Underwater noise from submarine turbidity currents.

Academic Article


  • Noise from turbidity currents flowing down the face of a fjord delta was measured underwater at frequencies from 1 to 1200 kHz. The noise spectra are consistent with sound generation by collisions among sand-sized particles. The spectra from the leading head extend to higher frequencies than those from the trailing body, indicating that collisions were between finer-grained particles in the head and coarser-grained particles in the body. Noise intensity increased 100-fold for a two-fold increase in head speed, consistent with the expected collision rate for granular materials in the high-flow gas-like phase and highly turbulent particle-laden flows.
  • Authors

  • Hay, Alex E
  • Hatcher, MG
  • Hughes Clarke, John
  • Status

    Publication Date

  • July 2021
  • Has Subject Area

    Published In

  • JASA Express Lett  Journal
  • Keywords

  • Noise
  • Sand
  • Sound
  • Digital Object Identifier (doi)

    Pubmed Id

  • 36154650
  • Start Page

  • 070801
  • Volume

  • 1
  • Issue

  • 7