Affiliation: | aDepartment of Physics, St. Joseph’s University, Philadelphia, PA 19131, USA bDepartment of Physics and Physical Oceanography, Memorial University of Newfoundland, St. John’s, Nfld, Canada A1B 3X7 cLaboratoire de Rhéologie, B.P. 53, Domaine Universitaire, Grenoble 38041 Cedex 9, France |