FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3155667039> ?p ?o ?g. }

• W3155667039 abstract "&lt;p&gt;The InSight seismometer SEIS recorded tens of high-frequency (1.5-5Hz; HF) and Very-high frequency (1.5-15Hz, VF) Martian events. They are characterized by two temporally separated arrivals with a gradual beginning, a broad maximum and a very long decay. This observation is consistent with a long-range propagation of seismic P and S waves in a heterogeneous crust (Van Driel et al., accepted). To examine this hypothesis, first, we employ basic multiple-scattering concepts on the two groups of events. Then, we propose a full envelope modeling based on elastic radiative transport in a half-space. The model parametrization and the radiative transfer equations are presented in (Lognonn&amp;#233;, P., et al. (2020) and Margerin, L., (2017)). We find that both HF and VF signals are depolarized and verify Gaussian statistics, at the exception of the ballistic primary and secondary arrivals. These properties agree with a multiple-scattering origin. For VF events, the energy partitioning ratio V&lt;sup&gt;2&lt;/sup&gt;/H&lt;sup&gt;2&lt;/sup&gt;&amp;#160;between horizontal and vertical components is frequency dependent. We observe that V&lt;sup&gt;2&lt;/sup&gt;/H&lt;sup&gt;2 &lt;/sup&gt;is maximum at the so-called &amp;#8216;2.4Hz resonance&amp;#8217; (~2) and decreases rapidly at frequencies higher than 5Hz (~0.1) then i remains relatively low up to frequencies of 15Hz at least. HF events do not exhibit a decrease of V&lt;sup&gt;2&lt;/sup&gt;/H&lt;sup&gt;2 &lt;/sup&gt;at high frequencies however further analysis reveals a strong correlation between energy partitioning and signal-to-noise (S/N) ratio for HF events. This observation suggests that a part of the difference between the HF and VF events can to some extent be explained by noise contamination. The generally low V&lt;sup&gt;2&lt;/sup&gt;/H&lt;sup&gt;2&amp;#160;&lt;/sup&gt;ratio of VF events is reminiscent of the response of unconsolidated layers, as observed at Pinyon Flats Observatory on Earth (Margerin, L., et al. (2009)). Unlike earthquakes and moonquakes observed in the same frequency band, the delay time measured from onset to peak of the secondary arrival of HF and VF events is frequency-independent. This suggests that the spectrum of heterogeneity of the Martian crust is smooth. We observe that, for HF and VF events, the delay time is weakly dependent on hypocentral distance. This observation cannot be reconciled with the predictions of multiple-scattering theories in a statistically homogeneous medium however it suggests a stratification of heterogeneity in the Martian lithosphere. The coda quality factor Q&lt;sub&gt;c&lt;/sub&gt;&amp;#160;of VF events is high and shows a linear increase with frequency. Q&lt;sub&gt;c&lt;/sub&gt;&amp;#160;of HF events is higher but it may be overestimated due to the noise contamination. The linear frequency dependence of Q&lt;sub&gt;c&lt;/sub&gt;&amp;#160;is strongly reminiscent of the leakage effect in a crustal scattering waveguide and suggests that part of the observed coda attenuation may be of structural origin. The full envelope modeling of the S0334a VF event results shows that the estimated value of the diffusivity (&amp;#8771; 619 km&lt;sup&gt;2&lt;/sup&gt;/s) is almost&amp;#160;6 times greater than for the S0128a VF event (&amp;#8771; 90 km&lt;sup&gt;2&lt;/sup&gt;/s). This observation again suggests a stratification of heterogeneity. In future works, we will perform the full envelope modeling of all the VF selected events at different frequencies to constrain a 1D attenuation and diffusion model of the Martian crust.&lt;/p&gt;" @default.
• W3155667039 created "2021-04-26" @default.
• W3155667039 creator A5000292882 @default.
• W3155667039 creator A5004624498 @default.
• W3155667039 creator A5021705531 @default.
• W3155667039 creator A5029320342 @default.
• W3155667039 creator A5055340335 @default.
• W3155667039 creator A5056240141 @default.
• W3155667039 creator A5058980527 @default.
• W3155667039 creator A5060084575 @default.
• W3155667039 creator A5082149268 @default.
• W3155667039 creator A5090166228 @default.
• W3155667039 date "2021-03-04" @default.
• W3155667039 modified "2023-09-27" @default.
• W3155667039 title "Energetic characteristics of High Frequency (HF) and Very High Frequency (VF) Martian events" @default.
• W3155667039 doi "https://doi.org/10.5194/egusphere-egu21-14609" @default.
• W3155667039 hasPublicationYear "2021" @default.
• W3155667039 type Work @default.
• W3155667039 sameAs 3155667039 @default.
• W3155667039 citedByCount "0" @default.
• W3155667039 crossrefType "posted-content" @default.
• W3155667039 hasAuthorship W3155667039A5000292882 @default.
• W3155667039 hasAuthorship W3155667039A5004624498 @default.
• W3155667039 hasAuthorship W3155667039A5021705531 @default.
• W3155667039 hasAuthorship W3155667039A5029320342 @default.
• W3155667039 hasAuthorship W3155667039A5055340335 @default.
• W3155667039 hasAuthorship W3155667039A5056240141 @default.
• W3155667039 hasAuthorship W3155667039A5058980527 @default.
• W3155667039 hasAuthorship W3155667039A5060084575 @default.
• W3155667039 hasAuthorship W3155667039A5082149268 @default.
• W3155667039 hasAuthorship W3155667039A5090166228 @default.
• W3155667039 hasConcept C121332964 @default.
• W3155667039 hasConcept C184779094 @default.
• W3155667039 hasConcept C185592680 @default.
• W3155667039 hasConcept C191486275 @default.
• W3155667039 hasConcept C62520636 @default.
• W3155667039 hasConceptScore W3155667039C121332964 @default.
• W3155667039 hasConceptScore W3155667039C184779094 @default.
• W3155667039 hasConceptScore W3155667039C185592680 @default.
• W3155667039 hasConceptScore W3155667039C191486275 @default.
• W3155667039 hasConceptScore W3155667039C62520636 @default.
• W3155667039 hasLocation W31556670391 @default.
• W3155667039 hasOpenAccess W3155667039 @default.
• W3155667039 hasPrimaryLocation W31556670391 @default.
• W3155667039 hasRelatedWork W12684924 @default.
• W3155667039 hasRelatedWork W14175365 @default.
• W3155667039 hasRelatedWork W16804319 @default.
• W3155667039 hasRelatedWork W19828149 @default.
• W3155667039 hasRelatedWork W3587113 @default.
• W3155667039 hasRelatedWork W35880451 @default.
• W3155667039 hasRelatedWork W41115775 @default.
• W3155667039 hasRelatedWork W44112293 @default.
• W3155667039 hasRelatedWork W48413020 @default.
• W3155667039 hasRelatedWork W50255103 @default.
• W3155667039 isParatext "false" @default.
• W3155667039 isRetracted "false" @default.
• W3155667039 magId "3155667039" @default.
• W3155667039 workType "article" @default.