Gis Project Abdul Qadir

8/6/2019 Gis Project Abdul Qadir

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INTRODUCTIONThe recent development of spatial data

infrastructure in the frame of geographic

information systems (GISs) has created

the new era of different applications in

the field of environment.


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WHY GISNOTCONVENTIONAL

APPROACH

1) Conventional approaches has limitations

2) Cost factor

3) High mentanace

.


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CITY DESCRIPTION

IN TRIVENDRUM , average traffic counts have increased over the previous

year and have been climbing at about that same rate for the past many years.

Vehicle emissions are responsible for the majority of CO, hydrocarbons, NOx,

SO2 and inhaled particulate matter present in the atmosphere of the city.

At the same time the influence of meteorological conditions is also analyzed.

The entire city has got only 4 ambient air quality monitoring stations. With this

limited number of stations, to represent the air quality in Trivendrum spatially

is a difficult task.


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METHODOLOGY

Surveys for air pollutants as NOx, and SO2 were conducted.The sampling stations were located in PRS HOSPITAL and SMV

HIGH SCHOOL in the city heart.

The measurement was taken on daily basis and averaged for the

whole month and the data for the four years of the above mentioned

locations were taken.

The methods for calculating SO2 was WEST AND GAEKE method

and for NOx it was SODIUM ARGENITE method.

The pollutant concentrations for different years are visualized in the

histograms view of the Trivendrum urban area.

ARC GIS software was used.


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DATAUSED

(NOTEALLDATAISINMICROGRAMSPERMETERCUBE)

NO2

jan feb march april may june july aug sept oct nov dec

PRS 2006 0 0 0 0 0 25.44 24.96 23.21 25.04 22.65 22.8 26.25

SMVHS 2006 0 0 0 0 0 27.68 25.11 28.35 26.92 24.24 23.49 31.93

SO2

jan feb march april may june july aug sept oct nov dec

PRS 2006 0 0 0 0 0 6.34 6.52 6.43 7.08 6.73 5.57 6.8

SMVHS 2006 0 0 0 0 0 6.53 6.3 6.79 6.89 5.61 5.57 7.01


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ANALYSIS

With the dataWith the data collected,an attribute table was created

in ARG GIS and with the help of properties BAR diagram of the

pollution data was plotted.


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NOX DATA

2006


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S02 DATA


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RESULTSIt was found that the emission of NO2 and SO2 has increased

at an alarming pace but still they havent reached a

dangerous limit.

If suitable measures were taken then pollution hazards maybe controlled.

The vehicle population has increased with time.The ambient

air quality of trivendrum has deteriorated with an increase in

the number of vehicles and industrial pollution.

A recent study by the State Pollution Control Board (PCB)

found that the levels of suspended particular matter (SPM)

has increased at several places


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URBANISATIONThe urban changes has been shown in the outer

trivendrum city region

The images were taken in 4 years time period gap andurbanized region was found out as shown in the images

below


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and after urbanisation

Before urbanisation


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Documents

Gis Project Abdul Qadir