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Geodesy Lab
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The lab precisely measures the movements of the Earth using gravity and GPS.

AboutAbout the lab
Precisely measuring the slightest movements of the ground
The Geodesy Lab studies crustal deformation and Earth tides through continuous observations with gravimeters, tiltmeters, and strainmeters, and estimates subsurface structure through gravity measurements.
The lab also carries out precise positioning with space geodetic techniques such as GPS and SAR, research on the Earth's gravity field and its variations using satellite data, and development of the necessary observation instruments.
This subfield involves the Department of Geophysics and the Earthquake Prediction Center of the Disaster Prevention Research Institute, which cooperate in supervising students.
The Earth Measurement Research Division of the Disaster Prevention Research Institute participates as a field within this lab.
Key terms
- Crustal deformation
- The slow or sudden movement and deformation of the ground caused by earthquakes, volcanic activity, and other processes
- Earth tides
- The phenomenon in which the solid Earth itself stretches and contracts slightly due to the gravitational pull of the Moon and the Sun
- SAR
- Synthetic aperture radar: a radar that observes the ground surface by sending radio waves from a satellite. It can measure even slight changes in the surface
ResearchResearch themes
Using continuous observations with gravimeters and tiltmeters, gravity measurements, space geodetic techniques such as GPS and SAR, and satellite data, the lab studies crustal deformation, Earth tides, subsurface structure, and the Earth's gravity field.
View More ↗MembersFaculty
The Geodesy Lab consists of faculty, doctoral and master's students, and fourth-year undergraduates.As of 2026
- ProfessorShin'ichi Miyazaki
- ProfessorShigekazu Kusumoto
- ProfessorTakuya Nishimura
- ProfessorYukitoshi Fukahata
- Associate ProfessorMakiko Ohtani
- Associate ProfessorMasayuki Kano
- Associate ProfessorPeiliang Xu
- Associate ProfessorTomoaki Nishikawa
- Assistant ProfessorTakahito Kazama
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: “GNSS reference station and road to Fivefinger Strand” Rorosyfingers / CC BY-SA 4.0 (cropped)
- Crustal Deformation and the Earth's Gravity Field: “Mendenhall gravimeter pendulums” G. R. Putnam / Public domain (cropped)
- Related lab (Volcano Physics Lab): “Mount Aso views ( )” Raita Futo from Tokyo, Japan / CC BY 2.0 (cropped)
- Related lab (Geothermal Sciences (Ishii) Lab): “Japan Kyushu, Beppu hot spring 05” Marie-Sophie Mejan / CC BY 4.0 (cropped)
- Related lab (Earth's Interior Electromagnetism Lab (Toh, World Data Center for Geomagnetism)): “"The Natural Wonder of the South- Taal Volcano"” Robertmarrel / CC BY-SA 4.0 (cropped)
- Related lab (Seismology Lab): “Historischer Seismograph” Ilyacadiz / CC BY-SA 4.0 (cropped)
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