Electrical and electromagnetic (E&EM) methods for near-surface investigations have
undergone rapid improvements over the past few decades. Besides the traditional …

This paper presents a tutorial review of electrical and electromagnetic (herein collectively
called geoelectromagnetic) methods as applied in the search for natural resources. First, the …

The investigated roof region of a salt diapir in Hamburg, northern Germany, suffers sinkhole
activity that was accompanied lately by microseismic events in the Gross Flottbek quarter …

Non-invasive geophysical methods are often used for detecting near-surface defects and
monitoring seepage in river dykes or dams. Between 2008 and 2009, a series of …

As part of a program to evaluate the utility of integrated geoelectrical methods for subsurface
structural mapping and groundwater resource investigation in the semiarid eastern margin …

Electrical and electromagnetic methods are well suited for coastal aquifer studies because
of the large contrast in resistivity between fresh water‐bearing and salt water‐bearing …

The use of geophysical methods for hydrogeological investigations has, during the last two
decades, attracted much attention. The goal of a hydrogeological investigation is to construct …

The relatively new subdiscipline of environmental geophysics has grown enormously in the
last five years. The size and diversity of the field, and the associated literature, is such that it …

Introduction Electromagnetic methods have a special place in the arsenal of geophysical
tools available for environmental investigations. They owe their status to five factors. First …

Direct current (dc) resistivity methods use artificial sources of current to produce an electrical
potential field in the ground. In almost all resistivity methods, a current is introduced into the …