There have been major improvements in instrumentation, field survey design and data
inversion techniques for the geoelectrical method over the past 25 years. Multi-electrode …

Details of Earth's shallow subsurface—a key component of the critical zone (CZ)—are
largely obscured because making direct observations with sufficient density to capture …

An automated multiresidue method consisting of an online solid-phase extraction step
coupled to a high performance liquid chromatography–tandem mass spectrometer (online …

Sinkholes caused by natural or anthropogenic factors pose as potential safety hazards in
urban areas. From April to May 2019, six consecutive ground collapses occurred in Beihuan …

Interactions between groundwater (GW) and surface water (SW) have important implications
for water quantity, water quality, and ecological health. The subsurface region proximal to …

Electrical geophysical methods, including electrical resistivity, time‐domain induced
polarization, and complex resistivity, have become commonly used to image the near …

Environmental tracing is a direct way to characterize aquifers, evaluate the solute transfer
parameter in underground reservoirs, and track contamination. By performing multitracer …

Surface-based ground penetrating radar (GPR) and electrical resistance tomography (ERT)
are common tools for aquifer characterization, because both methods provide data that are …

In-situ chemical oxidation (ISCO) with persulfate, an electrically conductive oxidant, provides
a powerful signal for noninvasive geophysical techniques to characterize the remediation …

Surface-downhole electrical resistivity tomography (SD-ERT) surveys were repeatedly
carried out to image CO 2 injected at the pilot storage Ketzin, Germany. The experimental …