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Mori Lab (Volcanic Fluids / Volcanic Chemistry)
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The lab uses volcanic gas measurement technology to study how magma behaves and how eruptions work.
AboutAbout the lab
Probing subsurface magma through volcanic gases
The Mori Lab, part of the Geochemical Research Center in the Graduate School of Science, studies volcanoes using volcanic gases as clues.
The composition and emission rate of volcanic gases reflect the state of the magma and hydrothermal system underground.
The lab focuses on developing new methods for measuring volcanic gases from a distance, and conducts observations at volcanoes across Japan.
It aims to move closer to understanding how gas escapes from magma and how eruptions work.
Key terms
- Hydrothermal system
- The region beneath a volcano where water and steam heated by magma circulate
- Infrared spectroscopy
- A method that examines which wavelengths of infrared light a substance absorbs, in order to determine what components are present and in what amounts
- Ultraviolet spectrometer
- An instrument that separates ultraviolet light by wavelength and measures it. It can determine the amount of gases that absorb ultraviolet light, such as sulfur dioxide
ResearchResearch themes
The lab investigates the state of subsurface magma and hydrothermal systems from changes in the chemical composition and emission rate of volcanic gases. It develops new observation methods and uses them to observe volatile components of volcanoes.
*Illustrative imageMeasuring volcanic gas composition from a distance
For situations where the crater or fumaroles cannot be approached, the lab is developing methods that use infrared spectroscopy to measure volcanic gas composition remotely. It has become possible to measure sulfur dioxide, hydrogen chloride, carbon dioxide, and other gases from several hundred meters to several kilometers away.
*Illustrative imageMeasuring gas emission with a portable instrument
Together with several research groups in Japan, the lab developed a portable instrument that uses an ultracompact ultraviolet spectrometer to measure the amount of sulfur dioxide emitted from volcanoes. The lab uses this instrument to observe volcanoes across Japan.
*Illustrative imageImaging sulfur dioxide in volcanic plumes
The lab developed a method for imaging the distribution of sulfur dioxide in volcanic plumes. It captures changes in gas emission on a timescale of seconds, allowing the way gas is released to be examined in greater detail.
MembersFaculty
- Associate ProfessorToshiya MoriPublications ↗
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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 Aso acid lake seen from helicopter by ET” Wikiwanito / CC BY-SA 3.0 (cropped)
- Measuring volcanic gas composition from a distance: “Mt.Aso crater” Takasunrise0921 / CC BY 2.5 (cropped)
- Measuring gas emission with a portable instrument: “Mount Meakan seen from the NE (2005)” コムケ / CC BY-SA 3.0 (cropped)
- Imaging sulfur dioxide in volcanic plumes: “Sakurajima - Sakurajima I 4” lumoplank / CC0 (cropped)
- Related lab (Maeno Lab (Volcano Research Center)): “Shinmoe-dake Volcano Erupts on Kyushu Feb 2011” Robert Simmon / Public domain (cropped)
- Related lab (Molecular Geochemistry Lab (MGL)): “Diamond by Peter Smyth” Peter Smyth / CC0 (cropped)
- Related lab (Takigawa Lab): “Allende meteorite ( )” Steve Jurvetson / CC BY 2.0 (cropped)
- Related lab (Yokoyama Lab (Center for High-Resolution Environmental Analysis)): “CSIRO ScienceImage 518 Air Bubbles Trapped in Ice” CSIRO / CC BY 3.0 (cropped)
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