1. School of Civil and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA.
2. Department of Civil Engineering, Texas A&M University, College Station, TX 77845, USA.
3. Department of Mechanical and Aerospace Engineering, Arizona State University, Tempe, AZ 85287, USA.
4. Pacific Science Center, United States Geological Survey, Santa Cruz, CA 95060, USA.
5. School of Civil and Environmental Engineering, Georgia Institute of Technology, Savannah, GA 31407, USA.