Swarm-A卫星对大西洋中脊磁异常的解释

IF 0.9 4区 地球科学 Q4 GEOCHEMISTRY & GEOPHYSICS
Geofizika Pub Date : 2022-03-31 DOI:10.15233/gfz.2022.39.3
Ilkin Özsöz, Ankaya Pamukçu
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引用次数: 0

摘要

本文讨论了Swarm-A卫星在大西洋中脊测得的磁资料的处理方法和解释。数据格式转换后的数据处理过程分为四个阶段。第一阶段是选取Kp指数小于1的数据。其次,通过IGRF模型从测量数据中减去主磁场。这一步之后是去除与卫星轨迹相关的趋势。最后一步是通过还原到极点(RTP)来消除磁场的偶极性质。尽管如此,RTP过程可能会在大的研究区域和低纬度地区造成误解。因此,分析信号(AS)的幅度被用作RTP的替代。通过AS异常、测深、热流和构造图对磁异常进行了定性解释。定量地解释了水深和热流的相关系数。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Interpretation of the magnetic anomalies over the Mid-Atlantic Ocean Ridge using Swarm-A satellite
The procedures and interpretation of the magnetic data measured over the Mid-Atlantic Ocean Ridge by Swarm-A satellite is discussed in this paper. The data processing procedure has four phases after the data format conversion. The first phase is the selecting data whose Kp index is lower than 1. Secondly, the main magnetic field should be subtracted from the measured data for example through the IGRF model. This step is followed by removing trend, related to the satellite trajectory. The final step is eliminating the dipole nature of the magnetic field via Reduction to the Pole (RTP). Nonetheless, the RTP process might cause misinterpretation over the large study area and lower latitudes. Therefore, the amplitude of the analytic signal (AS) is used as an alternative to the RTP. The qualitative interpretation of the magnetic anomaly is conducted via AS anomaly, bathymetry, heat flow and tectonic map. Quantitatively correlation coefficients of bathymetry and heat flow with respect to AS are interpreted.
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来源期刊
Geofizika
Geofizika 地学-地球化学与地球物理
CiteScore
1.60
自引率
0.00%
发文量
17
审稿时长
>12 weeks
期刊介绍: The Geofizika journal succeeds the Papers series (Radovi), which has been published since 1923 at the Geophysical Institute in Zagreb (current the Department of Geophysics, Faculty of Science, University of Zagreb). Geofizika publishes contributions dealing with physics of the atmosphere, the sea and the Earth''s interior.
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