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Satellite Resource Measurement Lab (Ocean Measurement Division)
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A lab that measures the ocean with satellites and radar to explore marine environments and ecosystems.
AboutAbout the lab
Measuring the ocean from space.
The Satellite Resource Measurement Lab uses observation tools such as satellites to study the vast ocean environment, mainly from the perspective of physics.
To study the vast ocean, observations from ships are not enough; wide-area observations by satellites and buoys are essential.
Using both ships and satellites, the lab conducts fieldwork in the Arctic, the North Pacific, and the seas around Hokkaido, and also studies how the ocean environment affects marine organisms.
The lab welcomes students who have a foundation in physics and want to learn oceanography and remote sensing.
Key terms
- Remote sensing
- A method of measuring a target from a distance using electromagnetic waves, with tools such as satellites and radar
- HF ocean radar
- An instrument that sends high-frequency radio waves from an antenna on land toward the sea surface and measures surface currents from the returning signals
- Hypoxic water mass
- A body of water in which dissolved oxygen has become very low. It can weaken or kill fish and shellfish on the seafloor
ResearchResearch themes
Using ocean observation tools, including satellite remote sensing, the lab studies the vast ocean environment from the perspective of physics. It also researches how that environment affects marine organisms, and methods for determining fundamental physical quantities at the sea surface.
*Illustrative imageMeasuring sea surface salinity with satellites
When sea surface salinity changes, the microwaves emitted from the sea surface change. Satellite observation that captures this is difficult, and Japan has not yet achieved it. To make sea surface salinity observation possible in Japan as well, the lab is advancing its research in cooperation with a space agency.
*Illustrative imageSalinity from river to sea, across land and ocean
Using satellite sea surface salinity data, the lab focuses not only on the open ocean but also on water flowing into the sea from large continental rivers. It investigates from a perspective that spans land and ocean, and recently has also been studying how river outflow affects marine organisms.
*Illustrative imageMeasuring currents in the Tsugaru Strait with HF ocean radar
HF ocean radar is a remote sensing instrument placed on land that measures the sea using electromagnetic waves. In cooperation with the Mutsu Institute of the Japan Agency for Marine-Earth Science and Technology, the lab uses radar installed along the coast of the Tsugaru Strait to study topics such as seasonal changes in the Tsugaru Warm Current.
*Illustrative imagePredicting hypoxic water masses in Funka Bay
In Funka Bay, a hypoxic water mass forms near the seafloor in summer and affects bottom-dwelling fish. Focusing on the convection that occurs in winter when the sea releases heat to the atmosphere, the lab has succeeded in predicting the amount of oxygen near the seafloor in summer six months in advance.
MembersFaculty
The members of the Satellite Resource Measurement Lab consist of faculty, doctoral students, and undergraduate students.
- Associate ProfessorHiroto Abe
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: “Aquarius Sea Surface Salinity” NASA's Goddard Space Flight Center Scientific Visualization Studio / Public domain (cropped)
- Measuring sea surface salinity with satellites: “CONAE SAC-D Aquarius integration 3 INVAP Argentina )” MRECIC ARG / CC BY-SA 2.0 (cropped)
- Salinity from river to sea, across land and ocean: “Amazon River sediments plume, Atlantic Ocean” Coordenação-Geral de Observação da Terra/INPE / CC BY-SA 2.0 (cropped)
- Measuring currents in the Tsugaru Strait with HF ocean radar: “Tsugaru Strait landsat 7” Photograph: NASA / Public domain (cropped)
- Predicting hypoxic water masses in Funka Bay: “Uchiura-Bay Fishing-boat” MaedaAkihiko / CC BY-SA 4.0 (cropped)
- Related lab (Ueno Lab (Marine Environmental Science Group)): “A Sea Aswirl With Chlorophyll (154699 - pce 20250712 lrg)” NASA Earth Observatory images by Wanmei Liang, using PACE data from NASA EOSDIS LANCE and GIBS/Worldview and the NASA Ocean Biology Distributed Active Archive Center OB.DAAC. Story by Lindsey Doermann. / Public domain (cropped)
- Related lab (Marine Environmental Science Lab (Associate Professor Hatsumi Nishikawa)): “Open- and Closed-Cell Clouds over the Pacific Ocean (MODIS)” MODIS Land Rapid Response Team, NASA GSFC / Public domain (cropped)
- Related lab (Acoustic Measurement Lab (Marine Measurement Science)): “See the depth for yourself^^ - geograph.org.uk - 381639” Des Colhoun / CC BY-SA 2.0 (cropped)
- Related lab (Marine Measurement Science Lab (Professor Yasuzumi Fujimori)): “Hakodate squid fishing 2005-08” Geomr / CC BY-SA 3.0 (cropped)
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