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Physical Oceanography Lab
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A physical oceanography lab that uses numerical models to explore how water flows through straits and rivers.

AboutAbout the lab
Exploring the movement of water between straits, rivers, and the sea.
Associate Professor Shinichiro Kida studies, from a dynamics perspective, ocean currents between marginal seas such as the Sea of Japan and the Sea of Okhotsk and the open ocean.
The lab investigates seawater exchange through straits, deep gravity currents, and dynamical processes between rivers and the ocean.
Its main study areas are the Sea of Japan, the Sea of Okhotsk, and the Indonesian Archipelago, and it also develops river-ocean models.
In the Faculty of Interdisciplinary Science and Innovation, Associate Professor Kida teaches the research project course "Atmospheric and Ocean Science" in the Earth and Environment area.
Key terms
- Marginal sea
- A sea at the edge of a continent that is connected to the open ocean through straits or similar passages. The Sea of Japan and the Sea of Okhotsk are examples
- Deep gravity current
- A flow of water deep in the ocean driven by differences in water weight (density)
- Lagoon
- A shallow, partly enclosed body of water between a river mouth and the sea, where river freshwater and seawater flow in and out
ResearchResearch themes
The lab investigates the physical oceanography of marginal seas and the open ocean, including the Sea of Japan, the Sea of Okhotsk, and the Indonesian Archipelago, using numerical model calculations and observational data. Its themes also include dynamical processes between rivers and the ocean, and the links between dynamics and ecosystem cycles.
*Illustrative imageWater flow through straits
The lab studies seawater exchange through straits (strait exchange) and deep gravity currents. One paper used the sea level difference across the Tsushima Strait to show that the flow through the Sea of Japan has been increasing over the long term, and a numerical model suggested that the cause is a northward shift in the position of the Kuroshio.
*Illustrative imageWater movement between rivers and the sea
Dynamical processes between rivers and the ocean are one of the lab's research themes. A recent paper used an idealized numerical model to examine how a shallow lagoon between a river mouth and the sea affects the inflow and outflow of freshwater.
*Illustrative imageOcean dynamics and ecosystem cycles
Dynamics and ecosystem cycles are listed as one of the lab's research themes. The lab also studies phytoplankton blooms in coastal areas receiving river water, using a Lagrangian approach that follows water particles.
MembersFaculty
- Associate ProfessorShinichiro Kida
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Pacific-garbage-patch-map 2010 noaamdp” NOAA / Public domain (cropped)
- Water flow through straits: “Admiralty Chart No 3833 Singapore Strait, Published 1930” United Kingdom Hydrographic Office / Public domain (cropped)
- Water movement between rivers and the sea: “Coastal delta on Kodiak Island” Alaska Region U.S. Fish & Wildlife Service / Public domain (cropped)
- Ocean dynamics and ecosystem cycles: “NeXOS project - In Situ Ocean Observing Systems2” Glynn Gorick, Eric Delory, Jay Pearlman / CC BY-SA 4.0 (cropped)
- Related lab (Physical Oceanography Lab): “Sediment in the Bohai Sea, Yellow Sea, and East China Sea (MODIS )” MODIS Land Rapid Response Team, NASA GSFC / Public domain (cropped)
- Related lab (Geophysics Lab): “Tavurvur volcano edit” Taro Taylor edit by Richard Bartz / CC BY 2.0 (cropped)
- Related lab (Physical Geography Lab): “Malolo Barrier Reef 5” Maksym Kozlenko / CC BY-SA 4.0 (cropped)
- Related lab (Physical Geography Lab): “Aerial views of The Great Barrier Reef, Queensland (Ank Kumar) 01” Ank gsx / CC BY-SA 4.0 (cropped)
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