1. Ph.D. Candidate, Dept. of Civil Engineering, Geotechnics Division, Middle East Technical Univ., 06531, Ankara, Turkey (corresponding author).
2. Assistant Professor, Dept. of Geology and Geophysics, Geological Engineering Program, Univ. of Utah, 115 S 1460 E, Room 383, Salt Lake City, UT 84112-0102.