Combining Field and Laboratory Measurements to Determine the Erosion Risk of Cohesive Sediments Best

摘要: In contrast to non-cohesive sediments, the incipient motion of cohesive sediments is characterized by much more complex interactions between several sedimentary, biological, and chemical parameters. Thus, site-specific investigations are required obtain information about erosion stability materials. This becomes even relevant for contaminated stored in riverine as a “burden past”, because their remobilization potential during flood events. article represents twofold measuring strategy detection thresholds: an situ device determination critical shear stresses field, laboratory approach where sediment cores withdrawn subsequently analyzed over depth. The combined was applied River Elbe at selected sites catchment Saale. results show great variety thresholds depth, demonstrating need conduct vertical analyses, especially when addressing buried layers with contaminations. latter only possible but revealed clear benefits capturing loose flocculent layer on top that might be easily lost retrieval transport. Consequently, it ideal combine both approaches comprehensive insight into stability.