Inner Water Characteristics of Anambas Island; Riau Province-Indonesia

Noir P. Purba, Jaya Kelvin, Riani Widiarti, Nurfitri Syadiah

Abstract: Anambas archipelago which consists of 255 islands located in the southern South China Sea (sSCS) and parts of Riau province. This study aims to provide an initial overview of the Anambass water characteristics on East Monsoon (EM). Data was obtained from two primary surveys that conducted in 2012 and 2013. First survey collected a number of 20 stations which focused to the northeast region of Anambas that consists of Mengkian Island; Mandariau Island; and Penjalin Island. Second survey collected 16 stations which represented the whole inner water of Anambas. The depiction was done with primary data collection; calibration and data processing; visualization; and analysis. The results show that the Anambas water is the shallow one with the average depth of 40 meters. The tidal range is approximately 1.35 meters and the dominant ocean current is southward current that moves to Karimata Strait and Malacca Strait. The ocean current condition of Anambas is also affected by the water mass that originates from the South China Sea (SCS) ; Java Sea; and Malacca Strait. The other water properties were like ocean surface temperature (28-32.50C) ; absolute salinity (29-35 PSU) ; brightness (10-16 meters) ; pH (6.8-8.8 units) ; and dissolve oxygen (4.4-6.8 mg/L). The biological property such as the abundance of plankton varies and dominates by Thallasionema and shows significant correlation with the ocean current pattern.

Keywords: Anambas Archipelago, East Monsoon, Water Mass, Inner Water, Oceanographic Condition

How to Cite?: Noir P. Purba, Jaya Kelvin, Riani Widiarti, Nurfitri Syadiah, "Inner Water Characteristics of Anambas Island; Riau Province-Indonesia", Volume 3 Issue 6, June 2014, International Journal of Science and Research (IJSR), Pages: 889-893, https://www.ijsr.net/getabstract.php?paperid=2014136, DOI: https://dx.doi.org/10.21275/2014136