Pressure Jumps during Drainage in Macroporous Soils

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  • Diego Soto, Spain
  • Marcos Paradelo Pérez, Denmark
  • A Corral, Denmark
  • J.E. Lopez-Periago, Denmark
Tensiometer readings obtained at high resolution during drainage of structured soil columns revealed pressure jumps with long range correlations and burst sequences with a hierarchical structure. The statistical properties of jumps are similar to Haines jumps described in invasion percolation processes at pore scale, but they are much larger in amplitude and duration. Pressure jumps can result from transient redistribution of water potential in internal regions of soil and can be triggered during drainage by capillary displacements at the scale of structural pores.
Original languageEnglish
JournalVadose Zone Journal
Number of pages30
Publication statusE-pub ahead of print - 2019

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