Christopher GOMEZ is a researcher born in France, who worked in California (USA), Christchurch (New Zealand) and extensively in South-East Asia (Indonesia, Taiwan) and in Japan, investigating the lingakes between climate change, rainfall, and sediment-borne hazards and risks on mountain and volcanic slopes down to the sea. He concentrates on the modalities of transport and deposition of sediments. His work combines field investigation using Ground Penetrating Radar, Geoelectic investigation, UAV photogrammetry, Schmidt Hammer Testing, with laboratory geotechnical analysis, computer simulations (physical and purely numerical), GIS and Remote Sensing. He is also a research Emeritus Professor at Gadjah Mada University in Indonesia, where numerous collaborations, which students are invited to join, take place.