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Assessment of Saltwater Intrusion Using Geochemical Chloride Bicarbonate Ratio Method in Cagayan de Oro City, Philippines |
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| รหัสดีโอไอ | |
| Creator | 1. Geran John T. Flores 2. Gina C. Lacang |
| Title | Assessment of Saltwater Intrusion Using Geochemical Chloride Bicarbonate Ratio Method in Cagayan de Oro City, Philippines |
| Publisher | Thai Society of Higher Education Institutes on Environment |
| Publication Year | 2565 |
| Journal Title | EnvironmentAsia |
| Journal Vol. | 15 |
| Journal No. | 3 |
| Page no. | 48-57 |
| Keyword | Cagayan de Oro, Groundwater Quality, Hydrochemistry, Saltwater intrusion |
| URL Website | https://tshe.org/main/ea-journal-online |
| Website title | EnvironmentAsia Journal |
| ISSN | 1906-1714 |
| Abstract | Groundwater is a common source of water in developing countries. However, these resources experienced significant pollution from anthropogenic activities, which affects the ability of these resources to support life. In the Philippines, numerical modeling is ubiquitously associated with saltwater intrusion (SWI), while the geochemical approach was documented to be considered scarce. This study attempted to document SWI in Cagayan de Oro using the geochemical chloride-bicarbonate ratio method. Influence of tidal fluctuations SWI, as well as determining the factors that are associated with SWI were statistically determined. While most of the groundwater wells were still considered normal, data shows that 3 of these were already intruded by saltwater. Particularly, the western coastal realms of the city including barangay Bulua, and Kauswagan recorded SWI values that are 51% greater than the SWI average of the city. Tidal oscillation was similarly found to statistically affect SWI, where records on high tide events showed 23% greater than on low tide phenomena. This study further revealed that inherent topographic characteristics of a landscape affect the occurrence of SWI. In particular, areas characterized by flat slopes, low elevation, and in close proximity to the coast statistically showed positive responses to that of the SWI ratio, implying that SWI may likely ameliorate if a landscape may exhibit those aforementioned characteristics. Emphasis on creating effective monitoring strategies is recommended to ensure the sustainability of groundwater resources of the city. |
