Session 1: Instrumentation, data acquisition and processing
Conveners: Anna Platz, Ikuko Fujii, and Pierre Wawrzyniak
This session solicits contributions on EM data processing, source field analysis, instrumentation, and field practice. We welcome contributions on all aspects of data processing, including theory and practical applications. Development and application of time lapse observations (monitoring) of transfer functions and other parameters as well as new approaches to estimation of transfer functions and their uncertainty can be presented here. We also solicit studies on source fields, whether controlled or uncontrolled. This includes characterization of external source spatial structure and temporal variability, novel (distributed) transmitter configurations, and effects of finite spatial-scale sources (natural and anthropogenic) on transfer functions. Contributions on new instrumentation and field practice and related methodological developments are also appropriate for this session. Studies of sensor fidelity either by noise level analysis or by field comparison with other sensors are appropriate. Sensors can include ohmic or capacitively coupled electrodes, magnetometers, and any other instruments whose inter-comparison with EM data demonstrates new insights.
Session 2: EM theory, modelling and Inversion
Conveners: Yoshiya Usui, Maria C. Manassero, and Max Moorkamp
The geo-electromagnetic phenomena are fundamentally governed by Maxwell's equations. This session covers all aspects of theory, modelling and inversion in which Maxwell's equations are applied to study the electric properties of the Earth. We invite contributions on advances in electromagnetic (EM) theory, analytic and numerical solutions, physical modelling, imaging and inversion algorithms, software implementations, as well as case studies related to the above topics. We further welcome methodological contributions, which solve integrated geoscientific problems or provide new insights into multi-disciplinary data integration, complex Earth medium modelling, 3D/4D inversion algorithms. Initiatives such as open source software, that benefit the community at large, and works that make good use of emerging technologies, like data mining, machine learning and cloud computing, are also warmly invited.
Session 3: EM methods for exploration (geothermal, mineral resources, etc.)
Conveners: Claudia Arango Galván, Matthew Comeau, and Perla Piña-Varas
This forum seeks to facilitate the presentation of methodological advancements, case studies, numerical modeling approaches, and field experiments to address current challenges in comprehending the Earth's subsurface using Electromagnetic (EM) methods applied to explore natural resources, environmental and engineering issues. Researchers and students are invited to submit abstracts highlighting the recent developments and case studies related to the role of EM induction in exploring minerals, oil and gas, groundwater and geothermal resources, since a sustainable characterization and utilization of resources necessitates a comprehensive understanding of the geological system and effective monitoring at every developmental stage. Additionally, contributions on various aspects of EM methods and their applications are appreciated, including those emphasizing their role in environmental and engineering applications, addressing data processing and interpretation of EM exploration techniques for lithological characterization and determining petrophysical and hydrophysical properties of rocks are also encouraged.
Session 4: Tectonics and geodynamics, including magmatism
Conveners: Hao Dong, Hiroshi Ichihara, and Duygu Kyan
Electromagnetic induction methods provide the essential information on the Earth’s electrical conductivity, which is sensitive to the presence of fluids, melts and conductive mineral phases. Modelling the electrical properties of the earth allows us to map temperature variations and to help understanding shallow and deep magmatic processes, phase transitions and mineralization, as well as the water circulation in the mantle. We invite EM studies in different tectonic settings, including active continent collision or subduction zones, divergent margins, stable tectonic settings and volcanic areas. Studies of different scales, from regional structural problems to global modelling of major geodynamic processes in the mantle and core of the Earth are all welcomed. We also encourage submission of multiparameter geophysical/petrological studies, in which electrical conductivity models are used alongside other geophysical methods to provide new insights into tectonics, magmatism and geodynamics.
Session 5: Monitoring: of GICs, environmental, tectonic and geomorphological hazards
Conveners: Juliane Hübert, César Castro, Graham Hill, and Kristin Pratscher
Natural hazards such as earthquakes, volcanoes, landslides and solar eruptions can occur without warning and cause damage to people’s health, homes and infrastructure. Geophysical techniques are widely used to improve the detection, understanding and forecasting of such hazards. In this session, we invite all contributions involving EM applications for assessing volcanic, environmental, geomorphological, tectonic and space weather hazards.
Session 6: Marine and airbone EM
Conveners: Shunguo Wang, Michael Becken, and Christine J. Chesley
This session focuses on the latest advancements and applications in marine and airborne electromagnetic (EM) geophysics considering both natural and controlled-source signals. These fields stand at the forefront of exploring the Earth's subsurface and interior, offering inspirations for using EM methods in both marine and terrestrial environments. Participants will present cutting-edge research, innovative methodologies, and case studies showcasing the application of marine and airborne EM geophysics into resource exploration, tectonophysics problems, environmental studies, geological mapping, geothermal studies, storage monitoring, etc. We invite abstracts that not only explore the newest algorithms, tools, and techniques in marine and airborne EM surveys to advance applications, but that also integrate these datasets with other geophysical methods (i.e. seismic, magnetics, gravity, and ground-penetrating radar data) for a more comprehensive understanding of subsurface features. This is a not-to-be-missed opportunity for EM geophysicists seeking to expand their knowledge, engage in valuable networking, and be inspired by the future directions of marine and airborne EM studies.
Session 7: Electrical rock properties: computer, laboratory and field experiments, including anisotropy
Conveners: Anna Marti and Jana H. Börner
The relationship between physical parameters obtained from geophysics and rock properties is fundamental to understand the composition and dynamics of the Earth and planetary bodies and to address applications for example in energy development or exploration of raw materials. More in particular, the link between electrical resistivity from outcrop/laboratory to lithospheric-asthenospheric scale is challenging (sampling procedure, local heterogeneity, anisotropy on multiple scales, reactive coupling between rocks and fluids, ...). Electrical anisotropy can occur on multiple spatial scales and in relation to the resolution power of electromagnetic data. Its signature can then be imprinted in electromagnetic data and needs to be taken into account. Studies on how to analyze and model anisotropy, combined with laboratory measurements, are crucial to distinguish anisotropy from other interpretations. A persistent future goal therefore is the further development of meaningful experiments and models that allow us to address these challenges. In this session, we invite studies related to rock and mineral resistivity as well as its anisotropy. We encourage novel approaches and combined methodologies using experimental, theoretical and numerical methods including machine learning techniques. Laboratory as well as field and numerical studies focusing on both Earth and planetary bodies are welcome.
Session 8: Global, planetary and source field studies
Conveners: Anne Neska, Takuto Minami, and Jakub Velímský
We solicit new contributions on induced electromagnetic fields at a planetary scale. We invite presentation of studies that shed light on the progress in our understanding of global electrical conductivity structures in the Earth's mantle. We also encourage contributions applying the EM induction methods to constrain the state of the Earth's oceans. Development of new methods of global forward and inverse modelling, use of new transfer functions, studies of source effects in transfer functions, joint inversion for ionospheric sources and mantle conductivity, and interpretation of satellite magnetic field data are welcome. New methods that incorporate space physics constraints on the sources of electromagnetic induction at periods relevant to the Earth's mantle conductivity structures are particularly welcome. We also call for studies dedicated to magnetism and induction on other planets.
Session 9: EM induction education and outreach (poster session only)
Convener: Ute Weckman
In addition to the advancement and application of electromagnetic induction science, members of IAGA Division VI play critical roles in education and outreach. In terms of education, this work may involve teaching undergraduate or graduate students, supervision of undergraduate or graduate research, or training new scientists how to use electromagnetic equipment. In terms of outreach, it may involve promoting large-scale electromagnetic projects to senior officials or other scientists, writing statements on the socioeconomic importance of electromagnetic induction studies, or providing entertaining visits to high school students. This session, the second of its kind at our electromagnetic workshops, is intended to collect posters highlighting novel, interesting, and/or important experiences from the teaching and outreach of electromagnetic induction. The sharing of ideas and information in these areas will help contribute to the overall public understanding of electromagnetic induction studies.