1. School of Earth and Space Exploration, Arizona State University, Tempe, Arizona 85287, United States
2. Department of Earth, Ocean and Atmospheric Sciences and National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32306, United States
3. Institute of Surface-Earth System Science, Tianjin University, Tianjin 300072, China
4. School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States