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A New Model of the Crustal Magnetic Field of Mars Using MGS and MAVEN
RESEARCH ARTICLE A New Model of the Crustal Magnetic Field of Mars Using 10.1029/2018JE005854 MGS and MAVEN Key Points: 1 1 2 3 • MGS and MAVEN magnetic field Benoit Langlais , Erwan Thébault , Aymeric Houliez , Michael E. Purucker , 4 measurements are combined into a and Robert J. Lillis high-resolution magnetic field model • The new model extends up to SH 1Laboratoire de Planétologie et Géodynamique, Université de Nantes, Université d'Angers, CNRS, UMR 6112, Nantes, degree 134, corresponding to 160-km France, 2Observatoire Royal de Belgique, Uccle, Belgium, 3Planetary Magnetospheres Laboratory, NASA Goddard horizontal resolution at the Martian Space Flight Center, Greenbelt, MD, USA, 4Space Science Laboratory, University of California, Berkeley, CA, USA surface • It enables local studies, where geologic and magnetic features can be compared Abstract While devoid of an active magnetic dynamo field today, Mars possesses a remanent magnetic field that may reach several thousand nanoteslas locally. The exact origin and the events that have shaped the crustal magnetization remain largely enigmatic. Three magnetic field data sets from two spacecraft Supporting Information: • Supporting Information S1 collected over 13 cumulative years have sampled the Martian magnetic field over a range of altitudes •TableS1 from 90 up to 6,000 km: (a) Mars Global Surveyor (MGS) magnetometer (1997–2006), (b) MGS Electron Reflectometer (1999–2006), and (c) Mars Atmosphere and Volatile EvolutioN (MAVEN) magnetometer Correspondence to: (2014 to today). In this paper we combine these complementary data sets for the first time to build a new B. Langlais, model of the Martian internal magnetic field. This new model improves upon previous ones in several [email protected] aspects: comprehensive data coverage, refined data selection scheme, modified modeling scheme, discrete-to-continuous transformation of the model, and increased model resolution. -
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, -
Impact Melt Emplacement on Mercury
Western University Scholarship@Western Electronic Thesis and Dissertation Repository 7-24-2018 2:00 PM Impact Melt Emplacement on Mercury Jeffrey Daniels The University of Western Ontario Supervisor Neish, Catherine D. The University of Western Ontario Graduate Program in Geology A thesis submitted in partial fulfillment of the equirr ements for the degree in Master of Science © Jeffrey Daniels 2018 Follow this and additional works at: https://ir.lib.uwo.ca/etd Part of the Geology Commons, Physical Processes Commons, and the The Sun and the Solar System Commons Recommended Citation Daniels, Jeffrey, "Impact Melt Emplacement on Mercury" (2018). Electronic Thesis and Dissertation Repository. 5657. https://ir.lib.uwo.ca/etd/5657 This Dissertation/Thesis is brought to you for free and open access by Scholarship@Western. It has been accepted for inclusion in Electronic Thesis and Dissertation Repository by an authorized administrator of Scholarship@Western. For more information, please contact [email protected]. Abstract Impact cratering is an abrupt, spectacular process that occurs on any world with a solid surface. On Earth, these craters are easily eroded or destroyed through endogenic processes. The Moon and Mercury, however, lack a significant atmosphere, meaning craters on these worlds remain intact longer, geologically. In this thesis, remote-sensing techniques were used to investigate impact melt emplacement about Mercury’s fresh, complex craters. For complex lunar craters, impact melt is preferentially ejected from the lowest rim elevation, implying topographic control. On Venus, impact melt is preferentially ejected downrange from the impact site, implying impactor-direction control. Mercury, despite its heavily-cratered surface, trends more like Venus than like the Moon. -
MIAMI UNIVERSITY the Graduate School Certificate for Approving The
MIAMI UNIVERSITY The Graduate School Certificate for Approving the Dissertation We hereby approve the Dissertation of Qiuyuan Huang Candidate for the Degree: Doctor of Philosophy _______________________________________ Hailiang Dong, Director ________________________________________ Yildirim Dilek, Reader ________________________________________ Jonathan Levy, Reader ______________________________________ Chuanlun Zhang, External examiner ______________________________________ Annette Bollmann, Graduate School Representative ABSTRACT GEOMICROBIAL INVESTIGATIONS ON EXTREME ENVIRONMENTS: LINKING GEOCHEMISTRY TO MICROBIAL ECOLOGY IN TERRESTRIAL HOT SPRINGS AND SALINE LAKES by Qiuyuan Huang Terrestrial hot springs and saline lakes represent two extreme environments for microbial life and constitute an important part of global ecosystems that affect the biogeochemical cycling of life-essential elements. Despite the advances in our understanding of microbial ecology in the past decade, important questions remain regarding the link between microbial diversity and geochemical factors under these extreme conditions. This dissertation first investigates a series of hot springs with wide ranges of temperature (26-92oC) and pH (3.72-8.2) from the Tibetan Plateau in China and the Philippines. Within each region, microbial diversity and geochemical conditions were studied using an integrated approach with 16S rRNA molecular phylogeny and a suite of geochemical analyses. In Tibetan springs, the microbial community was dominated by archaeal phylum Thaumarchaeota -
Byzantium and France: the Twelfth Century Renaissance and the Birth of the Medieval Romance
University of Tennessee, Knoxville TRACE: Tennessee Research and Creative Exchange Doctoral Dissertations Graduate School 12-1992 Byzantium and France: the Twelfth Century Renaissance and the Birth of the Medieval Romance Leon Stratikis University of Tennessee - Knoxville Follow this and additional works at: https://trace.tennessee.edu/utk_graddiss Part of the Modern Languages Commons Recommended Citation Stratikis, Leon, "Byzantium and France: the Twelfth Century Renaissance and the Birth of the Medieval Romance. " PhD diss., University of Tennessee, 1992. https://trace.tennessee.edu/utk_graddiss/2521 This Dissertation is brought to you for free and open access by the Graduate School at TRACE: Tennessee Research and Creative Exchange. It has been accepted for inclusion in Doctoral Dissertations by an authorized administrator of TRACE: Tennessee Research and Creative Exchange. For more information, please contact [email protected]. To the Graduate Council: I am submitting herewith a dissertation written by Leon Stratikis entitled "Byzantium and France: the Twelfth Century Renaissance and the Birth of the Medieval Romance." I have examined the final electronic copy of this dissertation for form and content and recommend that it be accepted in partial fulfillment of the equirr ements for the degree of Doctor of Philosophy, with a major in Modern Foreign Languages. Paul Barrette, Major Professor We have read this dissertation and recommend its acceptance: James E. Shelton, Patrick Brady, Bryant Creel, Thomas Heffernan Accepted for the Council: Carolyn R. Hodges Vice Provost and Dean of the Graduate School (Original signatures are on file with official studentecor r ds.) To the Graduate Council: I am submitting herewith a dissertation by Leon Stratikis entitled Byzantium and France: the Twelfth Century Renaissance and the Birth of the Medieval Romance. -
The Curtis L. Ivey Science Center DEDICATED SEPTEMBER 17, 2004
NON-PROFIT Office of Advancement ORGANIZATION ALUMNI MAGAZINE COLBY-SAWYER Colby-Sawyer College U.S. POSTAGE 541 Main Street PAID New London, NH 03257 LEWISTON, ME PERMIT 82 C LBY-SAWYER CHANGE SERVICE REQUESTED ALUMNI MAGAZINE I NSIDE: FALL/WINTER 2004 The Curtis L. Ivey Science Center DEDICATED SEPTEMBER 17, 2004 F ALL/WINTER 2004 Annual Report Issue EDITOR BOARD OF TRUSTEES David R. Morcom Anne Winton Black ’73, ’75 CLASS NOTES EDITORS Chair Tracey Austin Ye ar of Gaye LaCasce Philip H. Jordan Jr. Vice-Chair CONTRIBUTING WRITERS Tracey Austin Robin L. Mead ’72 the Arts Jeremiah Chila ’04 Executive Secretary Cathy DeShano Ye ar of Nicole Eaton ’06 William S. Berger Donald A. Hasseltine Pamela Stanley Bright ’61 Adam S. Kamras Alice W. Brown Gaye LaCasce Lo-Yi Chan his month marks the launch of the Year of the Arts, a David R. Morcom Timothy C. Coughlin P’00 Tmultifaceted initiative that will bring arts faculty members to meet Kimberly Swick Slover Peter D. Danforth P’83, ’84, GP’02 the Arts Leslie Wright Dow ’57 with groups of alumni and friends around the country. We will host VICE PRESIDENT FOR ADVANCEMENT Stephen W. Ensign gatherings in art museums and galleries in a variety of cities, and Donald A. Hasseltine Eleanor Morrison Goldthwait ’51 are looking forward to engaging hundreds of alumni and friends in Suzanne Simons Hammond ’66 conversations about art, which will be led by our faculty experts. DIRECTOR OF DEVELOPMENT Patricia Driggs Kelsey We also look forward to sharing information about Colby-Sawyer’s Beth Cahill Joyce Juskalian Kolligian ’55 robust arts curriculum. -
Volume 64, Number 04 (April 1946) James Francis Cooke
Gardner-Webb University Digital Commons @ Gardner-Webb University The tudeE Magazine: 1883-1957 John R. Dover Memorial Library 4-1-1946 Volume 64, Number 04 (April 1946) James Francis Cooke Follow this and additional works at: https://digitalcommons.gardner-webb.edu/etude Part of the Composition Commons, Music Pedagogy Commons, and the Music Performance Commons Recommended Citation Cooke, James Francis. "Volume 64, Number 04 (April 1946)." , (1946). https://digitalcommons.gardner-webb.edu/etude/196 This Book is brought to you for free and open access by the John R. Dover Memorial Library at Digital Commons @ Gardner-Webb University. It has been accepted for inclusion in The tudeE Magazine: 1883-1957 by an authorized administrator of Digital Commons @ Gardner-Webb University. For more information, please contact [email protected]. PIETRO MASCAGNI LAURITZ MELCHIOR, sensational Wag- nerian tenor of the Metropolitan Opera Company, recently celebrated his twen- tieth anniversary with the organization. To commemorate the occasion a gala concert was arranged, in which a num- ber of his colleagues joined Mr. Melchior in singing excerpts from three of the Wagner operas. Following the concert there was a back-stage ceremony, in which all departments of the Metropol- itan, from the board of directors to the stage hands, joined in paying tribute to the distinguished tenor. AN INTERNATIONAL music festival will take place in Prague, Czechoslovakia, from May 11 to 31, in commemoration of the fiftieth birthday of the Czech Phil- harmonic Orchestra. Leonard Bernstein, composer, conductor; Samuel Barber, composer; and Eugene List, pianist, will attend, representing the U.S. cured free upon request to the National THE RESTORED Co- and Inter-American Music Week Com- lonial city of Williams- BERNARD ROGERS’ mittee, 315 Fourth Avenue, New York 10. -
Abstract Volume
T I I II I II I I I rl I Abstract Volume LPI LPI Contribution No. 1097 II I II III I • • WORKSHOP ON MERCURY: SPACE ENVIRONMENT, SURFACE, AND INTERIOR The Field Museum Chicago, Illinois October 4-5, 2001 Conveners Mark Robinbson, Northwestern University G. Jeffrey Taylor, University of Hawai'i Sponsored by Lunar and Planetary Institute The Field Museum National Aeronautics and Space Administration Lunar and Planetary Institute 3600 Bay Area Boulevard Houston TX 77058-1113 LPI Contribution No. 1097 Compiled in 2001 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 volume may be cited as Author A. B. (2001)Title of abstract. In Workshop on Mercury: Space Environment, Surface, and Interior, p. xx. LPI Contribution No. 1097, Lunar and Planetary Institute, Houston. This report is distributed by ORDER DEPARTMENT Lunar and Planetary institute 3600 Bay Area Boulevard Houston TX 77058-1113, USA Phone: 281-486-2172 Fax: 281-486-2186 E-mail: order@lpi:usra.edu Please contact the Order Department for ordering information, i,-J_,.,,,-_r ,_,,,,.r pA<.><--.,// ,: Mercury Workshop 2001 iii / jaO/ Preface This volume contains abstracts that have been accepted for presentation at the Workshop on Mercury: Space Environment, Surface, and Interior, October 4-5, 2001. -
Powers of Horror; an Essay on Abjection
POWERS OF HORROR An Essay on Abjection EUROPEAN PERSPECTIVES: A Series of the Columbia University Press POWERS OF HORROR An Essay on Abjection JULIA KRISTEVA Translated by LEON S. ROUDIEZ COLUMBIA UNIVERSITY PRESS New York 1982 Library of Congress Cataloging in Publication Data Kristeva, Julia, 1941- Powers of horror. (European perspectives) Translation of: Pouvoirs de l'horreur. 1. Celine, Louis-Ferdinand, 1894-1961 — Criticism and interpretation. 2. Horror in literature. 3. Abjection in literature. I. Title. II. Series. PQ2607.E834Z73413 843'.912 82-4481 ISBN 0-231-05346-0 AACR2 Columbia University Press New York Guildford, Surrey Copyright © 1982 Columbia University Press Pouvoirs de l'horreur © 1980 Editions du Seuil AD rights reserved Printed in the United States of America Clothbound editions of Columbia University Press books are Smyth- sewn and printed on permanent and durable acid-free paper. Contents Translator's Note vii I. Approaching Abjection i 2. Something To Be Scared Of 32 3- From Filth to Defilement 56 4- Semiotics of Biblical Abomination 90 5- . Qui Tollis Peccata Mundi 113 6. Celine: Neither Actor nor Martyr • 133 7- Suffering and Horror 140 8. Those Females Who Can Wreck the Infinite 157 9- "Ours To Jew or Die" 174 12 In the Beginning and Without End . 188 11 Powers of Horror 207 Notes 211 Translator's Note When the original version of this book was published in France in 1980, critics sensed that it marked a turning point in Julia Kristeva's writing. Her concerns seemed less arcane, her presentation more appealingly worked out; as Guy Scarpetta put it in he Nouvel Observateur (May 19, 1980), she now intro- duced into "theoretical rigor an effective measure of seduction." Actually, no sudden change has taken place: the features that are noticeable in Powers of Horror were already in evidence in several earlier essays, some of which have been translated in Desire in Language (Columbia University Press, 1980). -
Morphology and Morphometry of Double Layered Ejecta Craters on Mars
Western University Scholarship@Western Electronic Thesis and Dissertation Repository August 2015 Morphology and Morphometry of Double Layered Ejecta Craters on Mars Ryan Schwegman The University of Western Ontario Supervisor Dr. Gordon Osinski The University of Western Ontario Joint Supervisor Dr. Livio Tornabene The University of Western Ontario Graduate Program in Geology A thesis submitted in partial fulfillment of the equirr ements for the degree in Master of Science © Ryan Schwegman 2015 Follow this and additional works at: https://ir.lib.uwo.ca/etd Part of the Geology Commons Recommended Citation Schwegman, Ryan, "Morphology and Morphometry of Double Layered Ejecta Craters on Mars" (2015). Electronic Thesis and Dissertation Repository. 3074. https://ir.lib.uwo.ca/etd/3074 This Dissertation/Thesis is brought to you for free and open access by Scholarship@Western. It has been accepted for inclusion in Electronic Thesis and Dissertation Repository by an authorized administrator of Scholarship@Western. For more information, please contact [email protected]. MORPHOLOGY AND MORPHOMETRY OF DOUBLE LAYERED EJECTA CRATERS ON MARS (Thesis format: Integrated Article) by Ryan Schwegman Graduate Program in Geology: Planetary Science A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science The School of Graduate and Postdoctoral Studies The University of Western Ontario London, Ontario, Canada © Ryan Schwegman 2015 Abstract Double layered ejecta (DLE) craters display two distinct layers of ejecta that appear to have been emplaced as a mobile, ground-hugging flow. While volatile content within the target, atmosphere, or some combination of the two is generally considered a major variable enhancing the mobility of ejecta, the presence of unconsolidated surface materials may also have some effect. -
Extensions of Remarks
24536 EXTENSIONS OF REMARKS September 6, 1984 EXTENSIONS OF REMARKS VETERAN ARTISTS "My father was an architect," he contin If it wasn't published, then there was no ued, "and at night, he would let us stay up chance for criticism. half an hour extra if we would draw ... and "For example, I was sent to interview sail HON. DAVID E. BONIOR be quiet. That was the time I developed my ors on Christmas Eve. Of course, all they OF MICHIGAN imagination with a pencil. Later I would wanted for Christmas was to go home. My IN THE HOUSE OF REPRESENTATIVES paint to relax before a football game. But it superiors decided not to release any of those Thursday, September 6, 1984 was of the idealized scene of streams, clouds interviews." and sky. I would transport myself to a con In his last posting to Saigon, Posner's e Mr. BONIOR of Michigan. Mr. trolled world. major work was writing solicitations for do Speaker, war strains the human spirit, But in Vietnam, that peace and control nations for a Navy program to buy chickens but out of that strain has often come was no longer in nature. The landscape, and pigs to increase the protein in the diet greater understanding. The art born even in those early years of war, was full of of South Vietnamese Navy families. of America's wars has made a lasting fear." "I am still angry at the incredible ineffi contribution. It is one of the ways in Olsen decided to become a professional ciency and wasted energy I experienced in painter after reading the work of Giotto, an the Navy," Posner explains. -
Comets, Asteroids, and Meteorites
Comets, Asteroids, and Meteorites Clues to the Origin of the Solar System Is Pluto a Planet? Introduction • There is evidence that the small amounts of debris that we observe in our Solar System is a remnant of a previous era of intense bombardment that produced frequent impacts on all of the planets – the Late Heavy Bombardment (~4.1 billion years ago) • Moon and Mercury for example, testify to this episode of intense cratering. • Such bombardment was universal and hammered the Earth as well, later to be disguised by erosion and plate tectonics. • The survivors of this original space debris, still exist today, in the form of asteroids, comets, and meteoroids. The 1908 Tunguska Event • First proposed that the Tunguska event was caused by the collision between the Earth and a small comet. • not a reasonable explanation because an icy comet would have exploded too high in the atmosphere to produce the damage seen from the Tunguska event. • consistent with the Earth colliding with an 80-meter diameter, rocky meteoroid traveling at hypersonic speed, about 79,000 km/h. • Some particles consistent in composition with meteoritic dust were found embedded in tree resin at the impact site. • modeled the impact and found it consistent with the impact of a 70-meter diameter stony meteorite that exploded in the atmosphere. 1969 Chihuahua Mexico Event • In 1969 hundreds of people watched while an intense blue-white light crossed the night sky near Chihuahua, Mexico. • punctuated by an explosion that showered the ground with hundreds of rocks, carbonaceous chondrites, all fragments of what is now known as the Allende meteorite.