Magsat任务的结果

IF 0.1 Q4 ENGINEERING, MULTIDISCIPLINARY Johns Hopkins Apl Technical Digest Pub Date : 1982-12-01 DOI:10.1190/1.1827060
R. Langel
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引用次数: 4

摘要

本文介绍了磁卫星对地磁场、地壳磁异常、外部电流系统引起的磁场以及地核、地幔和地核-地幔边界的分析结果。最小二乘势函数表明,在Magsat高度地磁场为30,000 ~ 50,000纳米特斯拉,外部源地磁场为0 ~ 1000纳米特斯拉,地壳源地磁场为0 ~ 50纳米特斯拉。长波磁异常与构造特征相关,有时反映居里等温线的波动,有时反映下地壳结构的变化。从区域数据分析中提供了详细的异常图,并描述了未来可能的航天器任务,以提高异常轮廓和强度的分辨率。
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Results from the Magsat mission
The results of analyses of the data gathered by Magsat on the geomagnetic field, crustal magnetic anomalies, fields arising from external current systems, and in investigations of the earth's core, mantle, and core-mantle boundary are presented. A least squares potential function showed that the geomagnetic field was 30,000-50,000 nanoteslas at the Magsat altitude, while fields from external sources were 0-1000 nanoteslas and those from crustal sources 0-50 nanoteslas. Long-wavelength magnetic anomalies were correlated with tectonic features, sometimes reflecting undulations in the Curie isotherm at other times changes in the structure of the lower crust. Detailed anomaly maps from regional data analyses are provided, and possible future spacecraft missions for improving the resolution of contours and strengths of the anomalies are described.
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来源期刊
Johns Hopkins Apl Technical Digest
Johns Hopkins Apl Technical Digest 工程技术-工程:综合
CiteScore
0.30
自引率
50.00%
发文量
0
审稿时长
>12 weeks
期刊介绍: The Johns Hopkins APL Technical Digest (ISSN 0270-5214) is an unclassified technical journal published quarterly under the auspices of the Johns Hopkins University Applied Physics Laboratory (APL). Published in print and online, the Digest seeks to communicate the work performed at APL to its sponsors and to the scientific and engineering communities, defense establishment, academia, and industry. The electronic version may include multimedia capabilities for enhanced visualization of some concepts. The following abstracting services currently cover the Johns Hopkins APL Technical Digest: Chemical Abstracts; Current Contents; Engineering Village; and the following CSA abstracts: Aerospace and High Technology Database; Aquatic Sciences and Fisheries Abstracts; Computer and Information Systems Abstracts; Electronics and Communications Abstracts; Mechanical and Transportation Engineering Abstracts; Meteorological and Geoastrophysical Abstracts; and Oceanic Abstracts.
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