عنوان مقاله [English]
Many studies have been conducted on the characteristics of hydraulic jumps over horizontal basins. On sloping basins, however, few such studies have been performed so that the issue requires more investigation. A significant number of studies has also been conducted on basins with positive slopes but comparatively few have been carried out on basins with negative slopes. This study was carried out to determine the characteristics of hydraulic jumps over negative slopes with negative steps. The results revealed that negative steps have significant effects on the stability of hydraulic jumps, while also increasing their length and conjugated depth.