- Geography, general 302
- Earth Sciences, general 123
- Environment, general 113
- Ecology 112
- Civil Engineering 57
- Agriculture 54
- Natural Hazards 54
- Fossil Fuels (incl. Carbon Capture) 40
- Mathematical Modeling and Industrial Mathematics 40
- Mineral Resources 40
- Statistics for Engineering, Physics, Computer Science, Chemistry and Earth Sciences 40
- Sustainable Development 40
- Computer Applications 19
- Signal, Image and Speech Processing 18
- Aerospace Technology and Astronautics 16
- Communications Engineering, Networks 16
- Control, Robotics, Mechatronics 16
- Human Geography 12
- Anthropology 10
- Archaeology 10