1. Department of Mathematics, Faculty of Physics, Lomonosov Moscow State University, Moscow 119991, Russia
2. Schmidt Insitute of Physics of Earth, Russian Academy of Sciences, Moscow 123995, Russia
3. Innovation Academy for Earth Science, Chinese Academy of Sciences, Beijing 100029, China
4. Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
5. University of the Chinese Academy of Sciences, Beijing 100049, China