Development of Data Acquisition System for Space Weather Study

空间天气研究数据采集系统的开发

• 批准号: 13554016
• 负责人: YUMOTO Kiyohumi
• 金额: $ 8.58万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13554016/
• 关键词: Space weather; Polar disturbances; Equatorial Magnetometer Network; GPS; Space Environment Research; Circum-pan Pacific Magnetometer Network; Real time; Data acquisition system; 観測記録システムの開発; 全地球的規模の観測; 無停電電源; GPS衛星信号受信; フラッシュメモリカード; 半自動観測記録シス

In this research, we have developed a real-time MAGnetic Data Acquisition System of Circum-pan Pacific Magnetometer Network, i.e. MAGDAS/CPMN system in Kyushu University. On the basis of the results, new fluxgate-type magnetometers and their data acquisition system from overseas sites to Japan will be constructed in the SERC, Kyushu University until the end of 2004. Magnetic field digital data(H+δH, D+δD, Z+δZ, F+δF) are obtained with the sampling rate of 1/16 seconds, and then the averaged data are transferred from the overseas stations to the SERC, Japan in real time. The long-term inclinations(I) of the sensor axes are measured by two tilt-meters with 0.2 arc-sec resolution. The temperature (T) inside the sensor bloc is also measured. The GPS signals are received to adjust the standard time inside the data logger/transfer unit.These data are logging in the Compact Flash Memory Card of 1 GB. Every day, the data logger at an overseas site generates a file containing averaged 1-see magnetic data (H,D,Z,F) and a file containing the averaged 1-minmagnetic data and inclination and temperature data (I,T) of the magnetometer sensor. The file size of the 1-sec data is less than 1.5 MB/day. The file-size of the 1-min data is less than 50KB. If the communication line at the site does not allow a fast-enough connection, the data logger sends only the 1-min file to the SERC every day ; if the connection is fast enough, the data logger sends both the 1-min file and the 1-sec file to the SERC every day. In fact, the data transfer does not have to be on a daily basis : That is, the data-transfer interval can be set to any value between 10 minutes and 1 day, depending on the condition of the following communication lines. The MAGDAS data can be transferred from the overseas stations to the SERC, Japan, by using three possible ways; special line for INTERNET, telephone line and Satellite telephone lines.

在本研究中，我们在九州大学的成果基础上，开发了环太平洋磁力计网络的实时磁数据采集系统，即MAGDAS/CPMN系统，并开发了新型磁通门型磁力计及其数据采集系统。到2004年底，日本的海外站点将在九州大学SERC建设。 磁场数字数据（H+δH、D+δD、Z+δZ、以1/16秒的采样率获得F+δF），然后将平均数据从海外站实时传输到日本SERC，测量传感器轴的长期倾角（I）。通过两个分辨率为 0.2 角秒的倾斜计，还可以接收 GPS 信号来调整数据记录器/传输单元内的标准时间。 1 GB 紧凑型闪存卡 海外站点的数据记录器每天生成一个包含平均 1 次磁力数据（H、D、Z、F）的文件以及一个包含平均 1 分钟磁力数据和倾角的文件。磁力计传感器的温度数据（I、T） 1 秒数据的文件大小小于 1.5 MB/天 1 分钟数据的文件大小小于 50KB。如果现场的通信线路不允许足够快的连接，则数据记录器每天仅向 SERC 发送 1 分钟的文件；如果连接足够快，则数据记录器会同时发送 1 分钟的文件和每天向 SERC 发送 1 秒的文件 事实上，数据传输不必每天进行：也就是说，数据传输间隔可以设置为 10 分钟到 1 天之间的任何值，具体取决于情况。的条件MAGDAS数据可以通过三种可能的方式从海外站传输到日本SERC：互联网专线、电话线和卫星电话线。

项目成果

Yoshikawa, A., K.Yumoto, M.Shinohara, M.Itonaga: "Diagrammatic method to describe the self-inductive response of magnetosphere-ionosphere-atmosphere-Earth electromagneticallyc oupled system as a quasi-particle excitation"J. Geophys. Res.. 107,No.A5. SMP3-

Yoshikawa, A., K.Yumoto, M.Shinohara, M.Itonaga：“用图解方法描述磁层-电离层-大气-地球电磁耦合系统作为准粒子激励的自感响应”J。

Ohtani, S.-I., R.Yamaguchi, M.Nose, H.Kawano, M.Engebretson, K.Yumoto: "Quiet-time magnetotail dynamics and their implications for the substorm trigger"J. Geophys. Res.. 107, A2. SMP6-1-SMP6-10 (2002)

Ohtani, S.-I., R.Yamaguchi, M.Nose, H.Kawano, M.Engebretson, K.Yumoto：“安静时间磁尾动力学及其对亚暴触发的影响”J.

Yoshikawa, A., M.Itonaga, M.Shinohara, Y.Obana, K.Yumoto: "The Hall induced shielding effect on the geomagnetic pulsations"Geophys.Res.Lettr.. (in press). (2002)

Yoshikawa, A.、M.Itonaga、M.Shinohara、Y.Obana、K.Yumoto：“霍尔对地磁脉动的感应屏蔽效应”Geophys.Res.Lettr..（出版中）。

Shiokawa, K., K.Yumoto, J.V.Olson: "Multiple auroral brightenings and associated Pi2 pulsations"Geophys. Res. Lett.. vol.29,No.11. 32-1-32-4 (2002)

Shiokawa, K.、K.Yumoto、J.V.Olson：“多次极光增亮和相关的 Pi2 脉动”地球物理学。

Cli, P.J., C.T.Russell, J.Raeder, E.Zesta, K.Yumoto, H.Kawano, K.Kitamura, S.M.Petrinec, V.Angelopoulos.G.Le, M.B.Moldwin: "Propagation of the preliminary reverse impulse of sudden commencements to low latitudes"J.Geophys.Res.. 106,A9. 18,857-18,864 (2001

Cli, P.J., C.T.Russell, J.Raeder, E.Zesta, K.Yumoto, H.Kawano, K.Kitamura, S.M.Petrinec, V.Angelopoulos.G.Le, M.B.Moldwin：“突然的初步反向脉冲的传播