Título del libro: Groundwater Contamination In Coastal Aquifers: Assessment And Management
Título del capítulo: GIS-based evaluation of groundwater quality and seawater intrusion assessment in a Coastal Region of Tiruchendur Taluk, Southern Tamil Nadu, India
PRIYADARSI DEBAJYOTI ROY;
Autores externos:
Idioma:
Año de publicación:
2022
Palabras clave:
Coastal groundwater; Geochemistry; Revelle index; South India; Tiruchendur; WHO
Resumen:
This research has been accomplished to assess the hydrochemical parameters for ameliorating the coastal groundwater quality of the agricultural area in the coastal region of Tiruchendur Taluk in the Thoothukudi district of Tamil Nadu, South India. Water supply in coastal waters around the world is often daunted by salinization due to seawater incursion and anthropological activities. In Tiruchendur Taluk of Thoothukudi district, agriculture and inland water supply depend on groundwater resources extracted from fully defined beds of medium sand and sandy loam. In order to distinguish the effects of seawater incursion and agriculture in the coastal aquifers of this 470km2 Taluk, 42 groundwater samples were collected and analyzed parameters such as physical (pH, EC, TDS) and chemical parameters of Ca, Mg, Na, K, Cl, HCO3, SO4, and NO3, respectively. The values of the analyzed parameters of groundwater samples were compared with World Health Organization (WHO) drinking standards. In this study, the basic hydrogeochemical properties (Piper plot and Gibbs plot) and the Revelle index methods used to examine the seawater incursion and status of the coastal aquatic system were followed. Gibbs plot indicates the evaporation process as a mechanism for controlling the groundwater system. Piper?s plot recounted that two salinities, primary salinity, and mixed water; dominate the study area, with the Revelle index identifying that 26% of samples are strongly affected by salinity or seawater incursion, respectively. The Piper?s plot delineated two types of water nature with primary saline nature and mixed waters being dominant in the study area, respectively Revelle index indicates that 26% of the samples are strongly affected by salinity or seawater intrusion. Our results indicate the need for integrated water management, and water resources in the Tiruchendur coastal area should be critically monitored to avoid further exploitation and further seawater inflows. © 2022 Elsevier Inc. All rights reserved.
Entidades citadas de la UNAM:
ISBN:
9780128243879
Editorial:
Elsevier Nombre de la publicación:
GIS-based evaluation of groundwater quality and seawater intrusion assessment in a Coastal Region of Tiruchendur Taluk, Southern Tamil Nadu, India
Página inicial:
155
Página final:
168
