Dynamics Explorer-1 and -2 Magnetometer Data Analysis and Establishment of a Connection to SPAN (Space Physics Analysis Network)

Dynamics Explorer-1 和 -2 磁力计数据分析以及与 SPAN（空间物理分析网络）的连接建立

基本信息

批准号：
61420013
负责人：
SUGIURA Masahisa
金额：
$ 20.67万
依托单位：
Kyoto University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (A)
财政年份：
1986
资助国家：
日本
起止时间：
1986 至 1988
项目状态：
已结题

项目摘要

The Dynamics Explorer (DE) data analysis system built around a M-VAX II minicomputer was constructed during the first year. A network connection of this computer to SPAN was explored, and a temporary connection was made in 1986. A SPAN node was officially established in 1987, opening a way for rapid communication and data exchange between Japan and U.S.A. By this means considerable quantities of DE data have been transferred to our laboratory from NASA and other institutions. The transfer of the bulk of magnetometer data has been accomplished by using conventional or cassette magnetic tapes. The transfer of the magnetometer data and the construction of database have been proceeding smoothly. An optical disc equipment provided by NASA was installed in 1988. A considerable effort has been devoted to the development of software. Using the data analysis system so constructed, comprehensive analyses of data and theroretical investigations have been conducted and will be continued with an accelerated pace. The studies conducted thus far include: (a) a comparison of field-aligned currents at high and low altitudes as deduced from the DE-1 and -2 magnetometer observations made when the spacecraft were nearly in the same magnetic flux tube; (b) a comparison of the ionospheric Pedersen conductivity deduced from the DE-2 magnetic and electric field observations with estimates from a standard ionospheric model; (c) distinction of field-aligned currents of magnetospheric origin from those of ionosheric origin on the basis of DE-2 observations; (d) an investigation of field-aligned currents and electron precipitation in the dayside cusp region , in particular, in relation to interplanetary magnetic field conditions. The DE data analysis has played a significant role in education as well as in research through an active participation by graduate and undergraduate students, resulting in five Master of science theses.

第一年构建了围绕M-VAX II缩小计算机构建的Dynamics Explorer（DE）数据分析系统。探索了这台计算机的网络连接，并于1986年建立了临时连接。1987年正式建立了一个跨度节点，为日本和美国之间的快速通信和数据交换开辟了道路。通过这种方式，已经从NASA和其他机构转移了大量的DE数据。大部分磁力计数据的传输已通过使用常规或盒式磁带来完成。磁力计数据的传输和数据库的构建一直在顺利进行。 NASA提供的光盘设备于1988年安装。已经为软件的开发提供了相当大的努力。使用如此构建的数据分析系统，已经对数据进行了全面的分析和处理研究，并将以加速的速度继续进行。迄今为止进行的研究包括：（a）比较从DE-1和-2磁力计在航天器几乎在相同的磁通管中进行的DE-1和-2磁力计观测结果的比较。（b）比较从DE-2磁和电场观测到的电离层PEDERSEN电导率与标准电离层模型的估计值的比较；（c）基于DE-2观测值的磁层起源与离子层来源的场对齐电流的区别；（d）在几天的尖端区域，尤其是与行星际磁场条件有关的现场对齐电流和电子沉淀的研究。 DE数据分析通过研究生和本科生的积极参与在教育以及研究中发挥了重要作用，这导致了五个科学硕士。