Andrei Swidinsky
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View article: Geoscientific Input Feature Selection for CNN-Driven Mineral Prospectivity Mapping
Geoscientific Input Feature Selection for CNN-Driven Mineral Prospectivity Mapping Open
In recent years, machine learning techniques such as convolutional neural networks have been used for mineral prospectivity mapping. Since a diverse range of geoscientific data is often available for training, it is computationally challen…
View article: Water-Alternating-Gas and CO2 Storage Optimization Using Time-Lapse Geophysical Monitoring and Deep Reinforcement Learning
Water-Alternating-Gas and CO2 Storage Optimization Using Time-Lapse Geophysical Monitoring and Deep Reinforcement Learning Open
This study presents a new approach for optimizing water-alternating-gas (WAG) injection strategies and CO2 storage using deep reinforcement learning (DRL), supported by time-lapse gravity monitoring. We tested two reinforcement learning (R…
View article: Interacting Immediate Neighbour Interpolation for Geoscientific Data
Interacting Immediate Neighbour Interpolation for Geoscientific Data Open
A diverse range of interpolation methods, including Kriging, spline/minimum curvature and radial basis function interpolation exist for interpolating spatially incomplete geoscientific data. Such methods use various spatial properties of t…
View article: Geoscientific Input Feature Selection for CNN-driven Mineral Prospectivity Mapping
Geoscientific Input Feature Selection for CNN-driven Mineral Prospectivity Mapping Open
In recent years, machine learning techniques such as convolutional neural networks have been used for mineral prospectivity mapping. Since a diverse range of geoscientific data are often available for training, it is computationally challe…
View article: Stochastic control of geological carbon storage operations using geophysical monitoring and deep reinforcement learning
Stochastic control of geological carbon storage operations using geophysical monitoring and deep reinforcement learning Open
View article: Machine Learning-based Mineral Prospectivity Mapping: Exploring the Role of Negative Training Labels to Enhance Predictive Models
Machine Learning-based Mineral Prospectivity Mapping: Exploring the Role of Negative Training Labels to Enhance Predictive Models Open
Mineral Prospectivity Mapping (MPM) is an important tool to identify areas with significant potential to host mineral deposits. Recent advancements in computational sciences, especially the advent of Machine Learning (ML), have enhanced MP…
View article: Issue Information
Issue Information Open
View article: Stochastic Control of Geological Carbon Storage Operations Using Geophysical Monitoring and Deep Reinforcement Learning
Stochastic Control of Geological Carbon Storage Operations Using Geophysical Monitoring and Deep Reinforcement Learning Open
View article: Developing a low-cost frequency-domain electromagnetic induction instrument
Developing a low-cost frequency-domain electromagnetic induction instrument Open
Recent advancements and the widespread availability of low-cost microcontrollers and electronic components have created new opportunities for developing and using low-cost, open-source instrumentation for near-surface geophysical investiga…
View article: Advances in electromagnetic imaging in the presence of well casings: algorithms and field experiments
Advances in electromagnetic imaging in the presence of well casings: algorithms and field experiments Open
<p>Controlled-Source Electromagnetic (CSEM) methods have the potential to be powerful geophysical tools for imaging and monitoring the distribution of electrically resistive fluids, such as freshwater aquifers, CO<sub>2</sub…
View article: Developing a low-cost frequency-domain electromagnetic induction instrument
Developing a low-cost frequency-domain electromagnetic induction instrument Open
Recent advancements and the widespread availability of low-cost microcontrollers and electronic components have created new opportunities for developing and using low-cost, open-source instrumentation for near-surface geophysical investiga…
View article: Development and validation of a low-cost direct current resistivity meter for humanitarian geophysics applications
Development and validation of a low-cost direct current resistivity meter for humanitarian geophysics applications Open
Insufficient access to safe drinking water is one of the most challenging global humanitarian issues. The development of low-cost microcontrollers and the widespread availability of cheap electronic components raise the possibility of deve…
View article: Inversion of 1D frequency- and time-domain electromagnetic data with convolutional neural networks
Inversion of 1D frequency- and time-domain electromagnetic data with convolutional neural networks Open
View article: IMAGING AHEAD OF TUNNEL BORING MACHINES WITH DC RESISTIVITY
IMAGING AHEAD OF TUNNEL BORING MACHINES WITH DC RESISTIVITY Open
UTC-UTI Final Research Report 002: "IMAGING AHEAD OF TUNNEL BORING MACHINES WITH DC RESISTIVITY"
View article: Step‐on versus step‐off signals in time‐domain controlled source electromagnetic methods using a grounded electric dipole
Step‐on versus step‐off signals in time‐domain controlled source electromagnetic methods using a grounded electric dipole Open
The time‐domain controlled source electromagnetic method is a geophysical prospecting tool applied to image the subsurface resistivity distribution on land and in the marine environment. In its most general set‐up, a square‐wave current is…
View article: Inversion of 1D frequency- and time-domain electromagnetic data with\n convolutional neural networks
Inversion of 1D frequency- and time-domain electromagnetic data with\n convolutional neural networks Open
Inversion of electromagnetic data finds applications in many areas of\ngeophysics. The inverse problem is commonly solved with either deterministic\noptimization methods (such as the nonlinear conjugate gradient or Gauss-Newton)\nwhich are…
View article: INDEX
INDEX Open
current (AC) resistance, 181-182 Altitude Adjusted Corrected Geomagnetic system, 68 Ampere's law, 32, 80 Animikie Basin (AB) in Minnesota, 142 Appalachians (APPL), 138, 139 Archean Superior Craton (SC) in Minnesota, 142 Archie's law, 122 a…
View article: A first application of a marine inductive source electromagnetic configuration with remote electric dipole receivers: Palinuro Seamount, Tyrrhenian Sea
A first application of a marine inductive source electromagnetic configuration with remote electric dipole receivers: Palinuro Seamount, Tyrrhenian Sea Open
We study a new marine electromagnetic configuration that consists of a ship‐towed inductive source transmitter and a series of remote electric dipole receivers placed on the seafloor. The approach was tested at the Palinuro Seamount in the…
View article: Geoelectric hazard assessment: the differences of geoelectric responses during magnetic storms within common physiographic zones
Geoelectric hazard assessment: the differences of geoelectric responses during magnetic storms within common physiographic zones Open
View article: A self-potential investigation of submarine massive sulfides: Palinuro Seamount, Tyrrhenian Sea
A self-potential investigation of submarine massive sulfides: Palinuro Seamount, Tyrrhenian Sea Open
The self-potential (SP) method detects naturally occurring electric fields, which may be produced by electrically conductive mineral deposits, such as massive sulfides. Recently, there has been increasing interest in applying this method i…
View article: On electric fields produced by inductive sources on the seafloor
On electric fields produced by inductive sources on the seafloor Open
The transient electromagnetic (TEM) method has recently been proposed as a tool for mineral exploration on the seafloor. Similar to airborne TEM surveys conducted on land, marine TEM systems can use a concentric or coincident wire-loop tra…
View article: On coincident loop transient electromagnetic induction logging
On coincident loop transient electromagnetic induction logging Open
Coincident loop transient induction wireline logging is examined as the borehole analog of the well-known land and airborne time-domain electromagnetic (EM) method. The concept of whole-space late-time apparent resistivity is modified from…
View article: Exploration of Seafloor Massive Sulfide Deposits with the Novel EM Induction System MARTEMIS
Exploration of Seafloor Massive Sulfide Deposits with the Novel EM Induction System MARTEMIS Open
View article: Three‐dimensional controlled‐source electromagnetic modelling with a well casing as a grounded source: a hybrid method of moments and finite element scheme
Three‐dimensional controlled‐source electromagnetic modelling with a well casing as a grounded source: a hybrid method of moments and finite element scheme Open
Steel well casings in or near a hydrocarbon reservoir can be used as source electrodes in time‐lapse monitoring using grounded line electromagnetic methods. A requisite component of carrying out such monitoring is the capability to numeric…
View article: Observatory geoelectric fields induced in a two-layer lithosphere during magnetic storms
Observatory geoelectric fields induced in a two-layer lithosphere during magnetic storms Open
We report on the development and validation of an algorithm for estimating geoelectric fields induced in the lithosphere beneath an observatory during a magnetic storm. To accommodate induction in three-dimensional lithospheric electrical …
View article: On guided versus deflected fields in controlled-source electromagnetics
On guided versus deflected fields in controlled-source electromagnetics Open
The detection of electrically resistive targets in applied geophysics is of interest to the hydrocarbon, mining and geotechnical industries. Elongated thin resistive bodies have been extensively studied in the context of offshore hydrocarb…
View article: The use of rotational invariants for the interpretation of marine CSEM data with a case study from the North Alex mud volcano, West Nile Delta
The use of rotational invariants for the interpretation of marine CSEM data with a case study from the North Alex mud volcano, West Nile Delta Open
Submarine mud volcanos at the seafloor are surface expressions of fluid flow systems within the seafloor. Since the electrical resistivity of the seafloor is mainly determined by the amount and characteristics of fluids contained within th…
View article: Rapid resistivity imaging for marine controlled-source electromagnetic surveys with two transmitter polarizations: An application to the North Alex mud volcano, West Nile Delta
Rapid resistivity imaging for marine controlled-source electromagnetic surveys with two transmitter polarizations: An application to the North Alex mud volcano, West Nile Delta Open
To image the internal resistivity structure of the North Alex mud volcano offshore Egypt, the marine electromagnetics group at the Helmholtz Centre for Ocean Research Kiel (GEOMAR) developed and conducted a novel transient marine controlle…
View article: SO227 Electromagnetic and seismic investigation of methane hydrates offshore Taiwan - The Taiflux Experiment
SO227 Electromagnetic and seismic investigation of methane hydrates offshore Taiwan - The Taiflux Experiment Open