Tetsu Koike

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About

Dr. Tetsu Koike is a leading figure in deep-sea robotics and marine resource exploration, specializing in the autonomous survey of cobalt-rich manganese crusts (Mn-crusts). His work directly addresses the challenge of mapping vast, inaccessible seafloor deposits critical for modern battery technologies. Koike’s major contribution is the development of multirobot, multimodal survey strategies that dramatically improve the efficiency and accuracy of resource estimation. His landmark 2024 study, cited 10 times, demonstrated a pioneering approach using two autonomous underwater vehicles (AUVs) and a remotely operated vehicle (ROV) equipped with cameras, multibeam sonar, and subbottom profilers to conduct a comprehensive multiyear survey. This work set a new standard for integrated deep-sea exploration. In a 2023 study, Koike further advanced the field by showing that multibeam sonar can cover four times the area of a visual 3D mapping system, significantly enhancing survey coverage. By fusing high-resolution visual data with wide-area acoustic sensing, Koike’s research provides a practical, scalable framework for assessing critical mineral resources, making him a key innovator in sustainable deep-sea mining and underwater robotics.