood in the year 2015 after
the year 1982 and 1997 (R. Prasad, 2017) and is still a concerning problem in
India till today.

According
to researches, one of the factors that plays an important role in the flood is
the extreme El Nino conditions and warming of Bay of Bengal (R. Prasad, 2016;
K.S. Rajgopal, 2016). El Nino occurs due to difference in seasonal wind
patterns between Southwest and Northeast monsoon. El Nino has majorly affected
the Southwest monsoon winds which resulted in rise of sea temperature because
of the mixture of cold water and warm water from Bay of Bengal and Arabian Sea.
Certain measures should be taken in order to prevent flood from occurring. Such
as, water disposal system should be improved so that proportion of rain water
to dispose will take a shorter time. Usage of sand bags and building retaining
wall is also one of the essential way to prevent flood. This helps to reduce
the number of deaths by providing time to shield themselves and their
belongings (Anna University’s student, 2015).