Pemetaan batimetri lantai laut cetek delta Sungai Kelantan, Malaysia hingga Pelantar Benua, Laut China Selatan

Translated title of the contribution: Bathymetric mapping of shallow coastal area of Sungai Kelantan Delta, Malaysia onwards South China Sea Shelf

Nurul Afifah Mohd Radzir, Che Aziz Ali, Kamal Roslan Mohamed

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Seafloor mapping using sound waves has found a unique landform sea floor with various morphological features vary from shallow coastal area of Sungai Kelantan delta onwards South China Sea shelf. The seafloor morphology was found increasingly to 38 m onwards sea shelf. The four cross sections of the ocean floor found gradient of less than 1° with the value between 0.05° and 0.57°, showing an uneven incline to the continental shelf. An action of a triggering mechanism causes the hydraulic jump phenomenon to affect the seafloor morphology, thus produce black holes as deep as 26 m from the seafloor and a sandbar with height of 8 m above sea level with an area of 9 km2. The phenomenon recognition was confirmed by the four small closed contours known as small craters in the three different places. All the features and morphological changes in the seafloor were setting by the down drift of water from the mouth of Kelantan River continuously with different speed depending on river discharges and climate season.

Original languageIndonesian
Pages (from-to)1843-1848
Number of pages6
JournalSains Malaysiana
Volume45
Issue number12
Publication statusPublished - 1 Dec 2016

Fingerprint

shelf sea
seafloor
hydraulic phenomena
seafloor mapping
sandbar
river discharge
landform
crater
coastal area
continental shelf
cross section
sea level
climate
river

Keywords

  • Bathymetric
  • Density flow
  • Hydraulic jump
  • Sungai Kelantan delta
  • Super-critical flow

ASJC Scopus subject areas

  • General

Cite this

Pemetaan batimetri lantai laut cetek delta Sungai Kelantan, Malaysia hingga Pelantar Benua, Laut China Selatan. / Radzir, Nurul Afifah Mohd; Ali, Che Aziz; Mohamed, Kamal Roslan.

In: Sains Malaysiana, Vol. 45, No. 12, 01.12.2016, p. 1843-1848.

Research output: Contribution to journalArticle

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AB - Seafloor mapping using sound waves has found a unique landform sea floor with various morphological features vary from shallow coastal area of Sungai Kelantan delta onwards South China Sea shelf. The seafloor morphology was found increasingly to 38 m onwards sea shelf. The four cross sections of the ocean floor found gradient of less than 1° with the value between 0.05° and 0.57°, showing an uneven incline to the continental shelf. An action of a triggering mechanism causes the hydraulic jump phenomenon to affect the seafloor morphology, thus produce black holes as deep as 26 m from the seafloor and a sandbar with height of 8 m above sea level with an area of 9 km2. The phenomenon recognition was confirmed by the four small closed contours known as small craters in the three different places. All the features and morphological changes in the seafloor were setting by the down drift of water from the mouth of Kelantan River continuously with different speed depending on river discharges and climate season.

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