The 8th China-Indonesia Joint Research Cruise (IMPOLSE 2025), jointly conducted by the Institute of Oceanology of the Chinese Academy of Sciences (IOCAS) and the Indonesian National Research and Innovation Agency (BRIN), was successfully completed on December 30, 2025.
The expedition, which ran from November 25 to December 30, 2025, was carried out using the RV. GEOMARIN III owned by the Center for Marine Geology Survey and Mapping (BBSPGL) under the Indonesian Ministry of Energy and Mineral Resources (ESDM).
Dr. WANG Zheng of IOCAS and his research team are on the GEOMARIN III
IOCAS and BRIN researchers hold a discussion meeting on the GEOMARIN III
Researchers recovered the mooring deployed during the 2021 and 2023 expedition
For the first time in the joint research cooperation, researchers successfully recovered a high-frequency deep-sea mooring system. The mooring system had been deployed since November 2023. Compared with traditional low-frequency moorings, the recovered system achieved high-precision, continuous high-frequency capture of ocean hydrological environmental data over a two-year period through technological upgrades.
These invaluable in-situ observational data support research on global climate change and regional small-scale ocean dynamics.
Kind of plankton symbiont with microorganisms
BRIN stated that, this success marks a new chapter in high-temporal-resolution national oceanographic observations, particularly for studying rapid oceanic dynamic phenomena such as internal solitary waves, which have long been difficult to observe in detail using conventional instruments.
"This expedition represents a deep integration of the Belt and Road Initiative and the Golden Indonesia 2045 vision in the field of marine science and technology," said Dr. WANG Zheng, Associate Researcher of IOCAS. "As the 8th joint research cruise since the cooperation began in 2014, this cruise has not only deepened our understanding of the Indonesian Throughflow—a key node in the global ocean circulation—but also exemplifies the high level of mutual trust and collaboration between China and Indonesia in marine scientific research."
Group Photo
(Text by WANG Jiaojiao, Edited by WANG Zheng & ZHANG Yiyi)
(Editor: ZHANG Yiyi)