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Integrated understanding of physical, biogeochemical, and ecological processes in the eastern Indian Ocean

Update: 06. 08, 2023

Jun. 8, 2023(Jul. 6-7, 2023)

Date:July 6, 2023(Thu)13:00~17:45
July 7, 2023(Fri)10:00~17:00

Venue:Conference Room (with Zoom connection)
Atmosphere and Ocean Research Institute, The University of Tokyo
5-1-5 Kashiwanoha, Kashiwa-shi, Chiba 277-8564, JAPAN

   Yukio Masumoto, Graduate School of Science, U.Tokyo, masumoto[at]
   Hiroaki Saito, AORI, U.Tokyo, hsaito[at]
   Hajime Obata, AORI, U.Tokyo, obata[at]
Contact Person at AORI:  Hiroaki Saito, AORI, U.Tokyo, hsaito[at]  

Note: All the information on time schedule below is in Japan Standard Time.

Symposium Program

July 6th (Thu)

13:00-13:30 Introduction to the Symposium (Yukio Masumoto, U. Tokyo)

Session 1 (Indonesia-Japan collaboration on eastern Indian Ocean research 1) (English)

13:30-13:50  Riza Iskandar (RCO, BRIN) “Marine Heatwaves in the Maritime Continent”

13:50-14:10  Takanori Horii (JAMSTEC) “Coastal upwelling events along the southern coasts of Java and their impacts on the  Indian Ocean Dipole”

14:10-14:30  Idha Y. Ikhsani (The Univ. Tokyo, BRIN), Kuo Hong Wong (Kanazawa Univ.), Taejin Kim (Pukyong National Univ.), Asami S. Mashio (Kanazawa Univ.), Kazuhiro Norisuye (Niigata Univ.), Hajime Obata (The Univ. Tokyo) “Biogeochemistry of dissolved trace metals in the Bay of Bengal”

14:30-15:30 Break (Lunch for Indonesian side)

Session 2 (Indonesia-Japan collaboration on eastern Indian Ocean research 2) (English)

15:30-15:50  Sakae Toyoda, Kotaro Terajima (Tokyo Inst. Technology), Naohiro Yoshida (Tokyo Inst. Technology, NICT), Chisato Yoshikawa(JAMSTEC), Akiko Makabe (JAMSTEC), Fuminori Hashihama (Tokyo Univ. Marine Science & Technology), Hiroshi Ogawa (The Univ. Tokyo) “Extensive Accumulation of Nitrous Oxide in the Oxygen Minimum Zone in the Bay of Bengal”

15:50-16:10 Arief Rachman (RCO, BRIN) “Studies on the microbes and planktonic communities at the chlorophyll maximum layers and deep scattering layers of Indonesian seas”

16:10-16:30 Junya Hirai (AORI, U. Tokyo) “Zooplankton diversity in the eastern Indian Ocean based on molecular Approaches”

16:30-16:45 Break

16:45-17:45 Discussion on Indonesia-Japan collaborative research

Reception (in person only)

July 7th (Fri)

Session 3 (Eastern Indian Ocean Research 1) (Japanese)

10:00-10:30 Kazuhiro Norisuye, Rojubally Sheba, Tohru Fukazawa, Sora Saito, Daichi Asanuma (Niigata Univ.), Hajime Obata (The Univ. Tokyo) “Distributions of ultra trace elements and isotopes in the eastern Indian Ocean: special focusing on results of Pb isotope ratios”

10:30-11:00 Yuta Isaji (JAMSTEC), C. Yoshikawa (JAMSTEC), N. O. Ogawa (JAMSTEC), H. Obata (AORI), K. Matsumoto (JAMSTEC), A. Makabe (JAMSTEC), S. Toyoda (Tokyo Inst. Tech.), N. F. Ishikawa (JAMSTEC), H. Ogawa (AORI), H. Saito (AORI), M. C. Honda (JAMSTEC), N. Ohkouchi (JAMSTEC) “Novel constraints on the nutrient sources for phytoplankton in the Eastern Indian Ocean”

11:00-11:30 Taira Nagai (Japan Fisheries Research and Education Agency) “Study on turbulent mixing in the Indonesian Archipelago”

11:30-12:00 Youhei Yamashita, Yutrao Mori (Hokkaido Univ.), Hiroshi Ogawa (The Univ. Tokyo) “Distributions of dissolved black carbon in the eastern Indian Ocean”

12:00-13:30 Lunch

Session 4 (Eastern Indian Ocean Research 2) (Japanese)

13:30-14:00 Fanyu ZHOU (AORI, U. Tokyo) “Feeding ecology of three species of euphausiids in the eastern Indian Ocean inferred from 18S V9 metabarcoding”

14:00-14:30 Yusuke Terada and Yukio Masumoto (U. Tokyo) “Upper-ocean variability in the southeastern tropical Indian Ocean -Processes responsible for the mixed-layer temperature variability and upwelling off the coast of Java-”

14:30-14:45 Break

Session 5 (2024 R/V Hakuho-Maru plans) (Japanese)

14:45-15:00 Yukio Masumoto (U. Tokyo) “Physical Observation Plan”
15:00-15:15 Hajime Obata (AORI, U. Tokyo) “Chemical/Biogeochemical Observation Plan”
15:15-15:30 Hiroaki Saito (AORI, U. Tokyo) “Biological/Ecological Observation Plan”
15:30-17:00 Discussion on observational research for 2024 R/V Hakuho-Maru cruise