Publications
154 results found
Li J, Beghein C, McLennan SM, et al., 2022, Constraints on the martian crust away from the InSight landing site, NATURE COMMUNICATIONS, Vol: 13
Ceylan S, Clinton JF, Giardini D, et al., 2022, The marsquake catalogue from InSight, sols 0-1011, PHYSICS OF THE EARTH AND PLANETARY INTERIORS, Vol: 333, ISSN: 0031-9201
- Author Web Link
- Cite
- Citations: 3
Posiolova LV, Lognonné P, Banerdt WB, et al., 2022, Largest recent impact craters on Mars: Orbital imaging and surface seismic co-investigation., Science, Vol: 378, Pages: 412-417, ISSN: 0036-8075
Two >130-meter-diameter impact craters formed on Mars during the later half of 2021. These are the two largest fresh impact craters discovered by the Mars Reconnaissance Orbiter since operations started 16 years ago. The impacts created two of the largest seismic events (magnitudes greater than 4) recorded by InSight during its 3-year mission. The combination of orbital imagery and seismic ground motion enables the investigation of subsurface and atmospheric energy partitioning of the impact process on a planet with a thin atmosphere and the first direct test of martian deep-interior seismic models with known event distances. The impact at 35°N excavated blocks of water ice, which is the lowest latitude at which ice has been directly observed on Mars.
Kim D, Banerdt WB, Ceylan S, et al., 2022, Surface waves and crustal structure on Mars, SCIENCE, Vol: 378, Pages: 417-421, ISSN: 0036-8075
- Author Web Link
- Cite
- Citations: 5
Huang Q, Schmerr NC, King SD, et al., 2022, Seismic detection of a deep mantle discontinuity within Mars by InSight., Proc Natl Acad Sci U S A, Vol: 119
Constraining the thermal and compositional state of the mantle is crucial for deciphering the formation and evolution of Mars. Mineral physics predicts that Mars' deep mantle is demarcated by a seismic discontinuity arising from the pressure-induced phase transformation of the mineral olivine to its higher-pressure polymorphs, making the depth of this boundary sensitive to both mantle temperature and composition. Here, we report on the seismic detection of a midmantle discontinuity using the data collected by NASA's InSight Mission to Mars that matches the expected depth and sharpness of the postolivine transition. In five teleseismic events, we observed triplicated P and S waves and constrained the depth of this discontinuity to be 1,006 [Formula: see text] 40 km by modeling the triplicated waveforms. From this depth range, we infer a mantle potential temperature of 1,605 [Formula: see text] 100 K, a result consistent with a crust that is 10 to 15 times more enriched in heat-producing elements than the underlying mantle. Our waveform fits to the data indicate a broad gradient across the boundary, implying that the Martian mantle is more enriched in iron compared to Earth. Through modeling of thermochemical evolution of Mars, we observe that only two out of the five proposed composition models are compatible with the observed boundary depth. Our geodynamic simulations suggest that the Martian mantle was relatively cold 4.5 Gyr ago (1,720 to 1,860 K) and are consistent with a present-day surface heat flow of 21 to 24 mW/m2.
Brinkman N, Schmelzbach C, Sollberger D, et al., 2022, In Situ Regolith Seismic Velocity Measurement at the InSight Landing Site on Mars, JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, Vol: 127, ISSN: 2169-9097
- Author Web Link
- Cite
- Citations: 1
Charalambous C, Pike T, Fernando B, et al., 2022, Denoising InSight: Determination of Mars’ lateral crustal variations through surface-wave identification
<jats:p>&lt;p&gt;For over three Earth years, NASA&amp;#8217;s InSight mission has returned data from the Seismic Experiment for Interior Structure (SEIS) on Mars with over 1300 recorded marsquakes (Horleston et al., this issue), leading to numerous breakthroughs in determining the planet's structure (Khan et al., 2021; St&amp;#228;hler et al., 2021; Knapmeyer-Endrun et al., 2021). However, a large number of detected marsquakes are contaminated by SEIS&amp;#8217;s complex interaction with the Martian atmosphere which injects noise and couples into the seismic signal. Identification of surface waves, polarisation analysis and clear body-wave arrivals is therefore often inhibited by this strong atmospheric noise. Despite numerous identifications, only 12 events have so far been fully located. Detection and analysis of the seismic component thus requires separation from such aseismic signal sources.&lt;/p&gt;&lt;p&gt;Here we present a novel denoising model which exploits the strong correlation between the ground motion and the atmospheric conditions recorded at InSight. The approach exploits linearities in the noise injected by the atmosphere by using weather data measured by the lander, or in the absence of such data due to power constraints, the excitation of wind-sensitive lander modes that have been proven an effective atmospheric proxy in estimating this injection on Mars (Charalambous et al., 2021; Clinton et al., 2021; Dahmen et al., 2021). The output results in &amp;#8220;demodulation&amp;#8221;, i.e., the cancellation of any environmental noise and the effective isolation of the seismic signal power in time-frequency space. Our denoising approach is thus able to remove and decouple the environmental noise from the seismic signal to reveal features in the seismic event waveform that were previously hidden in the noise.&lt;/p&gt;&lt;p&gt;U
Stott AE, Charalambous C, Warren TJ, et al., 2021, The Site Tilt and Lander Transfer Function from the Short-Period Seismometer of InSight on Mars, BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, Vol: 111, Pages: 2889-2908, ISSN: 0037-1106
- Author Web Link
- Cite
- Citations: 4
Kim D, Davis P, Lekic V, et al., 2021, Potential Pitfalls in the Analysis and Structural Interpretation of Seismic Data from the Mars InSight Mission, BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, Vol: 111, Pages: 2982-3002, ISSN: 0037-1106
- Author Web Link
- Cite
- Citations: 19
Zweifel P, Mance D, ten Pierick J, et al., 2021, Seismic High-Resolution Acquisition Electronics for the NASA InSight Mission on Mars, BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, Vol: 111, Pages: 2909-2923, ISSN: 0037-1106
- Author Web Link
- Cite
- Citations: 5
Dahmen NL, Zenhausern G, Clinton F, et al., 2021, Resonances and Lander Modes Observed by InSight on Mars (1-9 Hz), BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, Vol: 111, Pages: 2924-2950, ISSN: 0037-1106
- Author Web Link
- Cite
- Citations: 16
Hurst K, Fayon L, Knapmeyer-Endrun B, et al., 2021, Resonances of the InSight Seismometer on Mars, BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, Vol: 111, Pages: 2951-2963, ISSN: 0037-1106
- Author Web Link
- Cite
- Citations: 7
Knapmeyer M, Stahler SC, Daubar I, et al., 2021, Seasonal seismic activity on Mars, EARTH AND PLANETARY SCIENCE LETTERS, Vol: 576, ISSN: 0012-821X
- Author Web Link
- Cite
- Citations: 3
Sollberger D, Schmelzbach C, Andersson F, et al., 2021, A Reconstruction Algorithm for Temporally Aliased Seismic Signals Recorded by the InSight Mars Lander., Earth Space Sci, Vol: 8, ISSN: 2333-5084
In December 2018, the NASA InSight lander successfully placed a seismometer on the surface of Mars. Alongside, a hammering device was deployed at the landing site that penetrated into the ground to attempt the first measurements of the planetary heat flow of Mars. The hammering of the heat probe generated repeated seismic signals that were registered by the seismometer and can potentially be used to image the shallow subsurface just below the lander. However, the broad frequency content of the seismic signals generated by the hammering extends beyond the Nyquist frequency governed by the seismometer's sampling rate of 100 samples per second. Here, we propose an algorithm to reconstruct the seismic signals beyond the classical sampling limits. We exploit the structure in the data due to thousands of repeated, only gradually varying hammering signals as the heat probe slowly penetrates into the ground. In addition, we make use of the fact that repeated hammering signals are sub-sampled differently due to the unsynchronized timing between the hammer strikes and the seismometer recordings. This allows us to reconstruct signals beyond the classical Nyquist frequency limit by enforcing a sparsity constraint on the signal in a modified Radon transform domain. In addition, the proposed method reduces uncorrelated noise in the recorded data. Using both synthetic data and actual data recorded on Mars, we show how the proposed algorithm can be used to reconstruct the high-frequency hammering signal at very high resolution.
Stahler SC, Khan A, Banerdt WB, et al., 2021, Seismic detection of the martian core, SCIENCE, Vol: 373, Pages: 443-+, ISSN: 0036-8075
- Author Web Link
- Cite
- Citations: 87
Khan A, Ceylan S, van Driel M, et al., 2021, Upper mantle structure of Mars from InSight seismic data, SCIENCE, Vol: 373, Pages: 434-+, ISSN: 0036-8075
- Author Web Link
- Cite
- Citations: 61
Charalambous C, McClean JB, Baker M, et al., 2021, Vortex-Dominated Aeolian Activity at InSight's Landing Site, Part 1: Multi-Instrument Observations, Analysis, and Implications, JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, Vol: 126, ISSN: 2169-9097
- Author Web Link
- Cite
- Citations: 11
Compaire N, Margerin L, Garcia RF, et al., 2021, Autocorrelation of the Ground Vibrations Recorded by the SEIS-InSight Seismometer on Mars, JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, Vol: 126, ISSN: 2169-9097
- Author Web Link
- Cite
- Citations: 17
Brinkman N, Stahler SC, Giardini D, et al., 2021, First Focal Mechanisms of Marsquakes, JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, Vol: 126, ISSN: 2169-9097
- Author Web Link
- Cite
- Citations: 21
Charalambous C, Stott AE, Pike WT, et al., 2021, A Comodulation Analysis of Atmospheric Energy Injection Into the Ground Motion at InSight, Mars, JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, Vol: 126, ISSN: 2169-9097
- Author Web Link
- Cite
- Citations: 14
van Driel M, Ceylan S, Clinton JF, et al., 2021, High-Frequency Seismic Events on Mars Observed by InSight, JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, Vol: 126, ISSN: 2169-9097
- Author Web Link
- Cite
- Citations: 28
Nunn C, Pike WTT, Standley IMM, et al., 2021, Standing on Apollo's Shoulders: A Microseismometer for the Moon, PLANETARY SCIENCE JOURNAL, Vol: 2
- Author Web Link
- Cite
- Citations: 4
Dahmen NL, Clinton JF, Ceylan S, et al., 2021, Super High Frequency Events: A New Class of Events Recorded by the InSight Seismometers on Mars, JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, Vol: 126, ISSN: 2169-9097
- Author Web Link
- Cite
- Citations: 16
Clinton JF, Ceylan S, van Driel M, et al., 2021, The Marsquake catalogue from InSight, sols 0-478, PHYSICS OF THE EARTH AND PLANETARY INTERIORS, Vol: 310, ISSN: 0031-9201
- Author Web Link
- Cite
- Citations: 56
Ceylan S, Clinton JF, Giardini D, et al., 2021, Companion guide to the marsquake catalog from InSight, Sols 0-478: Data content and non-seismic events, PHYSICS OF THE EARTH AND PLANETARY INTERIORS, Vol: 310, ISSN: 0031-9201
- Author Web Link
- Cite
- Citations: 39
Scholz J-R, Widmer-Schnidrig R, Davis P, et al., 2020, Detection, Analysis, and Removal of Glitches From InSight's Seismic Data From Mars, EARTH AND SPACE SCIENCE, Vol: 7
- Author Web Link
- Cite
- Citations: 45
McClean JB, Merrison JP, Iversen JJ, et al., 2020, Filtration of simulated Martian atmosphere for in-situ oxygen production, PLANETARY AND SPACE SCIENCE, Vol: 191, ISSN: 0032-0633
- Author Web Link
- Cite
- Citations: 2
Golombek M, Kass D, Williams N, et al., 2020, Assessment of InSight Landing Site Predictions, JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, Vol: 125, ISSN: 2169-9097
- Author Web Link
- Cite
- Citations: 25
Weitz CM, Grant JA, Golombek MP, et al., 2020, Comparison of InSight Homestead Hollow to Hollows at the Spirit Landing Site, JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, Vol: 125, ISSN: 2169-9097
- Author Web Link
- Cite
- Citations: 8
Grant JA, Warner NH, Weitz CM, et al., 2020, Degradation of Homestead Hollow at the InSight Landing Site Based on the Distribution and Properties of Local Deposits, JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, Vol: 125, ISSN: 2169-9097
- Author Web Link
- Cite
- Citations: 15
This data is extracted from the Web of Science and reproduced under a licence from Thomson Reuters. You may not copy or re-distribute this data in whole or in part without the written consent of the Science business of Thomson Reuters.