Scholarlink

<p>This study investigates groundwater potential using geophysical techniques in the Srivaikundam region, utilizing Vertical Electrical Sounding (VES) and groundwater modeling techniques to assess subsurface lithology, aquifer characteristics, and groundwater availability. A total of 40 VES profiles were conducted across various locations, revealing substantial spatial variations in apparent resistivity values. Apparent resistivity values revealed significant spatial variation, with layer 1 ranging from 3.9 Ω.m (VES 37) to 2637 Ω.m (VES 17), layer 2 from 0.94 Ω.m (VES 11) to 1719 Ω.m (VES 3), and layer 3 from 9.4 Ω.m (VES 38) to 1000 Ω.m (VES 17). Low resistivity zones suggest clay-rich or water-saturated formations, while high resistivity values indicate hard rock or compacted sediments. Subsurface thicknesses varied from 1.31&#xa0;m to 76&#xa0;m, highlighting the region lithological complexity. The analysis of Dar-Zarrouk parameters, including longitudinal conductance and transverse resistance, revealed spatial variations in groundwater potential, categorizing the region into low, medium, and high potential areas. The high-potential zones, such as VES 7 (Sivthaiyappuram) and VES 28 (Vadavallanadu), were found to have well-defined aquifers, while low-potential zones like VES 15 (Srivaikundam) exhibited conductive layers. 3D GMS modeling revealed groundwater-bearing formations such as loose sand (20%), weathered rock (18%), and fractured rock (1%). Validation through RMSE and MAE analyses confirmed high model accuracy (R² = 0.991), with predicted resistivity closely aligning with field values. This study provides essential data for sustainable groundwater management, aquifer protection, and informed decision-making in the region water resource management.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Hydrogeophysical characterization of groundwater and subsurface geology using vertical electrical sounding and GMS modeling in Srivaikundam region, Southern Tamil Nadu

  • 期刊论文

  • 发表日期：

    2025年7月16日

查看全文
  • S. Richard Abishek,
  • A. Antony Ravindran,
  • V. Stephen Pitchaimani,
  • S. Kaliraj,
  • J. Vinoth Kingston,
  • A. Antony Alosanai Promilton,
  • R. J. Jerin Joe

摘要

This study investigates groundwater potential using geophysical techniques in the Srivaikundam region, utilizing Vertical Electrical Sounding (VES) and groundwater modeling techniques to assess subsurface lithology, aquifer characteristics, and groundwater availability. A total of 40 VES profiles were conducted across various locations, revealing substantial spatial variations in apparent resistivity values. Apparent resistivity values revealed significant spatial variation, with layer 1 ranging from 3.9 Ω.m (VES 37) to 2637 Ω.m (VES 17), layer 2 from 0.94 Ω.m (VES 11) to 1719 Ω.m (VES 3), and layer 3 from 9.4 Ω.m (VES 38) to 1000 Ω.m (VES 17). Low resistivity zones suggest clay-rich or water-saturated formations, while high resistivity values indicate hard rock or compacted sediments. Subsurface thicknesses varied from 1.31 m to 76 m, highlighting the region lithological complexity. The analysis of Dar-Zarrouk parameters, including longitudinal conductance and transverse resistance, revealed spatial variations in groundwater potential, categorizing the region into low, medium, and high potential areas. The high-potential zones, such as VES 7 (Sivthaiyappuram) and VES 28 (Vadavallanadu), were found to have well-defined aquifers, while low-potential zones like VES 15 (Srivaikundam) exhibited conductive layers. 3D GMS modeling revealed groundwater-bearing formations such as loose sand (20%), weathered rock (18%), and fractured rock (1%). Validation through RMSE and MAE analyses confirmed high model accuracy (R² = 0.991), with predicted resistivity closely aligning with field values. This study provides essential data for sustainable groundwater management, aquifer protection, and informed decision-making in the region water resource management.