Jeffrey S Kwang, University of Illinois at Urbana Champaign, Department of Civil and Environmental Engineering, Urbana, IL, United States; University of Massachusetts Amherst, Department of Geosciences, Amherst, MA, United States, Abigail L Langston, Kansas State University, Geography, Manhattan, KS, United States and Gary Parker, University of Illinois at Urbana Champaign, Urbana, IL, United States