Reports on the XIth IAGA Workshop on Geomagnetic Observatory Instruments, Data Acquisition and Processing held at Kakioka/Tsukuba, Japan, in 2004
Masami Okada，Takeshi Toya, Katsuharu Koike, Takeshi Owada，Shinzaburo Nakajima, Nobuaki Shigeno, Fujio Muromatsu, Takashi Ookawa, Tetsuo Tokumoto, Takao Imaizumi, Tomomi Tanaka, Masahiro Sawada, Yuki Iwase, Yoshitomo Ikoma, Megumi Kaito, Tetsuji Koike, Mayumi Akutagawa, Nobuyuki Kumasaka, Akihito Kameya, Tadayuki Uesugi, Takanori Akashi, Hiroshi Takahashi, Hiroshi Hasegawa, Norihisa Ishida, Mitsugu Yokoyama, Katsuumi Yamagishi, Youko Akita, Noriaki Kumagaya, Hirohide Iwakata, Mitiyo Ose, Takashi Koide, Yoshiki Ishii, Ikuko Fujii
Abstract
The 11th IAGA Workshop on Geomagnetic Observatory Instruments, Data Acquisition and Processing started at Kakioka Magnetic Observatory, KMO, where intercomparisons and tests of geomagnetic instruments and measurement training were carried out from November 9 through 12, then the scientific symposium was held from 15 through 17 at the Tsukuba Center for Institutes. From 32 countries and states 147 members participated in the workshop. We, members of KMO, engaged in hosting the workshop as staffs of the LOC Kakioka Office and compiled our contributions in this report, including technical results of the measurement session which have been reported in the proceedings for the workshop.
KMO provided for intercomparison measurement four stable pillars for which we carefully observed pillar differences before and after the measurement session and confirmed stabilities of them. Noise on geomagnetism due to bus and cars moving in near field had been surveyed and we restrained to drive in KMO area during intercomparison measurement.
Nineteen DI-flux theodolites and ten absolute scalar magnetometers were operated by the participants 109 times and 27 times, respectively, and intercompared those measurement data. The absolute scalar magnetometers were also tested under the artificially applied alternative magnetic field and the gyromagnetic ratio of proton adopted in the instrument was estimated. The ratio in the resolution of IAGA in 1960 is probably used in the half of magnetometers, and the value for others is close to the one in the recommendation of CODATA of 2002. Three variometers were operated by KMO's staff for long-term stability and thermal tests in the pre-workshop of about one month. The training course on geomagnetic measurement was opened for younger people and there were almost twenty audiences all the time in the lectures by Dr. J. Rasson and Dr. O. Rasmussen. They explained the basics and principles of magnetic observatory measurements for three half-days and instructed them practical DI-flux measurements for two half-days.
The scientific session consisted of six sub-sessions as follow;
And 45 and 70 papers were presented in oral and poster, respectively. Tentative results of measurement session were reported at the end panel. Those presentations have been issued as proceedings of the workshop.
Events, opening ceremony, welcome party, barbecue lunch and banquet, and four excursions, hiking to Mt. Tsukuba, bus excursion to Fukuroda Waterfall and Kasama Pottery town, and short tours to institutes in Tsukuba were held and many members and accompanies attended for enjoying and exchanging friendship. The LOC arranged shuttle buses between about 30km from hotels in Tsukuba to KMO and lunch at KMO during the measurement session, as KMO is located at a small town in the countryside and the most of participants lodged in Tsukuba-city.
Received 25 December 2005; Accepted 28 December 2005
