TY - JOUR AU - Nagy, Balázs AU - Kovács, József AU - Ignéczi, Ádám AU - Beleznai, Szabolcs AU - Mari, László AU - Kereszturi, Ákos AU - Szalai, Zoltán TI - The thermal behavior of ice-bearing ground : the highest cold, dry desert on Earth as an analog for conditions on Mars, at Ojos del Salado, Puna de Atacama-Altiplano Region JF - ASTROBIOLOGY J2 - ASTROBIOLOGY VL - 20 PY - 2020 IS - 6 SP - 701 EP - 722 PG - 22 SN - 1531-1074 DO - 10.1089/ast.2018.2021 UR - https://m2.mtmt.hu/api/publication/31344017 ID - 31344017 LA - English DB - MTMT ER - TY - JOUR AU - Pál, Bernadett AU - Kereszturi, Ákos TI - Annual and daily ideal periods for deliquescence at the landing site of InSight based on GCM model calculations JF - ICARUS J2 - ICARUS VL - 340 PY - 2020 SN - 0019-1035 DO - 10.1016/j.icarus.2020.113639 UR - https://m2.mtmt.hu/api/publication/31159376 ID - 31159376 LA - English DB - MTMT ER - TY - JOUR AU - Skultéti, Ágnes AU - Kereszturi, Ákos AU - Szabó, Máté Zoltán AU - Kereszty, Zs AU - Cipriani, F. TI - Mid-infrared spectroscopic investigation of meteorites and perspectives for thermal infrared observations at the binary asteroid Didymos JF - PLANETARY AND SPACE SCIENCE J2 - PLANET SPACE SCI VL - 184 PY - 2020 SN - 0032-0633 DO - 10.1016/j.pss.2020.104855 UR - https://m2.mtmt.hu/api/publication/31345290 ID - 31345290 LA - English DB - MTMT ER - TY - JOUR AU - Skultéti, Ágnes AU - Kereszturi, Ákos AU - Kereszty, Zs AU - Pál, Bernadett AU - Szabó, Máté Zoltán AU - Cipriani, F TI - Role of spectral resolution for infrared asteroid compositional analysis using meteorite spectra JF - MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY J2 - MON NOT R ASTRON SOC VL - 496 PY - 2020 IS - 1 SP - 689 EP - 694 PG - 6 SN - 0035-8711 DO - 10.1093/mnras/staa1475 UR - https://m2.mtmt.hu/api/publication/31403943 ID - 31403943 LA - English DB - MTMT ER - TY - JOUR AU - Gyollai, Ildikó AU - Kereszturi, Ákos AU - Chatzitheodoridis, E TI - Analysis of shock metamorphic processes in the Zagami meteorite JF - CENTRAL EUROPEAN GEOLOGY J2 - CENT EUR GEOL VL - 62 PY - 2019 IS - 1 SP - 56 EP - 82 PG - 27 SN - 1788-2281 DO - 10.1556/24.61.2018.12 UR - https://m2.mtmt.hu/api/publication/30803007 ID - 30803007 LA - English DB - MTMT ER - TY - CONF AU - Gyollai, Ildikó AU - Kereszturi, Ákos AU - Szabó, Máté Zoltán AU - Kereszty, Zs. ED - Louise, Prockter TI - New inputs on CAI formation based on a new CV3 meteorite Northwest Africa 10261. T2 - 50th Lunar and Planetary Science Conference - LPSC PB - Lunar and Planetary Institute C1 - The Woodlands (TX) PY - 2019 PG - 2 UR - https://m2.mtmt.hu/api/publication/30421140 ID - 30421140 LA - English DB - MTMT ER - TY - CONF AU - Kapui, Zsuzsanna AU - Kereszturi, Ákos AU - Józsa, Sándor AU - Király, Csilla AU - Szalai, Zoltán AU - Újvári, Gábor ED - Louise, Prockter TI - Surface textural analysis of Mars relevant fluvial and aeolian basaltic grains by scanning electron microscopy T2 - 50th Lunar and Planetary Science Conference - LPSC PB - Lunar and Planetary Institute C1 - The Woodlands (TX) PY - 2019 PG - 2 UR - https://m2.mtmt.hu/api/publication/30421154 ID - 30421154 LA - English DB - MTMT ER - TY - JOUR AU - Orgel, Csilla AU - Hauber, Ernst AU - Gasselt, Stephan AU - Reiss, Dennis AU - Johnsson, Andreas AU - Ramsdale, Jason D. AU - Smith, Isaac AU - Swirad, Zuzanna M. AU - Séjourné, Antoine AU - Wilson, Jack T. AU - Balme, Matthew R. AU - Conway, Susan J. AU - Costard, Francois AU - Eke, Vince R. AU - Gallagher, Colman AU - Kereszturi, Ákos AU - Łosiak, Anna AU - Massey, Richard J. AU - Platz, Thomas AU - Skinner, James A. AU - Teodoro, Luis F. A. TI - Grid Mapping the Northern Plains of Mars: A New Overview of Recent Water‐ and Ice‐Related Landforms in Acidalia Planitia JF - JOURNAL OF GEOPHYSICAL RESEARCH: PLANETS J2 - J GEOPHYS RES PLANET VL - 124 PY - 2019 IS - 2 SP - 454 EP - 482 PG - 29 SN - 2169-9097 DO - 10.1029/2018JE005664 UR - https://m2.mtmt.hu/api/publication/30618316 ID - 30618316 LA - English DB - MTMT ER - TY - JOUR AU - Pál, Bernadett AU - Kereszturi, Ákos AU - Forget, Francois AU - Smith, Michael D. TI - Global seasonal variations of the near-surface relative humidity levels on present-day Mars JF - ICARUS J2 - ICARUS VL - 333 PY - 2019 SP - 481 EP - 495 PG - 15 SN - 0019-1035 DO - 10.1016/j.icarus.2019.07.007 UR - https://m2.mtmt.hu/api/publication/30810334 ID - 30810334 N1 - Funding Agency and Grant Number: NKFIH [COOP - NN - 116927]; EXODRILTECH project [4000119270]; National Research, Development and Innovation Office (NKFIH, Hungary) [GINOP-2.3.2-15-2016-00003]; Origins and evolution of life on Earth and in the Universe COST actions [TD1308, 39045, 39078] Funding text: This work was funded by the COOP - NN - 116927 project of NKFIH, EXODRILTECH (4000119270) project, the GINOP-2.3.2-15-2016-00003 grant of the National Research, Development and Innovation Office (NKFIH, Hungary) and the TD1308 Origins and evolution of life on Earth and in the Universe COST actions numbers 39045 and 39078. Special thanks to Vladimir V. Zakharov for his invaluable help with the NetCDF file handling. The NetCDF files were visualized with the NASA GISS Panoply viewer developed by Dr. Robert B. Schmunk. The thermal inertia map (Fig. 6.) was created by Vilmos Steinmann. Special thank you for Gerard Willinger and Laszlo Szabados for the improvement of the language of the manuscript. We also thank the referees for their valuable input which have greatly improved this manuscript. AB - We investigate the global seasonal variations of near-surface relative humidity and relevant attributes, like temperature and water vapor volume mixing ratio on Mars using calculations from modelled and measurement data. We focus on 2 AM local time snapshots to eliminate daily effects related to differences in insolation, and to be able to compare calculations based on modelling data from the Laboratoire de Meteorologie Dynamique Mars General Circulation Model with the observations of Mars Global Surveyor Thermal Emission Spectrometer. We study the seasonal effects by examining four specific dates in the Martian year, the northern spring equinox, summer solstice, autumn equinox, and winter solstice. We identify three specific zones, where the near-surface relative humidity levels are systematically higher than in their vicinity regardless of season. We find that these areas coincide with low thermal inertia features, which control surface temperatures on the planet, and are most likely covered with unconsolidated fine dust with grain sizes smaller than similar to 40 mu m. By comparing the data of relative humidity, temperature and water vapor volume mixing ratio at three different heights (near-surface, similar to 4 m and similar to 23 m above the surface), we demonstrate that the thermal inertia could play an important role in determining near-surface humidity levels. We also notice that during the night the water vapor levels drop at similar to 4 m above the surface. This, together with the temperature and thermal inertia values, shows that water vapor likely condenses in the near-surface atmosphere and on the ground during the night at the three aforementioned regions. This condensation may be in the form of brines, wettening of the fine grains by adsorption or deliquescence. This study specifies areas of interest on the surface of present day Mars for the proposed condensation, which may be examined by in-situ measurements in the future. LA - English DB - MTMT ER - TY - JOUR AU - Séjourné, Antoine AU - Costard, Francois AU - Swirad, Zuzanna M. AU - Łosiak, Anna AU - Bouley, Sylvain AU - Smith, Isaac AU - Balme, Matthew R. AU - Orgel, Csilla AU - Ramsdale, Jason D. AU - Hauber, Ernst AU - Conway, Susan J. AU - Gasselt, Stephan AU - Reiss, Dennis AU - Johnsson, Andreas AU - Gallagher, Colman AU - Skinner, James A. AU - Kereszturi, Ákos AU - Platz, Thomas TI - Grid Mapping the Northern Plains of Mars: Using Morphotype and Distribution of Ice‐Related Landforms to Understand Multiple Ice‐Rich Deposits in Utopia Planitia JF - JOURNAL OF GEOPHYSICAL RESEARCH: PLANETS J2 - J GEOPHYS RES PLANET VL - 124 PY - 2019 IS - 2 SP - 483 EP - 503 PG - 21 SN - 2169-9097 DO - 10.1029/2018JE005665 UR - https://m2.mtmt.hu/api/publication/30618309 ID - 30618309 LA - English DB - MTMT ER - TY - JOUR AU - Bowles, N.E. AU - Snodgrass, C. AU - Gibbings, A. AU - Sanchez, J.P. AU - Arnold, J.A. AU - Eccleston, P. AU - Andert, T. AU - Probst, A. AU - Naletto, G. AU - Vandaele, A.C. AU - de Leon, J. AU - Nathues, A. AU - Thomas, I.R. AU - Thomas, N. AU - Jorda, L. AU - Da Deppo, V. AU - Haack, H. AU - Green, S.F. AU - Carry, B. AU - Donaldson Hanna, K.L. AU - Leif Jorgensen, J. AU - Kereszturi, Ákos AU - DeMeo, F.E. AU - Patel, M.R. AU - Davies, J.K. AU - Clarke, F. AU - Kinch, K. AU - Guilbert-Lepoutre, A. AU - Agarwal, J. AU - Rivkin, A.S. AU - Pravec, P. AU - Fornasier, S. AU - Granvik, M. AU - Jones, R.H. AU - Murdoch, N. AU - Joy, K.H. AU - Pascale, E. AU - Tecza, M. AU - Barnes, J.M. AU - Licandro, J. AU - Greenhagen, B.T. AU - Calcutt, S.B. AU - Marriner, C.M. AU - Warren, T. AU - Tosh, I. AU - Bowles, N. E. AU - Snodgrass, C. AU - Gibbings, A. AU - Sanchez, J.P. AU - Arnold, null AU - J.A., null AU - Eccleston, P. AU - Andert, T. AU - Probst, A. AU - Naletto, G. AU - Vandaele, A.C. AU - de Leon, J. AU - Nathues, A. AU - Thomas, I.R. AU - Thomas, N. AU - Jorda, J. AU - Da, Deppo V. AU - Haack, H. AU - Green, J.F. AU - Carry, B. AU - Donaldson, Hanna K.L. AU - Leif, Jorgensen J. Kereszturi A. AU - DeMeo, E.F. AU - Patel, M.R. AU - Davies, J.K. AU - Clarke, F. Kinch K. AU - Guilbert-Lepoutre, A. AU - Agarwal, J. AU - Rivkin, A.S. AU - Pravec, P. AU - Fornasier, S. AU - Granvik, M. AU - Jones, R.H. AU - Murdoch, N. AU - Joy, K.H. AU - Pascale, E. AU - Tecza, M. AU - Barnes, J.M. AU - Licandro, J. AU - Greenhagen, B:T. AU - Calcutt, S.B. AU - Marriner, C.M. AU - Warren, T. AU - Tosh, I. TI - CASTAway: An asteroid main belt tour and survey JF - ADVANCES IN SPACE RESEARCH J2 - ADV SPACE RES VL - 62 PY - 2018 IS - 8 SP - 1998 EP - 2025 PG - 28 SN - 0273-1177 DO - 10.1016/j.asr.2017.10.021 UR - https://m2.mtmt.hu/api/publication/30359085 ID - 30359085 LA - English DB - MTMT ER - TY - CHAP AU - Dunér, D AU - Capova, K A AU - Gargaud, M AU - Geppert, W AU - Kereszturi, Ákos AU - Persson, E ED - Capova, Klara Anna ED - Persson, Erik ED - Milligan, Tony ED - Dunér, David TI - Astrobiology and Society in Europe T2 - Astrobiology and Society in Europe Today PB - Springer Netherlands CY - Cham (Németország) SN - 9783319962658 T3 - SpringerBriefs in Astronomy PY - 2018 SP - 7 EP - 10 PG - 4 DO - 10.1007/978-3-319-96265-8_2 UR - https://m2.mtmt.hu/api/publication/3428657 ID - 3428657 AB - There is only, as we know it, one planet with life—our own Earth. However, current research in astrobiology searches for a second sample of a living world. Astrobiology, which concerns the origin, evolution, and future of life here on Earth and beyond, has become a rapidly expanding research field during the last two decades. European researchers are playing a leading role. Thousands of planets in other solar systems have been discovered. Knowledge about life’s evolutionary origin, and its requirements and environmental conditions have expanded considerably. It is not unlikely that one day—some say that this could happen within the next few decades—we will discover evidence of the existence of another living planet. Living or fossilized microbes could be found within our Solar System, or we could find signs of biological processes on planets in other solar systems. But even if this never happens, astrobiological research will still give us a new understanding of how life emerged on our planet, how it evolved, and what environmental conditions it needs in order to survive. In all, current and future research in astrobiology will change the view of how humans look at themselves, what it means to be a human, to be alive, to survive, where we come from, and where we are heading (Fig. 2.1). Astrobiology has clear existential implications, but beyond these, it also has concrete cultural, ethical, societal, educational, political, economic, and legal consequences. How will the general public react if we discover life on another planet? What pedagogic role can astrobiology play in elementary and higher education? To what extent should we utilise space for commercial and industrial purposes? How should this be politically managed and how should it be legally regulated? This White Paper on the societal implications of astrobiology research in Europe, which is a joint interdisciplinary effort of Working Group 5 within the COST Action TD1308 “Origins and Evolution of Life on Earth and in the Universe”, aims to gather together these challenges and implications, and in so doing lay the ground for a European Astrobiology Institute. LA - English DB - MTMT ER - TY - JOUR AU - Kapui, Zsuzsanna AU - Kereszturi, Ákos AU - Kiss, Klaudia AU - Szalai, Zoltán AU - Újvári, Gábor AU - Hickman-Lewis, K AU - Foucher, F AU - Westall, F TI - Fluvial or aeolian grains? Separation of transport agents on Mars using Earth analogue observations JF - PLANETARY AND SPACE SCIENCE J2 - PLANET SPACE SCI VL - 163 PY - 2018 SP - 56 EP - 76 PG - 21 SN - 0032-0633 DO - 10.1016/j.pss.2018.06.007 UR - https://m2.mtmt.hu/api/publication/3391390 ID - 3391390 N1 - Institute for Geological and Geochemical Research, MTA Research Center for Astronomy and Earth Sciences, Budaörsi str. 45, Budapest, 1112, Hungary Konkoly Observatory, MTA Research Center for Astronomy and Earth Sciences, 15-17, Road Konkoly Thege Miklós, Budapest, 1121, Hungary Geographical Institute, MTA Research Center for Astronomy and Earth Sciences, 45., Road Budaörsi, Budapest, 1112, Hungary CNRS Centre de Biophysique Moléculaire, Rue Charles Sadron, Cedex 2, Orléans, 45071, France Dipartmento di Scienze biologiche, geologiche e ambientale, Università di Bologna, Italy Cited By :3 Export Date: 25 November 2019 CODEN: PLSSA Correspondence Address: Kapui, Z.; Institute for Geological and Geochemical Research, MTA Research Center for Astronomy and Earth Sciences, Budaörsi str. 45, Hungary; email: kapui.zsuzsanna@csfk.mta.hu AB - The particle size, shape, surface texture and composition of aeolian and fluvial sedimentary samples were analyzed and compared using optical microscope-based automatized image analysis, in order to suggest indicators that could discriminate these two modes of transport on Mars. The principal goal is to assess if such indicators - established on Earth - could be used on Mars thereby aiding interpretations on the origin of sediments analysed by the ExoMars 2020 rover during its mission. Wind and water transported sand from, respectively, the Sahara Desert and the Maros river bar in Hungary were investigated and treated as mainly aeolian and fluvial end-members. In addition, two Mars-analogue aeolian and fluvial basaltic sediments from Iceland were analysed similarly. Our analyses demonstrated that useful parameters for the distinction of aeolian and fluvial transport included the degree of sorting, the grain diameter/perimeter ratio, the circularity (reflecting the sphericity of the grains) and convexity (showing roughness of the grains) of particles. Mature aeolian sands are always well-sorted with high diameter/perimeter ratios since they are dominated by rounded grains. Differences were observed in both surface textures and the range of mineral compositions, wherein the aeolian samples reflect a more mature state. Separation of the two Icelandic samples with different origins was less straightforward due to both shorter transport distances and the fact that the fluvial sample was made of scoria, although the intermixing of grains with a probable aeolian origin could be also determined. The characteristics of grain size and shape parameters are potential indicators allowing the separation of the two transport modes, and their determination is shown to be feasible based on high resolution Close-UP Imager (CLUPI) observations. Nonetheless, knowledge of the geological context - for instance sedimentary facies, layering, sorting of the sediments and grain shape - is a requirement for proper interpretations. These sedimentary features could be party determined by MaMISS, CLUPI and PanCam observations. Differences between aeolian and fluvial grains are expected to be more pronounced on Mars than on Earth due to the episodic and likely short-term subaqueous transport, as opposed to the long-term activity of wind. However, future interpretations of the ExoMars 2020 rover images of martian sedimentary grains will be hampered by the limited knowledge of fluvial/aeolian transport on Mars. Based on our results, future research should focus on determining the dominant transport mode of any sediment and the degree of grain mixing, which strongly based on the transport mode. LA - English DB - MTMT ER - TY - JOUR AU - Kereszturi, Ákos AU - Kapui, Zsuzsanna AU - Ori, G.G. AU - Taj-Eddine, K. AU - Újvári, Gábor TI - Mars-Relevant Field Experiences in Morocco: The Importance of Spatial Scales and Subsurface Exploration JF - ASTROBIOLOGY J2 - ASTROBIOLOGY VL - 18 PY - 2018 IS - 10 SP - 1329 EP - 1350 PG - 22 SN - 1531-1074 DO - 10.1089/ast.2017.1676 UR - https://m2.mtmt.hu/api/publication/30309717 ID - 30309717 N1 - \n Konkoly Thege Miklos Astronomical Institute, Research Centre for Astronomy and Earth Sciences, Konkoly Thege Miklos 15-17, Budapest, H-1121, Hungary \n Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences, Budapest, Hungary \n Ibn Battuta Centre, Cadi Ayyad University Marrakech, Morocco \n International Research School on Planetary Sciences, Pescara, Italy \n Export Date: 6 November 2018 \n Correspondence Address: Kereszturi, A.; Konkoly Thege Miklos Astronomical Institute, Research Centre for Astronomy and Earth Sciences, Konkoly Thege Miklos 15-17, Hungary; email: kereszturi.akos@csfk.mta.hu LA - English DB - MTMT ER - TY - JOUR AU - Fulvio, Daniele AU - Góbi, Sándor AU - Jäger, Cornelia AU - Kereszturi, Ákos AU - Henning, Thomas TI - Laboratory Experiments on the Low-temperature Formation of Carbonaceous Grains in the ISM JF - ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES J2 - ASTROPHYS J SUPPL S VL - 233 PY - 2017 IS - 1 PG - 11 SN - 0067-0049 DO - 10.3847/1538-4365/aa9224 UR - https://m2.mtmt.hu/api/publication/3303390 ID - 3303390 LA - English DB - MTMT ER - TY - JOUR AU - Góbi, Sándor AU - Kereszturi, Ákos TI - Role of serpentinisation in the thermal and connected mineral evolution of planetesimals – evaluating possible consequences for exoplanetary systems JF - MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY J2 - MON NOT R ASTRON SOC VL - 466 PY - 2017 IS - 2 SP - 2099 EP - 2110 PG - 12 SN - 0035-8711 DO - 10.1093/mnras/stw3223 UR - https://m2.mtmt.hu/api/publication/3156478 ID - 3156478 N1 - WoS:hiba:000398284600057 2020-08-30 23:37 év nem egyezik AB - This work gives an overview on the general consequences of serpentinization occurring in the planetesimals of any planetary system. These processes were studied by numerical simulations and the model used - based on earlier works - was developed by implementing the effect of interfacial water. As liquid water is fundamentally required for serpentinization, previous simulations considered only such cases when the initial temperature inside the planetesimal was above the melting point of ice thus neglecting the effect of microscopic water layer completely. However, our results show that it must be taken into account and since it facilitates the reaction to occur at temperatures even as low as 200 K - at which bulk liquid water is completely absent - it substantially broadens the initiation of this alteration regarding the range of possible objects. Investigating the effect of changing the initial parameters helps examine the serpentinization in more general terms. Consequently, the findings described here are ubiquitous and can be applied to any exoplanetary system, even if the initial conditions differ considerably from those that were characteristic to our early Solar system. As a first step towards the generalization of such heating processes, we evaluate the role of composition, starting temperature, porosity and planetesimal size on this heating effect. Besides heat generated by decay of radioactive nuclei, serpentinization should be considered as a 'universal process' in the thermal evolution of planetesimals, and variations of parameters considered in this model might provide an insight into differences between objects in various protoplanetary discs. LA - English DB - MTMT ER - TY - JOUR AU - Gucsik, Arnold AU - Nakamura, T. AU - Jäger, C. AU - Ninagawa, K. AU - Nishido, H. AU - Kayama, M. AU - Tsuchiyama, A. AU - Ott, U. AU - Kereszturi, Ákos TI - Luminescence spectroscopical properties of plagioclase particles from the Hayabusa Sample Return Mission: An implication for study of space weathering processes in the asteroid Itokawa JF - MICROSCOPY AND MICROANALYSIS J2 - MICROSC MICROANAL VL - 23 PY - 2017 IS - 1 SP - 179 EP - 186 PG - 8 SN - 1431-9276 DO - 10.1017/S1431927617000046 UR - https://m2.mtmt.hu/api/publication/32033582 ID - 32033582 LA - English DB - MTMT ER - TY - CHAP AU - Gyollai, Ildikó AU - Józsa, Sándor AU - Kereszturi, Ákos AU - Kereszty, Zs AU - Kiss, Klaudia AU - Ringer, Marianna AU - Szabó, Máté Zoltán AU - Szalai, Zoltán AU - Veres, Miklós ED - Griffith, R ED - Hansen, S. TI - Shock alterations in meteorites T2 - Meteorites:Classification, chemical composition, and impacts PB - Nova Science Publishers CY - New York, New York SN - 9781536123456 PY - 2017 SP - 17 EP - 28 PG - 17 UR - https://m2.mtmt.hu/api/publication/3266361 ID - 3266361 LA - English DB - MTMT ER - TY - JOUR AU - Gyollai, Ildikó AU - Kereszturi, Ákos AU - Kereszty, Zs. AU - Szabó, Máté Zoltán AU - Chatzitheodoridis, E. TI - Shock-induced alterations in the recently found H chondrite Csátalja meteorite and its implications JF - CENTRAL EUROPEAN GEOLOGY J2 - CENT EUR GEOL VL - 60 PY - 2017 IS - 2 SP - 173 EP - 200 PG - 28 SN - 1788-2281 DO - 10.1556/24.60.2017.007 UR - https://m2.mtmt.hu/api/publication/3266347 ID - 3266347 AB - Shock-driven annealing of pyroxene and shock deformation of olivine were analyzed in a recently found H chondrite called Csátalja. The most characteristic infrared (IR) spectral shape of shock-annealed sub-grained pyroxene was identified: the strongest peak occurs at 860 cm−1 with a smaller shoulder at 837−840 cm−1, and small bands are at 686, 635−638, and 1,044−1,050 cm−1. The appearance of forbidden bands in pyroxene and shift of band positions to a lower wave number in olivines clearly demonstrate the crystal lattice disordering due to shock metamorphism. The shock annealing produced mixed dark melt along fractures, which consists of feldspar−pyroxene and olivine−pyroxene melt. The dark shock melt at sub-grain boundaries of shocked pyroxenes and along fracture of pyroxenes is characterized by elevated Ca, Na, and Al content relative to its environment, detected by element mapping. So far, shock deformation of pyroxene and olivine was not studied by IR spectroscopy; this method has turned out to be a powerful tool in identifying the mixed composition of shock melt minerals. Further study of shock annealing of minerals, together with the context of shock melting at sub-grain boundaries, will provide a better understanding of the formation of high P–T minerals. http://akademiai.com/doi/pdf/10.1556/24.60.2017.007 LA - English DB - MTMT ER - TY - CHAP AU - Hargitai, Henrik AU - Wang, J. AU - Stooke, P.J. AU - Karachevtseva, I. AU - Kereszturi, Ákos AU - Gede, Mátyás ED - Miljenko, Lapaine ED - E., Lynn Usery TI - Map Projections in Planetary Cartography T2 - Choosing a Map Projection PB - Springer Netherlands CY - Cham (Németország) SN - 9783319518343 T3 - Lecture Notes in Geoinformation and Cartography, ISSN 2195-1705 PY - 2017 SP - 177 EP - 202 PG - 20 DO - 10.1007/978-3-319-51835-0_7 UR - https://m2.mtmt.hu/api/publication/3146247 ID - 3146247 LA - English DB - MTMT ER - TY - JOUR AU - Kereszturi, Ákos AU - Gyollai, Ildikó AU - Kereszty, Zs AU - Kiss, Klaudia AU - Szabó, Máté Zoltán AU - Szalai, Zoltán AU - Ringer, Marianna AU - Veres, Miklós TI - Analyzing Raman – Infrared spectral correlation in the recently found meteorite Csátalja JF - SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY J2 - SPECTROCHIM ACTA A VL - 173 PY - 2017 SP - 637 EP - 646 PG - 10 SN - 1386-1425 DO - 10.1016/j.saa.2016.10.012 UR - https://m2.mtmt.hu/api/publication/3130280 ID - 3130280 LA - English DB - MTMT ER - TY - JOUR AU - Kereszturi, Ákos AU - Steinmann, Vilmos TI - Characteristics of small young lunar impact craters focusing on current production and degradation on the Moon JF - PLANETARY AND SPACE SCIENCE J2 - PLANET SPACE SCI VL - 148 PY - 2017 SP - 12 EP - 27 PG - 16 SN - 0032-0633 DO - 10.1016/j.pss.2017.09.010 UR - https://m2.mtmt.hu/api/publication/3302518 ID - 3302518 LA - English DB - MTMT ER - TY - JOUR AU - Pál, Bernadett AU - Kereszturi, Ákos TI - Possibility of microscopic liquid water formation at landing sites on Mars and their observational potential JF - ICARUS J2 - ICARUS VL - 282 PY - 2017 SP - 84 EP - 92 PG - 9 SN - 0019-1035 DO - 10.1016/j.icarus.2016.09.006 UR - https://m2.mtmt.hu/api/publication/3117302 ID - 3117302 AB - Abstract Microscopic liquid brines, especially calcium-perchlorate could emerge by deliquescence on Mars during night time hours. Using climate model computations and orbital humidity observations, the ideal periods and their annual plus daily characteristics at various past, current and future landing sites were compared. Such results provide context for future analysis and targeting the related observations by the next missions for Mars. Based on the analysis, at most (but not all) past missions’ landing sites, microscopic brine could emerge during night time for different durations. Analysing the conditions at ExoMars rover’s primary landing site at Oxia Planum, the best annual period was found to be between Ls 115 - 225, and in L o c a l T i m e 2 - 5, after midnight. In an ideal case, 4 hours of continuous liquid phase can emerge there. Local conditions might cause values to differ from those estimated by the model. Thermal inertia could especially make such differences (low TI values favour fast cooling and H2O cold trapping at loose surfaces) and the concentration of calcium-perchlorate salt in the regolith also influences the process (it might occur preferentially at long-term exposed surfaces without recent loose dust coverage). These factors should be taken into account while targeting future liquid water observations on Mars. LA - English DB - MTMT ER - TY - JOUR AU - Ramsdale, Jason D AU - Balme, Matthew R AU - Conway, Susan J AU - Gallagher, Colman AU - van Gasselt, Stephan A AU - Hauber, Ernst AU - Orgel, Csilla AU - Séjourné, Antoine AU - Skinner, James A AU - Costard, Francois AU - Johnsson, Andreas AU - Losiak, Anna AU - Reiss, Dennis AU - Swirad, Zuzanna M AU - Kereszturi, Ákos AU - Smith, Isaac B AU - Platz, Thomas TI - Grid-based mapping: A method for rapidly determining the spatial distributions of small features over very large areas JF - PLANETARY AND SPACE SCIENCE J2 - PLANET SPACE SCI VL - 140 PY - 2017 SP - 49 EP - 61 PG - 13 SN - 0032-0633 DO - 10.1016/j.pss.2017.04.002 UR - https://m2.mtmt.hu/api/publication/3249078 ID - 3249078 LA - English DB - MTMT ER - TY - JOUR AU - Dobos, Vera Zsuzsa AU - Kereszturi, Ákos AU - Pál, András AU - Kiss, L. László TI - Possibility for albedo estimation of exomoons: Why should we care about M dwarfs? JF - ASTRONOMY & ASTROPHYSICS J2 - ASTRON ASTROPHYS VL - 592 PY - 2016 PG - 13 SN - 0004-6361 DO - 10.1051/0004-6361/201526672 UR - https://m2.mtmt.hu/api/publication/3096097 ID - 3096097 LA - English DB - MTMT ER - TY - JOUR AU - Domagal-Goldman, S D AU - Wright, K E AU - Adamala, K AU - de la, Rubia R A AU - Bond, J AU - Dartnell, L R AU - Goldman, A D AU - Lynch, K AU - Naud, M -E AU - Paulino-Lima, I G AU - Singer, K AU - Walter-Antonio, M AU - Abrevaya, X C AU - Anderson, R AU - Arney, G AU - Atri, D AU - Azúa-Bustos, A AU - Bowman, J S AU - Brazelton, W J AU - Brennecka, G A AU - Carns, R AU - Chopra, A AU - Colangelo-Lillis, J AU - Crockett, C J AU - DeMarines, J AU - Frank, E A AU - Frantz, C AU - de la, Fuente E AU - Galante, D AU - Glass, J AU - Gleeson, D AU - Glein, C R AU - Goldblatt, C AU - Horak, R AU - Horodyskyj, L AU - Kaçar, B AU - Knowles, E AU - Kereszturi, Ákos AU - Mayeur, P AU - McGlynn, S AU - Miguel, Y AU - Montgomery, M AU - Neish, C AU - Noack, L AU - Rugheimer, S AU - Stüeken, E E AU - Tamez-Hidalgo, P AU - Walker, S I AU - Wong, T TI - The Astrobiology Primer v2.0 JF - ASTROBIOLOGY J2 - ASTROBIOLOGY VL - 16 PY - 2016 IS - 8 SP - 561 EP - 653 PG - 93 SN - 1531-1074 DO - 10.1089/ast.2015.1460 UR - https://m2.mtmt.hu/api/publication/3122816 ID - 3122816 N1 - Megjegyzés-26088218 N1 Funding Details: ANU, Australian National University N1 Funding Details: FAPESP, São Paulo Research Foundation N1 Funding Details: NASA, National Aeronautics and Space Administration N1 Funding Details: NPP/ORAU, ORAU, Oak Ridge Associated Universities AB - Not Available LA - English DB - MTMT ER - TY - JOUR AU - Kereszturi, Ákos AU - Rivera-Valentin, E TI - Possible water lubricated grain movement in the circumpolar region of Mars JF - PLANETARY AND SPACE SCIENCE J2 - PLANET SPACE SCI VL - 125 PY - 2016 SP - 130 EP - 145 PG - 16 SN - 0032-0633 DO - 10.1016/j.pss.2016.03.015 UR - https://m2.mtmt.hu/api/publication/3075385 ID - 3075385 LA - English DB - MTMT ER - TY - JOUR AU - Kereszturi, Ákos AU - Noack, L TI - Review on the role of planetary factors on habitability JF - ORIGINS OF LIFE AND EVOLUTION OF BIOSPHERES J2 - ORIGINS LIFE EVOL B VL - 46 PY - 2016 SP - 473 EP - 486 PG - 14 SN - 0169-6149 DO - 10.1007/s11084-016-9514-1 UR - https://m2.mtmt.hu/api/publication/3088922 ID - 3088922 LA - English DB - MTMT ER - TY - JOUR AU - Kereszturi, Ákos AU - Chathiteodoridis, E TI - Searching for the source crater of nakhlite meteorites JF - ORIGINS OF LIFE AND EVOLUTION OF BIOSPHERES J2 - ORIGINS LIFE EVOL B VL - 46 PY - 2016 SP - 455 EP - 471 PG - 17 SN - 0169-6149 DO - 10.1007/s11084-016-9498-x UR - https://m2.mtmt.hu/api/publication/3088941 ID - 3088941 LA - English DB - MTMT ER - TY - JOUR AU - Kereszturi, Ákos AU - Ormándi, Szilvia AU - Józsa, Sándor TI - Possible melting produced chondrule destruction in NWA 6604 CK4 chondrite JF - METEORITICS & PLANETARY SCIENCE J2 - METEORIT PLANET SCI VL - 50 PY - 2015 IS - 7 SP - 1295 EP - 1309 PG - 15 SN - 1086-9379 DO - 10.1111/maps.12458 UR - https://m2.mtmt.hu/api/publication/2922726 ID - 2922726 LA - English DB - MTMT ER - TY - JOUR AU - Kereszturi, Ákos AU - Ormándi, Szilvia AU - Józsa, Sándor TI - Processing in a transitional environment of CV and CK chondrites' parent bodies in the light of mineralogical and petrological analysis of NWA 1465 CV3 meteorite JF - PLANETARY AND SPACE SCIENCE J2 - PLANET SPACE SCI VL - 109 PY - 2015 SP - 175 EP - 186 PG - 12 SN - 0032-0633 DO - 10.1016/j.pss.2015.02.016 UR - https://m2.mtmt.hu/api/publication/2879279 ID - 2879279 LA - English DB - MTMT ER - TY - JOUR AU - Kereszturi, Ákos AU - Gyollai, Ildikó AU - Szabó, Máté Zoltán TI - Case study of chondrule alteration with IR spectroscopy in NWA 2086 CV3 meteorite JF - PLANETARY AND SPACE SCIENCE J2 - PLANET SPACE SCI VL - 106 PY - 2015 SP - 122 EP - 131 PG - 10 SN - 0032-0633 DO - 10.1016/j.pss.2014.12.015 UR - https://m2.mtmt.hu/api/publication/2815474 ID - 2815474 LA - English DB - MTMT ER - TY - JOUR AU - Kereszturi, Ákos TI - Case study of climatic changes in Martian fluvial systems at Xanthe Terra JF - PLANETARY AND SPACE SCIENCE J2 - PLANET SPACE SCI VL - 96 PY - 2014 SP - 35 EP - 50 PG - 16 SN - 0032-0633 DO - 10.1016/j.pss.2014.03.014 UR - https://m2.mtmt.hu/api/publication/2598176 ID - 2598176 LA - English DB - MTMT ER - TY - JOUR AU - Kereszturi, Ákos AU - Góbi, Sándor TI - Possibility of Hˇ2Oˇ2 decomposition in thin liquid films on Mars JF - PLANETARY AND SPACE SCIENCE J2 - PLANET SPACE SCI VL - 103 PY - 2014 SP - 153 EP - 166 PG - 14 SN - 0032-0633 DO - 10.1016/j.pss.2014.07.017 UR - https://m2.mtmt.hu/api/publication/2744772 ID - 2744772 AB - Abstract In this work the pathways and possibilities of H2O2 decomposition on Mars in microscopic liquid interfacial water were analyzed by kinetic calculations. Thermal and photochemical driven decomposition, just like processes catalyzed by various metal oxides, is too slow compared to the annual duration while such microscopic liquid layers exist on Mars today, to produce substantial decomposition. The most effective analyzed process is catalyzed by Fe ions, which could decompose H2O2 under pH<4.5 with a half life of 1–2 days. This process might be important during volcanically influenced periods when sulfur release produces acidic pH, and rotational axis tilt change driven climatic changes also influence the volatile circulation and spatial occurrence just like the duration of thin liquid layer. Under current conditions, using the value of 200 K as the temperature in interfacial water (at the southern hemisphere), and applying Phoenix lander׳s wet chemistry laboratory results, the pH is not favorable for Fe mobility and this kind of decomposition. Despite current conditions (especially pH) being unfavorable for H2O2 decomposition, microscopic scale interfacial liquid water still might support the process. By the reaction called heterogeneous catalysis, without acidic pH and mobile Fe, but with minerals surfaces containing Fe decomposition of H2O2 with half life of 20 days can happen. This duration is still longer but not several orders than the existence of springtime interfacial liquid water on Mars today. This estimation is relevant for activation energy controlled reaction rates. The other main parameter that may influence the reaction rate is the diffusion speed. Although the available tests and theoretical calculations do not provide firm values for the diffusion speed in such a “2-dimensional” environment, using relevant estimations this parameter in the interfacial liquid layer is smaller than in bulk water. But the 20 days׳ duration mentioned above is still relevant, as the activation energy driven reaction rate is the main limiting factor in the decomposition and not the diffusion speed. The duration of dozen(s) days is still longer but not with orders of magnitude than the expected duration for the existence of springtime interfacial liquid water on Mars today. The results suggest such decomposition may happen today, however, because of our limited knowledge on chemical processes in thin interfacial liquid layers, this possibility waits for confirmation – and also points to the importance of conducting laboratory tests to validate the possible process. Although some tests were already realized for diffusion in an almost 2-dimensional liquid, the same is not true for activation energy, where only the value from the “normal” measurements was applied. Even if H2O2 decomposition is too slow today, the analysis of such a process is important, as under volcanic influence more effective decomposition might take place in thin interfacial liquids close to the climate of today if released sulfur produces pH<4.5. Large quantity and widespread occurrence of bulk liquid phase are not expected in the Amazonian period, but interfacial liquid water probably appeared regularly, and its locations, especially during volcanically active periods, might make certain sites than others more interesting for astrobiology with the lower concentration of oxidizing H2O2. LA - English DB - MTMT ER - TY - JOUR AU - Kereszturi, Ákos TI - Surface processes in microgravity for landing and sampling site selection of asteroid missions – suggestions for MarcoPolo-R JF - PLANETARY AND SPACE SCIENCE J2 - PLANET SPACE SCI VL - 101 PY - 2014 SP - 65 EP - 76 PG - 12 SN - 0032-0633 DO - 10.1016/j.pss.2014.06.005 UR - https://m2.mtmt.hu/api/publication/2727406 ID - 2727406 LA - English DB - MTMT ER - TY - JOUR AU - Orgel, Csilla AU - Kereszturi, Ákos AU - Váczi, Tamás AU - Groemer, G. AU - Sattler, B. TI - Scientific Results and Lessons Learned from an Integrated Crewed Mars Exploration Simulation at the Rio Tinto Mars Analogue Site. JF - ACTA ASTRONAUTICA J2 - ACTA ASTRONAUT VL - 94 PY - 2014 IS - 2 SP - 736 EP - 748 PG - 13 SN - 0094-5765 DO - 10.1016/j.actaastro.2013.09.014 UR - https://m2.mtmt.hu/api/publication/2471183 ID - 2471183 LA - English DB - MTMT ER - TY - JOUR AU - Kereszturi, Ákos AU - Rivera-Valentin, EG TI - Locations of thin liquid water layers on present-day Mars JF - ICARUS J2 - ICARUS VL - 221 PY - 2012 IS - 1 SP - 289 EP - 295 PG - 7 SN - 0019-1035 DO - 10.1016/j.icarus.2012.08.004 UR - https://m2.mtmt.hu/api/publication/2198257 ID - 2198257 LA - English DB - MTMT ER - TY - JOUR AU - Kereszturi, Ákos TI - Crater wall outcrop analysis for targeting subsurface sampling on Mars JF - PLANETARY AND SPACE SCIENCE J2 - PLANET SPACE SCI VL - 67 PY - 2012 IS - 1 SP - 14 EP - 27 PG - 14 SN - 0032-0633 DO - 10.1016/j.pss.2012.02.011 UR - https://m2.mtmt.hu/api/publication/2198278 ID - 2198278 LA - English DB - MTMT ER - TY - JOUR AU - Kereszturi, Ákos TI - Landing site rationality scaling for subsurface sampling on Mars—Case study for ExoMars Rover-like missions JF - PLANETARY AND SPACE SCIENCE J2 - PLANET SPACE SCI VL - 72 PY - 2012 IS - 1 SP - 78 EP - 90 PG - 13 SN - 0032-0633 DO - 10.1016/j.pss.2012.07.007 UR - https://m2.mtmt.hu/api/publication/2198261 ID - 2198261 LA - English DB - MTMT ER - TY - JOUR AU - Kereszturi, Ákos TI - Review of wet environment types on Mars with focus on duration and volumetric issues. JF - ASTROBIOLOGY J2 - ASTROBIOLOGY VL - 12 PY - 2012 IS - 6 SP - 586 EP - 600 PG - 15 SN - 1531-1074 DO - 10.1089/ast.2011.0686 UR - https://m2.mtmt.hu/api/publication/2198272 ID - 2198272 LA - English DB - MTMT ER - TY - JOUR AU - Marschall, Marianna AU - Dulai, Sándor András AU - Kereszturi, Ákos TI - Migrating and UVscreening subsurface zone on Mars as target for the analysis of photosynthetic life and astrobiology JF - PLANETARY AND SPACE SCIENCE J2 - PLANET SPACE SCI VL - 72 PY - 2012 IS - 1 SP - 146 EP - 153 PG - 8 SN - 0032-0633 DO - 10.1016/j.pss.2012.05.019 UR - https://m2.mtmt.hu/api/publication/2016957 ID - 2016957 LA - English DB - MTMT ER - TY - JOUR AU - Nagy, S AU - Józsa, Sándor AU - Gucsik, Arnold AU - Bérczi, Szaniszló AU - Ninagawa, K AU - Nishido, H AU - Veres, Miklós AU - Kereszturi, Ákos AU - Hargitai, Henrik TI - Shock and thermal annealing history of the ALH 77005 Martian meteorite: A micro-Raman spectroscopical investigation JF - CENTRAL EUROPEAN GEOLOGY J2 - CENT EUR GEOL VL - 55 PY - 2012 IS - 1 SP - 33 EP - 48 PG - 16 SN - 1788-2281 DO - 10.1556/CEuGeol.55.2012.1.3 UR - https://m2.mtmt.hu/api/publication/2149903 ID - 2149903 AB - We studied optical microscopic and micro-Raman spectroscopic signatures of shocked olivine from the ALH 77005 Martian meteorite sample. The purpose of this study is to document pressure and temperature-related effects in olivine over the entire sample, which can aid in understanding structural changes due to shock metamorphism and the post-shock thermal annealing processes of lherzolitic Martian meteorites. According to the optical microscope observations, three areas may be discernible in olivine of the ALH 77005 in the vicinity of the melt pocket. The first area is the thermally undisturbed part of a grain, which contains a high density of shock-induced planar microdeformations such as Planar Deformation Features (PDFs) and Planar Fractures (PFs). Compared to the first area, the second area shows less shock-induced microstructures, while the third area is a strongly recrystallized region, but not formed from a melt.A common Raman spectral feature of these olivines is a regular doublet peak centered at 823 and 852 cm-1; additionally, two new peaks at 535 and 755 cm -1 appear in the weakly annealed transition zones. LA - English DB - MTMT ER - TY - JOUR AU - Kereszturi, Ákos TI - Geologic field work on Mars: distance and time issues during surface exploration JF - ACTA ASTRONAUTICA J2 - ACTA ASTRONAUT VL - 68 PY - 2011 IS - 11-12 SP - 1686 EP - 1701 PG - 16 SN - 0094-5765 DO - 10.1016/j.actaastro.2010.11.008 UR - https://m2.mtmt.hu/api/publication/2199436 ID - 2199436 LA - English DB - MTMT ER - TY - JOUR AU - Kereszturi, Ákos TI - Analysis of two sections of Shalbatana Vallis' tributary channels JF - PLANETARY AND SPACE SCIENCE J2 - PLANET SPACE SCI VL - 58 PY - 2010 IS - 14-15 SP - 2008 EP - 2021 PG - 14 SN - 0032-0633 DO - 10.1016/j.pss.2010.10.001 UR - https://m2.mtmt.hu/api/publication/2810238 ID - 2810238 LA - English DB - MTMT ER - TY - CONF AU - Horvai, F AU - Kereszturi, Ákos TI - Geology of Mars: New University Course in Hungary T2 - 40th Lunar and Planetary Science Conference PB - Lunar and Planetary Institute C1 - Houston (TX) T3 - LPI Contribution Series ; 1468. PY - 2009 UR - https://m2.mtmt.hu/api/publication/2812765 ID - 2812765 LA - English DB - MTMT ER -