Imperial College London

Professor Tom Pike

Faculty of EngineeringDepartment of Electrical and Electronic Engineering

Professor of Microengineering
 
 
 
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Contact

 

+44 (0)20 7594 6207w.t.pike

 
 
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Location

 

604Electrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

160 results found

Charalambous C, Golombek M, Pike T, Lemmon M, Spiga A, Newman C, Ansan V, Baker M, Banks M, Lorenz R, Stott A, Viudez-Moreiras Det al., 2023, The Aeolian Activity at InSight Over Two Martian Years

<jats:p>Aeolian activity, the movement of sand and dust by the wind, is common on Earth and has been observed on other planets [1]. Under the current climatic conditions on Mars, aeolian activity is the primary process of surface modification driven by winds, dust storms and wind vortices. Landed and orbiting cameras show that widespread aeolian activity occurs despite low measured and modelled winds, challenging Earth-based theories [2, 3]. Dust particles enter into long-term suspension forming global dust storms which drastically alter the Martian atmospheric dynamics and present hazards to robotic and human missions.Several models have been proposed on the long-standing conundrum of sediment transport on Mars, however, none of these have been verified on the planet. The outstanding question of what wind shear velocities mobilize sediments on Mars has remained elusive despite multiple spacecrafts carrying wind sensors and studying aeolian activity on finer spatial and temporal scales than can be achieved in orbit. Quantitative examination of aeolian activity under natural Martian surface conditions is imperative in validating transport models.The InSight lander has provided a unique opportunity for monitoring simultaneous coverage of aeolian activity on Mars by combining, for the first time, imaging with atmospheric, seismic and magnetic measurements. Previous studies spanned over just half of the first Martian year, from the end of northern winter to midsummer, and observed minor aeolian activity limited to sporadic grain motion and dust devil tracks [4, 5].In this study, we extend observations of aeolian activity for two Martian years, allowing us to infer the seasonal evolution at the landing site. We report a series of remarkable daytime vortex-induced events with pressure excursions up to 10 Pa, including an investigation of the burst in daytime vortices and emergence of nighttime vortices in northern autumn. Despite our observations reinforcing the qui

Other

Standley IM, Pike WT, Calcutt S, Hoffman JPet al., 2023, Short Period Seismometer for the Lunar Farside Seismic Suite Mission, IEEE Aerospace Conference, Publisher: IEEE, ISSN: 1095-323X

Conference paper

Lognonne P, Banerdt WB, Clinton J, Garcia RF, Giardini D, Knapmeyer-Endrun B, Panning M, Pike WTet al., 2023, Mars Seismology, ANNUAL REVIEW OF EARTH AND PLANETARY SCIENCES, Vol: 51, Pages: 643-670, ISSN: 0084-6597

Journal article

Li J, Beghein C, McLennan SM, Horleston AC, Charalambous C, Huang Q, Zenhausern G, Bozdag E, Pike WT, Golombek M, Lekic V, Lognonne P, Banerdt WBet al., 2022, Constraints on the martian crust away from the InSight landing site, NATURE COMMUNICATIONS, Vol: 13

Journal article

Ceylan S, Clinton JF, Giardini D, Stahler SC, Horleston A, Kawamura T, Bose M, Charalambous C, Dahmen NL, van Driel M, Duran C, Euchner F, Khan A, Kim D, Plasman M, Scholz J-R, Zenhausen G, Beucler E, Garcia RF, Kedar S, Knapmeyer M, Lognonne P, Panning MP, Perrin C, Pike WT, Stott AE, Banerdt WBet al., 2022, The marsquake catalogue from InSight, sols 0-1011, PHYSICS OF THE EARTH AND PLANETARY INTERIORS, Vol: 333, ISSN: 0031-9201

Journal article

Kim D, Banerdt WB, Ceylan S, Giardini D, Lekic V, Lognonne P, Beghein C, Beucler E, Carrasco S, Charalambous C, Clinton J, Drilleau M, Duran C, Golombek M, Joshi R, Khan A, Knapmeyer-Endrun B, Li J, Maguire R, Pike WT, Samuel H, Schimmel M, Schmerr NC, Stahler SC, Stutzmann E, Wieczorek M, Xu Z, Batov A, Bozdag E, Dahmen N, Davis P, Gudkova T, Horleston A, Huang Q, Kawamura T, King SD, McLennan SM, Nimmo F, Plasman M, Plesa AC, Stepanova IE, Weidner E, Zenhausern G, Daubar IJ, Fernando B, Garcia RF, Posiolova L, Panning MPet al., 2022, Surface waves and crustal structure on Mars, SCIENCE, Vol: 378, Pages: 417-421, ISSN: 0036-8075

Journal article

Posiolova LV, Lognonné P, Banerdt WB, Clinton J, Collins GS, Kawamura T, Ceylan S, Daubar IJ, Fernando B, Froment M, Giardini D, Malin MC, Miljković K, Stähler SC, Xu Z, Banks ME, Beucler É, Cantor BA, Charalambous C, Dahmen N, Davis P, Drilleau M, Dundas CM, Durán C, Euchner F, Garcia RF, Golombek M, Horleston A, Keegan C, Khan A, Kim D, Larmat C, Lorenz R, Margerin L, Menina S, Panning M, Pardo C, Perrin C, Pike WT, Plasman M, Rajšić A, Rolland L, Rougier E, Speth G, Spiga A, Stott A, Susko D, Teanby NA, Valeh A, Werynski A, Wójcicka N, Zenhäusern Get 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.

Journal article

Huang Q, Schmerr NC, King SD, Kima D, Rivoldini A, Plesa A-C, Samuel H, Maguire RR, Karakostas F, Lekic V, Charalambous C, Collinet M, Myhill R, Antonangeli D, Drilleau M, Bystricky M, Bollinger C, Michaut C, Gudkova T, Irving JCE, Horleston A, Fernando B, Leng K, Nissen-Meyer T, Bejina F, Bozdag E, Beghein C, Waszek L, Siersch NC, Scholz J-R, Davis PM, Lognonne P, Pinot B, Widmer-Schnidrig R, Panning MP, Smrekar SE, Spohn T, Pike WT, Giardini D, Banerdt WBet al., 2022, Seismic detection of a deep mantle discontinuity within Mars by InSight, PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, Vol: 119, ISSN: 0027-8424

Journal article

Brinkman N, Schmelzbach C, Sollberger D, ten Pierick J, Edme P, Haag T, Kedar S, Hudson T, Andersson F, van Driel M, Stahler S, Nicollier T, Robertsson J, Giardini D, Spohn T, Krause C, Grott M, Knollenberg J, Hurst K, Rochas L, Vallade J, Blandin S, Lognonne P, Pike WT, Banerdt WBet 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

Journal article

Charalambous C, Pike T, Fernando B, Stott A, Nissen-Meyer T, Lognonné Pet al., 2022, Denoising InSight: Determination of Mars&amp;#8217; lateral crustal variations through surface-wave identification

<jats:p>&amp;lt;p&amp;gt;For over three Earth years, NASA&amp;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;amp;#228;hler et al., 2021; Knapmeyer-Endrun et al., 2021). However, a large number of detected marsquakes are contaminated by SEIS&amp;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.&amp;lt;/p&amp;gt;&amp;lt;p&amp;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;amp;#8220;demodulation&amp;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.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;U

Journal article

Knapmeyer M, Stahler SC, Daubar I, Forget F, Spiga A, Pierron T, van Driel M, Banfield D, Hauber E, Grott M, Mueller N, Perrin C, Jacob A, Lucas A, Knapmeyer-Endrun B, Newman C, Panning MP, Weber RC, Calef FJ, Bose M, Ceylan S, Charalambous C, Clinton J, Dahmen N, Giardini D, Horleston A, Kawamura T, Khan A, Mainsant G, Plasman M, Lemmon M, Lorenz R, Pike WT, Scholz J-R, Lognonne P, Banerdt Bet al., 2021, Seasonal seismic activity on Mars, EARTH AND PLANETARY SCIENCE LETTERS, Vol: 576, ISSN: 0012-821X

Journal article

Zweifel P, Mance D, ten Pierick J, Giardini D, Schmelzbach C, Haag T, Nicollier T, Ceylan S, Staehler S, van Driel M, Sollberger D, Euchner F, Clinton JF, Bierwirth M, Eberhardt M, Lognonne P, Pike WT, Banerdt WBet 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

Journal article

Kim D, Davis P, Lekic V, Maguire R, Compaire N, Schimmel M, Stutzmann E, Irving JCE, Lognonne P, Scholz J-R, Clinton J, Zenhaeusern G, Dahmen N, Deng S, Levander A, Panning MP, Garcia RF, Giardini D, Hurst K, Knapmeyer-Endrun B, Nimmo F, Pike WT, Pou L, Schmerr N, Staehler SC, Tauzin B, Widmer-Schnidrig R, Banerdt WBet al., 2021, Potential Pitfalls in the Analysis and Structural Interpretation of Seismic Data from the Mars <i>InSight</i> Mission, BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, Vol: 111, Pages: 2982-3002, ISSN: 0037-1106

Journal article

Hurst K, Fayon L, Knapmeyer-Endrun B, Schmelzbach C, van Driel M, Ervin J, Kedar S, Pike WT, Calcutt S, Warren T, Charalambous C, Stott A, Bierwirth M, Lognonne P, de Raucourt S, Gabsi T, Nebut T, Robert O, Tillier S, Ceylan S, Bose M, Clinton J, Giardini D, Horleston A, Kawamura T, Khan A, Orhand-Mainsant G, Scholz J-R, Stahler S, Stevanovic J, Banerdt WBet al., 2021, Resonances of the InSight Seismometer on Mars, BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, Vol: 111, Pages: 2951-2963, ISSN: 0037-1106

Journal article

Stott AE, Charalambous C, Warren TJ, Pike WT, Myhill R, Murdoch N, McClean JB, Trebi-Ollennu A, Lim G, Garcia RF, Mimoun D, Kedar S, Hurst KJ, Bierwirth M, Lognonne P, Teanby NA, Horleston A, Banerdt WBet 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

Journal article

Dahmen NL, Zenhausern G, Clinton F, Giardini D, Stabler SC, Ceylan S, Charalambous C, van Driel M, Hurst KJ, Kedar S, Lognonne P, Murdoch N, Myhill R, Panning MP, Pike WT, Schimmel M, Schmelzbach C, Scholz J-R, Stott AE, Stutzmann E, Banerdt WBet 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

Journal article

Sollberger D, Schmelzbach C, Andersson F, Robertsson JOA, Brinkman N, Kedar S, Banerdt WB, Clinton J, van Driel M, Garcia R, Giardini D, Grott M, Haag T, Hudson TL, Lognonné P, Pierick JT, Pike W, Spohn T, Stähler SC, Zweifel Pet 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.

Journal article

Khan A, Ceylan S, van Driel M, Giardini D, Lognonne P, Samuel H, Schmerr NC, Staehler SC, Duran AC, Huang Q, Kim D, Broquet A, Charalambous C, Clinton JF, Davis PM, Drilleau M, Karakostas F, Lekic V, McLennan SM, Maguire RR, Michaut C, Panning MP, Pike WT, Pinot B, Plasman M, Scholz J-R, Widmer-Schnidrig R, Spohn T, Smrekar SE, Banerdt WBet al., 2021, Upper mantle structure of Mars from InSight seismic data, SCIENCE, Vol: 373, Pages: 434-+, ISSN: 0036-8075

Journal article

Stahler SC, Khan A, Banerdt WB, Lognonne P, Giardini D, Ceylan S, Drilleau M, Duran AC, Garcia RF, Huang Q, Kim D, Lekic V, Samuel H, Schimmel M, Schmerr N, Sollberger D, Stutzmann E, Xu Z, Antonangeli D, Charalambous C, Davis PM, Irving JCE, Kawamura T, Knapmeyer M, Maguire R, Marusiak AG, Panning MP, Perrin C, Plesa A-C, Rivoldini A, Schmelzbach C, Zenhausern G, Beucler E, Clinton J, Dahmen N, van Driel M, Gudkova T, Horleston A, Pike WT, Plasman M, Smrekar SEet al., 2021, Seismic detection of the martian core, SCIENCE, Vol: 373, Pages: 443-+, ISSN: 0036-8075

Journal article

Charalambous C, McClean JB, Baker M, Pike WT, Golombek M, Lemmon M, Ansan V, Perrin C, Spiga A, Lorenz RD, Banks ME, Murdoch N, Rodriguez S, Weitz CM, Grant JA, Warner NH, Garvin J, Daubar IJ, Hauber E, Stott AE, Johnson CL, Mittelholz A, Warren T, Navarro S, Sotomayor LM, Maki J, Lucas A, Banfield D, Newman C, Viudez-Moreiras D, Pla-Garcia J, Lognonne P, Banerdt WBet 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

Journal article

Brinkman N, Stahler SC, Giardini D, Schmelzbach C, Khan A, Jacob A, Fuji N, Perrin C, Lognonne P, Beucler E, Bose M, Ceylan S, Charalambous C, Clinton JF, van Driel M, Euchner F, Horleston A, Kawamura T, Knapmeyer-Endrun B, Mainsant G, Panning MP, Pike WT, Scholz J-R, Robertsson JOA, Banerdt WBet al., 2021, First Focal Mechanisms of Marsquakes, JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, Vol: 126, ISSN: 2169-9097

Journal article

Compaire N, Margerin L, Garcia RF, Pinot B, Calvet M, Orhand-Mainsant G, Kim D, Lekic V, Tauzin B, Schimmel M, Stutzmann E, Knapmeyer-Endrun B, Lognonne P, Pike WT, Schmerr N, Gizon L, Banerdt WBet 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

Journal article

Charalambous C, Stott AE, Pike WT, McClean JB, Warren T, Spiga A, Banfield D, Garcia RF, Clinton J, Stahler S, Navarro S, Lognonne P, Scholz J-R, Kawamura T, van Driel M, Bose M, Ceylan S, Khan A, Horleston A, Orhand-Mainsant G, Sotomayor LM, Murdoch N, Giardini D, Banerdt WBet 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

Journal article

van Driel M, Ceylan S, Clinton JF, Giardini D, Horleston A, Margerin L, Stahler SC, Bose M, Charalambous C, Kawamura T, Khan A, Orhand-Mainsant G, Scholz J-R, Euchner F, Knapmeyer M, Schmerr N, Pike WT, Lognonne P, Banerdt WBet al., 2021, High-Frequency Seismic Events on Mars Observed by InSight, JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, Vol: 126, ISSN: 2169-9097

Journal article

Nunn C, Pike WTT, Standley IMM, Calcutt SBB, Kedar S, Panning MPPet al., 2021, Standing on Apollo's Shoulders: A Microseismometer for the Moon, PLANETARY SCIENCE JOURNAL, Vol: 2

Journal article

Dahmen NL, Clinton JF, Ceylan S, van Driel M, Giardini D, Khan A, Stahler SC, Bose M, Charalambous C, Horleston A, Kawamura T, Orhand-Mainsant G, Scholz J-R, Euchner F, Pike WT, Weber RC, Lognonne P, Banerdt WBet 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

Journal article

Ceylan S, Clinton JF, Giardini D, Boese M, Charalambous C, van Driel M, Horleston A, Kawamura T, Khan A, Orhand-Mainsant G, Scholz J-R, Staehler SC, Euchner F, Banerdt WB, Lognonne P, Banfield D, Beucler E, Garcia RF, Kedar S, Panning MP, Pike WT, Smrekar SE, Spiga A, Dahmen NL, Hurst K, Stott AE, Lorenz RD, Schimmel M, Stutzmann E, ten Pierick J, Conejero V, Pardo C, Perrin Cet 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

Journal article

Clinton JF, Ceylan S, van Driel M, Giardini D, Staehler SC, Boese M, Charalambous C, Dahmen NL, Horleston A, Kawamura T, Khan A, Orhand-Mainsant G, Scholz J-R, Euchner F, Banerdt WB, Lognonne P, Banfield D, Beucler E, Garcia RF, Kedar S, Panning MP, Perrin C, Pike WT, Smrekar SE, Spiga A, Stott AEet al., 2021, The Marsquake catalogue from InSight, sols 0-478, PHYSICS OF THE EARTH AND PLANETARY INTERIORS, Vol: 310, ISSN: 0031-9201

Journal article

Scholz J-R, Widmer-Schnidrig R, Davis P, Lognonne P, Pinot B, Garcia RF, Hurst K, Pou L, Nimmo F, Barkaoui S, De Raucourt S, Knapmeyer-Endrun B, Knapmeyer M, Orhand-Mainsant G, Compaire N, Cuvier A, Beucler E, Bonnin M, Joshi R, Sainton G, Stutzmann E, Schimmel M, Horleston A, Bose M, Ceylan S, Clinton J, Van Driel M, Kawamura T, Khan A, Stahler SC, Giardini D, Charalambous C, Stott AE, Pike WT, Christensen UR, Banerdt WBet al., 2020, Detection, Analysis, and Removal of Glitches From InSight's Seismic Data From Mars, EARTH AND SPACE SCIENCE, Vol: 7

Journal article

McClean JB, Merrison JP, Iversen JJ, Azimian M, Wiegmann A, Pike WT, Hecht MHet al., 2020, Filtration of simulated Martian atmosphere for in-situ oxygen production, PLANETARY AND SPACE SCIENCE, Vol: 191, ISSN: 0032-0633

Journal article

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