Your search found 2 records
1 Wetzelhuetter, C. (Ed.) 2013. Groundwater in the coastal zones of Asia-Pacific. Dordrecht, Netherlands: Springer. 382p. (Coastal Research Library Volume 7)
Coastal area ; Hydrogeology ; Models ; Salt water intrusion ; Aquifers ; Sea level ; Groundwater development ; Groundwater management ; Ecosystems ; NMR spectroscopy ; Geochemistry ; Chemical control ; Water quality ; Case studies / Asia-Pacific / China / USA / Hawaii / India / Australia / Thailand / Malaysia / New Zealand / United Arab Emirates / Hainan / Andhra Pradesh / West Bengal / Oahu / Eyre Peninsula / Songkhla / Uley Basin / Willunga Basin / Manukan Island / Kapas Island / Godavari Delta / Carnarvon / Gascoyne River / Yanzhoy River / Sanjiang River / Yanfeng River / Xi River / Wadi Ham Aquifer / Cook Islands / Pukapuka Atoll
(Location: IWMI HQ Call no: 551.457 G570 WET Record No: H046324)
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2 Aris, A. Z.; Praveena, S. M.; Isa, N. M. 2013. Groundwater composition and geochemical controls in small tropical islands of Malaysia: a comparative study. In Wetzelhuetter, C. (Ed.). Groundwater in the coastal zones of Asia-Pacific. Dordrecht, Netherlands: Springer. pp.229-246. (Coastal Research Library Volume 7)
Groundwater ; Geochemistry ; Chemical control ; Ions ; Aquifers ; Water use ; Salt water intrusion ; Ecotourism / Malaysia / Manukan Island / Kapas Island
(Location: IWMI HQ Call no: 551.457 G570 WET Record No: H046335)
Water usage for domestic and irrigation purposes differ greatly from country to country. Roughly, water use per capita increases with the increase of gross national income per capita. As speaking on national incomes, ecotourism activities in tropical countries play an important role in this field. Authorities on finance management focus on small islands as their greater contribution in ecotourism activities. Maintenance of small island ecology especially on groundwater has to be considered otherwise it hinders the growth of ecotourism development when it comes to over exploitation. Kapas Island and Manukan Island in Malaysia are among the islands that are highly developed for the ecotourism. Hence, unintentionally the groundwater in small islands is exposed to natural and manmade interference. A comparative study of these islands was done to clarify the sources of interference in the groundwater aquifer. An attempt to identify the hydrogeochemical processes in these small islands that accompany with current and past intrusion of seawater was made using the analyses on groundwater chemistry, saturation indices and ionic ratios. In addition of the major chemical compositions, analyses gives two different types of water, saturation index also indicates two different processes (saturation and dissolution) happened in the islands. Manukan Island tends to have Na-Cl water type and most of the groundwater samples were in precipitation condition with respect to carbonate minerals. Disparate to Kapas Island, it has Ca-HCO3 water type and experienced dissolution process in most groundwater samples. The results using ionic ratios were demonstrated to delineate the seawater intrusion process, which includes of Mg/Ca, Na/Cl, Na/K, SO4/Cl, Cl/HCO3 and Ca/(HCO3 + SO4). Comparison of ions derivation also shows two different major groups representing the islands. Other processes that related in this study were the ions exchanges and mineralization.
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