ALBERT

Description: The 2016 Mw 6.5 earthquake struck a large region of the Apennines in central Italy and produced impressive and complex surface ruptures. These ruptures were investigated and mapped by field geologists for years after the earthquake thanks also the use of remote sensing data. Here we present detailed maps of the ground deformation pattern produced by the Vettore normal fault activated during the Mw 6.5 mainshock, using Differential Synthetic Aperture Radar Interferometry. The DInSAR analysis has been retrieved from ALOS-2 SAR data, via the Parallel Small BAseline Subsets (P-SBAS) algorithm. At the local scale, we automatically identify many surface ruptures, most of which already observed in the field. At the large scale, we trace a set of five geological cross-sections to inspect a possible link between the coseismic vertical displacement, the lithology distribution and the tectonic structures of the area (i.e., thrusts, normal faults). On these sections, we also project the seismicity distribution recorded during October 2016.The integration of such datasets allows the recognition of an important geological control in the overall distribution of the deformation, which shows maximum values in correspondence of the carbonatic multilayer and minimum values within the clastic succession. The distribution of seismicity allows also us to distinguish seismogenic by aseismic slip associated with fault ruptures.The results of this work demonstrate that the integration of surface geology, remote sensing data and seismicity, can lead to a better understanding of the influence of geological structures on the distribution of the ground deformation associated with earthquakes.

Description: Silicate glasses represent an important component in volcanic products, and since volcanism occurred on all terrestrial planets in the solar system, they might influence the spectral response of portions of planetary sur-faces. However, their spectral characteristics are not always considered for the interpretation of planetary surfaces and terrains, giving their blurred spectral response and the supposed lack of information they can provide. In this study, we used experimental petrology to produce glassy samples having a wide variety of chemical compositions, and we characterized them by means of reflectance and emissivity in different spectral ranges, to observe the variation of their spectral characteristics with changing chemical composition and with varying granulometric characteristics. In the Mid-Infrared range, we observed a systematic shift of spectral features, both for reflectance and emissivity spectra, that can be modelled with SiO2 and SiO2 + Al2O3 + TiO2 content, whereas the shape of the spec-tra is determined by a complex interaction of chemical and granulometric characteristics. As for the Visible and Near Infrared spectral range, we observed a correlation between the spectral slope and the iron content and speciation. Our results suggest that accounting for the spectral properties of silicate glasses, when interpreting spectral data obtained from the surface of terrestrial planets, will help in the characterization of magmatic bodies and volcanoclastic materials.Thus, we offer an open-source database of collected spectra within the Space Sci-ence Data Center (SSDC), a facility of the Italian Space Agency (ASI) which includes data processing and data archiving center (www.ssdc.asi.it).