An overview of a highly versatile forward and stable inverse algorithm for airborne, ground-based and borehole electromagnetic and electric data

E Auken, AV Christiansen, C Kirkegaard… - Exploration …, 2015 - Taylor & Francis
We present an overview of a mature, robust and general algorithm providing a single
framework for the inversion of most electromagnetic and electrical data types and instrument …

A review of helicopter‐borne electromagnetic methods for groundwater exploration

B Siemon, AV Christiansen… - Near Surface Geophysics, 2009 - Wiley Online Library
For about three decades, airborne electromagnetic (AEM) systems have been used for
groundwater exploration purposes. Airborne systems are appropriate for large‐scale and …

[HTML][HTML] Deep groundwater and potential subsurface habitats beneath an Antarctic dry valley

JA Mikucki, E Auken, S Tulaczyk, RA Virginia… - Nature …, 2015 - nature.com
The occurrence of groundwater in Antarctica, particularly in the ice-free regions and along
the coastal margins is poorly understood. Here we use an airborne transient …

One-dimensional deep learning inversion of electromagnetic induction data using convolutional neural network

D Moghadas - Geophysical Journal International, 2020 - academic.oup.com
Conventional geophysical inversion techniques suffer from several limitations including
computational cost, nonlinearity, non-uniqueness and dimensionality of the inverse problem …

Development of the inversion method for transient electromagnetic data

G Xue, H Li, Y He, J Xue, X Wu - IEEE Access, 2020 - ieeexplore.ieee.org
Transient electromagnetic method (TEM) is a geophysical tool to obtain resistivity
distribution in the subsurface. Combining with the resistivity property of typical rocks, the …

Assessing impacts of climate change, sea level rise, and drainage canals on saltwater intrusion to coastal aquifer

P Rasmussen, TO Sonnenborg… - Hydrology and Earth …, 2013 - hess.copernicus.org
Groundwater abstraction from coastal aquifers is vulnerable to climate change and sea level
rise because both may potentially impact saltwater intrusion and hence groundwater quality …

A review of airborne electromagnetic methods with focus on geotechnical and hydrological applications from 2007 to 2017

E Auken, T Boesen, AV Christiansen - Advances in geophysics, 2017 - Elsevier
The purpose of this review is to report the major advancements that have been made within
the area of airborne electromagnetics (AEM) between 2007 and 2017, with a focus on …

Sharp spatially constrained inversion with applications to transient electromagnetic data

G Vignoli, G Fiandaca, AV Christiansen… - Geophysical …, 2015 - earthdoc.org
Time‐domain electromagnetic data are conveniently inverted by using smoothly varying 1D
models with fixed vertical discretization. The vertical smoothness of the obtained models …

[HTML][HTML] Large scale mapping of fractures and groundwater pathways in crystalline hardrock by AEM

S Chandra, E Auken, PK Maurya, S Ahmed… - Scientific Reports, 2019 - nature.com
In hardrocks that cover about 20% of the Earth's surface, it is difficult to locate steady sources
for groundwater due to inadequate understanding of the fracture networks. A comprehensive …

[HTML][HTML] 3D geological modelling of a complex buried-valley network delineated from borehole and AEM data

AS Høyer, F Jørgensen, PBE Sandersen… - Journal of Applied …, 2015 - Elsevier
Buried tunnel valleys are common features in formerly glaciated areas, and where present,
they are very important for the groundwater recharge and flow. Delineation of the structures …