Cooperative Research on Database Construction
The aim of the Solar-Terrestrial research is to obtain comprehensive understanding of variety of complex phenomena occurring in the space between Sun and Earth. To do so, analyses of various data taken by ground and satellite instruments are being done. Such data, however, are difficult to use efficiently without making database by processing properly. To make such databases, Geospace Research Center is conducting database production collaboration with researchers in STEL and other research institutes.
OMTI (Optical Mesosphere Thermosphere Imager) database. Two-dimensional airglow intensity, wind velocity, and temperature in the upper atmosphere measured by all-sky imagers and interferometers.
Sunspot relative numbers and latitude distribution of sunspots (the so-called butterfly diagram) observed at the National Astronomical Observatory of Japan. The database also contains solar images in white light, H-alpha, Calcium K-line, and images of the solar corona taken with a coronagraph; some dates back to 1910s.
Kagoshima VLF database. Very Low Frequency (VLF) / Extremely Low Frequency (ELF) data taken at Kagoshima Observatory, STEL, since 1976. Wave form of lightning whistlers and their frequency-time spectrum.