1. Key Laboratory of Western China's Environmental System (Ministry of Education), College of Earth and Environmental SciencesLanzhou University Lanzhou China
2. State Key Laboratory of Loess and Quaternary Geology, Institute of Earth EnvironmentChinese Academy of Sciences Xi'an China
3. CAS Center for Excellence in Tibetan Plateau Earth SciencesChinese Academy of Sciences Beijing China
4. Department of GeosciencesThe Pennsylvania State University University Park PA USA
5. Department of Geological SciencesCalifornia State University Northridge Northridge CA USA
6. Department of Earth and Environmental SciencesUniversity of Rochester Rochester NY USA
7. Department of Environmental SciencesRochester Institute of Technology Rochester NY USA