A Stringent Upper Limit of 20 Pptv for Methane on Mars and Constraints on Its Dispersion Outside Gale Crater Franck Montmessin, Oleg Korablev, A
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A Stringent Upper Limit of 20 Pptv for Methane on Mars and Constraints on Its Dispersion Outside Gale Crater F
A&A 650, A140 (2021) Astronomy https://doi.org/10.1051/0004-6361/202140389 & © F. Montmessin et al. 2021 Astrophysics A stringent upper limit of 20 pptv for methane on Mars and constraints on its dispersion outside Gale crater F. Montmessin1 , O. I. Korablev2 , A. Trokhimovskiy2 , F. Lefèvre3 , A. A. Fedorova2 , L. Baggio1 , A. Irbah1 , G. Lacombe1, K. S. Olsen4 , A. S. Braude1 , D. A. Belyaev2 , J. Alday4 , F. Forget5 , F. Daerden6, J. Pla-Garcia7,8 , S. Rafkin8 , C. F. Wilson4, A. Patrakeev2, A. Shakun2, and J. L. Bertaux1 1 LATMOS/IPSL, UVSQ Université Paris-Saclay, Sorbonne Université, CNRS, Guyancourt, France e-mail: [email protected] 2 Space Research Institute (IKI) RAS, Moscow, Russia 3 LATMOS/IPSL, Sorbonne Université, UVSQ Université Paris-Saclay, CNRS, Paris, France 4 AOPP, Oxford University, Oxford, UK 5 Laboratoire de Météorologie Dynamique, Sorbonne Université, Paris, France 6 BIRA-IASB, Bruxelles, Belgium 7 Centro de Astrobiología (CSIC?INTA), Torrejón de Ardoz, Spain 8 Southwest Research Institute, Boulder, CO, USA Received 20 January 2021 / Accepted 23 April 2021 ABSTRACT Context. Reports on the detection of methane in the Martian atmosphere have motivated numerous studies aiming to confirm or explain its presence on a planet where it might imply a biogenic or more likely a geophysical origin. Aims. Our intent is to complement and improve on the previously reported detection attempts by the Atmospheric Chemistry Suite (ACS) on board the ExoMars Trace Gas Orbiter (TGO). This latter study reported the results of a campaign that was a few months in length, and was significantly hindered by a dusty period that impaired detection performances. -
The Mystery of Methane on Mars and Titan
The Mystery of Methane on Mars & Titan By Sushil K. Atreya MARS has long been thought of as a possible abode of life. The discovery of methane in its atmosphere has rekindled those visions. The visible face of Mars looks nearly static, apart from a few wispy clouds (white). But the methane hints at a beehive of biological or geochemical activity underground. Of all the planets in the solar system other than Earth, own way, revealing either that we are not alone in the universe Mars has arguably the greatest potential for life, either extinct or that both Mars and Titan harbor large underground bodies or extant. It resembles Earth in so many ways: its formation of water together with unexpected levels of geochemical activ- process, its early climate history, its reservoirs of water, its vol- ity. Understanding the origin and fate of methane on these bod- canoes and other geologic processes. Microorganisms would fit ies will provide crucial clues to the processes that shape the right in. Another planetary body, Saturn’s largest moon Titan, formation, evolution and habitability of terrestrial worlds in also routinely comes up in discussions of extraterrestrial biology. this solar system and possibly in others. In its primordial past, Titan possessed conditions conducive to Methane (CH4) is abundant on the giant planets—Jupiter, the formation of molecular precursors of life, and some scientists Saturn, Uranus and Neptune—where it was the product of chem- believe it may have been alive then and might even be alive now. ical processing of primordial solar nebula material. On Earth, To add intrigue to these possibilities, astronomers studying though, methane is special. -
General Index
General Index Italicized page numbers indicate figures and tables. Color plates are in- cussed; full listings of authors’ works as cited in this volume may be dicated as “pl.” Color plates 1– 40 are in part 1 and plates 41–80 are found in the bibliographical index. in part 2. Authors are listed only when their ideas or works are dis- Aa, Pieter van der (1659–1733), 1338 of military cartography, 971 934 –39; Genoa, 864 –65; Low Coun- Aa River, pl.61, 1523 of nautical charts, 1069, 1424 tries, 1257 Aachen, 1241 printing’s impact on, 607–8 of Dutch hamlets, 1264 Abate, Agostino, 857–58, 864 –65 role of sources in, 66 –67 ecclesiastical subdivisions in, 1090, 1091 Abbeys. See also Cartularies; Monasteries of Russian maps, 1873 of forests, 50 maps: property, 50–51; water system, 43 standards of, 7 German maps in context of, 1224, 1225 plans: juridical uses of, pl.61, 1523–24, studies of, 505–8, 1258 n.53 map consciousness in, 636, 661–62 1525; Wildmore Fen (in psalter), 43– 44 of surveys, 505–8, 708, 1435–36 maps in: cadastral (See Cadastral maps); Abbreviations, 1897, 1899 of town models, 489 central Italy, 909–15; characteristics of, Abreu, Lisuarte de, 1019 Acequia Imperial de Aragón, 507 874 –75, 880 –82; coloring of, 1499, Abruzzi River, 547, 570 Acerra, 951 1588; East-Central Europe, 1806, 1808; Absolutism, 831, 833, 835–36 Ackerman, James S., 427 n.2 England, 50 –51, 1595, 1599, 1603, See also Sovereigns and monarchs Aconcio, Jacopo (d. 1566), 1611 1615, 1629, 1720; France, 1497–1500, Abstraction Acosta, José de (1539–1600), 1235 1501; humanism linked to, 909–10; in- in bird’s-eye views, 688 Acquaviva, Andrea Matteo (d. -
Martian Crater Morphology
ANALYSIS OF THE DEPTH-DIAMETER RELATIONSHIP OF MARTIAN CRATERS A Capstone Experience Thesis Presented by Jared Howenstine Completion Date: May 2006 Approved By: Professor M. Darby Dyar, Astronomy Professor Christopher Condit, Geology Professor Judith Young, Astronomy Abstract Title: Analysis of the Depth-Diameter Relationship of Martian Craters Author: Jared Howenstine, Astronomy Approved By: Judith Young, Astronomy Approved By: M. Darby Dyar, Astronomy Approved By: Christopher Condit, Geology CE Type: Departmental Honors Project Using a gridded version of maritan topography with the computer program Gridview, this project studied the depth-diameter relationship of martian impact craters. The work encompasses 361 profiles of impacts with diameters larger than 15 kilometers and is a continuation of work that was started at the Lunar and Planetary Institute in Houston, Texas under the guidance of Dr. Walter S. Keifer. Using the most ‘pristine,’ or deepest craters in the data a depth-diameter relationship was determined: d = 0.610D 0.327 , where d is the depth of the crater and D is the diameter of the crater, both in kilometers. This relationship can then be used to estimate the theoretical depth of any impact radius, and therefore can be used to estimate the pristine shape of the crater. With a depth-diameter ratio for a particular crater, the measured depth can then be compared to this theoretical value and an estimate of the amount of material within the crater, or fill, can then be calculated. The data includes 140 named impact craters, 3 basins, and 218 other impacts. The named data encompasses all named impact structures of greater than 100 kilometers in diameter. -
Aurora Crater (Updated 2015)
Site Description Aurora Crater (Updated 2015) Geologic setting: The Aurora Crater geothermal area is located in western Mineral County, northeast of Mono Lake. The geothermal area sits within an area known as the Aurora-Bodie volcanic field. The Bodie Hills are located to the west while the Wassuk Range is located to the east. The rocks in this region are composed of Calc-alkaline andesite, dacite and trachyandesite lavas, breccias and ashflow tuffs, deposited between 15 and 8 million years ago. These units are overlain by a series of younger alkaline- calcic cinder cone deposits and flows. Aurora Crater, located approximately 6 km southwest of the Aurora Crater geothermal area, is a 250,000 year old breached crater surrounded by lava flows. This region has been abundantly cut by faults and covered in ash from more recent eruptions from the Mono Craters to the southwest (Geologic Points of Interest by Activity – Volcanic Activity). Gold and silver deposits found in Miocene volcanic rocks were mined in both Bodie (CA) and Aurora (NV) until the 1950s (Geologic Points of Interest by Activity – Volcanic Activity). The Aurora District was the most productive mining district in Mineral County. Between 1861 and 1869, nearly $29,500,000 in gold and silver were produced from the Aurora mines (Ross, 1961). Geothermal features: A blind geothermal anomaly is reported between Aurora Crater and the Borealis open-pit gold mine 12 km northeast (Richards and Blackwell, 2002). The Aurora prospect consists of 29,000 acres in an area of Quaternary basaltic volcanism. Seventeen temperature gradient wells indicate a large geothermal anomaly. -
Evidence for Methane in Martian Meteorites
Blamey, N. J. F., Parnell, J., McMahon, S., Mark, D. F., Tomkinson, T., Lee, M., Shivak, J., Izawa, M. R. M., Banerjee, N. R., & Flemming, R. L. (2015). Evidence for methane in Martian meteorites. Nature Communications, 6, [7399]. https://doi.org/10.1038/ncomms8399 Publisher's PDF, also known as Version of record License (if available): CC BY Link to published version (if available): 10.1038/ncomms8399 Link to publication record in Explore Bristol Research PDF-document This is the final published version of the article (version of record). It first appeared online via Nature Publishing Group at doi:10.1038/ncomms8399. Please refer to any applicable terms of use of the publisher. University of Bristol - Explore Bristol Research General rights This document is made available in accordance with publisher policies. Please cite only the published version using the reference above. Full terms of use are available: http://www.bristol.ac.uk/red/research-policy/pure/user-guides/ebr-terms/ ARTICLE Received 19 Sep 2014 | Accepted 1 May 2015 | Published 16 Jun 2015 DOI: 10.1038/ncomms8399 OPEN Evidence for methane in Martian meteorites Nigel J.F. Blamey1,2, John Parnell2, Sean McMahon2, Darren F. Mark3, Tim Tomkinson3,4, Martin Lee4, Jared Shivak5, Matthew R.M. Izawa5, Neil R. Banerjee5 & Roberta L. Flemming5 The putative occurrence of methane in the Martian atmosphere has had a major influence on the exploration of Mars, especially by the implication of active biology. The occurrence has not been borne out by measurements of atmosphere by the MSL rover Curiosity but, as on Earth, methane on Mars is most likely in the subsurface of the crust. -
Experience of 80 Cases with Fournier's Gangrene and “Trauma” As a Trigger
ORIGINAL ARTICLE Experience of 80 cases with Fournier’s gangrene and “trauma” as a trigger factor in the etiopathogenesis Teoman Eskitaşcıoğlu, M.D., İrfan Özyazgan, M.D., Atilla Coruh, M.D., Galip K Günay, M.D., Mehmet Altıparmak, M.D., Yalcin Yontar, M.D., Fatih Doğan, M.D.† Department of Plastic Reconstructive and Aesthetic Surgery, Erciyes University Faculty of Medicine, Kayseri †Current affiliation: Department of Plastic Reconstructive and Aesthetic Surgery, Adıyaman University Faculty of Medicine, Adıyaman ABSTRACT BACKGROUND: The purpose of the present study was to retrospectively analyze the patients’ data presented with Fournier’s gangrene (FG), to compare obtained data with the literature and to investigate the role of “trauma” in the etiopathogenesis. METHODS: A retrospective study was conducted on 126 patients with FG that consulted to our department. RESULTS: There were 76 male and four female patients. The mean age of the patients was 53.5±13.6 years. The most common presentation of patients was swelling (n=74). The scrotum has been shown to be the most commonly affected area in the patients (n=75). Diabetes mellitus was the leading predisposing factor and trauma was the leading responsible cause for FG. Escherichia coli was the most frequently identified microorganism (n=43, 53.75%). Primary closure was the most common technique used for all patients. Three patients exhibited a mortal course due to sepsis and multi-organ failure. CONCLUSION: FG still has a high mortality rate. Rapid and correct diagnosis of the disease can avoid inappropriate or delayed treatment and even death of the patient. The healthcare professionals should be aware that any trauma in the perineal region could lead to FG. -
Pre-Mission Insights on the Interior of Mars Suzanne E
Pre-mission InSights on the Interior of Mars Suzanne E. Smrekar, Philippe Lognonné, Tilman Spohn, W. Bruce Banerdt, Doris Breuer, Ulrich Christensen, Véronique Dehant, Mélanie Drilleau, William Folkner, Nobuaki Fuji, et al. To cite this version: Suzanne E. Smrekar, Philippe Lognonné, Tilman Spohn, W. Bruce Banerdt, Doris Breuer, et al.. Pre-mission InSights on the Interior of Mars. Space Science Reviews, Springer Verlag, 2019, 215 (1), pp.1-72. 10.1007/s11214-018-0563-9. hal-01990798 HAL Id: hal-01990798 https://hal.archives-ouvertes.fr/hal-01990798 Submitted on 23 Jan 2019 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Open Archive Toulouse Archive Ouverte (OATAO ) OATAO is an open access repository that collects the wor of some Toulouse researchers and ma es it freely available over the web where possible. This is an author's version published in: https://oatao.univ-toulouse.fr/21690 Official URL : https://doi.org/10.1007/s11214-018-0563-9 To cite this version : Smrekar, Suzanne E. and Lognonné, Philippe and Spohn, Tilman ,... [et al.]. Pre-mission InSights on the Interior of Mars. (2019) Space Science Reviews, 215 (1). -
Appendix I Lunar and Martian Nomenclature
APPENDIX I LUNAR AND MARTIAN NOMENCLATURE LUNAR AND MARTIAN NOMENCLATURE A large number of names of craters and other features on the Moon and Mars, were accepted by the IAU General Assemblies X (Moscow, 1958), XI (Berkeley, 1961), XII (Hamburg, 1964), XIV (Brighton, 1970), and XV (Sydney, 1973). The names were suggested by the appropriate IAU Commissions (16 and 17). In particular the Lunar names accepted at the XIVth and XVth General Assemblies were recommended by the 'Working Group on Lunar Nomenclature' under the Chairmanship of Dr D. H. Menzel. The Martian names were suggested by the 'Working Group on Martian Nomenclature' under the Chairmanship of Dr G. de Vaucouleurs. At the XVth General Assembly a new 'Working Group on Planetary System Nomenclature' was formed (Chairman: Dr P. M. Millman) comprising various Task Groups, one for each particular subject. For further references see: [AU Trans. X, 259-263, 1960; XIB, 236-238, 1962; Xlffi, 203-204, 1966; xnffi, 99-105, 1968; XIVB, 63, 129, 139, 1971; Space Sci. Rev. 12, 136-186, 1971. Because at the recent General Assemblies some small changes, or corrections, were made, the complete list of Lunar and Martian Topographic Features is published here. Table 1 Lunar Craters Abbe 58S,174E Balboa 19N,83W Abbot 6N,55E Baldet 54S, 151W Abel 34S,85E Balmer 20S,70E Abul Wafa 2N,ll7E Banachiewicz 5N,80E Adams 32S,69E Banting 26N,16E Aitken 17S,173E Barbier 248, 158E AI-Biruni 18N,93E Barnard 30S,86E Alden 24S, lllE Barringer 29S,151W Aldrin I.4N,22.1E Bartels 24N,90W Alekhin 68S,131W Becquerei -
Life on Mars- Extracting the Signs for Future Human Habitation on The
Muhammad Shadab Khan, Department of Aeronautical Engineering, Babu Banarasi Das National Institute of Technology and Management, Lucknow, India CONTENT- Introduction Life on Mars Signs of Life Found on Mars and Similarities with those signs on Earth Utilizing Life Support Resources present on Mars for human habitation INTRODUCTION 1- Rise of Global Warming and it’s alarming consequences which might cause complete loss of life on Earth– Search for an Earth like habitable body in the outer Space 2- Ongoing Exploration of Mars in search of Life on the Red Planet for future human habitation on the planet. 3- Mars is the planet which is very similar to Earth and it’s believed that Life had existed on Mars in the Past– Big support to our quest for life in the future 4- The life supporting features found on Mars are very similar to those found on Earth– Giving a sign of prospective life in the near future on Mars Life on Mars Life on Mars has been a subject of wide discussion from the very early beginning. There has been speculations about the existence of Life on the Red Planet in the Past But still about the presence of an Earth like habitable environment on Mars is a BIG QUESTION ? The first search for Life on Mars was carried out by NASA’s VIKING LANDER in 1976 Gas Chromatograph/Mass Spectrometer Instrument on the Lander detected the possible MICROBIAL LIFE in the soil sample . The question about MICROBIAL LIFE remains unresolved LIQUID WATER ON MARS The speculation about the presence of LIQUID WATER on Mars has been a subject of deep interest to the scientists from the very beginning As it’s believed in order to support LIFE, the need of WATER in LIQUID FORM is MUST. -
Schultze-Makuch Methane Mars.Pdf
International Journal of Astrobiology 7 (2): 117–141 (2008) Printed in the United Kingdom 117 doi:10.1017/S1473550408004175 f 2008 Cambridge University Press The case for life on Mars Dirk Schulze-Makuch1, Alberto G. Faire´n2 and Alfonso F. Davila2 1School of Earth and Environmental Sciences, Washington State University, Pullman, WA 99163, USA e-mail: [email protected] 2Space Science and Astrobiology Division, NASA Ames Research Center, USA Abstract: There have been several attempts to answer the question of whether there is, or has ever been, life on Mars. The boldest attempt was the only ever life detection experiment conducted on another planet: the Viking mission. The mission was a great success, but it failed to provide a clear answer to the question of life on Mars. More than 30 years after the Viking mission our understanding of the history and evolution of Mars has increased vastly to reveal a wetter Martian past and the occurrence of diverse environments that could have supported microbial life similar to that on Earth for extended periods of time. The discovery of Terran extremophilic microorganisms, adapted to environments previously though to be prohibitive for life, has greatly expanded the limits of habitability in our Solar System, and has opened new avenues for the search of life on Mars. Remnants of a possible early biosphere may be found in the Martian meteorite ALH84001. This claim is based on a collection of facts and observations consistent with biogenic origins, but individual links in the collective chain of evidence remain controversial. Recent evidence for contemporary liquid water on Mars and the detection of methane in the Martian atmosphere further enhance the case for life on Mars. -
Science-Centric Sampling Approaches of Geo-Physical Environments for Realistic Robot Navigation
SCIENCE-CENTRIC SAMPLING APPROACHES OF GEO-PHYSICAL ENVIRONMENTS FOR REALISTIC ROBOT NAVIGATION A Thesis Presented to The Academic Faculty by Lonnie T. Parker, IV In Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the School of Electrical and Computer Engineering Georgia Institute of Technology August 2012 Copyright c 2012 by Lonnie T. Parker, IV SCIENCE-CENTRIC SAMPLING APPROACHES OF GEO-PHYSICAL ENVIRONMENTS FOR REALISTIC ROBOT NAVIGATION Approved by: Professor Ayanna M. Howard, Advisor Professor Jeff Shamma School of Electrical and Computer School of Electrical and Computer Engineering Engineering Georgia Institute of Technology Georgia Institute of Technology Professor Fumin Zhang Professor Mike Stilman School of Electrical and Computer College of Computing Engineering Georgia Institute of Technology Georgia Institute of Technology Professor George Riley Date Approved: June 15, 2012 School of Electrical and Computer Engineering Georgia Institute of Technology DEDICATION Based upon the infallible word of God, I dedicate this work to Him, according to Proverbs 16:3. iii ACKNOWLEDGEMENTS Before anyone else, I want to acknowledge and thank my Lord and Savior, Jesus Christ, whom I am in and who lives within me. This degree and this experience would not be possible without His provision, favor, and grace. Especially in the moments when I did not believe it was possible to finish, my faith in Him pushed me forward. Next, to my wife, Andrea, who has been my constant encourager, supporter, and living reminder that I could complete this journey, thank you. Simply your presence in my life has made this walk all the more bearable. I love you.