Lombok Strait
The monsoon season also determines the wave properties of the Lombok Strait. The arc-like internal wave and the irregular internal wave are wave patterns which occur as a result of seasonal influences. The tide flow is controlled through Nusa Penida Sill (NPS), reaching 350 m in depth. The Lombok Strait features strong semi-diurnal tides of ~90 m in amplitude with a distance of 30 km from the Nusa Penida Sill (NPS). The flow of the strait waters also makes it distinctive as it comprises of a layered structure: the upper layer has a permanent southward flow and the lower layer has a reversing southward-northward flow.