In the field of Marine Controlled-source Electromagnetic (MCSEM), 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 for MCSEM, with the capacity to seamlessly adapt to the existing hardware conditions at sea.

The increasing impact of climate change and human activities on greenhouse gas emissions highlights the need for effective monitoring, especially from the soil. Our design introduces a low-cost solution for measuring soil gas flux that is adaptable to various environments. Additionally, we propose a novel method for ensuring data quality before deploying these systems in the field.

A new magnetic observatory has been set on La Réunion island in the Indian Ocean. This observatory is isolated and serves for monitoring the evolution of the magnetic field in that region. It is also particularly useful for large scale modelling of the core field and other contributions to the geomagnetic field. The magnetic field strength and direction are measured every second, transmitted every 5 minutes to IPGP main site and made immediately available to users (see www.bcmt.fr).

We analyzed data from two pairs of conjugate stations to compare Pc3 pulsations. Studies on Pc3 pulsations help understand energy transfer between the solar wind and magnetosphere. Using Fourier and wavelet transform techniques, we found similar pulsations at both locations, but amplitudes were higher in the SAMA region. This increase may be linked to unique conditions in the SAMA, where energetic particles interact with the magnetosphere and ionosphere.

Humidity sensors that function under extreme conditions are needed in experimental chambers as well as for humidity measurements on Mars. Such a sensor was already used in a chamber at the German Aerospace Center and is well characterized, however this sensor is no longer in production and has been replaced by a new generation, requiring verification of the new sensor under extreme conditions. The results show that the new sensor is suitable for measurements under Martian atmospheric conditions.

We present a method to optimize the number and placement of temperature sensors in the borehole for borehole thermometry. Based on heat transfer model simulations, a greedy algorithm chooses sensor locations that minimize sampling errors. Applications in Antarctic and Greenland boreholes show this method outperforms traditional linear and exponential spacing, reducing errors up to tenfold. This approach offers an efficient, cost-effective solution to improve subsurface temperature monitoring.