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Other departments in Faculty of Science ›Faculties at Tohoku University ›

Yasufumi Iryu, Professor
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The Paleoenvironmental Change and Evolutionary Paleontology Lab reconstructs past Earth surface environments from the skeletons and shells of corals, bivalves, brachiopods, and other organisms, as well as from carbonate sediments. Using methods from paleontology, sedimentology, and geochemistry, the lab investigates environmental change over a variety of timescales. Behind the research is the view that, to predict how the Earth as a whole will respond to rapidly advancing global warming, it is necessary to reconstruct past environmental changes and clarify their causal relationships. On the lab's website, it is introduced under the name "Carbonate Sedimentology and Geochemistry Group."

Reishi Takashima, Professor
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The Geology and Paleoceanography Lab studies past environmental change, mainly in the Cretaceous, through chemical analysis of strata and analysis of fossil assemblages. It focuses in particular on the oceans of the Cretaceous, investigating the causes and progression of oceanic anoxic events, in which the sea lost its oxygen. The lab also works on precisely determining the ages of strata, correlating volcanic ash layers, and estimating marine environments using foraminifera.

Hiroyuki Nagahama, Professor
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The Fault and Crustal Mechanics Lab studies earthquakes and rock deformation. Earthquakes and crustal deformation are complex deformation processes of the crust that occur in non-equilibrium systems, where energy is not conserved. By combining mathematical-physical theory, laboratory rock experiments, and field geological surveys, the lab links the deformation of rocks and minerals to crustal deformation and seismic activity across the Japanese Islands. The lab also studies the relationship between fluctuations in atmospheric radon concentration and earthquakes, as well as the postseismic deformation that follows major earthquakes.

Tatsuki Tsujimori, Professor
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The Crustal Evolution Lab (KREATE) takes a materials science approach to study reactions between rocks and fluids in the lithosphere, material transport, and the geological evolution of planets. By combining field geological observation with methods from petrology, mineralogy, and geochemistry, as well as numerical simulation and experiments, the lab aims to understand a wide range of geological processes, not only those on Earth. It is a new lab, established in December 2024 in the Geoenvironmental Sciences Division of the Graduate School of Science, Tohoku University. The lab welcomes students, postdoctoral researchers, and collaborators from around the world.

Kazuaki Hori, Professor
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The Geomorphology and Physical Geography Lab studies how various landforms, such as coasts, rivers, slopes, and tectonic landforms, have formed. Using a range of methods, including geomorphology, Quaternary geology, and geophysics, the lab clarifies the developmental history and formation processes of landforms. Through this basic research, the lab also works on determining when past earthquakes occurred on active faults and on investigating shallow structures a few kilometers underground. The lab has close ties with the Terrestrial Seismology and Volcanology research division at the International Research Institute of Disaster Science, Tohoku University, and holds lab seminars and conducts research together with it.

Tomoki Nakaya, Professor
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The Human Geography Lab studies geographic disparities in health, food production and purchasing in Mongolia, and methods of geographic information science. Using cartographic techniques and spatial statistics, the lab investigates the relationships between society and space that underlie regional differences. The lab respects student independence: for bachelor's and master's theses, students pursue research on themes they choose themselves. The lab works jointly with the Environmental Geography group (Nakaya Lab) in the Graduate School of Environmental Studies.

Shinji Toda, Professor
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The Natural Disaster Science Lab studies how earthquakes and tsunamis occur, using landforms, geological strata, and satellite observation. The lab's research rests on three pillars: surveys of coastal terraces and active faults, surveys of tsunami deposits, and measurement of landform change using satellite data. By combining field surveys with numerical calculation, the lab works to understand the magnitude of past earthquakes and tsunamis and the mechanisms by which earthquakes occur. In the faculty list of the Department of Earth Science, the lab is listed as an affiliated division (Natural Disaster Science Division) of the International Research Institute of Disaster Science.
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