A Numerical Model of the SEIS Leveling System Transfer Matrix and Resonances: Application to SEIS Rotational Seismology and Dynamic Ground Interaction
A Numerical Model of the SEIS Leveling System Transfer Matrix and Resonances: Application to SEIS Rotational Seismology and Dynamic Ground Interaction
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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
DOI：
10.1007/s11214-018-0555-9
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发表时间：
2018
影响因子：
10.3
通讯作者：
Fayon L
中科院分区：
文献类型：
--
作者：
Fayon L
SEIS 仪器的两个传感器（VBB 和 SP）都安装在机械水准系统（LVL）上，该系统必须确保在当前未知的当地条件下火星地面的水平放置，并提供地震仪与地面的机械耦合。我们开发了 LVL 结构的简化分析模型，以便通过预测其共振和传递函数来重现其机械行为。该模型以数值方式实现，可以估计 LVL 对火星上 VBB 和 SP 记录的数据的影响。该模型通过与实验室测量中观察到的水平共振（35 至 50 Hz 之间）进行比较来验证。事实证明，这些模式高度依赖于地面水平刚度和扭矩。为此，我们进行了反演研究，并将结果与火星风化层类似物中 LVL 脚穿透力的一些实验测量结果进行了比较。这一比较表明，分析模型可用于估计 InSight 着陆点的弹性地面特性。另一个应用包括对 LVL 上的 6 个传感器在其真实位置进行建模，同时考虑其灵敏度轴，以研究全局 SEIS 仪器在平移和旋转方面的性能。研究发现，高频地面旋转可以通过 SEIS 测量，并且与地面加速度相比，可以提供估计浅层地震表面波相速度的方法。最后，比较 HP3 穿透过程中主动地震实验的合成数据和 SEIS 旋转噪声，并将其用于瑞利相速度的反演。这证实了 SEIS 旋转地震学的前景，SEIS 将利用着陆后调试阶段获取的 SEIS 数据进行开发。
Both sensors of the SEIS instrument (VBBs and SPs) are mounted on the mechanical leveling system (LVL), which has to ensure a level placement on the Martian ground under currently unknown local conditions, and provide the mechanical coupling of the seismometers to the ground. We developed a simplified analytical model of the LVL structure in order to reproduce its mechanical behavior by predicting its resonances and transfer function. This model is implemented numerically and allows to estimate the effects of the LVL on the data recorded by the VBBs and SPs on Mars. The model is validated through comparison with the horizontal resonances (between 35 and 50 Hz) observed in laboratory measurements. These modes prove to be highly dependent of the ground horizontal stiffness and torque. For this reason, an inversion study is performed and the results are compared with some experimental measurements of the LVL feet’s penetration in a martian regolith analog. This comparison shows that the analytical model can be used to estimate the elastic ground properties of the InSight landing site. Another application consists in modeling the 6 sensors on the LVL at their real positions, also considering their sensitivity axes, to study the performances of the global SEIS instrument in translation and rotation. It is found that the high frequency ground rotation can be measured by SEIS and, when compared to the ground acceleration, can provide ways to estimate the phase velocity of the seismic surface waves at shallow depths. Finally, synthetic data from the active seismic experiment made during the HP3penetration and SEIS rotation noise are compared and used for an inversion of the Rayleigh phase velocity. This confirms the perspectives for rotational seismology with SEIS which will be developed with the SEIS data acquired during the commissioning phase after landing.
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影响因子：
10.3
作者：
P. Morgan;M. Grott;B. Knapmeyer‐Endrun;M. Golombek;P. Delage;P. Lognonné;S. Piqueux;I. Daubar;N. Murdoch;C. Charalambous;W. Pike;N. Müller;A. Hagermann;M. Siegler;R. Lichtenheldt;N. Teanby;S. Kedar
通讯作者：
P. Morgan;M. Grott;B. Knapmeyer‐Endrun;M. Golombek;P. Delage;P. Lognonné;S. Piqueux;I. Daubar;N. Murdoch;C. Charalambous;W. Pike;N. Müller;A. Hagermann;M. Siegler;R. Lichtenheldt;N. Teanby;S. Kedar
关于摆式地震仪对平动加速度、角加速度和向心加速度的非唯一敏感性
影响因子：
3
作者：
T. Forbriger
通讯作者：
T. Forbriger
点-接收器陆地地震数据不一致耦合条件的评估与补偿
DOI：
10.1190/1.1845295
发表时间：
2004
期刊：
Seg Technical Program Expanded Abstracts
影响因子：
--
作者：
C. Bagaini;C. Barajas
通讯作者：
C. Barajas
影响因子：
3.3
作者：
Bernauer, Moritz;Fichtner, Andreas;Igel, Heiner
通讯作者：
Igel, Heiner
使用 InSight HP3 穿透器生成的地震信号分析风化层特性
影响因子：
10.3
作者：
S. Kedar;J. Andrade;B. Banerdt;P. Delage;M. Golombek;M. Grott;T. Hudson;A. Kiely;M. Knapmeyer;B. Knapmeyer‐Endrun;C. Krause;T. Kawamura;P. Lognonné;T. Pike;Y. Ruan;T. Spohn;N. Teanby;J. Tromp;J. Wookey
通讯作者：
J. Wookey