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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. -
Workshop on Mars Telescopic Observations
WORKSHCPON MARS TELESCOPIC OBSERVATIONS 90' 180'-;~~~~~~------------------..~~------------~~----..~o~,· 270' LPI Technical Report Number 95-04 Lunar and Planetary Institute 3600 Bay Area Boulevard Houston TX 77058-1113 LPIITR--95-04 WORKSHOP ON MARS TELESCOPIC OBSERVATIONS Edited by J. F. Bell III and J. E. Moersch Held at Cornell University, Ithaca, New York August 14-15, 1995 Sponsored by Lunar and Planetary Institute Lunar and Planetary Institute 3600 Bay Area Boulevard Houston TX 77058-1113 LPI Technical Report Number 95-04 LPIITR--95-04 Compiled in 1995 by LUNAR AND PLANETARY INSTITUTE The Institute is operated by the Universities Space Research Association under Contract No. NASW-4574 with the National Aeronautics and Space Administration. Material in this volume may be copied without restraint for library, abstract service, education, or personal research purposes; however, republication of any paper or portion thereof requires the written permission of the authors as well as the appropriate acknowledgment of this publication. This report may be cited as Bell J. F.III and Moersch J. E., eds. (1995) Workshop on Mars Telescopic Observations. LPI Tech. Rpt. 95-04, Lunar and Planetary Institute, Houston. 33 pp. This report is distributed by ORDER DEPARTMENT Lunar and Planetary Institute 3600 Bay Area Boulevard Houston TX 77058-1113 Mail order requestors will be invoiced for the cost ofshipping and handling. Cover: Orbits of Mars (outer ellipse) and Earth (inner ellipse) showing oppositions of the planet from 1954to 1999. From C. Aammarion (1954) The Flammarion Book ofAstronomy, Simon and Schuster, New York. LPl Technical Report 95-04 iii Introduction The Mars Telescopic Observations Workshop, held August 14-15, 1995, at Cornell University in Ithaca, New York, was organized and planned with two primary goals in mind: The first goal was to facilitate discussions among and between amateur and professional observers and to create a workshop environment fostering collaborations and comparisons within the Mars ob serving community. -
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 -
The Role of External Factors in the Variability of the Structure of the Zooplankton Community of Small Lakes (South-East Kazakhstan)
water Article The Role of External Factors in the Variability of the Structure of the Zooplankton Community of Small Lakes (South-East Kazakhstan) Moldir Aubakirova 1,2,*, Elena Krupa 3 , Zhanara Mazhibayeva 2, Kuanysh Isbekov 2 and Saule Assylbekova 2 1 Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan 2 Fisheries Research and Production Center, Almaty 050016, Kazakhstan; mazhibayeva@fishrpc.kz (Z.M.); isbekov@fishrpc.kz (K.I.); assylbekova@fishrpc.kz (S.A.) 3 Institute of Zoology, Almaty 050060, Kazakhstan; [email protected] * Correspondence: [email protected]; Tel.: +7-27-3831715 Abstract: The variability of hydrochemical parameters, the heterogeneity of the habitat, and a low level of anthropogenic impact, create the premises for conserving the high biodiversity of aquatic communities of small water bodies. The study of small water bodies contributes to understanding aquatic organisms’ adaptation to sharp fluctuations in external factors. Studies of biological com- munities’ response to fluctuations in external factors can be used for bioindication of the ecological state of small water bodies. In this regard, the purpose of the research is to study the structure of zooplankton of small lakes in South-East Kazakhstan in connection with various physicochemical parameters to understand the role of biological variables in assessing the ecological state of aquatic Citation: Aubakirova, M.; Krupa, E.; ecosystems. According to hydrochemical data in summer 2019, the nutrient content was relatively Mazhibayeva, Z.; Isbekov, K.; high in all studied lakes. A total of 74 species were recorded in phytoplankton. The phytoplankton Assylbekova, S. The Role of External abundance varied significantly, from 8.5 × 107 to 2.71667 × 109 cells/m3, with a biomass from 0.4 Factors in the Variability of the to 15.81 g/m3. -
Liquid Water on Mars
Report, Planetary Sciences Unit (AST80015), Swinburne Astronomy Online Preprint typeset using LATEX style emulateapj v. 12/16/11 LIQUID WATER ON MARS M. Usatov1 Report, Planetary Sciences Unit (AST80015), Swinburne Astronomy Online ABSTRACT Geomorphological, mineralogical and other evidence of the conditions favoring the existence of water on Mars in liquid phase is reviewed. This includes signatures of past and, possibly, present aqueous environments, such as the northern ocean, lacustrine environments, sedimentary and thermokarst landforms, glacial activity and water erosion features. Reviewed also are hydrous weathering processes, observed on surface remotely and also via analysis of Martian meteorites. Chemistry of Martian water is discussed: the triple point, salts and brines, as well as undercooled liquid interfacial and solid-state greenhouse effect melted waters that may still be present on Mars. Current understanding of the evolution of Martian hydrosphere over geological timescales is presented from early period to the present time, along with the discussion of alternative interpretations and possibilities of dry and wet Mars extremes. 1. INTRODUCTION morphological and mineralogical evidence of aqueous en- The presence of water on Earth, as seen from space, vironments available in the past and, possibly, present can be implied from the observations of low-albedo fea- time is presented in x3 which will be correlated with the tures, like seas and oceans, fluvial features on its sur- current understanding of the evolution of Martian hy- face, atmospheric phenomena, polar ice caps, and the drosphere at x4. Alternative (dry) interpretations of the snow cover exhibiting seasonal variations, not to mention evidence are discussed in x5. spectroscopy. -
VV D C-A- R 78-03 National Space Science Data Center/ World Data Center a for Rockets and Satellites
VV D C-A- R 78-03 National Space Science Data Center/ World Data Center A For Rockets and Satellites {NASA-TM-79399) LHNAS TRANSI]_INT PHENOMENA N78-301 _7 CATAI_CG (NASA) 109 p HC AO6/MF A01 CSCl 22_ Unc.las G3 5 29842 NSSDC/WDC-A-R&S 78-03 Lunar Transient Phenomena Catalog Winifred Sawtell Cameron July 1978 National Space Science Data Center (NSSDC)/ World Data Center A for Rockets and Satellites (WDC-A-R&S) National Aeronautics and Space Administration Goddard Space Flight Center Greenbelt) Maryland 20771 CONTENTS Page INTRODUCTION ................................................... 1 SOURCES AND REFERENCES ......................................... 7 APPENDIX REFERENCES ............................................ 9 LUNAR TRANSIENT PHENOMENA .. .................................... 21 iii INTRODUCTION This catalog, which has been in preparation for publishing for many years is being offered as a preliminary one. It was intended to be automated and printed out but this form was going to be delayed for a year or more so the catalog part has been typed instead. Lunar transient phenomena have been observed for almost 1 1/2 millenia, both by the naked eye and telescopic aid. The author has been collecting these reports from the literature and personal communications for the past 17 years. It has resulted in a listing of 1468 reports representing only slight searching of the literature and probably only a fraction of the number of anomalies actually seen. The phenomena are unusual instances of temporary changes seen by observers that they reported in journals, books, and other literature. Therefore, although it seems we may be able to suggest possible aberrations as the causes of some or many of the phenomena it is presumptuous of us to think that these observers, long time students of the moon, were not aware of most of them. -
Seasonal Dynamics and Phylogenetic Diversity of Free-Living and Particle-Associated Bacterial Communities in Four Lakes in Northeastern Germany
AQUATIC MICROBIAL ECOLOGY Vol. 45: 115–128, 2006 Published November 24 Aquat Microb Ecol Seasonal dynamics and phylogenetic diversity of free-living and particle-associated bacterial communities in four lakes in northeastern Germany Martin Allgaier, Hans-Peter Grossart* Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Department of Limnology of Stratified Lakes, Alte Fischerhütte 2, 16775 Stechlin-Neuglobsow, Germany ABSTRACT: The phylogenetic diversity and seasonal dynamics of free-living and particle-associated bacterial communities were investigated in the epilimnion of 4 lakes of the Mecklenburg Lake Dis- trict, northeastern Germany. All lakes differed in their limnological features, ranging from olig- otrophic to eutrophic and dystrophic. Bacterial community structure and seasonal dynamics were analyzed by denaturing gradient gel electrophoresis (DGGE) and clone libraries of 16S rRNA gene fragments. Communities of free-living and particle-associated bacteria greatly differed among the lakes. In addition, significant differences occurred between both bacterial fractions within each lake. Seasonal changes were more pronounced in free-living than in particle-associated bacterial commu- nities. Non-metric multidimensional scaling (NMDS) analyses revealed several strong correlations between bacterial communities (both free-living and particle-associated) and environmental vari- ables such as pH, dissolved organic carbon (DOC), phytoplankton biomasses, and primary produc- tion. Phylogenetically, all cloned and sequenced 16S rRNA gene fragments belonged to already known freshwater clusters. Clone libraries of free-living bacteria were dominated by sequences of Actinobacteria, Bacteroidetes, and Betaproteobacteria, whereas those of particle-associated bacteria predominantly consisted of Cyanobacteria and Bacteroidetes sequences. Other freshwater phyla such as Alpha- and Gammaproteobacteria, Verrucomicrobia, Planctomycetes, and members of Can- didate Division OP10 were found in low proportions. -
Journal of the Association of Lunar & Planetary Observers
ISSN-0039-2502 Journal of the Association of Lunar & Planetary Observers The Strolling Astronomer Volume 45, Number 1, Winter 2003 Now in Portable Document Format (PDF) for MacIntosh and PC-Compatible Computers Inside...Inside...Inside... More on lunar domes While not the subject of this month’s dome study, we present here a view of lunar dome Mons Gruithuisen Delta (named for Franz von Paul Gruithuisen, a German physician-turned- astronomer) taken from an orbiting Apollo spacecraft. See page 12 for details. • Also . * An ALPO project team to study Saturn’s rings * Isophotes of the Sun * Getting ready for the upcoming Mercury/Venus transits * Getting ready for the Mars apparition * Jupiter and Saturn apparition reports Cover Graphic: John Sanford . plus reports about your ALPO section activities and much, much more. THE ASSOCIATION OF LUNAR AND PLANETARY OBSERVERS (ALPO) P.O. Box 13456, Springfield, Illinois 62791-3456 U.S.A. Thank you for your interest in our organization. The Association of Lunar and Planetary Observers (ALPO) was founded by Walter H. Haas in 1947, and incorporated in 1990, as a medium for advancing and conducting astronomical work by both profes- sional and amateur astronomers who share an interest in Solar System observations. We welcome and provide services for all indi- viduals interested in lunar and planetary astronomy. For the novice observer, the ALPO is a place to learn and to enhance observational techniques. For the advanced amateur astronomer, it is a place where one's work will count. For the professional astronomer, it is a resource where group studies or systematic observing patrols add to the advancement of astronomy. -
Long-Term Trends in Lake-Wide Phytoplankton Productivity in the Upper Great Lakes: 1998-2013
Michigan Technological University Digital Commons @ Michigan Tech Michigan Tech Research Institute Publications Michigan Tech Research Institute 2015 Long-term trends in lake-wide phytoplankton productivity in the Upper Great Lakes: 1998-2013 Gary L. Fahnenstiel Michigan Technological University Michael J. Sayers Michigan Technological University Robert A. Shuchman Michigan Technological University S. A. Pothoven NOAA GLERL Foad Yousef Michigan Technological University Follow this and additional works at: https://digitalcommons.mtu.edu/mtri_p Part of the Physical Sciences and Mathematics Commons Recommended Citation Fahnenstiel, G. L., Sayers, M. J., Shuchman, R. A., Pothoven, S. A., & Yousef, F. (2015). Long-term trends in lake-wide phytoplankton productivity in the Upper Great Lakes: 1998-2013. IAGLR 58th Annual Conference on Great Lakes Research. Retrieved from: https://digitalcommons.mtu.edu/mtri_p/72 Follow this and additional works at: https://digitalcommons.mtu.edu/mtri_p Part of the Physical Sciences and Mathematics Commons ABSTRACTS International Association for Great Lakes Research ABSTRACTS 58th Annual Conference on Great Lakes Research May 25–29, 2015 University of Vermont © 2015 International Association for Great Lakes Research 4890 South State Road Ann Arbor, Michigan 48108 Cover design and conference logo by Jenifer Thomas CONTENTS ABSTRACTS .......................................................................................................... 1 A ....................................................................................................................... -
NASA Goddard Space Flight Center, Greenbelt, MD Contact: [email protected]
Updated Catalogs of Peak-Ring Basins and Protobasins on Mars David M.H. Baker; NASA Goddard Space Flight Center, Greenbelt, MD Contact: [email protected] A catalog of craters ≥1 km on Mars from Robbins et al. [2] was used to survey all craters >50 km on the planet (N=2,070) in a manner similar to [5,6] for the Moon and Mercury. Motivation: II. Basin Images Datasets used included MOLA gridded topography and a global THEMIS daytime IR mosaic [7]. During the survey, each crater was identified as having a rim crest in addition to a single interior ring of peaks (peak-ring basin), an interior ring of peaks plus a central peak (protobasin), a central peak only (complex crater), or no interior structure (unclassified). • The morphology of peak-ring basins (exhibiting a rim crest and interior peak Schiaparelli; 446 km Schroeter; 292 km Galle; 223 km Kepler; 222 km Secchi; 217 km Kaiser; 202 km Lowell; 199 km Phillips; 185 km ring) in the complex crater to basin transition on the Moon and Mercury have been well characterized based on data from recent missions to these planetary bodies [e.g., 1]. • Although global crater catalogs have recently been produced for Mars [e.g., 2], the detailed characteristics of the crater to basin transition on Mars has not been fully re-examined since basin ring catalogs and measurements were produced over two decades ago by Pike and Spudis [3], among others. • Here, previous basin catalogs [3] and the global crater catalog of Robbins Unnamed; 180 km Molesworth; 175 km Proctor; 167 km Becquerel; 165 km Ptolemaeus; 165 km Dejnev 152 km Unnamed; 103 km Mie; 101 km et al. -
Ebook < Impact Craters on Mars # Download
7QJ1F2HIVR # Impact craters on Mars « Doc Impact craters on Mars By - Reference Series Books LLC Mrz 2012, 2012. Taschenbuch. Book Condition: Neu. 254x192x10 mm. This item is printed on demand - Print on Demand Neuware - Source: Wikipedia. Pages: 50. Chapters: List of craters on Mars: A-L, List of craters on Mars: M-Z, Ross Crater, Hellas Planitia, Victoria, Endurance, Eberswalde, Eagle, Endeavour, Gusev, Mariner, Hale, Tooting, Zunil, Yuty, Miyamoto, Holden, Oudemans, Lyot, Becquerel, Aram Chaos, Nicholson, Columbus, Henry, Erebus, Schiaparelli, Jezero, Bonneville, Gale, Rampart crater, Ptolemaeus, Nereus, Zumba, Huygens, Moreux, Galle, Antoniadi, Vostok, Wislicenus, Penticton, Russell, Tikhonravov, Newton, Dinorwic, Airy-0, Mojave, Virrat, Vernal, Koga, Secchi, Pedestal crater, Beagle, List of catenae on Mars, Santa Maria, Denning, Caxias, Sripur, Llanesco, Tugaske, Heimdal, Nhill, Beer, Brashear Crater, Cassini, Mädler, Terby, Vishniac, Asimov, Emma Dean, Iazu, Lomonosov, Fram, Lowell, Ritchey, Dawes, Atlantis basin, Bouguer Crater, Hutton, Reuyl, Porter, Molesworth, Cerulli, Heinlein, Lockyer, Kepler, Kunowsky, Milankovic, Korolev, Canso, Herschel, Escalante, Proctor, Davies, Boeddicker, Flaugergues, Persbo, Crivitz, Saheki, Crommlin, Sibu, Bernard, Gold, Kinkora, Trouvelot, Orson Welles, Dromore, Philips, Tractus Catena, Lod, Bok, Stokes, Pickering, Eddie, Curie, Bonestell, Hartwig, Schaeberle, Bond, Pettit, Fesenkov, Púnsk, Dejnev, Maunder, Mohawk, Green, Tycho Brahe, Arandas, Pangboche, Arago, Semeykin, Pasteur, Rabe, Sagan, Thira, Gilbert, Arkhangelsky, Burroughs, Kaiser, Spallanzani, Galdakao, Baltisk, Bacolor, Timbuktu,... READ ONLINE [ 7.66 MB ] Reviews If you need to adding benefit, a must buy book. Better then never, though i am quite late in start reading this one. I discovered this publication from my i and dad advised this pdf to find out. -- Mrs. Glenda Rodriguez A brand new e-book with a new viewpoint. -
A New Martian Radiative Transfer Model: Applications Using in Situ Measurements
UNIVERSIDAD COMPLUTENSE DE MADRID FACULTAD DE CIENCIAS FÍSICAS Departamento de Física de la Tierra, Astronomía y Astrofísica II TESIS DOCTORAL A new martian radiative transfer model: applications using in situ measurements Un nuevo modelo de transferencia radiativa en Marte: aplicaciones utilizando medidas in situ MEMORIA PARA OPTAR AL GRADO DE DOCTOR PRESENTADA POR Álvaro Vicente-Retortillo Rubalcaba Directores Francisco Valero Rodríguez Luis Vázquez Martínez Germán Martínez Martínez Madrid, 2017 © Álvaro Vicente-Retortillo Rubalcaba, 2017 UNIVERSIDAD COMPLUTENSE DE MADRID FACULTAD DE CIENCIAS FÍSICAS Departamento de Física de la Tierra, Astronomía y Astrofísica II TESIS DOCTORAL A NEW MARTIAN RADIATIVE TRANSFER MODEL: APPLICATIONS USING IN SITU MEASUREMENTS UN NUEVO MODELO DE TRANSFERENCIA RADIATIVA EN MARTE: APLICACIONES UTILIZANDO MEDIDAS IN SITU Memoria para optar al grado de doctor con Mención Internacional Presentada por: Álvaro de Vicente-Retortillo Rubalcaba Directores de tesis: Prof. Francisco Valero Rodríguez1 Prof. Luis Vázquez Martínez1 Dr. Germán Martínez Martínez2 1Universidad Complutense de Madrid 2University of Michigan Madrid, 2017 ii A NEW MARTIAN RADIATIVE TRANSFER MODEL: APPLICATIONS USING IN SITU MEASUREMENTS UN NUEVO MODELO DE TRANSFERENCIA RADIATIVA EN MARTE: APLICACIONES UTILIZANDO MEDIDAS IN SITU PhD. Thesis Author: Álvaro de Vicente-Retortillo Rubalcaba Advisors: Prof. Francisco Valero Rodríguez1 Prof. Luis Vázquez Martínez1 Dr. Germán Martínez Martínez2 1Universidad Complutense de Madrid 2University of Michigan Madrid, 2017 iii iv La presente Tesis Doctoral se ha realizado gracias a la concesión por parte del Ministerio de Economía y Competitividad (MINECO) de la ayuda predoctoral de Formación de Personal Investigador (FPI) con referencia BES-2012-059241, asociada al proyecto “Participación Científica en la Misión a Marte MEIGA-METNET-PRECURSOR” (AYA2011-29967-C05-02).