论文部分内容阅读
Biogenic stabilization processes that result in the formation of biofilms and interparticle-networks can significantly alter the transport characteristics of flnegrained sediment layers. The increase in the threshold of sediment motion can amount to up to several hundred percent. While planctic organisms are involved in the formation of depositing flocs and the early stages of consolidation, the secondary consolidation is controlled by microbial breakdown processes, leading to changes in the mechanical properties of cohesive sediments. While the primary stage of consolidation is completed in days, the secondary processes can last for decades. A preliminary series of erosion tests in an annular flume revealed demonstrated the biogenic impact in the early stages of sediment formation. Surrogate materials were used to simulate the governing properties of natural soft sediments.
Biogenic stabilization processes that result in the formation of biofilms and interparticle-networks can significantly alter the transport characteristics of flnegrained sediment layers. The increase in the threshold of sediment motion can amount to up to several hundred percent. While planctic organisms are involved in the formation of the primary stages of consolidation is completed in days, the secondary processes can last for decades. A preliminary series of erosion tests in an annular flume demonstrated rendered the biogenic impact in the early stages of sediment formation. Surrogate materials were used to simulate the governing properties of natural soft sediments.