Institute of Geophysics Polish Academy of Sciences

A 3D Finite-Element Workflow for Mapping Earthquake Nucleation Tendency Under Tectonic Loading in Embedded Frictional Fault Systems

Abstract Dynamic-rupture simulations commonly prescribe rupture initiation, which complicates assessment of where instability would preferentially localize for a given fault geometry and tectonic loading. We present a 3D finite-element workflow that maps relative nucleation tende...

Listening to Tsunami Waves Induced by Glacier Calving

Abstract Processes at the ice–ocean interface play a central role in regulating the stability of marine‐terminating glaciers and ice sheets and drive ocean freshening and mixing. Iceberg calving—a mechanical loss of ice—generates ocean waves and promotes water‐mass exchange in gl...

A new balloon-borne system for measuring the vertical variability of aerosol optical properties using low-cost sensors

This study presents a newly developed balloon-borne AeroSonde system equipped with calibrated low-cost optical particulate matter sensors (SPS30) for vertically resolved aerosol optical measurements. Calibration of the sensors against reference instruments (Aurora 4000 nephelomet...

Fate of post-blast residue in soils from an armed conflict zone determined by magnetic, microbiological, and ecotoxicological assessments

Weapon detonations generate substantial quantities of post-blast residue (PBR), which contributes iron-rich particles to soils. After deposition, these residues undergo redox transformations that produce bioavailable iron compounds, potentially increasing phytotoxic risks to agri...

Impact of meteorological and oceanographic conditions on the state of sea ice in Hornsund, Svalbard over 23 years

Abstract. Sea ice in fjords affects local hydrography, ecosystems, glacier stability and coastal erosion. The full archive of historical SAR imagery at ∼50 m resolution (Envisat ASAR, RADARSAT-2 and Sentinel-1) capturing the Hornsund fjord, Svalbard was used to create an unpreced...

Reverse Time Migration with Modified Nearly Analytical Discretization: Efficient Large-Scale High-Resolution Imaging and Aliasing Suppression

Abstract Reverse time migration (RTM) requires numerically solving the partial differential wave equation because analytical solutions are infeasible. A significant challenge in numerical methods arises from inaccuracies in derivatives approximation, making the numerical wave vel...

Field demonstration and integrated productivity-economics assessment of multi-lateral geothermal wells enabled by directional steel shot drilling

This study explores the potential of multi-lateral slim-hole drilling to enhance reservoir access and connectivity in fractured geothermal reservoirs. At the core of this work is Directional Steel Shot Drilling (DSSD), a technology that combines conventional mechanical drilling w...

Quantitative Assessment of Se(p,xn) Routes to Medical Bromine Radioisotopes

Abstract This study investigates proton-induced reactions on enriched selenium targets, focusing on the production of bromine radioisotopes, which are of significant medical relevance for both diagnostic imaging and therapeutic applications. The study employs Monte Carlo samples...