用于震前电磁调查的VLF/LF设施网络

IF 1.8 4区地球科学 Q3 GEOSCIENCES, MULTIDISCIPLINARY

Geoscientific Instrumentation Methods and Data Systems Pub Date : 2023-11-30 DOI:10.5194/gi-12-231-2023

Patrick H. M. Galopeau, Ashanthi S. Maxworth, Mohammed Y. Boudjada, Hans U. Eichelberger, Mustapha Meftah, Pier F. Biagi, Konrad Schwingenschuh

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引用次数: 0

摘要

摘要。地震是最频繁发生的自然灾害之一。许多迹象表明，在这种悲剧性现象之前，地震-电离层扰动的存在。无线电技术是通过监测发射机和接收机之间的极低频(VLF, 3-30 kHz)和低频(LF, 30-300 kHz)亚电离层路径来探测地震电磁发射的重要工具(Hayakawa, 2015)。在这篇简短的通讯中，我们提出了一个VLF/LF网络来搜索地震电磁前兆的实现。所提出的系统由单极天线(包括前置放大器)、GPS接收器和记录装置组成。该系统将提供稳定的实时幅度和相位测量流，以及每日记录VLF/LF数据集。该系统的第一个实施是在奥地利的格拉茨完成的。第二个将在圭亚古尔(法国)，第三个将在卢旺达(法国)，第四个将在莫拉图瓦(斯里兰卡)。在不久的将来，我们计划扩大我们的网络，以加强监测和增加覆盖范围。

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A VLF/LF facility network for preseismic electromagnetic investigations

Abstract. Earthquakes are one of the most frequently occurring natural disasters. Many indications have been collected on the presence of seismo-ionospheric perturbations preceding such tragic phenomena. Radio techniques are the essential tools leading the detection of seismo-electromagnetic emissions by monitoring at very low-frequency (VLF, 3–30 kHz) and low-frequency (LF, 30–300 kHz) sub-ionospheric paths between transmitters and receivers (Hayakawa, 2015). In this brief communication, we present the implementation of a VLF/LF network to search for earthquake electromagnetic precursors. The proposed system is comprised of a monopole antenna including a preamplifier, a GPS receiver and a recording device. This system will deliver a steady stream of real-time amplitude and phase measurements as well as a daily recording VLF/LF data set. The first implementation of the system was done in Graz, Austria. The second one will be in Guyancourt (France), with a third one in Réunion (France) and a fourth one in Moratuwa (Sri Lanka). In the near future, we are planning to expand our network for enhanced monitoring and increased coverage.

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来源期刊

Geoscientific Instrumentation Methods and Data Systems GEOSCIENCES, MULTIDISCIPLINARYMETEOROLOGY-METEOROLOGY & ATMOSPHERIC SCIENCES

CiteScore

3.70

自引率

0.00%

发文量

审稿时长

37 weeks

期刊介绍： Geoscientific Instrumentation, Methods and Data Systems (GI) is an open-access interdisciplinary electronic journal for swift publication of original articles and short communications in the area of geoscientific instruments. It covers three main areas: (i) atmospheric and geospace sciences, (ii) earth science, and (iii) ocean science. A unique feature of the journal is the emphasis on synergy between science and technology that facilitates advances in GI. These advances include but are not limited to the following: concepts, design, and description of instrumentation and data systems; retrieval techniques of scientific products from measurements; calibration and data quality assessment; uncertainty in measurements; newly developed and planned research platforms and community instrumentation capabilities; major national and international field campaigns and observational research programs; new observational strategies to address societal needs in areas such as monitoring climate change and preventing natural disasters; networking of instruments for enhancing high temporal and spatial resolution of observations. GI has an innovative two-stage publication process involving the scientific discussion forum Geoscientific Instrumentation, Methods and Data Systems Discussions (GID), which has been designed to do the following: foster scientific discussion; maximize the effectiveness and transparency of scientific quality assurance; enable rapid publication; make scientific publications freely accessible.