Real-time setup to measure radon emission during rock deformation: implications for geochemical surveillance
Summary: We present a new real-time experimental setup for analysing in continuum radon emissions over variable stress-strain regimes. The setup consists of a radon accumulation chamber that can host large cylindrical rock samples and is connected to a RAD7 radon monitor. The radon signal is enhanced using a heating system. The accumulation chamber is then placed into a uniaxial testing apparatus that allows obtaining a variety of deformation conditions.
Geosci. Instrum. Method. Data Syst., 4, 111-119, doi:10.5194/gi-4-111-2015, 2015
Simple, affordable, and sustainable borehole observatories for complex monitoring objectives
Summary: Seafloor drill rigs are remotely operated systems that provide a cost-effective means to recover sedimentary records of the upper sub-seafloor deposits. Recent increases in their payload included downhole logging tools or autoclave coring systems. Here we report on another milestone in using seafloor rigs: the development and installation of shallow borehole observatories for the MARUM-MeBo seafloor drill developed at University of Bremen, Germany.
Geosci. Instrum. Method. Data Syst., 4, 99-109, doi:10.5194/gi-4-99-2015, 2015
A high dynamic radiation measurement instrument: the Bolometric Oscillation Sensor (BOS)
Summary: The PICARD Bolometric Oscillation Sensor experiment was the first experiment to simultaneously measure the solar and terrestrial radiation with a single detector. It is a powerful tool for exploring thermal properties of a planetary body. The sensor has high repeatability due to its simplified design. Thus, it has the potential to payload on several microsatellites or even CubeSats and form a consultation array to track small energy exchange of the planet.
Geosci. Instrum. Method. Data Syst., 4, 89-98, doi:10.5194/gi-4-89-2015, 2015
High-frequency performance of electric field sensors aboard the RESONANCE satellite
Summary: We present the high-frequency properties of the eight electric field sensors as proposed to be launched on the spacecraft “RESONANCE” in the near future. Due to the close proximity of the conducting spacecraft body, the sensors (antennas) have complex receiving features and need to be well understood for an optimal mission and spacecraft design. In particular techniques like wave polarization analysis and incident direction finding depend crucially on the presented antenna characteristics.
Geosci. Instrum. Method. Data Syst., 4, 81-88, doi:10.5194/gi-4-81-2015, 2015