TIDAL BORE OBERVATION STATION AT BANDAR SRI AMAN,
SRI AMAN DIVISION, SARAWAK
BACKGROUND INFORMATION
Tidal
bore is a tidal phenomenon in which the leading edge of the incoming
tide forms a wave or waves of water that travel up a river or narrow bay
against the direction of the current. Bores take on various forms,
ranging from a single breaking wavefront - effectively a shock wave - to
'undular' bores' comprising a smooth wavefront followed by a train of
solitary waves (solitons).
Sri Aman is situated about 205 kilometres by road from Kuching City. The unique phenomenon of tidal bore occurrs in Batang Lupar, Sri Aman, State of Sarawak. Batang Lupar flows from the Klinkang Range to South China Sea with river length of 275 kilometres. Geographicaly, Batang Lupar has a big opening at the rivermouth and becomes narrow when it reaches upstream. It is believed that tidal bore starts at Pulau Seduku located about 44.6 kilometres from river mouth and 34.5 kilometres from Sri Aman town. Tidal bore or locally known as benak occurs everyday with different wave lengths and heights. However, during spring tide, normally on the third and eighteen day of the Chinese Lunar Calendar, tidal bores with high magnitude can be observed clearly.
Sri Aman is situated about 205 kilometres by road from Kuching City. The unique phenomenon of tidal bore occurrs in Batang Lupar, Sri Aman, State of Sarawak. Batang Lupar flows from the Klinkang Range to South China Sea with river length of 275 kilometres. Geographicaly, Batang Lupar has a big opening at the rivermouth and becomes narrow when it reaches upstream. It is believed that tidal bore starts at Pulau Seduku located about 44.6 kilometres from river mouth and 34.5 kilometres from Sri Aman town. Tidal bore or locally known as benak occurs everyday with different wave lengths and heights. However, during spring tide, normally on the third and eighteen day of the Chinese Lunar Calendar, tidal bores with high magnitude can be observed clearly.
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