Coastal Acoustic Tomography

Authors

Arata Kaneko Graduate School of Engineering, Hiroshima University, Japan. Professor Kaneko started his academic career as a research associate in Kyushu University. In 1980, during his time as a research associate in the Research Institute for Applied Mechanics (RIAM), Kyushu University, he was awarded Doctor of Engineering. In 1981, he was promoted as an associate professor in RIAM. After that, he shifted research field from the nearshore fluid dynamics to open-ocean fluid dynamics and started a challenging structural observation of ocean currents such as the Kuroshio Current and Tsushima Warm Current, using a newly-developed towed-type acoustic Doppler current profiler (ADCP). From 1985 to 1986, Professor Kaneko worked at Woods Hole Oceanographic Institution, extending his research to ocean acoustic tomography (OAT). In 1991, he moved to the Graduate School of Engineering, Hiroshima University, as a full professor. At this time Kaneko set up a lab studying OAT and began exploring the now well-established technology and method of applying OAT to coastal sea study, with more acoustic complexity. The coastal acoustic tomography (CAT) group, which was established in Hiroshima University and composed of research staff and graduate students educated in Kaneko's laboratory, have visualized (mapped) variable coastal currents with methods combined by inversion and data assimilation in the last two decades and results have been released to the international oceanographic community Xiao-Hua Zhu State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, China. Xiao-Hua Zhu received a Ph.D. in physical oceanography from Hiroshima University. He was a post-doctoral fellow at Chugoku National Industrial Research Institute (CNIRI), Ministry of Economy, Trade and Industry of Japan. After this Zhu moved to the Frontier Observational Research System for Global Change (FORSGC)/Japan Agency for Marin-Earth Science and Technology (JMASTEC) as a Research Scientist and started the mooring observations to measure the Kuroshio and Ryukyu Current in both sides of the Ryukyu Island by the Pressure-recording Inverted Echo Sounders (PIESs), moored ADCP and currentmeters. In 2006, he became a Senior Research Scientist of the State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration of China. Since then, he imported the coastal acoustic tomography (CAT) systems from Hiroshima University-related incubation company (Aqua Environmental Monitoring Limited Liability Partnership) and successfully carried out the CAT experiments in the coastal region of China, including Zhitouyang Bay, Sanmen Bay, Qiangtang River, Dalian Bay, Jiaozhou Bay and Qiongzhou Strait. He is also an adjunct professor in Zhejiang University, Dalian Ocean University, Hehai University and Shanghai Jiaotong University. Ju Lin College of Information Science & Engineering, Ocean University of China, Qingtao, China. Ju Lin is an associate professor of Ocean University of China. His research interests are focused on the characteristics of underwater acoustic propagation, the development of underwater acoustic monitoring system and acoustical oceanography. In the last decade, the newly proposed methods succeeded to invert the coastal sea environment parameters such as tidal current and temperature in the Kanmon Strait, Hiroshima Bay, Luzon Strait and Jiaozhou Bay from coastal acoustic tomography data. He serves as an executive council member of the Acoustic Society of Shandong, China, and a member of the Physical Acoustics Branch Committee of Acoustical Society of China and the Underwater Acoustics Branch Committee of Acoustical Society of China.