Issaouane Erg confined to basins. Sand in the Issaouane Erg, below the level of the sand dunes, has accumulated to a depth of 20 to 30 meters. It has barchan dunes as well as star dunes of 300 to 430 meters high. The presence of both barchan dunes (which form due to unidirectional winds) and star dunes (which form when winds from various directions deposit sand) "suggests that wind regimes have changed over time". NASA's "Earth Observatory" notes all three types of erg dunes are present in the photos of the Issaouane Erg taken from the International Space Station: stationary mega dunes,
Project of Translation from Arabic academics, Salma Jayyusi and Roger Allen, were involved in the proceedings that preceded the awarding of the Nobel Prize in Literature to the Egyptian writer Naguib Mahfouz. A number of other prominent academics have played key roles in translating for the project, including Naomi Shihab Nye. A partial list of PROTA books: Project of Translation from Arabic The Project of Translation from Arabic (or PROTA) is an academic project initiated by Dr Salma Khadra Jayyusi in 1980 in order to translate, and publish, works of Arabic literature into the English language. The stated goal of PROTA is ""the dissemination of