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Nagamine Lab
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A lab that reads information about nature and human activity from rocks and satellite images.
AboutAbout the lab
Extracting the information hidden in nature and society and making it visible
The Nagamine Lab in the Emergent Systems Theory Division studies how to extract, analyze, and visualize the various kinds of information contained in natural materials and in the structures of human society.
Based on the results, the lab aims to clarify how those materials and structures came to be and what properties they have.
Its subjects include the composition of gases trapped in granite, microscope images of thin sections of rock, and images from Earth observation satellites.
The lab also conducts research comparing how addresses are written in Japan and the United States.
Key terms
- Gas chromatography
- An analytical method that separates a gas mixture into its components for examination. In this research, it is used to examine the composition of gases released from rock
- Polarizing microscope
- A microscope used to observe thin sections of rock and examine the distribution and properties of the minerals they contain
- Earth observation satellite
- An artificial satellite, such as LANDSAT, that takes high-resolution images of the Earth's surface
ResearchResearch themes
Natural materials and the structures of human society contain a great deal of information related to their origins and properties. This lab extracts and analyzes such information and visualizes the results in order to clarify how they came to be and what properties they have.
*Illustrative imageExploring the Origins of Rocks from Gases in Granite
Granite from Australia, Slovakia, and Japan is crushed in a sealed apparatus, and the carbon-containing gases released are analyzed by gas chromatography. The lab holds that, if the gases are in thermodynamic equilibrium, comparison with theory makes it possible to estimate the oxygen partial pressure and temperature.
*Illustrative imageAnalysis of Microscope Images of Rock Thin Sections
Identifying minerals by observing thin sections of rock under a polarizing microscope is laborious and time-consuming even for experts. The lab developed an algorithm that detects pleochroism and interference colors from multiple images taken at different angles, automating mineral identification and the calculation of mineral proportions.
*Illustrative imageAnalysis of Earth Observation Satellite Images
The number of Earth observation satellites that can produce high-resolution images, such as LANDSAT, has increased. Because maps are essential for image analysis, the lab aims to produce more precise land-use maps by combining satellite images with digital maps.
*Illustrative imageComparing Address Systems in Japan and the United States
Addresses are based fundamentally on blocks in Japan and on lines (streets) in the United States. To investigate which is more rational from an informatics perspective, the lab selects cities of similar size and compares the amount of information needed to represent all of their addresses.
MembersFaculty
- Associate ProfessorKoichiro Nagamine
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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: “Satellite image of Czech Republic in September 2003” 作者不詳 / Public domain (cropped)
- Exploring the Origins of Rocks from Gases in Granite: “Orbicular granite sample Mount Magnet Australia polished” The original uploader was Tillman at English Wikipedia. / CC BY 2.0 (cropped)
- Analysis of Microscope Images of Rock Thin Sections: “Thin section scan crossed polarizers Siilinjärvi R edit” kallerna / CC BY-SA 4.0 (cropped)
- Analysis of Earth Observation Satellite Images: “Island of Hawai'i - Landsat mosaic” Hawaii Land Cover Analysis project, NOAA Coastal Services Center / Public domain (cropped)
- Comparing Address Systems in Japan and the United States: “Map of the Original City of Philadelphia in 1682 by Thomas Holme” Thomas Holme / Public domain (cropped)
- Related lab (ALIFE-CORE Lab): “A starling murmuration at Prestwick - geograph.org.uk - 5991171” Walter Baxter / CC BY-SA 2.0 (cropped)
- Related lab (Simulation Science Lab): “This visualization shows what Einstein envisioned” Henze, NASA / Public domain (cropped)
- Related lab (Tsutsumi Lab): “Aurora environment 1600x900” Argonne National Laboratory / Public domain (cropped)
- Related lab (Higashi Lab): “Vanillin-3D-molecular-model-engraved-render-CAS-121-33-5” MolGod Scientific / CC BY-SA 4.0 (cropped)
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