1. Faculty of Human Ecology, Bogor Agricultural University, Bogor, Indonesia
2. Global Geophysics Research Group, Faculty of Mining and Petroleum Engineering, Bandung Institute of Technology, Bandung, Indonesia
3. Geological Engineering Department, Faculty of Engineering, Gadjah Mada University, Yogyakarta, Indonesia
4. Faculty of Social Sciences and Political Sciences, Airlangga University, Surabhaya, Indonesia