Iman Rahimzadeh Kivi develops tool for CO2 storage resource estimation

📢 𝗡𝗲𝘄 𝗣𝘂𝗯𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗔𝗹𝗲𝗿𝘁! 📢 Thrilled to share our new paper in 𝘎𝘦𝘰𝘱𝘩𝘺𝘴𝘪𝘤𝘢𝘭 𝘙𝘦𝘴𝘦𝘢𝘳𝘤𝘩 𝘓𝘦𝘵𝘵𝘦𝘳𝘴! 🎉 We present a physics-informed, AI-driven method to better quantify uncertainties in how fractures conduct fluids. By capturing the impact of fracture roughness and structural variability, our approach takes a first step toward robust uncertainty propagation across scales. Check out our publication for the full story📄 Grateful to all my co-authors for the great collaboration! #MachineLearning #Uncertainty #Fractures #Roughness

📢 New publication alert! Thrilled to see our chapter published in the AGU Geophysical Monograph Series: Particulate Gravity Currents, edited by a super team of colleagues. 🌋 Our contribution focuses on pyroclastic density currents (PDCs) – highly dynamic flows generated by volcanic eruptions, lava dome collapse, or failure of existing deposits. Using powder flume experiments, we show how these currents, even when supplied steadily, become spontaneously unsteady, forming pulses that control their depositional behaviour. By testing a range of grain sizes, we explore the origins of graded and massive deposits in volcanic environments. Our findings suggest that widespread unsorted lapilli tuffs reflect rapid deposition from turbulent, mixed currents where granular segregation cannot keep pace with large-scale mixing. Huge thanks to Pete for leading & all co-authors and collaborators! 👉 You can find the book here below: #Volcanology #Sedimentology #ParticulateGravityCurrents

📘 NEW SCIENTIFIC ARTICLE 📢 Impact of Sharp Soil Interfaces on Solute Transport: Insights from a Reactive Tracer Test in a 2D Intermediate-Scale Experiment. 🗣 Reinaldo Guido González Subiabre, PhD - Oriol Bertran - Daniel Fernandez-Garcia Abstract: Understanding solute transport across interfaces between different porous materials is crucial for subsurface applications. Column tracer experiments have suggested solute accumulation at these interfaces. This effect cannot be explained by standard models based on Fickian flux continuity and the advection-dispersion equation. To analyze this phenomenon, we present reactive transport experiments in a 2D intermediate-scale horizontal tank to visualize and evaluate the spatiotemporal evolution of a solute plume crossing a sharp interface between coarse and fine materials. The plume results from the reaction of two fluid solutions entering the tank in parallel through inlet ports. The reaction product is analyzed using mixing and reaction metrics. Results show the reaction product encounters anomalous resistance crossing the coarse-to-fine (CF) interface. This effect is less pronounced in the fine-to-coarse (FC) transition. Contrary to one-dimensional results, this asymmetric resistance does not produce solute accumulation behind the interface. Instead, results show enhanced transverse spread of the reaction product in the coarse-to-fine transition with slow release in the fine material. A sudden decrease in the longitudinal concentration profile across the interface is observed. Mixing metrics show that as apparent transverse dispersivity increases approaching the interface in the CF transition, the scalar dissipation rate and total mass reacted increase, indicating the CF configuration promotes greater solute reactivity near the interface than the FC configuration. ➡️ https://lnkd.in/dqmFmCzq #Groundwater #Hydrogeology #ScientificResearch #NewArticle

#highlycited paper 📚Research on 3D Time-Lapse Electric Field Inversion Algorithm for Controlled Source Audio-Frequency #Magnetotelluric Method 🔗https://lnkd.in/gvbubRtF 👨🔬by Qilong Sun, Handong Tan, Wei Wan and Qixuan Hu 🏫China University of Geosciences #CSAMT #electricfield

Benjamin Busch from our chair at Karlsruhe Institute of Technology (KIT) received the Herrmann-Credner Award last week in #Göttingen. With this award, the Deutsche Geologische Gesellschaft German Geological Society, founded in 1848, honors the outstanding achievement of a young geologist holding a PhD and Habilitation or equivalent. In his laudatio, Prof. Dr. Martin Meschede highlighted Benjamin's innovative research on #structural #diagenesis. Benjamin Busch's research focuses on reactive processes in pores and fractures of clastic rocks and carbonates. This ranges from compaction and cementation of rocks based on grain scale processes, to predictive machine-learning tools to assess rock properties in reservoirs. His fundamental research results in applications covering grain scale to reservoir scale, such as #energy #storage or #CCS. Deutsche Geologische Gesellschaft German Geological Society KIT-Zentrum Klima und Umwelt BDG Berufsverband Deutscher Geowissenschaftler DGMK e.V.

The amazing Luis Villegas has published two linked papers in the Canadian Geotechnical Journal. This work was organised by Prof. Guillermo Narsilio Group from University of Melbourne and is titled: The effect of thermoactivated pile spacing on the thermo-mechanical response of energy soldier piled walls. It covers the use of a thermally activated embedded wall in sedimentary rocks. For the first time, we believe, it deals with a case study using anchors, among other novelties. 🔹 Paper 1 – Experimental study & initial numerical observations Field tests on a pilot energy wall showed that closer pile spacing increases thermal interaction between piles, leading to greater structural and ground deformations. This was the first time such behavior was observed in real site conditions, thanks to a unique test facility. 👉 Read here: https://lnkd.in/eKhYchkM 🔹 Paper 2 – Extended numerical investigation A comprehensive numerical study confirmed and expanded the experimental findings. It demonstrated how pile spacing can be optimized to balance energy performance with geotechnical safety, offering practical insights for future designs of thermoactive retaining walls. 👉 Read here: https://lnkd.in/eue2gyCF The work is part of the Joint PhD Programme covering energy topics between RWTH Aachen University and University of Melbourne. #EnergyGeostructures #ThermoactivePiles #Geothermal #Sustainability #Anchors

Farshad Jafarizadeh, Heriot-Watt University, was awarded funding in the UKCCSRC’s Flexible Funding 2024 call to investigate “Minimizing Environmental Impacts of CO₂ Storage Projects: Time-Lapse Monitoring of Fault Reactivation for Safe Sequestration.” Safe, large-scale Carbon Capture and Storage (CCS) requires not only tracking injected CO₂ plumes but also identifying early signs of geomechanical risks such as fault reactivation. In this project, Farshad combines the Geertsma and Okada models to predict 4D seismic time-shift signals associated with pressure build-up and small fault movements. The findings show that time-shift signals linked to fault slip are detectable, and that even typical acquisition methods (e.g., towed streamer) can capture these fault-movement signals. This highlights the role of 4D seismic as a powerful early-warning system for safe CO₂ storage. Read more here - https://lnkd.in/eCmvbg4H 🖼️ The image shows the workflow used for modelling 4D seismic time-shift signals from tectonic (fault-slip) events.

CSI Director Kenichi Soga co-authored a new book, “Fundamentals of Soil Behavior, Fourth Edition.” Co-authors include Professor Emeritus James K. Mitchell and Geosystems alumna Professor Catherine O'Sullivan. This book's balanced integration of scientific principles with practical applications has shaped graduate education and professional practice worldwide, while also inspiring major research directions in environmental geotechnics, energy geotechnics, ground improvement, soil–structure interaction and granular physics. Read more at https://lnkd.in/g6dnsFZH.

Do you trust damping values identified from measured responses? I probably don't! My PhD student, Yuanqi Zheng (co-supervised by Assoc. Prof. Jia Guo at Kyoto University and Dr. Renjie Shen at Jiangsu University of Science and Technology), has just published a paper that takes a critical look at the most widely used damping identification techniques. The study highlights their limitations and shows why many popular methods can be inadequate in practice. It also provides insights and recommendations for researchers and engineers working with system identification. https://lnkd.in/g84M2Agg #DampingIdentification #SystemIdentification #StructuralHealthMonitoring #StructuralDynamics #EigensystemRealizationAlgorithm #StochasticSubspaceIdentification #ContinuousWaveletTransform #EnhancedFrequencyDomainDecomposition #CivilEngineering #StructuralEngineering #CivilandEnvironmental #CEE #UCResearch

✨ Successfully participated in the Advanced Seismic Design for Resilient Structures workshop! The sessions were truly enriching, covering: Machine Learning Applications, Importance of Seismic Design and Strategies for Resilient Structures and Latest developments in earthquake-resistant design shared by eminent experts from the field. These insights connect closely with my research on the dynamics of granular media, particularly in exploring: 🌍 Harvesting energy during earthquakes using granular systems 🛡️ Seismic isolation through innovative granular base isolators 🛡️Data-driven and physics-informed seismic analyses of geomaterials Excited to integrate these learnings into ongoing and future work towards sustainable, resilient, and adaptive infrastructure. National Institute of Technology Rourkela #SeismicDesign #ResilientStructures #GranularMedia #EarthquakeEngineering #SustainableResearch