THE NAHAL-YATIR BEDLOAD DATABASE - SEDIMENT DYNAMICS IN A GRAVEL-BED EPHEMERAL STREAM

The Nahal Yatir Bedload Transport Database arises from the Northern Ne gev River Sediment Monitoring Programme and represents the first body of bedload information to be collected during flash floods in desert g ravel-bed streams. Bedload flux was established automatically with thr ee slot-samplers of the Birkbeck type. This was complemented by hydrau lic measurements that allow sediment transport to be rated against cha nnel average shear stress and specific stream power. Bed material and bedload grain-size distributions are also provided. The database is gi ven in both printed and electronic tabular format.