Detection of Marsquake Nests in InSight Data

IF 3.9 1区地球科学 Q1 GEOCHEMISTRY & GEOPHYSICS

Journal of Geophysical Research: Planets Pub Date : 2025-07-25 DOI:10.1029/2024JE008782

Raphael F. Garcia, Iona Clemente, Mélanie Drilleau, Alexander Stott, Ludovic Margerin, Philippe Lognonné, Mark Panning, Bruce Banerdt

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Abstract

The seismometer of the InSight NASA discovery mission recorded more than 1,300 seismic events on Mars, grouped into different families according to their frequency content. Here, we present a method to detect quake nests based on time domain correlation of long-duration waveforms (520 s). Event doublet candidates are first detected on the 2.4 Hz local resonance, and then validated by simultaneous detections on different components and different frequency bands. We provide a detailed analysis of the impact of noise on these detections. Our method revealed a triplet of very high frequency events (S0334b/S0334c/S0343a). These observations demonstrate that quake nests do occur on Mars, validating an active seismic area at 26° epicentral distance, which is interpreted as Cerberus Fossae, and that both impacts and quakes generate the very high frequency-type seismic events. These repeating waveforms could be used to test noise removal methods applied to InSight seismic data.

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InSight数据中地震巢的检测

美国宇航局“洞察号”探测任务的地震仪记录了火星上1300多个地震事件，并根据它们的频率内容分为不同的类别。本文提出了一种基于长历时波形（520s）的时域相关检测地震巢的方法。首先在2.4 Hz局部共振上检测候选事件双重，然后在不同分量和不同频带上同时检测验证。我们提供了噪声对这些检测的影响的详细分析。我们的方法发现了一个非常高频的三重事件（S0334b/S0334c/S0343a）。这些观测结果表明，火星上确实存在地震巢，证实了震中距离26°的活跃地震区，这被解释为Cerberus Fossae，并且撞击和地震都会产生非常高频率的地震事件。这些重复波形可用于测试InSight地震数据的降噪方法。

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来源期刊

Journal of Geophysical Research: Planets Earth and Planetary Sciences-Earth and Planetary Sciences (miscellaneous)

CiteScore

8.00

自引率

27.10%

发文量

254

期刊介绍： The Journal of Geophysical Research Planets is dedicated to the publication of new and original research in the broad field of planetary science. Manuscripts concerning planetary geology, geophysics, geochemistry, atmospheres, and dynamics are appropriate for the journal when they increase knowledge about the processes that affect Solar System objects. Manuscripts concerning other planetary systems, exoplanets or Earth are welcome when presented in a comparative planetology perspective. Studies in the field of astrobiology will be considered when they have immediate consequences for the interpretation of planetary data. JGR: Planets does not publish manuscripts that deal with future missions and instrumentation, nor those that are primarily of an engineering interest. Instrument, calibration or data processing papers may be appropriate for the journal, but only when accompanied by scientific analysis and interpretation that increases understanding of the studied object. A manuscript that describes a new method or technique would be acceptable for JGR: Planets if it contained new and relevant scientific results obtained using the method. Review articles are generally not appropriate for JGR: Planets, but they may be considered if they form an integral part of a special issue.