CAWSES-II Space Weather International Collaborative Research Database in Japan (2009-2013)

These are edited with an intension to promote co-analyses of solar eruptive phenomena observed with different instruments in different wavelengths, and to inform when and which kind of phenomena appeared on the solar surface which affected our solar-terrestrial environment.

This database includes H-alpha images of solar active phenomena observed by the Flare Monitoring Telescope (FMT) at Hida Observatory, Kyoto University.

The FMT simultaneously obtains five kinds of solar full disk images; 
 (1) H-alpha line center image, 
 (2) H-alpha - 0.8 angstrom (blue shifted) image,
 (3) H-alpha + 0.8 angstrom (red shifted) image, 
 (4) H-alpha prominence image (with occulting disk), 
 (5) Sunspot image in a red continuum.

In this database, we supply the following two kinds of image data;

 1) Active Phenomena in H-alpha - 0.8 A 
   (Filament Activities and H-alpha Surges on the Solar Disk)

All transient phenomena, which were classified into middle or large size with the blue-shifted image data of FMT, are stored on the web-site and CD-Rs for each month. (The blue-shifted images are especially useful to indentify eruptive solar active phenomena which affects solar-terrestrial environment.)

By opening an event list for each month with a browser, you can know start and end times, position on the solar disk, type, and size of each event of the month. If you click an event on the list, you can move to the directory in which the image data of the event are stored.

Three kinds of image sets (H-alpha, H-alpha - 0.8, H-alpha + 0.8) for each event can be accessed from 5 min before the start time to 5min after the end time with the interval of 1 min. With these data, you can study the evolutional changes of shapes and dynamical structures of the event.

 2) Active Phenomena in Prominence Images 
   (Prominence Activities on the Solar Limb)

All phenomena, which show conspicuous activities in the limb-prominence images of FMT are stored on the web-site and CD-Rs for each month. (These limb events must be useful to study the radial or vertical structures of solar active phenomena.)

By opening an event list for each month with a browser, you can know start, maximum and end times, position on the solar limb, type of activity, height and length of each recorded phenomenon.

If you click an event on this list, you can move to the directory in which the image data of the event are stored. The two kinds of image sets (H-alpha prominence and H-alpha center) for each event can be accessed from 5 min before the start time to 5min after the end time with the interval of 1 min. With these data, you can study the evolutional changes of shapes and dynamical structures of prominences and chromospheric activities near the solar limb.

These event lists are accessible at the following URL.

http://www.kwasan.kyoto-u.ac.jp/observation/event/index_en.html

Reference: H.Kurokawa, K.Ishiura, G.Kimura, Y.Nakai, R.Kitai, Y.Funakoshi, and T.Shinkawa "Observations of Solar H alpha Filament Disappearances with a New Solar Flare-Monitoring-Telescope at Hida Observatory" J.Geomag.Geoelectr., 47, 1043-1052, 1995

The URL of public offering of these event lists:

http://www.kwasan.kyoto-u.ac.jp/observation/event/index_en.html