A Compositional Assessment of the Enormous South Pole - Aitken Basin Grounded in Laboratory Spectroscopy of Pyroxene-Bearing Materials

Total Page:16

File Type:pdf, Size:1020Kb

A Compositional Assessment of the Enormous South Pole - Aitken Basin Grounded in Laboratory Spectroscopy of Pyroxene-Bearing Materials A Compositional Assessment of the Enormous South Pole - Aitken Basin Grounded in Laboratory Spectroscopy of Pyroxene-Bearing Materials By Daniel Patrick Moriarty III B.S., The University of Massachusetts, 2009 Sc.M., Brown University, 2012 A dissertation Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Program of Earth, Environmental, and Planetary Sciences at Brown University Providence, Rhode Island May, 2016 © Copyright 2016 by Daniel Patrick Moriarty III ii This dissertation by Daniel P. Moriarty III is accepted in its present form by the Department of Geological Sciences as satisfying the dissertation requirement for the degree of Doctor of Philosophy. ________________ __________________________________________ Date Professor Carle M. Pieters, Brown University, Advisor Recommended to the Graduate Council ________________ __________________________________________ Date Professor James W. Head, Brown University, Reader ________________ __________________________________________ Date Professor E. Marc Parmentier, Brown University, Reader ________________ __________________________________________ Date Professor Stephen W. Parman, Brown University Reader ________________ __________________________________________ Date Professor Jessica Sunshine, University of Maryland, Reader Approved by the Graduate Council ________________ ______________________________________ Date Peter M. Weber Dean of the Graduate School iii CURRICULUM VITAE Daniel Patrick Moriarty III Brown University Department of Earth, Environmental, and Planetary Sciences 324 Brook Street | Providence, RI 02912 401.258.7926 | [email protected] Education Brown University Providence, RI Ph.D. in Earth, Environmental, and Planetary Sciences Expected May 2016 Advisor: Dr. Carlé Pieters Thesis Title: A Compositional Assessment of the Enormous South Pole - Aitken Basin Grounded in Laboratory Spectroscopy of Pyroxene-Bearing Materials Brown University Providence, RI Sc.M. in Geological Sciences May 2012 Advisor: Dr. Carlé Pieters Thesis Title: Compositional Heterogeneity of Central Peaks within the South Pole - Aitken Basin University of Massachusetts Amherst, MA B.S. in Physics May 2009 B.S. in Astrophysics Advisor: Dr. Grant Wilson Thesis Title: IDL to C++ Translation of the AzTEC Submillimeter Camera Data Pipeline Employment Johns Hopkins University Applied Physics Lab Laurel, MD Advisor: Karl Hibbitts 2009-2010 Position: Laboratory Assistant Responsibilities: FTIR spectroscopy (transmission and reflectance) of lunar and cometary materials; Design, maintenance, and implementation of ultra-high vacuum environment chamber; Water/ice deposition and desorption experiments iv First-Authored Publications Moriarty III, D. P. and C. M. Pieters (2016), Complexities in pyroxene compositions derived from absorption band centers: Examples from Apollo samples, HED meteorites, synthetic pure pyroxenes, and remote sensing data, Meteoritics and Planetary Science, doi: 10.1111/maps.12588. Moriarty III, D. P. and C. M. Pieters (2015), The nature and origin of Mafic Mound in the South Pole - Aitken Basin, Geophysical Research Letters, 42:19:7907-7915, doi: 10.1002/2015GL065718. Moriarty III, D. P., C. M. Pieters, and P. J. Isaacson (2013), Compositional heterogeneity of central peaks within the South Pole-Aitken Basin, Journal of Geophysical Research, 118, 2310-2322, doi: 10.1002/2013JE004376. In preparation: Moriarty III, D. P. and C. M. Pieters (in preparation), The character of South Pole - Aitken I: Patterns of surface and sub-surface composition. Moriarty III, D. P. and C. M. Pieters (in preparation), The character of South Pole - Aitken II: Models of crust/mantle stratigraphy. Co-Authored Publications Pieters, C. M., K. Donaldson Hanna, L. Cheek, D. Dhingra, T. Prissel, C. Jackson, D. Moriarty, S. Parman, and L. A. Taylor (2014), The distribution of Mg-spinel across the Moon and constraints on crustal origin, American Mineralogist, 99:1893-1910, doi: 10.2138/am-2014-4776. Cheek, L. C., C. M. Pieters, J. W. Boardman, R. N. Clark, J. P. Combe, J. W. Head, P. J. Isaacson, T. B. McCord, D. Moriarty, J. W. Nettles, N. E. Petro, J. M. Sunshine, and L. A. Taylor (2011), Goldschmidt crater and the Moon's north polar region: Results from the Moon Mineralogy Mapper (M3), Journal of Geophysical Research E: Planets, 116:2, doi: 10.1029/2010JE003702. In preparation: Prissel, T. C., D. P. Moriarty III, C. M. Pieters, J. W. Head, and S. W. Parman (in preparation), Characterization and identification of low-FeO, high Al2O3 extrusive deposits on the Moon by VNIR spectroscopy. Extended Abstracts (First-Authored Only) Moriarty III, D. P. and C. M. Pieters (2016), South Pole - Aitken Basin as a probe to the lunar interior, Lunar Planet. Sci. Conf., XLVII, abstract 1763. Moriarty III, D. P. and C. M. Pieters (2016), Impact melt and magmatic processes in central South Pole - Aitken Basin, Lunar Planet. Sci. Conf., XLVII, abstract 1735. Moriarty III, D. P. and C. M. Pieters (2015), The composition of Mafic Mound: An unusual feature within the South Pole – Aitken Basin, Lunar Planet. Sci. Conf., XLVI, abstract 2105. (Oral Presentation) v Moriarty III, D. P. and C. M. Pieters (2015), Compositional diversity across the Humboldtianum Basin, Lunar Planet. Sci. Conf., XLVI, abstract 2100. (Poster Presentation) Moriarty III, D. P. and C. M. Pieters (2014), LSCC samples as ground truth: Using spectral parameters developed for M3 to assess composition and maturity, Lunar Planet. Sci. Conf., XLV, abstract 2532. (Poster Presentation) Moriarty III, D. P. and C. M. Pieters (2014), Evaluation of stratigraphy at the South Pole – Aitken Basin: From local to regional, Lunar Planet. Sci. Conf., XLV, abstract 2516. (Oral Presentation) Moriarty III, D. P., P. J. Isaacson, and C. M. Pieters (2013), NW-Central South Pole – Aitken: Compositional diversity, geologic context, and implications for basin evolution, Lunar Planet. Sci. Conf., XLIV, abstract 3039. (Oral Presentation) Moriarty III, D. P., C. M. Pieters, N. Petro, and P. J. Isaacson (2012), Compositional heterogeneity within lunar central peaks, Lunar Planet. Sci. Conf., XLIII, abstract 2399. (Poster Presentation) Moriarty III, D. P., C. M. Pieters, J. W. Nettles, P. J. Isaacson, L. Cheek, J. W. Head III, S. Tompkins, and N. E. Petro (2011), Finsen and Alder: A compositional study of lunar central peak craters in the South Pole-Aitken basin, Lunar Planet. Sci. Conf., XLII, abstract 2564. (Poster Presentation) Moriarty III, D. P., C. A. Hibbitts, C. M. Lisse, M. D. Dyar, G. Harlow, D. Ebel, and R. Peale (2010), Near-far IR spectra of sulfide minerals relevant to comets, Lunar Planet. Sci. Conf., XLI, abstract 2447. (Poster Presentation) Additional Science Talks November 2015: Brown University Department of Earth, Environmental, and Planetary Sciences Lunch Bunch / SSERVI Seminar. “South Pole - Aitken Basin: Investigating the Moon's Largest Mysteries” July 2015: SSERVI Exploration Science Forum. "The Nature and Origin of Mafic Mound within the South Pole - Aitken Basin" April 2015: Brown University Department of Earth, Environmental, and Planetary Sciences Lunch Bunch / SSERVI Seminar. “The Nature and Origin of Mafic Mound in the South Pole - Aitken Basin” July 2014: SSERVI Exploration Science Forum. “The Diverse Local and Regional Stratigraphy of the South Pole – Aitken Basin” February 2013: Brown University Department of Geological Sciences Lunch Bunch. “The South Pole – Aitken Basin: Compositional Diversity, Geologic Context, and Implications for Basin Evolution from Moon Mineralogy Mapper Spectral Parameters. April 2012: Brown University Department of Geological Sciences Lunch Bunch. “Compositional Heterogeneity of Central Peaks within the South Pole -Aitken Basin” vi Teaching, Service, and Honors Teaching Assistant Brown University Course: GEOL0220 Physical Processes in Geology Spring 2016 Instructors: Dr. Jan Tullis, Dr. Karen Fischer Member Brown University Diversity Working Group, Department of Earth, 2015-Present Environmental, and Planetary Sciences, Safety Officer Brown University GeoClub 2014-2015 Member SSERVI LunGradCon Organizing Committee 2014 Teaching Assistant Brown University Course: GEOL0220 Physical Processes in Geology Fall 2014 Instructors: Dr. Jan Tullis, Dr. Karen Fischer Recipient LMIPEV Barringer Travel Grant 2013 Member Brown University RELAB Database Working Group 2012-2013 Member Brown University Asteroid and Lunar Environment Chamber Working Group 2011-2012 Recipient Brown University First Year Graduate Fellowship 2010-2011 Technical Skills Laboratory preparation of geologic materials; FTIR spectroscopy; Interactive Data Language programming; ASD Field Spec; C++ programming; Kaleidagraph; General use and maintenance of environment chambers; ESRI ArcGIS; Exelis ENVI; USGS ISIS; Adobe Creative Suite (Illustrator, Photoshop, InDesign); Various sound and video editing programs; and MS Office (Word, PowerPoint, Excel). vii ACKNOWLEGEMENTS I am deeply thankful to my advisor, Carlé Pieters. My first few semesters at Brown were a struggle, and I probably didn't deserve to continue on in the graduate program after receiving my master's degree. Carlé was very honest with me about the severity of the situation. I was fairly discouraged, but after some soul searching I realized I did not want to squander the very special opportunity I had as a graduate student in one of the best planetary science programs in the world. Over the next year, Carlé worked intensively with me to improve my
Recommended publications
  • 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.
    [Show full text]
  • Minimum Dietary Diversity for Women a Guide to Measurement
    FANTA III FOOD AND NUTRITION TECHNICAL A SSISTANCE Minimum Dietary Diversity for Women A Guide to Measurement Minimum Dietary Diversity for Women A Guide to Measurement Published by the Food and Agriculture Organization of the United Nations and USAID’s Food and Nutrition Technical Assistance III Project (FANTA), managed by FHI 360 Rome, 2016 Recommended citation: FAO and FHI 360. 2016. Minimum Dietary Diversity for Women: A Guide for Measurement. Rome: FAO. The designations employed and the presentation of material in this information product do not imply the expression of any opinion whatsoever on the part of the Food and Agriculture Organization of the United Nations (FAO), or of FANTA/FHI 360 concerning the legal or development status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. The mention of specific companies or products of manufacturers, whether or not these have been patented, does not imply that these have been endorsed or recommended by FAO, or FHI 360 in preference to others of a similar nature that are not mentioned. Additional funding for this publication was made possible by the generous support of the American people through the support of the Office of Health, Infectious Diseases, and Nutrition, Bureau for Global Health, U.S. Agency for International Development (USAID), under terms of Cooperative Agreement AID-OAA-A-12-00005 through the Food and Nutrition Technical Assistance III Project (FANTA), managed by FHI 360. The views expressed in this information product are those of the author(s) and do not necessarily reflect the views or policies of FAO, FHI 360, UC Davis, USAID or the U.S.
    [Show full text]
  • The History Group's Silver Jubilee
    History of Meteorology and Physical Oceanography Special Interest Group Newsletter 1, 2010 ANNUAL REPORT CONTENTS We asked in the last two newsletters if you Annual Report ........................................... 1 thought the History Group should hold an Committee members ................................ 2 Annual General Meeting. There is nothing in Mrs Jean Ludlam ...................................... 2 the By-Law s or Standing Orders of the Royal Meteorological Society that requires the The 2010 Summer Meeting ..................... 3 Group to hold one, nor does Charity Law Report of meeting on 18 November .......... 4 require one. Which papers have been cited? .............. 10 Don’t try this at home! ............................. 10 Only one person responded, and that was in More Richard Gregory reminiscences ..... 11 passing during a telephone conversation about something else. He was in favour of Storm warnings for seafarers: Part 2 ....... 13 holding an AGM but only slightly so. He Swedish storm warnings ......................... 17 expressed the view that an AGM provides an Rikitea meteorological station ................. 19 opportunity to put forward ideas for the More on the D-Day forecast .................... 20 Group’s committee to consider. Recent publications ................................ 21 As there has been so little response, the Did you know? ........................................ 22 Group’s committee has decided that there will Date for your diary .................................. 23 not be an AGM this year. Historic picture ........................................ 23 2009 members of the Group ................... 24 CHAIRMAN’S REVIEW OF 2009 by Malcolm Walker year. Sadly, however, two people who have supported the Group for many years died during I begin as I did last year. Without an enthusiastic 2009. David Limbert passed away on 3 M a y, and conscientious committee, there would be no and Jean Ludlam died in October (see page 2).
    [Show full text]
  • LCROSS (Lunar Crater Observation and Sensing Satellite) Observation Campaign: Strategies, Implementation, and Lessons Learned
    Space Sci Rev DOI 10.1007/s11214-011-9759-y LCROSS (Lunar Crater Observation and Sensing Satellite) Observation Campaign: Strategies, Implementation, and Lessons Learned Jennifer L. Heldmann · Anthony Colaprete · Diane H. Wooden · Robert F. Ackermann · David D. Acton · Peter R. Backus · Vanessa Bailey · Jesse G. Ball · William C. Barott · Samantha K. Blair · Marc W. Buie · Shawn Callahan · Nancy J. Chanover · Young-Jun Choi · Al Conrad · Dolores M. Coulson · Kirk B. Crawford · Russell DeHart · Imke de Pater · Michael Disanti · James R. Forster · Reiko Furusho · Tetsuharu Fuse · Tom Geballe · J. Duane Gibson · David Goldstein · Stephen A. Gregory · David J. Gutierrez · Ryan T. Hamilton · Taiga Hamura · David E. Harker · Gerry R. Harp · Junichi Haruyama · Morag Hastie · Yutaka Hayano · Phillip Hinz · Peng K. Hong · Steven P. James · Toshihiko Kadono · Hideyo Kawakita · Michael S. Kelley · Daryl L. Kim · Kosuke Kurosawa · Duk-Hang Lee · Michael Long · Paul G. Lucey · Keith Marach · Anthony C. Matulonis · Richard M. McDermid · Russet McMillan · Charles Miller · Hong-Kyu Moon · Ryosuke Nakamura · Hirotomo Noda · Natsuko Okamura · Lawrence Ong · Dallan Porter · Jeffery J. Puschell · John T. Rayner · J. Jedadiah Rembold · Katherine C. Roth · Richard J. Rudy · Ray W. Russell · Eileen V. Ryan · William H. Ryan · Tomohiko Sekiguchi · Yasuhito Sekine · Mark A. Skinner · Mitsuru Sôma · Andrew W. Stephens · Alex Storrs · Robert M. Suggs · Seiji Sugita · Eon-Chang Sung · Naruhisa Takatoh · Jill C. Tarter · Scott M. Taylor · Hiroshi Terada · Chadwick J. Trujillo · Vidhya Vaitheeswaran · Faith Vilas · Brian D. Walls · Jun-ihi Watanabe · William J. Welch · Charles E. Woodward · Hong-Suh Yim · Eliot F. Young Received: 9 October 2010 / Accepted: 8 February 2011 © The Author(s) 2011.
    [Show full text]
  • USGS Open-File Report 2005-1190, Table 1
    TABLE 1 GEOLOGIC FIELD-TRAINING OF NASA ASTRONAUTS BETWEEN JANUARY 1963 AND NOVEMBER 1972 The following is a year-by-year listing of the astronaut geologic field training trips planned and led by personnel from the U.S. Geological Survey’s Branches of Astrogeology and Surface Planetary Exploration, in collaboration with the Geology Group at the Manned Spacecraft Center, Houston, Texas at the request of NASA between January 1963 and November 1972. Regional geologic experts from the U.S. Geological Survey and other governmental organizations and universities s also played vital roles in these exercises. [The early training (between 1963 and 1967) involved a rather large contingent of astronauts from NASA groups 1, 2, and 3. For another listing of the astronaut geologic training trips and exercises, including all attending and the general purposed of the exercise, the reader is referred to the following website containing a contribution by William Phinney (Phinney, book submitted to NASA/JSC; also http://www.hq.nasa.gov/office/pao/History/alsj/ap-geotrips.pdf).] 1963 16-18 January 1963: Meteor Crater and San Francisco Volcanic Field near Flagstaff, Arizona (9 astronauts). Among the nine astronaut trainees in Flagstaff for that initial astronaut geologic training exercise was Neil Armstrong--who would become the first man to step foot on the Moon during the historic Apollo 11 mission in July 1969! The other astronauts present included Frank Borman (Apollo 8), Charles "Pete" Conrad (Apollo 12), James Lovell (Apollo 8 and the near-tragic Apollo 13), James McDivitt, Elliot See (killed later in a plane crash), Thomas Stafford (Apollo 10), Edward White (later killed in the tragic Apollo 1 fire at Cape Canaveral), and John Young (Apollo 16).
    [Show full text]
  • 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.
    [Show full text]
  • Glossary Glossary
    Glossary Glossary Albedo A measure of an object’s reflectivity. A pure white reflecting surface has an albedo of 1.0 (100%). A pitch-black, nonreflecting surface has an albedo of 0.0. The Moon is a fairly dark object with a combined albedo of 0.07 (reflecting 7% of the sunlight that falls upon it). The albedo range of the lunar maria is between 0.05 and 0.08. The brighter highlands have an albedo range from 0.09 to 0.15. Anorthosite Rocks rich in the mineral feldspar, making up much of the Moon’s bright highland regions. Aperture The diameter of a telescope’s objective lens or primary mirror. Apogee The point in the Moon’s orbit where it is furthest from the Earth. At apogee, the Moon can reach a maximum distance of 406,700 km from the Earth. Apollo The manned lunar program of the United States. Between July 1969 and December 1972, six Apollo missions landed on the Moon, allowing a total of 12 astronauts to explore its surface. Asteroid A minor planet. A large solid body of rock in orbit around the Sun. Banded crater A crater that displays dusky linear tracts on its inner walls and/or floor. 250 Basalt A dark, fine-grained volcanic rock, low in silicon, with a low viscosity. Basaltic material fills many of the Moon’s major basins, especially on the near side. Glossary Basin A very large circular impact structure (usually comprising multiple concentric rings) that usually displays some degree of flooding with lava. The largest and most conspicuous lava- flooded basins on the Moon are found on the near side, and most are filled to their outer edges with mare basalts.
    [Show full text]
  • Imagining Outer Space Also by Alexander C
    Imagining Outer Space Also by Alexander C. T. Geppert FLEETING CITIES Imperial Expositions in Fin-de-Siècle Europe Co-Edited EUROPEAN EGO-HISTORIES Historiography and the Self, 1970–2000 ORTE DES OKKULTEN ESPOSIZIONI IN EUROPA TRA OTTO E NOVECENTO Spazi, organizzazione, rappresentazioni ORTSGESPRÄCHE Raum und Kommunikation im 19. und 20. Jahrhundert NEW DANGEROUS LIAISONS Discourses on Europe and Love in the Twentieth Century WUNDER Poetik und Politik des Staunens im 20. Jahrhundert Imagining Outer Space European Astroculture in the Twentieth Century Edited by Alexander C. T. Geppert Emmy Noether Research Group Director Freie Universität Berlin Editorial matter, selection and introduction © Alexander C. T. Geppert 2012 Chapter 6 (by Michael J. Neufeld) © the Smithsonian Institution 2012 All remaining chapters © their respective authors 2012 All rights reserved. No reproduction, copy or transmission of this publication may be made without written permission. No portion of this publication may be reproduced, copied or transmitted save with written permission or in accordance with the provisions of the Copyright, Designs and Patents Act 1988, or under the terms of any licence permitting limited copying issued by the Copyright Licensing Agency, Saffron House, 6–10 Kirby Street, London EC1N 8TS. Any person who does any unauthorized act in relation to this publication may be liable to criminal prosecution and civil claims for damages. The authors have asserted their rights to be identified as the authors of this work in accordance with the Copyright, Designs and Patents Act 1988. First published 2012 by PALGRAVE MACMILLAN Palgrave Macmillan in the UK is an imprint of Macmillan Publishers Limited, registered in England, company number 785998, of Houndmills, Basingstoke, Hampshire RG21 6XS.
    [Show full text]
  • 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.
    [Show full text]
  • Production and Saturation of Porosity in the Lunar Highlands from Impact Cratering
    The fractured Moon: Production and saturation of porosity in the lunar highlands from impact cratering The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Citation Soderblom, Jason M., et al. “The Fractured Moon: Production and Saturation of Porosity in the Lunar Highlands from Impact Cratering.” Geophysical Research Letters, vol. 42, no. 17, Sept. 2015, pp. 6939–44. © 2015 American Geophysical Union As Published http://dx.doi.org/10.1002/2015GL065022 Publisher American Geophysical Union (AGU) Version Final published version Citable link http://hdl.handle.net/1721.1/118615 Terms of Use Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. PUBLICATIONS Geophysical Research Letters RESEARCH LETTER The fractured Moon: Production and saturation 10.1002/2015GL065022 of porosity in the lunar highlands Key Points: from impact cratering • The relation between impact-generated porosity and crater size is quantified Jason M. Soderblom1, Alexander J. Evans2, Brandon C. Johnson1, H. Jay Melosh3, Katarina Miljković1,4, • Impacts into highly porous targets 5 6 7 8 3 result in positive gravity anomalies Roger J. Phillips , Jeffrey C. Andrews-Hanna , Carver J. Bierson , James W. Head III , Colleen Milbury , 9 7 1 2,10 11 • The cratering record of the oldest Gregory A. Neumann , Francis Nimmo , David E. Smith , Sean C. Solomon , Michael M. Sori , lunar surfaces is preserved in the
    [Show full text]
  • May 2016 | Volume 15, Issue 01 | Boeing.Com/Frontiers
    MAY 2016 | VOLUME 15, ISSUE 01 | BOEING.COM/FRONTIERS Solar revolution Spectrolab employees are powering the future— with sunshine MAY 2016 | 01 TABLE OF CONTENTS 12 06 Leadership Message 08 Snapshot 09 Quotables 10 Historical Perspective PHOTO: BOB FERGUSON | BOEING 12 Sweating the metal Go behind the scenes of the ongoing 737 MAX flight-test program, where the aircraft are pushed to the limit, and then some. 18 18 Desert bloom In the high desert of New Mexico, at Boeing’s site in Albuquerque, scientists and engineers are continually looking for ways to enhance modern civilization and military technologies. And at the nearby Starfire Optical Range, Boeing and the U.S. Air Force are jointly experimenting with lasers to better monitor man-made objects in orbit, much of it space debris. 28 Solar explorer A wholly owned Boeing subsidiary, Spectrolab has provided electric power to more than 600 satellites and delivered more than 4 million PHOTO: BOB FERGUSON | BOEING solar cells for communications, science and defense needs. It also provides 80 percent of the helicopter-mounted searchlights used 38 by U.S. law enforcement. 34 Great and small The Boeing AH-6 Little Bird, a light attack and reconnaissance helicopter, packs a lot of capability for its size. It is made at the Boeing site in Mesa, Ariz., alongside the bigger Apache. 38 Irish eyes are smiling Ryanair recently took delivery of its 400th 737-800, and a writer and photographer from Frontiers were on board for the flight to Ireland. 44 Strike dynasty Boeing’s new Harpoon Block II Plus is a network-enabled variant that can receive and transmit communications while in flight, allowing it to change course to strike a different target, even a moving target.
    [Show full text]
  • General Disclaimer One Or More of the Following Statements May Affect
    https://ntrs.nasa.gov/search.jsp?R=19710025504 2020-03-11T22:36:49+00:00Z View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by NASA Technical Reports Server General Disclaimer One or more of the Following Statements may affect this Document This document has been reproduced from the best copy furnished by the organizational source. It is being released in the interest of making available as much information as possible. This document may contain data, which exceeds the sheet parameters. It was furnished in this condition by the organizational source and is the best copy available. This document may contain tone-on-tone or color graphs, charts and/or pictures, which have been reproduced in black and white. This document is paginated as submitted by the original source. Portions of this document are not fully legible due to the historical nature of some of the material. However, it is the best reproduction available from the original submission. Produced by the NASA Center for Aerospace Information (CASI) 6 X t B ICC"m date: July 16, 1971 955 L'Enfant Plaza North, S. W Washington, D. C. 20024 to Distribution B71 07023 from. J. W. Head suhiecf Derivation of Topographic Feature Names in the Apollo 15 Landing Region - Case 340 ABSTRACT The topographic features in the region of the Apollo 15 landing site (Figure 1) are named for a number of philosophers, explorers and scientists (astronomers in particular) representing periods throughout recorded history. It is of particular interest that several of the individuals were responsible for specific discoveries, observations, or inventions which considerably advanced the study and under- standing of the moon (for instance, Hadley designed the first large reflecting telescope; Beer published classic maps and explanations of the moon's surface).
    [Show full text]