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International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B2. Istanbul 2004
via Spatial Analysis, such as hydrological analysis and
geometric transformations.
Interpolate grid analyze is a best way to show bioenvironmental
pollutions on digital and printable maps. In the implementation
phase, especially interpolate grid analyze has been done to
emphasize on the density of pollutions by GIS software.
3. IMPLEMENTATION PHASE
After several studies and researches about 45 suitable stations
have been established for data sampling on the Persian Gulf.
These stations were located by Global Positioning System
(GPS) facilities. Of course, the situation of these stations was
greatly depended on the various kinds of elements such as sea
topography, distance from beach and other stations and etc.
Distribution of these stations has been shown in below.
31N
IRAQ |
30N TES — ;
KUWAIT X: |
WN : 2d
|
28N : zi
e |
Zin |
zx! | SAUDI ARABIA
25N :
t
f
4
v
AN | : lust BR
ATE — ARE 4XE- SCE - SIE . SIE: GE ME 55E 56E 5E
300 0 300 ___600 Miles
Sampling stations of the survey area in the Iranian waters of the Persian Gulf
Figure 1. Sampling Stations
Regards to some factors and elements, a number of these
stations were chosen for each sampling, so these stations are
different in various sampling.
Data gathering and sampling from various kinds of existing
biological and non-biological groups has been done in the
different levels of the Persian Gulf.
These data were divided to 6 various groups of physical,
chemical, biological and non-biological elements.
Row data was provided after data gathering, so data processing
is an essential work to prepare some efficient information.
Processing of row data which provided from data sampling
should be performed by experts and technical persons and
methods.
And at last, map and chart productions to display distribution of
biological and non-biological elements and also data analysis
have been implemented by using of GIS. This section has been
emphasized in this paper. So that it has been mentioned in the
previous section, maps, charts and map data are casier to
research, analyze, and present.
To make a good understanding of map capabilities and how
they can display the pollution distribution and density, two
various distribution patterns of hydrocarbon elements
concentration in the sediment of the northern part of the Persian
Gulf, have been shown in the following figures.
ESHOAR-E [fà
IRAQ
i hi LRARAN
KUWAIT +
Total TPH ‘net
Summer
oes | ENS 0-25
BE 56-75
IE 75 - toc
+ QATAR,
sa
50. 06 . 80 100 Mies UAE
es
Ry Tey 5 3 + 7 Y r Y
{TE 4E ASE SE ste [D se se ME se TE
Figure 2. Hydrocarbon distribution pattern in summer 2001
ROSDAR Band
IRAQ
nt À sex.
KUWAIT 3^
Totat TPH (79$)
Winter
uy
QATAR
wre
o We
Figure 3. Hydrocarbon distribution pattern in winter 2001
As it is clear in these figures, density of hydrocarbon is
concentrated on the northwest of Persian Gulf, and the amount
of it in winter is more than in summer.
Also another tool for assessment and analysis is charts and
histograms. But it is useful for separated data and it shows
linear. distribution. In the next figure, the distribution of
hydrocarbon is displayed in a linear chart.
> en
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X } ;
o j
= 7 pe
© f a n^ \ t
3 ;
Lr j =r Hm
À
1.2.3 4545 7.$9-9. 19 11 42 13 16
Transect
Figure 4. Hydrocarbon distribution chart in summer and winter
2001
Of course the average of hydrocarbon in each sampling station
was used in the above chart, so that the column or Y axe shows
the amount of average hydrocarbon and the X axe shows
transects which are the sampling lines and displayed in the
figure.
Six groups of physical, chemical, biological and non-biological
elements have been analyzed in the form of above and they
shows clearly the decreasing of biological elements and
