Dielectric Spectroscopy Measurements of Saline Aqueous Solutions in the VHF-UHF Bands: Toward a Dielectric Model of Icy Satellite Water Reservoirs

Revising the Basal Permittivity of the South Polar Layered Deposits of Mars With a Surficial Dust Cover

“…It stands out that whether the dust cover permittivity is higher or lower than the one for the underlying bulk ice might be a determinant question to discriminate between the wet and the dry hypotheses for the base of the SPLD at the location of the bright reflector. If ɛ 2′ > ɛ 2 , then the wet character of the base would be unambiguous as the permittivity quickly climbs closer to values characteristic of bulk liquid water (ɛ ≈ 80 (Brouet et al, 2018)) that would be inaccessible to dry geologic materials, even at warmer Terrestrial temperatures. Conversely, ɛ 2′ < ɛ 2 could lower the inverted basal permittivity toward materials more compatible with dry mixture of conductive materials (Bierson et al, 2021;I.…”

VIS spectroscopy of NaCl – water ice mixtures irradiated with 1 and 5 keV electrons under Europa's conditions: Formation of colour centres and Na colloids

“…These devices have already been used for the production of analogues for different types of Solar System objects such as comets, by mixing ice with black carbon and mineral dust (Jost et al, 2017b(Jost et al, , 2017a(Jost et al, , 2016Pommerol et al, 2015) as well as complex organics (Poch et al, 2016a(Poch et al, , 2016b. It has also been used for Mars-related studies to assess the influence of the mixing mode between ice and dust (Yoldi et al, 2021), and for the establishment of a dielectric model for subsurface sounding of the Martian surface (Brouet et al, 2018). Jost et al (2016) have also noted the resemblance between the reflectance phase curves of these particles and the observed properties of the surfaces of Europa and Enceladus.…”