1. Name of Database: MAGnetic Data Acqusition System/Circum-pan Pacific Magnetometer Network Data 2. Institution: Space Environment Research Center, Kyushu University 3. Contents of Database: MAGDAS (Magnetic Data Acquisition System) data are obtained from the Circum-pan Pacific Magnetometer Network (CPMN) during the CAWSES period (2003 -2008). Magnetometers of the CPMN were installed at 50 stations all over the world during the STEP period, which are along the 210 degree magnetic meridian including East Asia, Pacific Ocean and Micronesian Islands, and South America and Africa at the different longitudes. The MAGDAS data consist from 3 components of the magnetic variations (H, D, Z) with 1-second sampling rate. Users can see summary plots by WWW, and get 1-sec digital data by request to PI (K. Yumoto). This database is very useful for investigations of the Earth Magnetism and Solar-Terrestrial Physics in term of a global disturbance of the magnetic field on the ground. 4. Examples of Database: (a) ASCII DATA CAN 1999 2 18 LT= 10 DT= 1 CPM H= 1.17e-002 D= 1.17e-002 Z= 1.17e-002 nT/LSB DCR3MO S/N 3 Ver3.3 (1) sec of day (2) H-comp (3) D-comp (4) Z-comp =================================================== 00001 65.2218 -16.7308 8.0028 00002 65.1741 -16.7459 7.9560 00003 65.2536 -16.7308 8.0028 00004 65.2377 -16.7308 7.9248 00005 65.2377 -16.7157 7.8936 (b) Summary plot 5. Contact: Prof. K. Yumoto Space Environment Research Center, Kyushu University 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581, Japan Tel/Fax: 092-642-4403 or 2673 E-mail: yumoto[AT]geo.kyushu-u.ac.jp 6. Public Offering of Database: The MAGDAS data can be provided for all the scientific purpose. Users can see summary plots of 1day stack plot for all the stations and monthly plot for each station by WWW http://denji102.geo.kyushu-u.ac.jp/denji/obs/cpmn/cpmn_obs_e.html If users need the digital data for their computational analysis, we can provide the 1-sec or 1-min digital data by request to PI (K. Yumoto; yumoto[AT]geo.kyushu-u.ac.jp) for collaborative works.