IF 11.3 1区 地球科学 Q1 ASTRONOMY & ASTROPHYSICS
P. Lognonné, W.B. Banerdt, J. Clinton, R. F. García, D. Giardini, B. Knapmeyer-Endrun, M. Panning, W.T. Pike
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引用次数: 9

摘要

从2019年初到2022年底,洞察号任务首次通过地震学探索了火星的浅层和深层内部。由于其地震仪的性能和地面机器人装置的质量,已检测到1319次地震事件,其中包括约90次远震地震,震级从2.5到4.7不等,至少有6次撞击,最大的撞击坑大于130米。这些地震的很大一部分发生在Cerberus Fossae,表明活跃的区域构造。压力引起的地震噪声和热流探头穿透的信号记录提供了着陆器下的地下模型。更深入的直接和二次体波相位走时、接收函数和面波分析提供了第一个火星内部模型,包括地壳厚度和地壳分层、地幔结构、热岩石圈厚度、岩心半径和状态。▪通过洞察号的SEIS(火星内部结构地震实验)实验和首次行星探测,火星内部结构和地震活动受到了约束。▪1300多个地震事件和地震噪声记录使地震学研究首次与地球和月球地震数据进行比较。地震传播时间和波形的反演提供了另一颗类地行星的第一个内部模型,直至核心。▪还记录了几次撞击,并从轨道上对撞击坑进行了成像,提供了火星上撞击动态的第一批数据。《地球与行星科学年鉴》第51卷的最终在线出版日期预计为2023年5月。修订后的估计数请参阅http://www.annualreviews.org/page/journal/pubdates。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Mars Seismology
For the first time, from early 2019 to the end of 2022, Mars’ shallow and deep interiors have been explored by seismology with the InSight mission. Thanks to the performances of its seismometers and the quality of their robotic installation on the ground, 1,319 seismic events have been detected, including about 90 marsquakes at teleseismic distances, with Mw from 2.5 to 4.7 and at least 6 impacts, the largest ones with craters larger than 130 m. A large fraction of these marsquakes occur in Cerberus Fossae, demonstrating active regional tectonics. Records of pressure-induced seismic noise and signals from the penetration of a heat flow probe have provided subsurface models below the lander. Deeper direct and secondary body wave phase travel time, receiver function, and surface wave analysis have provided the first interior models of Mars, including crustal thickness and crustal layering, mantle structure, thermal lithospheric thickness, and core radius and state. ▪ With InSight's SEIS (Seismic Experiment for Interior Structure of Mars) experiment and for the first time in planetary exploration, Mars’ internal structure and seismicity are constrained. ▪ More than 1,300 seismic events and seismic noise records enable the first comparative seismology studies together with Earth and lunar seismic data. ▪ Inversion of seismic travel times and waveforms provided the first interior model of another terrestrial planet, down to the core. ▪ Several impacts were also seismically recorded with their craters imaged from orbit, providing the first data on impact dynamic on Mars. Expected final online publication date for the Annual Review of Earth and Planetary Sciences, Volume 51 is May 2023. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
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来源期刊
Annual Review of Earth and Planetary Sciences
Annual Review of Earth and Planetary Sciences 地学天文-地球科学综合
CiteScore
25.10
自引率
0.00%
发文量
25
期刊介绍: Since its establishment in 1973, the Annual Review of Earth and Planetary Sciences has been dedicated to providing comprehensive coverage of advancements in the field. This esteemed publication examines various aspects of earth and planetary sciences, encompassing climate, environment, geological hazards, planet formation, and the evolution of life. To ensure wider accessibility, the latest volume of the journal has transitioned from a gated model to open access through the Subscribe to Open program by Annual Reviews. Consequently, all articles published in this volume are now available under the Creative Commons Attribution (CC BY) license.
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