Dr. Ikuo Towhata is a professor emeritus of The University of Tokyo and a visiting professor at Kanto Gakuin University. He is also the chair of the Professional Image Committee of the International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE), a director of Tohata Architects & Engineers, and an advisor of the Chuo Kaihatsu Corporation, Japan. He was the president of the Japanese Geotechnical Society and the vice president of the Asian Region of the ISSMGE. He has left an indisputable legacy in geotechnical research, particularly in earthquake geotechnical engineering. He published more than 400 English papers in international journals and conference proceedings and a comprehensive book on geotechnical earthquake engineering. He has also maintained a lifelong dedication to education, as evidenced by his many years of service as a professor at The University of Tokyo, a distinguished visiting professor at the Indian Institute of Technology, Bombay, as well as thetime spent at the Asian Institute of Technology, Thailand. He has taught and supervised numerous students from more than 30 countries.

Dr. Gonghui Wang is a professor in the Disaster Prevention Research Institute, Kyoto University, Japan. He has been working on landslide disaster and mitigation measures from the perspectives of geophysics, geotechnics, and engineering geology for more than two decades. His research interests include landslide dynamics, climate change landslides, landslide dams, granular mechanics, soil liquefaction, risk management, and disaster and environmental education. He has published more than 200 papers in scientific journals and conference proceedings. He has also co-edited two books published by Springer. He is currently an editorial board member of Engineering Geology, Landslides, Geosciences, and other Japanese and Chinese journals.

Dr. Qiang Xu is a professor and vice president of the Chengdu University of Technology. He is also the deputy vice director of the State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, China. He is mainly working on landslide hazard assessment and risk management, with a special focus on landslide monitoring and early warning as well as emergency countermeasures. He has worked closely with local communities, NGOs, and governments, and he has published more than 500 papers as well as 15 books in Chinese and English. He also works as an editor of several international journals.

Dr. Chris Massey is an engineering geologist at the Institute of Geological and Nuclear Sciences (GNS Science), New Zealand, and holds a Ph.D. from the University of Durham. He has wide experience in geology, geomorphology, and geotechnics, with a rich work background in Hong Kong, Australia, and now in New Zealand (GNS). His research interests include rock-fall analysis and design, landslide monitoring and modeling, geohazard assessment and mitigation, geological and geomorphological mapping, earthquake-induced landslide estimates, and numerical modeling. He has published more than 140 papers in scientific journals and in books and conference proceedings. He worked as the leader of several national projects on landslides in New Zealand. He also works as an editorial board member of Engineering Geology.

Dr. Ikuo Towhata is a professor emeritus of The University of Tokyo and a visiting professor at Kanto Gakuin University. He is also the chair of the Professional Image Committee of the International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE), a director of Tohata Architects & Engineers, and an advisor of the Chuo Kaihatsu Corporation, Japan. He was the president of the Japanese Geotechnical Society and the vice president of the Asian Region of the ISSMGE. He has left an indisputable legacy in geotechnical research, particularly in earthquake geotechnical engineering. He published more than 400 English papers in international journals and conference proceedings and a comprehensive book on geotechnical earthquake engineering. He has also maintained a lifelong dedication to education, as evidenced by his many years of service as a professor at The University of Tokyo, a distinguished visiting professor at the Indian Institute of Technology, Bombay, as well as thetime spent at the Asian Institute of Technology, Thailand. He has taught and supervised numerous students from more than 30 countries.

Dr. Gonghui Wang is a professor in the Disaster Prevention Research Institute, Kyoto University, Japan. He has been working on landslide disaster and mitigation measures from the perspectives of geophysics, geotechnics, and engineering geology for more than two decades. His research interests include landslide dynamics, climate change landslides, landslide dams, granular mechanics, soil liquefaction, risk management, and disaster and environmental education. He has published more than 200 papers in scientific journals and conference proceedings. He has also co-edited two books published by Springer. He is currently an editorial board member of Engineering Geology, Landslides, Geosciences, and other Japanese and Chinese journals.

Dr. Qiang Xu is a professor and vice president of the Chengdu University of Technology. He is also the deputy vice director of the State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, China. He is mainly working on landslide hazard assessment and risk management, with a special focus on landslide monitoring and early warning as well as emergency countermeasures. He has worked closely with local communities, NGOs, and governments, and he has published more than 500 papers as well as 15 books in Chinese and English. He also works as an editor of several international journals.

Dr. Chris Massey is an engineering geologist at the Institute of Geological and Nuclear Sciences (GNS Science), New Zealand, and holds a Ph.D. from the University of Durham. He has wide experience in geology, geomorphology, and geotechnics, with a rich work background in Hong Kong, Australia, and now in New Zealand (GNS). His research interests include rock-fall analysis and design, landslide monitoring and modeling, geohazard assessment and mitigation, geological and geomorphological mapping, earthquake-induced landslide estimates, and numerical modeling. He has published more than 140 papers in scientific journals and in books and conference proceedings. He worked as the leader of several national projects on landslides in New Zealand. He also works as an editorial board member of Engineering Geology.