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- Stability analysis of El Molinar slide (Alcoy, SE Spain)Publication . Corada, A. S.; Cantó, C.; Delgado, J.; Giner, JoseABSTRACT: The El Molinar slide is a translational slide that affects Upper Miocene marls near the city of Alcoy (Alicante, SE Spain). In this study, the stability of this landslide is studied focusing on the effect of variations of the water table within slide body and the possible effect of maximum expected earthquake in a 475 year return period. The results obtained shown that the water table is the main variable in this problem. Its change may in duce very large variations in safety factor (from 1.53 up to 0.69, correspon ding to dry and complete saturation, respectively). The stability under dynamic conditions shows that this slide is not sensitive to waves with fre quencies above 2 Hz, but it reduces significantly its safety factor when waves applied are characterized by low frequencies, especially when their characteristic frequency is below 0.6 Hz.