Journal
MARINE GEORESOURCES & GEOTECHNOLOGY
Volume 37, Issue 9, Pages 1149-1150Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/1064119X.2018.1528320
Keywords
Excess pore pressure; elastoplastic soil; progressive liquefaction
Funding
- National Natural Science Foundation of China [41602282]
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The excess pore pressure accumulation is a key factor when estimating the formation mechanism of large pockmarks, as it determines the liquefaction potential of marine sediments due to water waves. The governing equations for excess pore pressure may have different forms for various types of sediments and then shall reflect the cyclic plasticity of the soil. For water waves propagating over a porous seabed, the liquefaction area induced by waves is generally progressive, which indicates that the liquefaction area will move forward following the wave train. Therefore, the excess pore pressure accumulation can be used to explain the occurrence of the large pockmarks, but the dimension of the pockmark may be related to the heterogeneity of sediment or the wave properties affected by the topography in the subaqueous Yellow River Delta.
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