Outline of Main Research Theme for
Research Vessel “MIRAI” during fiscal year 2009
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| 1. Cruise Code : |
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2. Main research theme: |
| Interactions between climate variability and changing ocean ecosystem dynamics and biogeochemical cycles. |
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3. Objectives: |
| As a part of the main research theme, shipboard observation/experiments will be conducted at two time series stations in the western Pacific subarctic (K2: 47N/160E) and subtropical (S1: 27N/138E) gyres to study responses to Asian monsoon of ecosystem dynamics and biogeochemical cycles in two contrasting oceanographic conditions. Emphasis will be placed on describing seasonal variability of oceanic responses in order to detect long-term variability and/or trend. Processes to be studied include every aspect of end-to-end food web dynamics and biogeochemical cycles at two time-series stations. Intra-seasonal short term variability will be studied by visiting the stations twice during the cruise with aid of various moored instruments. It is envisioned that, from a series of research cruises with this main theme, an integrated and comprehensive understanding on seasonal variability of end-to-end food web dynamics and biogeochemical cycles in response to seasonal change of Asian monsoon could be achieved from as many as possible viewpoints and disciplines by close collaboration with external participants of widely distributing disciplines and ideas. Two short legs in a cruise may facilitate easier participation for the research community. This is the first winter cruise in a series of time-series cruises. |
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4. Outline of observation: |
At stations K2 and S1, the following observations are planned:
* CTDO-Hydrocast/ water sampling
* Upper layer physics
* Underwater current field
* Seawater chemistry
* Seawater bio-optics
* Phyto/Zoo plankton abundance and rate processes
* Sinking and diffusing vertical fluxes
* time-series observation with mooring system
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5.Main research area: |
| time-series stations in the western Pacific subarctic gyre and subtropical gyre (K2: 47N/160E, S1: 27N/138E), |
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6.Cruise period: |
| From 20 Jan, 2010 to 24 February 2010 (36 days) |
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7.Ports of call (tentative): |
| Ports of call (tentative): |
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| Port of departure: |
Sekinehama |
| Port of call : |
Yokosuka Shinko |
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8.Proponent of main research theme: |
Toshiro Saino (D. Sc.)
Program Director
Global Warming Observational Research Program
Institute of Observational Research for Global Change (IORGC)
Japan Agency for Marine-Earth Science and Technology (JAMSTEC)
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9. Contact person for questionnaire on this cruise: |
Toshiro Saino (D. Sc.)
Program Director
Global Warming Observational Research Program
Institute of Observational Research for Global Change (IORGC)
Japan Agency for Marine-Earth Science and Technology (JAMSTEC)
2-15, Natsushima-cho, Yokosuka 237-0061, Japan
Phone : +81-46-867-9450 FAX : +81-46-867-9455 E-mail : |
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10. Remarks
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| Similar scientific cruises in different seasons are planned in FY2010 and FY2011. |
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