Spatial analysis on strong winds occurrence in the northern region malaysia based on interpolated wind speed and wind direction map
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Date
2017-06
Authors
Ruzainah Binti Ahmad Taufik
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Abstract
This final year research project reviews the problem on the characteristics of the
strong winds occurrence in the northern region Malaysia. The specific month i.e.
October 2014 was selected that coincides with the period where the tornado outbreak
was reported to damage properties in Pendang district, Kedah. The study was intended
to determine the effect of the wind speed and wind direction on that specific month that
contributes to the strong wind occurrences. The wind data collected were processed and
spatially interpolated to produce wind speed and wind direction map using GIS-IDRISI
software. From the map analysis, the highest wind speed recorded was 3.1 m/s on the
4
th October 2014 at Butterworth meteorological station. Meanwhile, Pulau Langkawi
and Chuping stations have recorded the calmest wind speed of 0.3 m/s on 10th October
and 23rd October respectively. The plotted wind speed and wind direction maps were
able to show clearly the territory of the wind blows, where directions are shown by
arrows and the wind velocity represented by continuous colours. The results have also
produced contoured wind map within the northern region Malaysia. The spatial
statistics determines the relationship of wind speed and wind direction and the results
were illustrated using line charts, raster wind speed maps and the wind rose diagram
represents the wind direction. The outcomes of the study are essential in showing the
importance of wind speed and direction parameters in the design of building structures
that consider resistance to intense wind.