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Lunar Impact Crater Identification and Age Estimation with Chang’E
ARTICLE https://doi.org/10.1038/s41467-020-20215-y OPEN Lunar impact crater identification and age estimation with Chang’E data by deep and transfer learning ✉ Chen Yang 1,2 , Haishi Zhao 3, Lorenzo Bruzzone4, Jon Atli Benediktsson 5, Yanchun Liang3, Bin Liu 2, ✉ ✉ Xingguo Zeng 2, Renchu Guan 3 , Chunlai Li 2 & Ziyuan Ouyang1,2 1234567890():,; Impact craters, which can be considered the lunar equivalent of fossils, are the most dominant lunar surface features and record the history of the Solar System. We address the problem of automatic crater detection and age estimation. From initially small numbers of recognized craters and dated craters, i.e., 7895 and 1411, respectively, we progressively identify new craters and estimate their ages with Chang’E data and stratigraphic information by transfer learning using deep neural networks. This results in the identification of 109,956 new craters, which is more than a dozen times greater than the initial number of recognized craters. The formation systems of 18,996 newly detected craters larger than 8 km are esti- mated. Here, a new lunar crater database for the mid- and low-latitude regions of the Moon is derived and distributed to the planetary community together with the related data analysis. 1 College of Earth Sciences, Jilin University, 130061 Changchun, China. 2 Key Laboratory of Lunar and Deep Space Exploration, National Astronomical Observatories, Chinese Academy of Sciences, 100101 Beijing, China. 3 Key Laboratory of Symbol Computation and Knowledge Engineering of Ministry of Education, College of Computer Science and Technology, Jilin University, 130012 Changchun, China. 4 Department of Information Engineering and Computer ✉ Science, University of Trento, I-38122 Trento, Italy. -
Sabbatical Leave Report 2019 – 2020
Sabbatical Leave Report 2019 – 2020 James MacDevitt, M.A. Associate Professor of Art History and Visual & Cultural Studies Director, Cerritos College Art Gallery Department of Art and Design Fine Arts and Communications Division Cerritos College January 2021 Table of Contents Title Page i Table of Contents ii Sabbatical Leave Application iii Statement of Purpose 35 Objectives and Outcomes 36 OER Textbook: Disciplinary Entanglements 36 Getty PST Art x Science x LA Research Grant Application 37 Conference Presentation: Just Futures 38 Academic Publication: Algorithmic Culture 38 Service and Practical Application 39 Concluding Statement 40 Appendix List (A-E) 41 A. Disciplinary Entanglements | Table of Contents 42 B. Disciplinary Entanglements | Screenshots 70 C. Getty PST Art x Science x LA | Research Grant Application 78 D. Algorithmic Culture | Book and Chapter Details 101 E. Just Futures | Conference and Presentation Details 103 2 SABBATICAL LEAVE APPLICATION TO: Dr. Rick Miranda, Jr., Vice President of Academic Affairs FROM: James MacDevitt, Associate Professor of Visual & Cultural Studies DATE: October 30, 2018 SUBJECT: Request for Sabbatical Leave for the 2019-20 School Year I. REQUEST FOR SABBATICAL LEAVE. I am requesting a 100% sabbatical leave for the 2019-2020 academic year. Employed as a fulltime faculty member at Cerritos College since August 2005, I have never requested sabbatical leave during the past thirteen years of service. II. PURPOSE OF LEAVE Scientific advancements and technological capabilities, most notably within the last few decades, have evolved at ever-accelerating rates. Artists, like everyone else, now live in a contemporary world completely restructured by recent phenomena such as satellite imagery, augmented reality, digital surveillance, mass extinctions, artificial intelligence, prosthetic limbs, climate change, big data, genetic modification, drone warfare, biometrics, computer viruses, and social media (and that’s by no means meant to be an all-inclusive list). -
No. 40. the System of Lunar Craters, Quadrant Ii Alice P
NO. 40. THE SYSTEM OF LUNAR CRATERS, QUADRANT II by D. W. G. ARTHUR, ALICE P. AGNIERAY, RUTH A. HORVATH ,tl l C.A. WOOD AND C. R. CHAPMAN \_9 (_ /_) March 14, 1964 ABSTRACT The designation, diameter, position, central-peak information, and state of completeness arc listed for each discernible crater in the second lunar quadrant with a diameter exceeding 3.5 km. The catalog contains more than 2,000 items and is illustrated by a map in 11 sections. his Communication is the second part of The However, since we also have suppressed many Greek System of Lunar Craters, which is a catalog in letters used by these authorities, there was need for four parts of all craters recognizable with reasonable some care in the incorporation of new letters to certainty on photographs and having diameters avoid confusion. Accordingly, the Greek letters greater than 3.5 kilometers. Thus it is a continua- added by us are always different from those that tion of Comm. LPL No. 30 of September 1963. The have been suppressed. Observers who wish may use format is the same except for some minor changes the omitted symbols of Blagg and Miiller without to improve clarity and legibility. The information in fear of ambiguity. the text of Comm. LPL No. 30 therefore applies to The photographic coverage of the second quad- this Communication also. rant is by no means uniform in quality, and certain Some of the minor changes mentioned above phases are not well represented. Thus for small cra- have been introduced because of the particular ters in certain longitudes there are no good determi- nature of the second lunar quadrant, most of which nations of the diameters, and our values are little is covered by the dark areas Mare Imbrium and better than rough estimates. -
Exceptionally Well-Preserved Fossils in a Middle Ordovician Impact Crater
Downloaded from http://jgs.lyellcollection.org/ by guest on September 29, 2021 Review focus Journal of the Geological Society Published Online First https://doi.org/10.1144/jgs2018-101 The Winneshiek biota: exceptionally well-preserved fossils in a Middle Ordovician impact crater Derek E.G. Briggs1,2*, Huaibao P. Liu3, Robert M. McKay3 & Brian J. Witzke4 1 Department of Geology and Geophysics, Yale University, New Haven, CT 06520, USA 2 Yale Peabody Museum of Natural History, Yale University, New Haven, CT 06520, USA 3 Iowa Geological Survey, IIHR – Hydroscience & Engineering, University of Iowa, 340 Trowbridge Hall, Iowa City, IA 52242, USA 4 Department of Earth and Environmental Sciences, University of Iowa, 115 Trowbridge Hall, Iowa City, IA 52242, USA D.E.G.B., 0000-0003-0649-6417 * Correspondence: [email protected] Abstract: The Winneshiek Shale (Middle Ordovician, Darriwilian) was deposited in a meteorite crater, the Decorah impact structure, in NE Iowa. This crater is 5.6 km in diameter and penetrates Cambrian and Ordovician cratonic strata. It was probably situated close to land in an embayment connected to the epicontinental sea; typical shelly marine taxa are absent. The Konservat-Lagerstätte within the Winneshiek Shale is important because it represents an interval when exceptional preservation is rare. The biota includes the earliest eurypterid, a giant form, as well as a new basal chelicerate and the earliest ceratiocarid phyllocarid. Conodonts, some of giant size, occur as bedding plane assemblages. Bromalites and rarer elements, including a linguloid brachiopod and a probable jawless fish, are also present. Similar fossils occur in the coeval Ames impact structure in Oklahoma, demonstrating that meteorite craters represent a novel and under-recognized setting for Konservat- Lagerstätten. -
Magyar Királyi Földtani Intézet (2006.)
' Copyright Magyar `llami Fldtani IntØzet (Geological Institute of Hungary), 2005 Minden jog fenntartva! All rights reserved! Lektorok Reviewers: BALLA ZOLTÁN, CSÁSZÁRGZA, HAAS JÁNOS, HORVÁTH ISTVÁN, JÁMBOR Á RON, KOVÁCS SÁNDOR, KUBOVICS IMRE, LESS GYRGY, LIEBE PÁL,VICZIÁN ISTVÁN Sorozatszerkesztı Serial editor: BALLA ZOLTÁN Szakszerkesztı Scientific editor: PIROS OLGA Mßszaki szerkesztı Technical editor: SIMONYI DEZS SzÆmtgØpes nyomdai elıkØsztØs DTP: PIROS OLGA, SIMONYI DEZS Bortterv Cover design: SIMONYI DEZS Kiadja a Magyar `llami Fldtani IntØzet Published by the Geological Institute of Hungary Felelıs kiad Responsible editor: KORDOS L`SZL Igazgat Director HU ISSN 03689751 3 Tartalom — Contents Működési jelentés — Activity Report HÁMOR GÉZA (1934–2007) . 7 JÁMBOR ÁRON (összeállító): Dr. Hámor Géza szakirodalmi munkássága . 8 KORDOS LÁSZLÓ: A múlt a jövő kulcsa . 17 BREZSNYÁNSZKY KÁROLY: Igazgatói beszámoló a Magyar Állami Földtani Intézet 2006. évi tevékenységéről . 19 Szakcikkek — Scientific publications RIPSZNÉ JUDIK KATALIN: A Medvednica hegység (Horvátország) és Észak-Magyarország paleozoos és mezozoos kishőmérsékletű metamorf képződményeinek összevetése. — Comparison of Palaeozoic and Mesozoic very low- grade metamorphic formations in the Medvednica Mts (Croatia) and in North Hungary. 47 PELIKÁN PÁL, IVAN FILIPOVIĆ, DIVNA JOVANOVIĆ, MILAN SUDAR, †LJUBINKO PROTIĆ, HIPS KINGA, KOVÁCS SÁNDOR, LESS GYÖRGY: A Bükki-terrénum (É-Magyarország), a Jadari-terrénum (ÉNy-Szerbia) és a Sana-Unai-terrénum (ÉNy-Bosznia) karbon, perm és triász rétegsorainak összehasonlítása. — Correlation of the Carboniferous, Permian and Triassic sequences of the Bükk, Jadar, Sana-Una terrains. 59 BUDAI TAMÁS: Platformok és medencék kialakulása és fejlődése a Bakony középső-triász története során. — Middle Triassic platform and basin evolution of the Bakony Mts, Hungary. 77 HAAS JÁNOS: A bükki és a darnói jura képződmények ősföldrajzi helyzete és kapcsolatai. -
Year XIX, Supplement Ethnographic Study And/Or a Theoretical Survey of a Their Position in the Article Should Be Clearly Indicated
III. TITLES OF ARTICLES DRU[TVO ANTROPOLOGOV SLOVENIJE The journal of the Slovene Anthropological Society Titles (in English and Slovene) must be short, informa- SLOVENE ANTHROPOLOGICAL SOCIETY Anthropological Notebooks welcomes the submis- tive, and understandable. The title should be followed sion of papers from the field of anthropology and by the name of the author(s), their position, institutional related disciplines. Submissions are considered for affiliation, and if possible, by e-mail address. publication on the understanding that the paper is not currently under consideration for publication IV. ABSTRACT AND KEYWORDS elsewhere. It is the responsibility of the author to The abstract must give concise information about the obtain permission for using any previously published objective, the method used, the results obtained, and material. Please submit your manuscript as an e-mail the conclusions. Authors are asked to enclose in English attachment on [email protected] and enclose your contact information: name, position, and Slovene an abstract of 100 – 200 words followed institutional affiliation, address, phone number, and by three to five keywords. They must reflect the field of e-mail address. research covered in the article. English abstract should be placed at the beginning of an article and the Slovene one after the references at the end. V. NOTES A N T H R O P O L O G I C A L INSTRUCTIONS Notes should also be double-spaced and used sparingly. They must be numbered consecutively throughout the text and assembled at the end of the article just before references. VI. QUOTATIONS Short quotations (less than 30 words) should be placed in single quotation marks with double marks for quotations within quotations. -
Science Concept 5: Lunar Volcanism Provides a Window Into the Thermal and Compositional Evolution of the Moon
Science Concept 5: Lunar Volcanism Provides a Window into the Thermal and Compositional Evolution of the Moon Science Concept 5: Lunar volcanism provides a window into the thermal and compositional evolution of the Moon Science Goals: a. Determine the origin and variability of lunar basalts. b. Determine the age of the youngest and oldest mare basalts. c. Determine the compositional range and extent of lunar pyroclastic deposits. d. Determine the flux of lunar volcanism and its evolution through space and time. INTRODUCTION Features of Lunar Volcanism The most prominent volcanic features on the lunar surface are the low albedo mare regions, which cover approximately 17% of the lunar surface (Fig. 5.1). Mare regions are generally considered to be made up of flood basalts, which are the product of highly voluminous basaltic volcanism. On the Moon, such flood basalts typically fill topographically-low impact basins up to 2000 m below the global mean elevation (Wilhelms, 1987). The mare regions are asymmetrically distributed on the lunar surface and cover about 33% of the nearside and only ~3% of the far-side (Wilhelms, 1987). Other volcanic surface features include pyroclastic deposits, domes, and rilles. These features occur on a much smaller scale than the mare flood basalts, but are no less important in understanding lunar volcanism and the internal evolution of the Moon. Table 5.1 outlines different types of volcanic features and their interpreted formational processes. TABLE 5.1 Lunar Volcanic Features Volcanic Feature Interpreted Process -
10Great Features for Moon Watchers
Sinus Aestuum is a lava pond hemming the Imbrium debris. Mare Orientale is another of the Moon’s large impact basins, Beginning observing On its eastern edge, dark volcanic material erupted explosively and possibly the youngest. Lunar scientists think it formed 170 along a rille. Although this region at first appears featureless, million years after Mare Imbrium. And although “Mare Orien- observe it at several different lunar phases and you’ll see the tale” translates to “Eastern Sea,” in 1961, the International dark area grow more apparent as the Sun climbs higher. Astronomical Union changed the way astronomers denote great features for Occupying a region below and a bit left of the Moon’s dead lunar directions. The result is that Mare Orientale now sits on center, Mare Nubium lies far from many lunar showpiece sites. the Moon’s western limb. From Earth we never see most of it. Look for it as the dark region above magnificent Tycho Crater. When you observe the Cauchy Domes, you’ll be looking at Yet this small region, where lava plains meet highlands, con- shield volcanoes that erupted from lunar vents. The lava cooled Moon watchers tains a variety of interesting geologic features — impact craters, slowly, so it had a chance to spread and form gentle slopes. 10Our natural satellite offers plenty of targets you can spot through any size telescope. lava-flooded plains, tectonic faulting, and debris from distant In a geologic sense, our Moon is now quiet. The only events by Michael E. Bakich impacts — that are great for telescopic exploring. -
Cretaceous - Tertiary Mass Extinction Meteoritic Versus Volcanic Causes
GENERAL I ARTICLE Cretaceous - Tertiary Mass Extinction Meteoritic Versus Volcanic Causes P V Sukumaran The bolide impact theory for mass extinctions at the Cretaceous-tertiary (K-T) boundary was a revolutionary concept. This theory was contested by short duration global volcanism as a possible alternative cause for the K-T extinction. Though there is a converging evidence for an extra-terrestrial impact coinciding with the P V Sukumaran took his terminal Cretaceous, the causative link between the M Tech degree in impact and the K-T mass extinction is debatable. Thus, Applied Geology from the while the impact theory is re-emerging, available evidence University of Saugar and has been with the is still insufficient to rule out either of the two hypotheses. Geological Survey of India since 1974. His interests Introduction include geochemistry, petrology and palae oceanography. He is It is now widely believed that life on earth began very early in presently posted to the its geological history, probably about 4000 My (million years) Marine Wing of the ago (Mojzsis and others, 1996). Since then it underwent Department and has participated in many several evolutionary branchings to the complex diversity as scientific cruises both as we see today. Nevertheless, it was not a smooth voyage for life Chief Scientist and as a all along, the evolution was punctuated by geologically participating scientist. ins tan taneous events of mass mortality. New species emerged at the expense of their predecessors following each extinction event and life went on evolving ever more vibrantly. In the geologic record of rock strata, such mass extinction events are identifiable based on sudden absence and reduction in diversity of fossil assemblage across stratigraphic boundaries. -
March 21–25, 2016
FORTY-SEVENTH LUNAR AND PLANETARY SCIENCE CONFERENCE PROGRAM OF TECHNICAL SESSIONS MARCH 21–25, 2016 The Woodlands Waterway Marriott Hotel and Convention Center The Woodlands, Texas INSTITUTIONAL SUPPORT Universities Space Research Association Lunar and Planetary Institute National Aeronautics and Space Administration CONFERENCE CO-CHAIRS Stephen Mackwell, Lunar and Planetary Institute Eileen Stansbery, NASA Johnson Space Center PROGRAM COMMITTEE CHAIRS David Draper, NASA Johnson Space Center Walter Kiefer, Lunar and Planetary Institute PROGRAM COMMITTEE P. Doug Archer, NASA Johnson Space Center Nicolas LeCorvec, Lunar and Planetary Institute Katherine Bermingham, University of Maryland Yo Matsubara, Smithsonian Institute Janice Bishop, SETI and NASA Ames Research Center Francis McCubbin, NASA Johnson Space Center Jeremy Boyce, University of California, Los Angeles Andrew Needham, Carnegie Institution of Washington Lisa Danielson, NASA Johnson Space Center Lan-Anh Nguyen, NASA Johnson Space Center Deepak Dhingra, University of Idaho Paul Niles, NASA Johnson Space Center Stephen Elardo, Carnegie Institution of Washington Dorothy Oehler, NASA Johnson Space Center Marc Fries, NASA Johnson Space Center D. Alex Patthoff, Jet Propulsion Laboratory Cyrena Goodrich, Lunar and Planetary Institute Elizabeth Rampe, Aerodyne Industries, Jacobs JETS at John Gruener, NASA Johnson Space Center NASA Johnson Space Center Justin Hagerty, U.S. Geological Survey Carol Raymond, Jet Propulsion Laboratory Lindsay Hays, Jet Propulsion Laboratory Paul Schenk, -
Secondary Craters on Europa and Implications for Cratered Surfaces
Vol 437|20 October 2005|doi:10.1038/nature04069 LETTERS Secondary craters on Europa and implications for cratered surfaces Edward B. Bierhaus1, Clark R. Chapman2 & William J. Merline2 For several decades, most planetary researchers have regarded the craters were typically not spatially random, but instead appeared in impact crater populations on solid-surfaced planets and smaller clumps and clusters16 even at distances far (several hundred kilo- bodies as predominantly reflecting the direct (‘primary’) impacts metres) from the nearest large primary crater. This clustered spatial of asteroids and comets1. Estimates of the relative and absolute distribution contrasts with primary impacts, which are spatially ages of geological units on these objects have been based on this random. The low spatial density and unusual non-random spatial assumption2. Here we present an analysis of the comparatively distribution of Europa’s small craters enabled us to achieve what has sparse crater population on Jupiter’s icy moon Europa and suggest been previously difficult, namely unambiguous identification and that this assumption is incorrect for small craters. We find that quantification of the contribution of distant secondary craters to the ‘secondaries’ (craters formed by material ejected from large total crater SFD. This, in turn, allows us to re-examine the overall primary impact craters) comprise about 95 per cent of the small crater age-dating methodology. We discuss the specifics of the craters (diameters less than 1 km) on Europa. We therefore con- Europa data first. clude that large primary impacts into a solid surface (for example, We measured more than 17,000 craters in 87 low-compression, ice or rock) produce far more secondaries than previously low-sun, high-resolution Europa images (scales ,60 m pixel21), believed, implying that the small crater populations on the which cover nine regions totalling 0.2% of Europa’s surface (a much Moon, Mars and other large bodies must be dominated by larger percentage of Europa has been imaged at lower resolutions), secondaries. -
Branches Vol 22
Branches volume wen y- wo Caldwell Community College and Technical Institute 2855 Hickory Boulevard Hudson, North Carolina 28638 828.726.2200 • 828.297.3811 www.cccti.edu CCC TI is an equal opportunity educator employer Cindy Meissner Untitled Relief Print Acknowledgements Art Editors Laura Aultman Justin Butler Thomas Thielemann Literary Editors Heather Barnett Jessica Chapman DeAnna Chester Brad Prestwood Production Director Ron Wilson Special Thanks: Alison Beard Ron Holste Martin Moore Edward Terry Linda Watts Funding and other support for Branches was provided by the CCC&TI Foundation, the College Transfer Division and the Department of Fine Arts, umanities, Social Sciences, and Physical Education. To view previous editions of Branches or to find out more information about submitting works of art or literature to the 23rd edition of Branches, please visit our website at www.cccti.edu/branches. Table of Contents Factory Reflection ......................................Scott Garnes ................................Frontispiece Sunday Afternoon with Flamenco ..............KJ Maj ..........................................................1 Woman on the Liffey Bridge........................Peter Morris ..................................................3 Void ............................................................Katie Webb....................................................4 Yellow ospital Garments ..........................Mattea Richardson ........................................5 Canned Peaches in Winter ..........................Amy