Ricerc@Sapienza

The aim of this paper is to assess the potential use of data recorded by the Global Navigation Satellite System Reflectometry (GNSS-R) Cyclone Global Navigation Satellite System (CYGNSS) constellation to characterize desert surface roughness. The study is applied over the Sahara, the largest non-polar desert in the world. This is based on a spatio-temporal analysis of variations in Cyclone Global Navigation Satellite System (CYGNSS) data, expressed as changes in reflectivity (G).

On April 1st, 2012, in the desert sand three tourists stumbled onto what they interpreted as the remains of an ancient battlefield. In reality they discovered the remains of an ancient metal melting site ? an ancient crime scene. Most of the finds consisted of weapons fashioned from copper-alloy, especially daggers. They were mostly grave-goods. Everything about this find was unusual. How and when did it get there, just inside the Empty Quarter. Why should it be here, distant for markets and roads?