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Koyama Lab
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A lab that explores the subsurface of volcanoes using electromagnetic and magnetic methods.

AboutAbout the lab
Looking beneath volcanoes with electricity and magnetism
The Koyama Lab uses electromagnetic and magnetic methods to study the subsurface structure of volcanoes and other areas.
Its fields are volcano electromagnetism and solid Earth electromagnetism.
Using electromagnetic and magnetic survey methods, the lab estimates the state of the subsurface and investigates how volcanoes prepare for eruption, as well as the eruption phenomena themselves.
The lab also studies the dynamics of the Earth.
Key terms
- Electromagnetic survey
- A method that measures variations in the electric and magnetic fields at the ground surface and estimates subsurface structure from the distribution of electrical conductivity underground
- Magnetic survey
- A method that makes detailed measurements of the magnetic field on the ground surface or from the air and investigates subsurface structure from differences in the magnetization of underground rocks
ResearchResearch themes
The lab uses electromagnetic and magnetic survey methods to estimate subsurface structures, such as those beneath volcanoes. It studies the processes by which eruptions are prepared underground, eruption phenomena, and the dynamics of the Earth.
View More ↗MembersFaculty
- Associate ProfessorTakao KoyamaPublications ↗
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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: “Mount Mihara ( )” Guilhem Vellut / CC BY 2.0 (cropped)
- Exploring the subsurface of volcanoes with electromagnetic and magnetic surveys: “LEMI405” user:seleonov / Public domain (cropped)
- Related lab (Baba Lab (Ocean Hemisphere Research Center)): “Ocean Bathymetry (NESDIS Bathymetry)” NOAA / Public domain (cropped)
- Related lab (Shimizu Lab): “Mercury in color - Prockter07-edit1” National Aeronautics and Space Administration/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington / Public domain (cropped)
- Related lab (Takei Lab): “Olivine in polarizing light” Islam90 / CC BY-SA 4.0 (cropped)
- Related lab (Suzuki Lab): “Etna eruption seen from the International Space Station” NASA / Public domain (cropped)
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