by Haziqah Amin.
On Saturday, the 7th of April, geography students from PTEK had a trip around Brunei-Muara district called 'The Mass Movement Trip'. Its purposes were to visit places in the district where there are mass movement or hill slopes occurring.
There were 20 students who take Geography from PTEK involved in this trip.
The trip started at around 2.15PM. They first went to Bukit Katok, which is located only a few meters away from PTEK. After having a few sights on hill slopes, they left the place and went to Bukit Telanai next.
Mass movement, also known as mass wasting, is the downward movement by
gravity of rock, regolith (loose, weathered rock)
and/or soil on the sloped top layers of the
Earth’s surface. It is a significant part of the
process of erosion because it moves material
from high elevations to lower elevations. It can
be triggered by natural events like earthquakes,
volcanic eruptions and flooding but gravity is its
driving force. Fortunately for us, there has not been any reported cases of earthquakes or volcanic eruptions happening in Brunei. In Brunei, having tropical rain forest as its climate, what usually triggers these processes is the soil erosion caused by heavy rainfall.
'The hill slopes in Mabohai were the most obvious ones. You could see patches where there used to be trees growing and not see them there anymore after being washed off by heavy rainfalls' said Aziemah from AE 20, describing the sight she was having when they visited some hills in Mabohai.
It was a knowlegdable trip as they had learnt a lot regarding mass movement and hillslopes from it. Hopefully the trip could help them in their understanding about this particular topic and thus, assisting them in their exams.
“Knowing where things are, and why, is
essential to rational decision making”- Jack
Dangermond, Environmental Systems Research
Institute (ESRI)
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