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Geophysical studies to decipher the subsurface features in Joshimath, Uttarakhand, India
G. Gupta
Geophysical studies to decipher the subsurface features in Joshimath, Uttarakhand, India - P 519-527
Joshimath, a geologically fragile region in the Garhwal
Himalayas, is experiencing land subsidence due to natural and anthropogenic factors. A multi-instrumental
geophysical survey, including Electrical Resistivity
Tomography (ERT), magnetic susceptibility analysis,
and ground magnetic surveys, was conducted to assess
subsurface conditions. ERT results reveal weak zones
with water saturation and resistivity variations linked
to fractured and compact gneissic formations. Magnetic
susceptibility analysis highlights variations in mineral
concentration, while ground magnetic surveys identify
subsurface structures and lineaments associated with
instability. These findings provide critical insights for
hazard assessment and sustainable development in
Joshimath and other vulnerable Himalayan regions.
Electrical resistivity tomography
ground magnetic
magnetic susceptibility
lineaments
Joshimath
Geophysical studies to decipher the subsurface features in Joshimath, Uttarakhand, India - P 519-527
Joshimath, a geologically fragile region in the Garhwal
Himalayas, is experiencing land subsidence due to natural and anthropogenic factors. A multi-instrumental
geophysical survey, including Electrical Resistivity
Tomography (ERT), magnetic susceptibility analysis,
and ground magnetic surveys, was conducted to assess
subsurface conditions. ERT results reveal weak zones
with water saturation and resistivity variations linked
to fractured and compact gneissic formations. Magnetic
susceptibility analysis highlights variations in mineral
concentration, while ground magnetic surveys identify
subsurface structures and lineaments associated with
instability. These findings provide critical insights for
hazard assessment and sustainable development in
Joshimath and other vulnerable Himalayan regions.
Electrical resistivity tomography
ground magnetic
magnetic susceptibility
lineaments
Joshimath