1. Tectonics Observatory, Division of Geological and Planetary Sciences; California Institute of Technology; Pasadena California USA
2. Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
3. Scripps Institution of Oceanography; University of California, San Diego; La Jolla California USA
4. U.S. Geological Survey; Pasadena California USA
5. Research Center for Geotechnology; Indonesian Institute of Sciences; Bandung Indonesia