This paper presents the design and development of the Snow Terrain and Mobility Evaluation Tool (STMET), a multipurpose system equipped with electronic sensors and an alarm mechanism. STMET collects key snow and soil parameters to assess trafficability and avalanche risk, enhancing safety and mobility in challenging terrains. It offers a new innovative alternative to traditional tools such as cone penetrometers, ramsondes and the SnowMicroPen.

Based on a case study, we analyzed data from two pairs of conjugate stations to compare continuous Pc3 pulsations. Using Fourier and wavelet transform techniques, we identified similar pulsations at both locations; however, amplitudes were higher in the South Atlantic Magnetic Anomaly (SAMA) region. This enhancement may be linked to the unique conditions of the region, where energetic particles interact with both the magnetosphere and the ionosphere.

The effect of lightning strikes on the data with increasing distance, intensity and ground conductivity shows that higher-intensity strikes has had an impact of the data and instruments. It is crucial to determine the location and configuration where the installation can avoid the effects of groundwater fluctuations as well as lightning strikes. The susceptibility model, along with conductivity information, is used to make a selection of a new sites for trial measurements.

A new magnetic observatory has been established on La Réunion Island in the Indian Ocean. This isolated observatory serves to monitor the evolution of the magnetic field in that region. It is also useful for large-scale modelling of the core field and other contributions to the geomagnetic field. The vector magnetic field components are measured every second, transmitted every 5 min to the Institut de physique du globe de Paris, and made immediately available to users (see www.bcmt.fr).

We developed a correction model based on laboratory data, taking into account elements such as fluid density and viscosity. Our model showed an ideal accuracy and outperformed other models. When applied in real situations, it significantly reduced the differences in calculated stresses for different fracturing fluids.

We constructed an easy-to-use, open-source method for mapping minerals in rock thin sections. We implemented the method within the geographical information system QGIS and the Orfeo ToolBox plugin using random forest image classification on scanning electron microscope data. We applied the method to 14 rock thin sections. Mineral abundance estimates from our method compare favorably to previously published estimates, and 96 % spatially and categorically agree with manually derived mineral maps.

The Quantum Geographic Information System (QGIS) Sentinel Vegetation Indices (QSVI) plugin is an efficient, user-friendly tool designed to calculate key environmental remote sensing indices. Developed using a Python library within the QGIS software, QSVI significantly reduces computation time, exceeding other popular GIS applications. This study demonstrates its effectiveness in processing large datasets, offering a cost-effective solution for environmental monitoring and analysis, which is particularly valuable in educational settings.

The Modular Aquatic Robotic Platform–Freiberg (MARP-FG) is an autonomous catamaran designed to improve water monitoring by reducing human-related biases. It supports customizable sensors for water profiling, 3D basin mapping, and greenhouse gas flux measurements. Tested in Amazonian and European waters, MARP-FG showed precise navigation and reliable data collection under challenging weather, enhancing long-term, automated aquatic ecosystem monitoring.

In the field of marine controlled-source electromagnetic (MCSEM) systems, the evident issue of heating caused by the demand for high power was observed during previous marine experiments, where devices and cables were damaged due to overheating. Therefore, the idea was conceived to design a non-contact temperature measurement system tailored specifically to MCSEM systems, with the capacity to seamlessly adapt to the existing hardware conditions at sea.