Now showing items 1-8 of 8

    • Hydrate morphology : physical properties of sands with patchy hydrate saturation 

      Dai, Sheng; Santamarina, J. Carlos; Waite, William F.; Kneafsey, Timothy J. (American Geophysical Union, 2012-11-14)
      The physical properties of gas hydrate-bearing sediments depend on the volume fraction and spatial distribution of the hydrate phase. The host sediment grain size and the state of effective stress determine the hydrate ...
    • Hydro-bio-geomechanical properties of hydrate-bearing sediments from Nankai Trough 

      Santamarina, J. Carlos; Dai, Sheng; Terzariol, Marco; Jang, J.; Waite, William F.; Winters, William J.; Nagao, Jiro; Yoneda, Jun; Konno, Yoshihiro; Fujii, Tetsuya; Suzuki, K. (Elsevier, 2015-03-01)
      Natural hydrate-bearing sediments from the Nankai Trough, offshore Japan, were studied using the Pressure Core Characterization Tools (PCCTs) to obtain geomechanical, hydrological, electrical, and biological properties ...
    • Mechanical properties of sand, silt, and clay containing tetrahydrofuran hydrate 

      Yun, Tae Sup; Santamarina, J. Carlos; Ruppel, Carolyn D. (American Geophysical Union, 2007-04-17)
      The mechanical behavior of hydrate-bearing sediments subjected to large strains has relevance for the stability of the seafloor and submarine slopes, drilling and coring operations, and the analysis of certain small-strain ...
    • Parametric study of the physical properties of hydrate-bearing sand, silt, and clay sediments : 1. Electromagnetic properties 

      Lee, J. Y.; Santamarina, J. Carlos; Ruppel, Carolyn D. (American Geophysical Union, 2010-11-09)
      The marked decrease in bulk electrical conductivity of sediments in the presence of gas hydrates has been used to interpret borehole electrical resistivity logs and, to a lesser extent, the results of controlled source ...
    • Parametric study of the physical properties of hydrate-bearing sand, silt, and clay sediments : 2. Small-strain mechanical properties 

      Lee, J. Y.; Francisca, Franco M.; Santamarina, J. Carlos; Ruppel, Carolyn D. (American Geophysical Union, 2010-11-09)
      The small-strain mechanical properties (e.g., seismic velocities) of hydrate-bearing sediments measured under laboratory conditions provide reference values for calibration of logging and seismic exploration results acquired ...
    • Physical properties of hydrate-bearing sediments 

      Waite, William F.; Santamarina, J. Carlos; Cortes, Douglas D.; Dugan, Brandon; Espinoza, D. N.; Germaine, J.; Jang, J.; Jung, J. W.; Kneafsey, Timothy J.; Shin, H.; Soga, K.; Winters, William J.; Yun, T.-S. (American Geophysical Union, 2009-12-31)
      Methane gas hydrates, crystalline inclusion compounds formed from methane and water, are found in marine continental margin and permafrost sediments worldwide. This article reviews the current understanding of phenomena ...
    • Thermal conductivity of hydrate-bearing sediments 

      Cortes, Douglas D.; Martin, Ana I.; Yun, Tae Sup; Francisca, Franco M.; Santamarina, J. Carlos; Ruppel, Carolyn D. (American Geophysical Union, 2009-11-18)
      A thorough understanding of the thermal conductivity of hydrate-bearing sediments is necessary for evaluating phase transformation processes that would accompany energy production from gas hydrate deposits and for estimating ...
    • Volume change associated with formation and dissociation of hydrate in sediment 

      Lee, J. Y.; Santamarina, J. Carlos; Ruppel, Carolyn D. (American Geophysical Union, 2010-03-11)
      Gas hydrate formation and dissociation in sediments are accompanied by changes in the bulk volume of the sediment and can lead to changes in sediment properties, loss of integrity for boreholes, and possibly regional ...