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1,223 labs · 43 student voices
Yasunobu Miyoshi, Professor
0 student voices
The Atmospheric Fluid Modeling Lab uses numerical simulation to study flows and atmospheric waves throughout the atmosphere up to an altitude of about 500 km. The motion of Earth's atmosphere differs greatly with altitude. In the upper atmosphere at 300 km, global-scale circulation varies on a one-day cycle along with the movement of the Sun. Around 50 km altitude, on the other hand, variations caused by global-scale waves with periods of several tens of days are observed. The lab investigates why circulation differs so much with altitude and what mechanisms cause changes in circulation.
Kensuke Nakajima, Associate Professor
0 student voices
The Atmospheric Fluid Dynamics Lab studies phenomena in the "middle atmosphere," which lies above the troposphere where clouds and rain form. The lab studies sudden stratospheric warming, in which temperatures rise abruptly over the polar regions in winter, and the ozone hole, in which ozone drops sharply over Antarctica in spring. The lab also studies the flows of Earth's oceans, and of the atmospheres and oceans of other planets such as Jupiter and Mars, using the approach of geophysical fluid dynamics. The lab's website invites anyone who wants to hear more to feel free to drop by the student room.
Huixin Liu, Professor
0 student voices
The Atmosphere-Ionosphere Coupling and Space Weather Science Lab studies phenomena in the upper atmosphere, roughly 80 to 1,000 km above the ground. This region is where the International Space Station, satellites, and rockets fly, and it serves as the gateway to space. Disturbances in the ionosphere and thermosphere can strongly affect radio communications, GPS, and satellite orbit control and lifetime, so they are central to space weather research. Using observations and simulations, the lab investigates influences from the Sun, influences from meteorological phenomena, and the coupling between plasma and the neutral atmosphere.
Takashi Mochizuki, Professor
0 student voices
The Meteorology and Climate Dynamics Lab studies a wide range of weather phenomena, from extreme weather events to abnormal weather and climate change, along with their interactions across scales. Using any of data analysis, numerical simulation, and field observation, the lab takes a comprehensive view of the interactions between the atmosphere and the ocean, sea ice, and land surface. Its main topics include linear precipitation systems, typhoons and explosive cyclones, monsoons, and predictions of near-future climate change on timescales from seasons to several years to a decade.
Futoshi Takahashi, Professor
0 student voices
The Deep Earth Physics Lab studies the motions inside Earth, the Moon, and other planets, as well as their origin and evolution. Inside Earth is a mantle made of rock, and inside that is a core made of molten iron. The flow of iron in the core generates Earth's magnetic field, and the lab investigates this mechanism using numerical simulations and observational data. The research covers not only Earth but also the magnetic fields of the Moon and Mercury.
Shigeo Yoshida, Associate Professor
0 student voices
The Earth Interior Dynamics Lab studies the dynamics of Earth's core and the smoothed particle hydrodynamics (SPH) method for simulating fluids. On the core, the lab investigates dynamo action and the structure of the inner core. The lab also uses numerical analysis to study how sand dunes and wind ripples form. The profile in the researcher information database also lists studies of core formation, hydrothermal circulation, and volcanic eruptions.
Takeshi Ikeda, Associate Professor
0 student voices
The Rock Cycle Science Lab studies the behavior of volcanoes, mass transfer in metamorphic rocks, temperature and pressure conditions, and reactions between hydrothermal fluids and rocks. The lab combines theory, experiments, analysis, and fieldwork, and most research themes are decided based on students' interests. Samples are collected in the field, rocks are made into thin sections and observed under a polarizing microscope, and the chemical compositions of minerals are analyzed by SEM-EDS and EPMA. The lab's website introduces it under the name "Rock Cycle Science Group."
Nobuo Geshi, Professor
0 student voices
The Volcano Science Lab studies the movement of magma underground and the dynamics of the volcanic eruptions it causes, through analysis of eruptive products. Its work includes geological surveys of volcanoes, analysis of the crystal and vesicle textures and chemical compositions of eruptive products, and development of mathematical models and analog experiments. When an eruption occurs, the lab rapidly analyzes the erupted material and quickly reads the mechanism behind the eruption currently under way. The lab's website introduces it under the name "Volcano Science Group."
Tetsuji Onoe, Professor
0 student voices
The Earth Evolutionary History Lab studies, based on fieldwork, the processes by which Earth's surface environments have formed. Lab members go out to mountains and coastlines to examine sedimentary rocks that formed thousands to hundreds of millions of years ago. The lab aims to determine when, where, and how these sediments were deposited, in order to understand environmental change on the scale of Earth's history. The lab also addresses the origins of the Japanese archipelago and the Pacific Ocean, investigating the history of Earth's changes using a fossil-based "time axis."
Yusuke Okazaki, Professor
0 student voices
The Paleoenvironmental Studies Lab conducts paleoenvironmental reconstruction, deciphering past climate change recorded in seafloor sediments. Over the past 800,000 years, Earth's climate has repeatedly fluctuated in what are called glacial–interglacial cycles. The lab classifies microfossils contained in seafloor sediments under the microscope, and uses changes in assemblage composition and chemical analyses to gain clues for deciphering the history of environmental and climate change at the time. Lab visits are accepted at any time.
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