Determination of total susoended sediment during the neap tide and spring tide at Setiu Wetland, Setiu, Terengganu

Abstract

Determination of Total Suspended Sediment (TSS) at Setiu estuaries was conducted on 23rd and 24th September during the neap tide and 29th and 30th September during the spring tide. Samples were taken at two stations for IO hours with an interval time of 15 minutes. The amount of Total Suspended Sediment was higher with the increasing of current velocity. The current velocities were higher during the ebb tide. The average for current velocities during the neap tide were 0.0623 ms"1 (ebb tide) and 0.04 ms-1 (flood tide) for station one while 0.0654 ms-1 (ebb tide) and 0.0412 ms-1 (flood tide) for station two. Meanwhile, the average for current velocities during spring tide was 0.0510 ms-1 (ebb tide) for station one and 0.0488 ms-1 (ebb tide) for station two. The total suspended sediment is higher during the neap tide with 2.3733 kg/hr (station one) and 2.6167 kg/hr (station two). While, the Total Suspended Sediment is much lower during spring tide with 1.2963 kg/hr ( station one) and 1.1846 kg/ hr ( station two). The Total Suspended Sediment was higher during the neap tide compared to spring tide, caused by the tidal elevation and additional of imported sediment at the estuaries during the flood tide.