College of Geosciences and Surveying Engineering China University of Mining and Technology Beijing 100083 China College of Environmental Science and Traveling Nanyang Normal University Nanyang 473061 Henan China;
College of Environmental Science and Traveling Nanyang Normal University Nanyang 473061 Henan China;
Academy of Disaster Reduction and Emergency Management Ministry of Civil Affairs Ministry of Education Beijing Normal University Beijing 100875 China;