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modelling O
for O
Patuakhali O
district O
of O
Bangladesh O
located O
in O
the O
south O
central O
part O
of O
Bangladesh O
coast O
. O
For O
this O
study O
, O
maximum O
cyclonic O
winds B-climate-nature
of O
5 O
, O
10 O
, O
20 O
, O
50 O
and O
100 O
years O
return O
periods O
were O
calculated O
using O
Gumbel O
distribution O
of O
annual B-climate-properties
maximum I-climate-properties
wind I-climate-properties
speeds I-climate-properties
in O
Bangladesh O
between O
1960 O
and O
2017 O
. O
A O
linear O
decay O
model O
namely O
the O
Surge B-climate-models
Decay I-climate-models
Coefficient I-climate-models
was O
used O
to O
calculate O
the O
surge B-climate-nature
decrease O
with O
distance B-climate-properties
from O
the O
coast O
. O
Spatial O
analysis O
of O
the O
surge B-climate-properties
height I-climate-properties
, O
linear O
decay O
model O
and O
Digital O
Elevation O
Model O
( O
DEM O
) O
are O
used O
to O
produce O
the O