Detection, Analysis, and Removal of Glitches From InSight's Seismic Data From Mars
Detection, Analysis, and Removal of Glitches From InSight's Seismic Data From Mars
复制标题
探测、分析和消除洞察号火星地震数据中的故障
作者：
John‐Robert Scholz;R. Widmer;P. Davis;P. Lognonné;B. Pinot;Raphaël F. Garcia;K. Hurst;L. Pou;F. Nimmo;S. Barkaoui;Sebastien de Raucourt;B. Knapmeyer‐Endrun;M. Knapmeyer;G. Orhand;N. Compaire;Arthur Cuvier;É. Beucler;Mickael Bonnin;R. Joshi;G. Sainton;É. Stutzmann;M. Schimmel;A. Horleston;M. Böse;S. Ceylan;J. Clinton;M. van Driel;T. Kawamura;Amir Khan;S. Stähler;D. Giardini;C. Charalambous;A. Stott;W. Pike;Ulrich R. Christensen;W. Banerdt
仪器包SEIS（内部结构地震实验）与三个非常宽带和三个短周期地震传感器安装在火星表面上，作为美国宇航局的洞察力发现使命的一部分。与地面设施相比，SEIS部署在非常恶劣的风和温度环境中，导致记录数据的质量不可避免地下降。原始数据中一个普遍存在的伪影是大量的瞬态单侧脉冲，通常伴有高频尖峰。我们称之为“毛刺”的这些脉冲可以被建模为仪器对加速度阶跃的响应，而尖峰可以被建模为对位移中的同步阶跃的响应。我们将故障主要归因于SEIS内部应力松弛，这是由仪器在火星白天暴露的大温度变化引起的。只有一小部分故障对应于由仪器或地面的微小倾斜引起的整个SEIS包的运动。在这项研究中，我们专注于毛刺+尖峰现象的分析，并提出如何这些信号可以自动检测和删除SEIS的原始数据。由于故障会影响许多标准的地震分析方法，如接收器功能，频谱分解和源反演，我们预计，火星地震活动性的研究以及火星的内部结构的研究应该受益于去故障的地震数据。
The instrument package SEIS (Seismic Experiment for Internal Structure) with the three very broadband and three short‐period seismic sensors is installed on the surface on Mars as part of NASA's InSight Discovery mission. When compared to terrestrial installations, SEIS is deployed in a very harsh wind and temperature environment that leads to inevitable degradation of the quality of the recorded data. One ubiquitous artifact in the raw data is an abundance of transient one‐sided pulses often accompanied by high‐frequency spikes. These pulses, which we term “glitches”, can be modeled as the response of the instrument to a step in acceleration, while the spikes can be modeled as the response to a simultaneous step in displacement. We attribute the glitches primarily to SEIS‐internal stress relaxations caused by the large temperature variations to which the instrument is exposed during a Martian day. Only a small fraction of glitches correspond to a motion of the SEIS package as a whole caused by minuscule tilts of either the instrument or the ground. In this study, we focus on the analysis of the glitch+spike phenomenon and present how these signals can be automatically detected and removed from SEIS's raw data. As glitches affect many standard seismological analysis methods such as receiver functions, spectral decomposition and source inversions, we anticipate that studies of the Martian seismicity as well as studies of Mars' internal structure should benefit from deglitched seismic data.
SEIS 水准测量系统传递矩阵和共振的数值模型：在 SEIS 旋转地震学和动态地面相互作用中的应用
影响因子：
10.3
作者：
Fayon L
通讯作者：
Fayon L
影响因子：
10.3
作者：
J. Clinton;D. Giardini;M. Böse;M. Böse;S. Ceylan;M. Driel;F. Euchner;R. Garcia;S. Kedar;Amir Khan;S. Stähler;B. Banerdt;P. Lognonné;É. Beucler;I. Daubar;M. Drilleau;M. Golombek;T. Kawamura;M. Knapmeyer;B. Knapmeyer‐Endrun;D. Mimoun;A. Mocquet;M. Panning;C. Perrin;N. Teanby
通讯作者：
J. Clinton;D. Giardini;M. Böse;M. Böse;S. Ceylan;M. Driel;F. Euchner;R. Garcia;S. Kedar;Amir Khan;S. Stähler;B. Banerdt;P. Lognonné;É. Beucler;I. Daubar;M. Drilleau;M. Golombek;T. Kawamura;M. Knapmeyer;B. Knapmeyer‐Endrun;D. Mimoun;A. Mocquet;M. Panning;C. Perrin;N. Teanby