Application of Integrated Geophysical Techniques to Map Groundwater Potential Zones and Geological Structures for Irrigation Purpose at “Humbo-Larena” Plain, Wolaita Zone, Ethiopia

Groundwater resource in the “Larena Plain” at the western margins of the Southern Main Ethiopian Rift (SMER) was investigated using integrated geophysical techniques—electrical resistivity and magnetic methods. The objective was to assess aquifer depth, extent, and geological controls in the study a...

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Bibliographic Details
Published in:International journal of geophysics 2024-01, Vol.2024
Main Author: Ayalew Lemma Teklemariam
Format: Article
Language:English
Subjects:
Agricultural production
Agriculture
Electrodes
Fault lines
Food security
Geological structures
Geology
Geophysical methods
Groundwater
Groundwater potential
Irrigation
Surface water
Volcanoes
Water resources
Water shortages
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Summary:Groundwater resource in the “Larena Plain” at the western margins of the Southern Main Ethiopian Rift (SMER) was investigated using integrated geophysical techniques—electrical resistivity and magnetic methods. The objective was to assess aquifer depth, extent, and geological controls in the study area. Vertical electrical sounding (VES) was employed to examine and map aquifer depth and lateral extension, while geological structures and lithological contacts influencing groundwater flow and accumulation were identified using magnetic surveys. Two-stage aquifers were identified: a deeper fractured ignimbrite and a volcanoclastic sediment aquifer covered by shallow weathered ignimbrite. The depths and distributions of these aquifers were mapped, with geological structures generally aligned in the NNE–SSW orientation. Understanding these geological structures and aquifer systems is crucial for effective groundwater management in the “Larena Plain,” providing valuable insights for regional hydrogeological studies.
ISSN:1687-885X
1687-8868
DOI:10.1155/ijge/5532471