scholarly journals Atmospheric Iron and Aluminium Deposition and Sea-Surface Dissolved Iron and Aluminium Concentrations in the South China Sea off Malaysia Borneo (Sarawak Waters)

2021 ◽  
Vol 11 (2) ◽  
pp. 76-87
Author(s):  
Farah Akmal Idrus ◽  
Khairul Nizam Mohamed ◽  
Nur Syazwani Abdul Rahim ◽  
Melissa Dennis Chong

South China Sea (SCS) is an oligotrophic sea which usually receives low nutrients supply. However, massive atmospheric dust input was occurred during the haze event in Southeast Asia for almost every year. The input of dissolved iron (DFe) and dissolved aluminium (DAl) from dust and nearby land into SCS off Sarawak Borneo region during the worst haze event in 2015 of the Southeast Asia were investigated. The estimation dust deposition during this study was 0.162 mg/m2/yr. The atmospheric fluxes of total Fe and total Al at the offshore Sarawak waters were 0.611 µmol/m2/yr and 2.03 µmol/m2/yr, respectively, where the readily available dissolved Fe and Al from the dust were 0.11 µmol/m2/yr (DFe) and 0.31 µmol/m2/yr (DAl). Fe has higher solubility (17.78%) than Al (15.21%). The lateral fluxes (e.g. from the nearby land) were 37.08 nmol/m2/yr (DFe) and 125 nmol/m2/yr (DAl), with strong Fe organic ligand class L1 (log K:22.43 – 24.33). High concentrations of DFe and DAl at the surface water of the offshore region, coincided with high concentration of macronutrients due to the prevailing south-westerly winds originated from the west Kalimantan. Low residence times, ~0.92 (DFe) and ~1.31 (DAl) years, corresponded well with DAlexcess in surface seawater due to biological utilization of DFe. Future works emphasize on natural organic Fe(III) ligands and phytoplankton study are needed for better understanding on biogeochemistry of Fe and Al at SCS off Malaysia Borneo.

Sedimentology ◽  
2018 ◽  
Vol 65 (7) ◽  
pp. 2468-2505 ◽  
Author(s):  
Daniel S. Collins ◽  
Alexandros Avdis ◽  
Peter A. Allison ◽  
Howard D. Johnson ◽  
Jon Hill ◽  
...  

Author(s):  
Shengping Qian ◽  
Esteban Gazel ◽  
Alexander R. L. Nichols ◽  
Hao Cheng ◽  
Le Zhang ◽  
...  

Author(s):  
STEPHEN G. HAW

AbstractThe interpretation of history is often a complex task. All too often, sources are misinterpreted because of historians’ preconceptions. This article takes issue with one such misinterpretation, the anachronistic view that the Strait of Melaka has been the principal sea route connecting the Indian Ocean with the South China Sea throughout most of recorded history. Beginning at a period when an overland journey across the Malay Peninsula was an essential link in the routes connecting South, Southeast and East Asia, it is suggested that the first entirely maritime itinerary to be used regularly passed through the Sunda Strait. Changes in itineraries affected the fortunes of the states of Southeast Asia, particularly of Funan and Srivijaya.


2017 ◽  
Vol 32 (2) ◽  
pp. 364-372 ◽  
Author(s):  
Arif Havas Oegroseno

This article considers the prospects for cooperation between the claimants in the South China Sea dispute. A number of reasons are provided to explain why the likelihood of resolving the dispute over territorial sovereignty is slim. Nonetheless, such disagreements need not stand in the way of managing the South China Sea dispute. In this regard, inspiration is sought in other practices in Southeast Asia where joint activities are conducted in areas where not all maritime boundaries and sovereignty disputes have been settled. These practices are (1) the management of the Straits of Malacca and Singapore, and (2) the Coral Triangle Initiative. The author suggests that China and the asean member states should gain first-hand information about these practices with a view to establishing comparable joint activities in the South China Sea.


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