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Kinoshita Lab
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A lab that searches for the places where giant earthquakes occur by studying heat and water movement beneath the seafloor.

AboutAbout the lab
Understanding earthquake source regions through seafloor heat and water
Kinoshita Lab studies marine geophysics, measuring the movement of heat and water on the seafloor.
Its main focus is subduction zones, where an oceanic plate slides beneath a continent.
There, the lab investigates the temperature of the strata, the flow of groundwater below the seafloor, and the stress acting on the rocks.
The lab's research combines seafloor observation and drilling with numerical computation.
According to the Earthquake Research Institute's guidance, the lab is not recruiting graduate students for the 2027 academic year.
Key terms
- Subduction zone
- A place where an oceanic plate sinks beneath another plate. Large earthquakes tend to occur along the trench.
- Pore fluid pressure
- The pressure of the water filling the gaps in rocks and strata. When it rises, faults slip more easily.
- Drilling
- Boring a deep hole into the seafloor or the ground. It is used to retrieve samples of the strata and to place observation instruments in the hole.
ResearchResearch themes
The lab aims to capture the movement of subsurface water and heat with unprecedented precision. To understand the sites where giant earthquakes occur at ocean trenches, it combines seafloor observation and drilling with numerical modeling.
*Illustrative imageObserving Heat and Water on the Seafloor
Centered on observing and monitoring the movement of heat and water, the lab narrows down key locations using existing data such as topography and geological structure, and carries out agile seafloor observations.
*Illustrative imageUnderstanding Where Giant Earthquakes Occur
The lab focuses on pore fluid pressure, the most variable of the factors that govern the occurrence of megathrust earthquakes at trenches. Of particular interest are fluctuations linked to the ocean tides and the fault's behavior as it ruptures.
*Illustrative imageModeling with Drilling and Numerical Computation
Using drilling and seafloor cables, the lab surveys and monitors the distribution of heat and water on the seafloor. It combines the results with numerical computation to build models that capture the movement of subsurface water and heat.
MembersFaculty
- ProfessorMasataka KinoshitaPublications ↗
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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: “Chikyu 2” Gleam / CC BY-SA 3.0 (cropped)
- Observing Heat and Water on the Seafloor: “Blacksmoker in Atlantic Ocean” P. Rona / OAR/National Undersea Research Program (NURP); NOAA / Public domain (cropped)
- Understanding Where Giant Earthquakes Occur: “Nankai trough topographic” Peka / CC BY-SA 3.0 (cropped)
- Modeling with Drilling and Numerical Computation: “Chikyu 3” K's / CC BY-SA 3.0 (cropped)
- Related lab (Tanaka Lab): “Swiss GPS reference station SARG (Sargans) ( )” Kecko from Switzerland (Rheintal SG, the border valley between Switzerland and Austria) / CC BY 2.0 (cropped)
- Related lab (Araya Lab): “Interferenz-michelson” FL0 / CC BY-SA 3.0 (cropped)
- Related lab (Mochizuki Lab (Marine Seismology)): “Test des sismomètres OBS (Ocean Bottom Seismometer) en bassin d'essais (Ifremer )” Olivier Dugornay (Ifremer) / CC BY 4.0 (cropped)
- Related lab (Ishiyama Lab): “Arakura Fault of the Itoigawa-Shizuoka Tectonic Line” Sakaori (talk) / CC BY-SA 3.0 (cropped)
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