Malaysian Journal of Analytical Sciences Vol 19 No 5 (2015): 1099 - 1108

 

 

 

THE INFLUENCE OF TIDAL ACTIVITIES ON HYDROLOGIC VARIABLES OF MARANG RIVER, TERENGGANU, MALAYSIA

 

     (Pengaruh Aktiviti Pasang Surut bagi Pembolehubah Hidrologi di Sungai Marang,

Terengganu, Malaysia)

 

Mohd Ekhwan Toriman^1,2, Muhammad Barzani Gasim¹*, Nur Hidayah Ariffin¹, Haniff Muhamad¹,

Norsyuhada Hairoma¹

 

¹East Coast Environmental Research Institute (ESERI),

Universiti Sultan Zainal Abidin, Gong Badak Campus, 21300 Kuala Terengganu, Terengganu, Malaysia

²School  of Social, Development and Environmental Studies, Faculty of Social Sciences and Humanities,

Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia

 

*Corresponding author: drbarzani@gmail.com

 

 

Received: 14 April 2015; Accepted: 9 July 2015

 

 

Abstract

A study was conducted at Marang River, Terengganu on determination of hydrological variation of Marang River at seven sampling stations. Sampling stations were selected along Marang River started from downstream to upstream. Each station was located 2km apart from each other. Sampling was done twice; the first sampling was in 13 November 2012 (rainy season) and was repeated for second sampling on 24 February 2013 (dry season). Hydrological measurements of river such as velocity, river width and river depth were measured by using specific equipment. River velocity was measured by using flow meter (model FP101), river width was measured by using a rangefinder (model Bushnell 20-0001) and river depth was measured by using depth meter. Primary data of hydrological measurements of Marang River were measured and analyzed for each sampling station. Overall, station 1 shows the highest readings for most hydrological variables at both water tides during the first and second samplings. Station 1 that was located at the Marang River estuary identified by higher hydrological variables due to seawater movement during high tide as compared to stations 7 which located at the upstream. During dry season hydrological variables were slightly decrease since low freshwater flow from the upstream due to less rainfall intensity.

 

Keywords: Marang River, hydrological variables, primary data, rainy and dry seasons

 

Abstrak

Satu kajian telah dijalankan di Sungai Marang, Terengganu  dalam penentuan pembolehubah hidrologi Sungai Marang di tujuh stesen pensampelan. Stesen pensampelan telah dipilih di sepanjang Sungai Marang bermula dari kawasan hilir ke hulu. Setiap stesen terletak 2km di antara satu dengan yang lain. Persampelan telah dilakukan sebanyak dua kali; pensampelan pertama adalah pada 13 November 2012 (musim hujan) dan diikuti persampelan kedua pada 24 Februari 2013 (musim kering). Pengukuran hidrologi sungai seperti halaju, lebar sungai dan kedalaman sungai diukur dengan menggunakan peralatan khas. Halaju sungai diukur dengan menggunakan meter alir (model FP101), lebar sungai diukur dengan menggunakan “rangefinder” (model Bushnell 20-0001) dan kedalaman sungai diukur dengan menggunakan rod meter. Data primer hasil daripada pengukuran hidrologi Sungai Marang diukur dan dianalisis untuk setiap stesen pensampelan. Hasilnya, stesen 1 menunjukkan bacaan tertinggi bagi kebanyakan pembolehubah hidrologi di kedua-dua keadaan pasang surut  dan semasa pensampelan pertama dan kedua. Stesen 1 yang terletak di muara Sungai Marang telah dikenal pasti mempunyai pembolehubah hidrologi yang tertinggi akibat pengaruh  pergerakan air pasang surut berbanding stesen 7 yang terletak di bahagian hulu. Semasa musim kering pembolehubah hidrologi sedikit berkurangan sebagai kesan aliran sungai dari hulu kerana kurangnya keamatan hujan.

 

Kata kunci: Sungai Marang, pembolehubah hidrologi, data primer, musim hujan dan kering

 

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