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27 labs · 3 student voices
Other departments in School of Science ›Faculties at Hokkaido University ›
Yoshio Murai, Professor
0 student voices
The Ocean Bottom Seismology and Tsunami Lab conducts research aimed at predicting the occurrence of megathrust earthquakes and tsunamis. Many of the earthquakes that occur on Earth originate beneath the seafloor, and large earthquakes at plate boundaries generate tsunamis that cause major damage. The lab investigates how they occur using two approaches: offshore earthquake observation with ocean bottom seismometers, and surveys of past and recent tsunamis. To advance this research, the lab conducts joint research with a variety of researchers and institutions in Japan and abroad.
Takeshi Hashimoto, Professor
0 student voices
The Subsurface Structure Lab studies the subsurface structure related to earthquakes and volcanoes, and how it changes over time. Its current focus is subsurface exploration using electromagnetic waves (the magnetotelluric method), combined with geomagnetic mapping and monitoring and numerical modeling. The human eye cannot see even 1 cm beneath the ground, but long-wavelength electromagnetic waves make it possible to image what lies below. The lab aims to link these results to the prediction and assessment of earthquakes and volcanic activity.
Hiroshi Aoyama, Professor
0 student voices
The Volcanic Activity Lab carries out observational research on volcanoes based on geophysical methods. It grew out of the Usu Volcano Observatory, established in 1977 for research on volcanic eruption prediction, and works with universities across Japan, the Japan Meteorological Agency, and others. It maintains observation facilities at the five major volcanoes in Hokkaido (Mt. Meakan, Mt. Tokachi, Mt. Tarumae, Mt. Usu, and Mt. Hokkaido-Komagatake) and at Noboribetsu volcano, and continues observations every day. The mission of this field is to catch the messages that volcanoes send and to scientifically predict how their activity will progress; in other words, to put volcanic eruption prediction into practical use.
Masanobu Yamamoto, Professor
0 student voices
The Environmental Change Analysis Lab aims to reconstruct how Earth's environment has changed and to identify the causes. It focuses on how humans and the environment have affected each other since the agricultural revolution 10,000 years ago and the industrial revolution 200 years ago. Using methods from paleoclimatology and geochemistry, the lab studies past environmental change as well as the present-day carbon and water cycles of the Earth, on both land and in the oceans. By treating past and present changes as one continuous story, the lab seeks to find principles useful for predicting the future of the global environment.
Keiichiro Ohshima, Visiting Professor
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The Ocean and Sea Ice Dynamics Unit studies ocean circulation and sea ice variability, focusing mainly on polar regions and seas with sea ice. When sea ice forms, it produces heavy, cold water that drives circulation in the deep ocean. In addition, sea ice reflects sunlight strongly, which amplifies climate variability and global warming. The unit combines observations, satellite remote sensing, and numerical modeling in its research.
Jun Nishioka, Professor
0 student voices
The Pan-Okhotsk Research Center studies a region stretching from Northeast Eurasia, centered on the Sea of Okhotsk, to the western North Pacific. In this region, the effects of warming appear sharply as a decline in seasonal sea ice zones, warming of the ocean's intermediate layer, and changes in snow and ice on land. The center aims to clarify the role this region plays in global environmental change and to properly assess the impacts it receives from climate change. It monitors environmental change through satellite observations, ship-based observations, and field surveys, and has built international research networks, including with Russia.
Shin Sugiyama, Professor
0 student voices
The Arctic Research Unit aims to clarify environmental change in Arctic physical oceanography, sea ice environments, the cryosphere, and climate. In the Arctic, temperatures are rising at a rate said to be four times the global average, and sea ice, glaciers and ice sheets, and permafrost are melting. These changes have major effects on marine and terrestrial life, and are also a cause of extreme weather such as the heavy snowfall and extreme heat that occur frequently in Japan. At the Arctic Research Center, the unit assesses the current state and makes future projections using diverse approaches such as field surveys, analysis of satellite data, and numerical modeling.
Ken Sawada, Professor
0 student voices
The Biological and Organic Geochemistry Lab conducts research aimed at clarifying the evolution and changes of the Earth's biosphere over geological timescales. Focusing mainly on strata (sediments) and fossils, the lab combines organic chemical analysis with geoscience field surveys. From these, the lab reconstructs past global environments and ecosystems, and seeks to clarify long-term environmental change and material cycling systems. The lab welcomes students who are strong in chemistry or geology and are interested in the history of life on Earth and in environmental and climate change.
Masashi Ikeda, Assistant Professor
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The Ikeda Lab studies past organisms and environments using molecular fossils (biomarkers) and organic-walled microfossils preserved in sediments. Focusing mainly on land-dwelling organisms, the lab works on reconstructing past ecosystems, changes in past environments, and the history of life on Earth. Using materials such as Cretaceous sedimentary rocks distributed in Hokkaido, the lab carries out field surveys and laboratory analyses.
Tsuyoshi Watanabe, Lecturer
0 student voices
The Coral Reef Global Environmental Science Lab studies variability in tropical and subtropical climate and marine environments, using coral reefs as its main field site. Its main clues are calcium carbonate produced by living organisms (biogenic carbonates), such as coral skeletons and shells. Analyzing chemical composition along the growth bands recorded in a skeleton makes it possible to estimate the environment at the time the skeleton formed. The lab also examines how organisms such as corals and bivalves have responded and adapted to environmental change.
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