Affiliation: | 1. State Key Lab of Loess and Quaternary Geology, IEE, CAS, , Xi'an, 710075 China;2. School of Human Settlement and Civil Engineering, Xi'an Jiaotong University, , Xi'an, 710049 China;3. Department of Geological Sciences, Indiana University, , Bloomington, IN, 47405‐1405 USA;4. Department of Earth and Planetary Sciences, University of Tennessee, , Knoxville, TN, 37996 USA |