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9 labs · 1 student voices
Other departments in Faculty of Science ›Faculties at Chiba University ›
Hitoshi Tomaru, Professor
1 student voices
Professor Hitoshi Tomaru's lab studies methane hydrate on the seafloor and the chemistry of water moving underground. Methane hydrate, an ice-like substance containing large amounts of methane, is widespread on the seafloor around Japan. In response to changes in the marine environment such as temperature and pressure, methane hydrate repeatedly forms and decomposes over shorter timescales than other geological phenomena. The lab also uses iodine isotopes dissolved in water to investigate by what paths and over what length of time materials and water move in subduction zones.
Yuji Ichiyama, Associate Professor
0 student voices
The Petrology and Mineralogy Lab reads the records of how rocks and minerals formed and changed. It investigates processes such as volcanic eruptions, the generation and solidification of magma, the development of the crust, and interactions between rocks and water. The aim is to understand how materials have circulated and evolved near the surface of the solid Earth. The lab's faculty members work on studies of Earth's deep interior, examining rocks from the crust to the mantle, and on studies of mineral-forming reactions using high-temperature, high-pressure experiments.
Noriko Tsumura, Associate Professor
0 student voices
The Crustal Structure Lab studies structures of various sizes in the lithosphere, from the crust to the uppermost mantle. Its main subject is faults. It combines geological field surveys and seismic surveys, observation of microstructures under the microscope, rock deformation experiments, and seismic wave analysis. The lab's faculty members study the seismological structure of island arcs and subduction zones, and the mechanisms of earthquake occurrence as seen from rock deformation experiments.
Koji Kameo, Professor
0 student voices
The Stratigraphy Lab studies the history of Earth's changes from the standpoint of biology and paleontology. It reconstructs past environments by combining paleontological information from fossils with geological and sedimentological information read from strata. The lab also works to elucidate the evolution of life, including the evolution of the lifestyles and behaviors of ancient organisms, with the addition of DNA information from organisms living today. The faculty members each study the following: changes in past ocean environments based on planktonic microfossils; the evolution of early life on Earth and the formation of resource ore deposits; and the history of paleoearthquakes and the reconstruction of paleoenvironments based on topography and geology.
Toshinori Sato, Professor
0 student voices
Prof. Sato's lab conducts research to understand why earthquakes occur. Around Japan, large earthquakes often occur at boundaries where plates subduct beneath the sea. Using artificial seismic sources and ocean bottom seismometers, the lab investigates the shape in which plates subduct and which locations are most prone to earthquakes. To understand the process by which earthquakes occur repeatedly, the lab is also developing methods for estimating fault slip and simulation models.
Masao Nakanishi, Professor
0 student voices
Prof. Nakanishi's lab studies how oceanic plates and oceanic crust form and develop. The lab focuses on magmatic activity of various scales, from petit-spots to large oceanic plateaus. The lab takes part in research cruises to collect data such as seafloor topography, geomagnetism, and gravity. The main study areas are the Pacific and Indian Oceans, and the lab also conducts joint research with researchers overseas.
Katsumi Hattori, Professor
0 student voices
The Hattori Lab studies electromagnetic phenomena that appear before crustal activity such as earthquakes and volcanic activity. Anomalies in geoelectric potential difference, the geomagnetic field, and the propagation of VLF-band radio waves have been reported to be observed in many parts of the world. The lab aims to clarify the mechanisms behind these phenomena and to realize a system for monitoring crustal activity, a kind of "crustal weather forecast." To that end, the lab also measures the electromagnetic structure of the subsurface and researches how to remove electromagnetic noise from trains and factories.
Nozomu Takeuchi, Professor
0 student voices
Professor Nozomu Takeuchi's lab studies snow and ice organisms that live in the world of snow and ice. Snow and ice organisms are special organisms adapted to low-temperature environments, and as organisms of an extreme environment they are of great biological interest. At the same time, they are important for understanding the effects of glacier melt and as clues to past environments recorded in ice cores. They are also considered key organisms in research on the ancient Earth, such as Snowball Earth, and on life elsewhere in the universe, such as on Mars and Europa.
Akitomo Yamamoto, Associate Professor
0 student voices
The lab of Associate Professor Akitomo Yamamoto studies changes in marine ecosystems and biogeochemical cycles associated with climate change and human activities. The ocean stores far more carbon than the atmosphere or land, and is thought to have played a major role in past changes in atmospheric carbon dioxide. The present-day ocean absorbs about a quarter of the carbon dioxide emitted by human activities. The lab runs numerical simulations of past, present, and future climate states and interprets the results together with observational data and paleoenvironmental data.
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