Browsing by Author "Holland, Charles W."

Now showing items 1-5 of 5

    • Benchmarking of SCARAB volume scattering versus OASES volume scattering 

      Bratberg, Ivar; LePage, Kevin D.; Holland, Charles W.; Schmidt, Henrik (NATO. SACLANTCEN, 2001/05)
      OASES uses wavenumber integration to solve for the backscattered pressure caused by sound speed and density inhomogeneity scatterers in the sediment; SCARAB uses a ray path technique to find the backscattered intensity. ...

    • Bottom scattering measurements in shallow water 

      Holland, Charles W.; Hollett, Reginald D.; Troiano, Luigi (NATO. SACLANTCEN, 1999/08)
      Sonar performance predictions of reverberation in shallow water rely upon good estimates of the bottom scattering strength. However, little is understood about bottom scattering in shallow water in

    • Decay of large underwater bubble oscillations 

      McDonald, B. Edward; Holland, Charles W. (NATO. SACLANTCEN, 1999/02)
      Pressure - time series from breathing mode oscillation of large (centimeter scale or larger) underwater bubbles reveal much higher decay rates than can be explained using viscous, thermal, or radiative mechanisms which ...

    • Direct observation of the angle of intromission in marine sediment 

      Holland, Charles W. (NATO. SACLANTCEN, 2001/06)
      High porosity marine sediments like silty clays have the curious property that the speed of sound through its bulk medium is lower than that of the interstitial pore fluid. When a high porosity sediment is at the water ...

    • High resolution geoacoustic inversion in shallow water: a joint time and frequency domain technique 

      Holland, Charles W.; Osler, John C. (NATO. SACLANTCEN, 1998/12)
      High resolution geoacoustic data are quired for accurate predictions of