Recently, an article named ‘Effect of history of wave exposure on seabed liquefaction’ was published on Coastal Engineering. This article focused on the experimental study on the dynamic response and liquefaction of muddy seabed. This article was collaboratively accomplished by many known scholars at the Technical University of Denmark, Istanbul Technical University, and BM SUMER Consultancy & Research, and young professor Titi Sui was the first author.
Seabed soil may undergo liquefaction under waves, and therefore the water-sediment mixture between acts like a liquid with catastrophic consequences. Although much progress has been made in understanding of wave-induced soil liquefaction, no study is yet available, investigating the effect of history of wave exposures on liquefaction in a systematic manner. This paper presents the results of an experimental investigation of wave-induced liquefaction in the case of multiple wave exposures. The first strongest wave climate (i.e., the first wave climate, which is strong enough to cause liquefaction) of a multiple wave-climate sequence ‘secures’ the onset of liquefaction, independent of the prior wave exposures. The seabed soil will eventually become liquefaction resistant with a very large relative density as a result of the wave-induced liquefaction-compaction process. The research results provide theoretical basis and technical support for the analysis and protection of dynamic instability of the seabed foundation of marine structures.