Department of Geography;
School of Earth Sciences;
China University of Geosciences;
Wuhan 430074;
China;
Physics Department;
School of Exact Sciences;
Salta National University;
Salta A4408FVY;
Argentina;
State Key Laboratory of Information Engineering in Surveying;
Mapping and Remote Sensing;
Wuhan University;
Wuhan 430079;
China;