HARVARD COLLEGE OBSERVATORY Cambridge, Massachusetts 02138
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Aitken Basin
Geological and geochemical analysis of units in the South Pole – Aitken Basin A.M. Borst¹,², F.S. Bexkens¹,², B. H. Foing², D. Koschny² ¹ Department of Petrology, VU University Amsterdam ² SCI-S. Research and Scientific Support Department, ESA – ESTEC Student Planetary Workshop 10-10-2008 ESA/ESTEC The Netherlands The South Pole – Aitken Basin Largest and oldest Lunar impact basin - Diameter > 2500 km - Depth > 12 km - Age 4.2 - 3.9 Ga Formed during Late heavy bombardment? Window into the interior and evolution of the Moon Priority target for future sample return missions Digital Elevation Model from Clementine altimetry data. Produced in ENVI, 50x vertical exaggeration, orthographic projection centered on the far side. Red +10 km, purple/black -10km. (A.M.Borst et.al. 2008) 1 The Moon and the SPA Basin Geochemistry Iron map South Pole – Aitken Basin mafic anomaly • High Fe, Th, Ti and Mg abundances • Excavation of mafic deep crustal / upper mantle material Thorium map Clementine 750 nm albedo map from USGS From Paul Lucey, J. Geophys. Res., 2000 Map-a-Planet What can we learn from the SPA Basin? • Large impacts; Implications and processes • Volcanism; Origin, age and difference with near side mare basalts • Cratering record; Age, frequency and size distribution • Late Heavy Bombardment; Intensity, duration and origin • Composition of the deeper crust and possibly upper mantle 2 Topics of SPA Basin study 1) Global structure of the basin (F.S. Bexkens et al, 2008) • Rims, rings, ejecta distribution, subsequent craters modifications, reconstructive -
Template for Two-Page Abstracts in Word 97 (PC)
GEOLOGIC MAPPING OF THE LUNAR SOUTH POLE QUADRANGLE (LQ-30). S.C. Mest1,2, D.C. Ber- man1, and N.E. Petro2, 1Planetary Science Institute, 1700 E. Ft. Lowell, Suite 106, Tucson, AZ 85719-2395 ([email protected]); 2Planetary Geodynamics Laboratory, Code 698, NASA GSFC, Greenbelt, MD 20771. Introduction: In this study we use recent image, the surface [7]. Impact craters display morphologies spectral and topographic data to map the geology of the ranging from simple to complex [7-9,24] and most lunar South Pole quadrangle (LQ-30) at 1:2.5M scale contain floor deposits distinct from surrounding mate- [1-7]. The overall objective of this research is to con- rials. Most of these deposits likely consist of impact strain the geologic evolution of LQ-30 (60°-90°S, 0°- melt; however, some deposits, especially on the floors ±180°) with specific emphasis on evaluation of a) the of the larger craters and basins (e.g., Antoniadi), ex- regional effects of impact basin formation, and b) the hibit low albedo and smooth surfaces and may contain spatial distribution of ejecta, in particular resulting mare. Higher albedo deposits tend to contain a higher from formation of the South Pole-Aitken (SPA) basin density of superposed impact craters. and other large basins. Key scientific objectives in- Antoniadi Crater. Antoniadi crater (D=150 km; clude: 1) Determining the geologic history of LQ-30 69.5°S, 172°W) is unique for several reasons. First, and examining the spatial and temporal variability of Antoniadi is the only lunar crater that contains both a geologic processes within the map area. -
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). -
Alaska Regional Directors Offices Director Email Address Contact Numbers Supt
Alaska Regional Directors Offices Director Email Address Contact Numbers Supt. Phone Fax Code ABLI RegionType Unit U.S Fish and Wildlife Service (FWS) Alaska Region (FWS) HASKETT,GEOFFREY [email protected] 1011 East Tudor Road Phone: 907‐ 786‐3309 Anchorage, AK 99503 Fax: 907‐ 786‐3495 Naitonal Park Service(NPS) Alaska Region (NPS) MASICA,SUE [email protected] 240 West 5th Avenue,Suite 114 Phone:907‐644‐3510 Anchoorage,AK 99501 Bureau of Indian Affairs(BIA) Alaska Region (BIA) VIRDEN,EUGENE [email protected] Bureau of Indian Affairs Phone: 907‐586‐7177 PO Box 25520 Telefax: 907‐586‐7252 709 West 9th Street Juneau, AK 99802 Anchorage Agency Phone: 1‐800‐645‐8465 Bureau of Indian Affairs Telefax:907 271‐4477 3601 C Street Suite 1100 Anchorage, AK 99503‐5947 Telephone: 1‐800‐645‐8465 Bureau of Land Manangement (BLM) Alaska State Office (BLM) CRIBLEY,BUD [email protected] Alaska State Office Phone: 907‐271‐5960 222 W 7th Avenue #13 FAX: 907‐271‐3684 Anchorage, AK 99513 United States Geological Survey(USGS) Alaska Area (USGS) BARTELS,LESLIE lholland‐[email protected] 4210 University Dr., Anchorage, AK 99508‐4626 Phone:907‐786‐7055 Fax: 907‐ 786‐7040 Bureau of Ocean Energy Management(BOEM) Alaska Region (BOEM) KENDALL,JAMES [email protected] 3801 Centerpoint Drive Phone: 907‐ 334‐5208 Suite 500 Anchorage, AK 99503 Ralph Moore [email protected] c/o Katmai NP&P (907) 246‐2116 ANIA ANTI AKR NPRES ANIAKCHAK P.O. Box 7 King Salmon, AK 99613 (907) 246‐3305 (907) 246‐2120 Jeanette Pomrenke [email protected] P.O. -
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. -
Human and Machine in Spaceflight
Digital Apollo: Human and Machine in Spaceflight David A. Mindell The MIT Press Cambridge, Massachusetts London, England ( 2008 Massachusetts Institute of Technology All rights reserved. No part of this book may be reproduced in any form by any electronic or mechanical means (including photocopying, recording, or information storage and retrieval) without permission in writing from the publisher. For information about special quantity discounts, please email [email protected] This book was set in Stone Serif and Stone Sans on 3B2 by Asco Typesetters, Hong Kong. Printed and bound in the United States of America. Library of Congress Cataloging-in-Publication Data Mindell, David A. Digital Apollo : human and machine in spaceflight / David A. Mindell. p. cm. Includes bibliographical references and index. ISBN 978-0-262-13497-2 (hardcover : alk. paper) 1. Human-machine systems. 2. Project Apollo (U.S.)—History. 3. Astronautics—United States—History. 4. Manned spaceflight—History. I. Title. TA167.M59 2008 629.47 04—dc22 2007032255 10987654321 Index Accelerometers, 1 control and, 19–22 Apollo program and, 97, 109–110, 119, 132, F-80 Shooting Star, 45 174, 194, 201 F-104 Starfighter, 45 AC Spark Plug, 110, 127, 134, 137 SR-71, 45 Adams, Mike, 59–61 stability and, 19–22 Adaptive control systems, 57–61, 77 U-2, 45 AGC (Apollo guidance computer), 259 X-1, 44, 46 Apollo 4 and, 174–175 X-15, 6 (see also X-15) Apollo 5 and, 175 Air-pressure gauges, 24 Apollo 7 and, 177 Aldrin, Edwin ‘‘Buzz,’’ 1–4, 8, 86 astronaut input and, 159 Eagle and, 217–232 -
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. -
Special Catalogue Milestones of Lunar Mapping and Photography Four Centuries of Selenography on the Occasion of the 50Th Anniversary of Apollo 11 Moon Landing
Special Catalogue Milestones of Lunar Mapping and Photography Four Centuries of Selenography On the occasion of the 50th anniversary of Apollo 11 moon landing Please note: A specific item in this catalogue may be sold or is on hold if the provided link to our online inventory (by clicking on the blue-highlighted author name) doesn't work! Milestones of Science Books phone +49 (0) 177 – 2 41 0006 www.milestone-books.de [email protected] Member of ILAB and VDA Catalogue 07-2019 Copyright © 2019 Milestones of Science Books. All rights reserved Page 2 of 71 Authors in Chronological Order Author Year No. Author Year No. BIRT, William 1869 7 SCHEINER, Christoph 1614 72 PROCTOR, Richard 1873 66 WILKINS, John 1640 87 NASMYTH, James 1874 58, 59, 60, 61 SCHYRLEUS DE RHEITA, Anton 1645 77 NEISON, Edmund 1876 62, 63 HEVELIUS, Johannes 1647 29 LOHRMANN, Wilhelm 1878 42, 43, 44 RICCIOLI, Giambattista 1651 67 SCHMIDT, Johann 1878 75 GALILEI, Galileo 1653 22 WEINEK, Ladislaus 1885 84 KIRCHER, Athanasius 1660 31 PRINZ, Wilhelm 1894 65 CHERUBIN D'ORLEANS, Capuchin 1671 8 ELGER, Thomas Gwyn 1895 15 EIMMART, Georg Christoph 1696 14 FAUTH, Philipp 1895 17 KEILL, John 1718 30 KRIEGER, Johann 1898 33 BIANCHINI, Francesco 1728 6 LOEWY, Maurice 1899 39, 40 DOPPELMAYR, Johann Gabriel 1730 11 FRANZ, Julius Heinrich 1901 21 MAUPERTUIS, Pierre Louis 1741 50 PICKERING, William 1904 64 WOLFF, Christian von 1747 88 FAUTH, Philipp 1907 18 CLAIRAUT, Alexis-Claude 1765 9 GOODACRE, Walter 1910 23 MAYER, Johann Tobias 1770 51 KRIEGER, Johann 1912 34 SAVOY, Gaspare 1770 71 LE MORVAN, Charles 1914 37 EULER, Leonhard 1772 16 WEGENER, Alfred 1921 83 MAYER, Johann Tobias 1775 52 GOODACRE, Walter 1931 24 SCHRÖTER, Johann Hieronymus 1791 76 FAUTH, Philipp 1932 19 GRUITHUISEN, Franz von Paula 1825 25 WILKINS, Hugh Percy 1937 86 LOHRMANN, Wilhelm Gotthelf 1824 41 USSR ACADEMY 1959 1 BEER, Wilhelm 1834 4 ARTHUR, David 1960 3 BEER, Wilhelm 1837 5 HACKMAN, Robert 1960 27 MÄDLER, Johann Heinrich 1837 49 KUIPER Gerard P. -
Small, Young Volcanic Deposits Around the Lunar Farside Craters Rosseland, Bolyai, and Roche
44th Lunar and Planetary Science Conference (2013) 2024.pdf SMALL, YOUNG VOLCANIC DEPOSITS AROUND THE LUNAR FARSIDE CRATERS ROSSELAND, BOLYAI, AND ROCHE. J. H. Pasckert1, H. Hiesinger1, and C. H. van der Bogert1. 1Institut für Planetologie, Westfälische Wilhelms-Universität, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany. jhpasckert@uni- muenster.de Introduction: To understand the thermal evolu- mare basalts on the near- and farside. This gives us the tion of the Moon it is essential to investigate the vol- opportunity to investigate the history of small scale canic history of both the lunar near- and farside. While volcanism on the lunar farside. the lunar nearside is dominated by mare volcanism, the farside shows only some isolated mare deposits in the large craters and basins, like the South Pole-Aitken basin or Tsiolkovsky crater [e.g., 1-4]. This big differ- ence in volcanic activity between the near- and farside is of crucial importance for understanding the volcanic evolution of the Moon. The extensive mare volcanism of the lunar nearside has already been studied in great detail by numerous authors [e.g., 4-8] on the basis of Lunar Orbiter and Apollo data. New high-resolution data obtained by the Lunar Reconnaissance Orbiter (LRO) and the SELENE Terrain Camera (TC) now allow us to investigate the lunar farside in great detail. Basaltic volcanism of the lunar nearside was active for almost 3 Ga, lasting from ~3.9-4.0 Ga to ~1.2 Ga before present [5]. In contrast to the nearside, most eruptions of mare deposits on the lunar farside stopped much earlier, ~3.0 Ga ago [9]. -
A 1 Case-PR/ }*Rciofft.;Is Report
.A 1 case-PR/ }*rciofft.;is Report (a) This eruption site on Mauna Loa Volcano was the main source of the voluminous lavas that flowed two- thirds of the distance to the town of Hilo (20 km). In the interior of the lava fountains, the white-orange color indicates maximum temperatures of about 1120°C; deeper orange in both the fountains and flows reflects decreasing temperatures (<1100°C) at edges and the surface. (b) High winds swept the exposed ridges, and the filter cannister was changed in the shelter of a p^hoehoc (lava) ridge to protect the sample from gas contamination. (c) Because of the high temperatures and acid gases, special clothing and equipment was necessary to protect the eyes. nose, lungs, and skin. Safety features included military flight suits of nonflammable fabric, fuil-face respirators that are equipped with dual acidic gas filters (purple attachments), hard hats, heavy, thick-soled boots, and protective gloves. We used portable radios to keep in touch with the Hawaii Volcano Observatory, where the area's seismic activity was monitored continuously. (d) Spatter activity in the Pu'u O Vent during the January 1984 eruption of Kilauea Volcano. Magma visible in the circular conduit oscillated in a piston-like fashion; spatter was ejected to heights of 1 to 10 m. During this activity, we sampled gases continuously for 5 hours at the west edge. Cover photo: This aerial view of Kilauea Volcano was taken in April 1984 during overflights to collect gas samples from the plume. The bluish portion of the gas plume contained a far higher density of fine-grained scoria (ash). -
Impact Cratering
6 Impact cratering The dominant surface features of the Moon are approximately circular depressions, which may be designated by the general term craters … Solution of the origin of the lunar craters is fundamental to the unravel- ing of the history of the Moon and may shed much light on the history of the terrestrial planets as well. E. M. Shoemaker (1962) Impact craters are the dominant landform on the surface of the Moon, Mercury, and many satellites of the giant planets in the outer Solar System. The southern hemisphere of Mars is heavily affected by impact cratering. From a planetary perspective, the rarity or absence of impact craters on a planet’s surface is the exceptional state, one that needs further explanation, such as on the Earth, Io, or Europa. The process of impact cratering has touched every aspect of planetary evolution, from planetary accretion out of dust or planetesimals, to the course of biological evolution. The importance of impact cratering has been recognized only recently. E. M. Shoemaker (1928–1997), a geologist, was one of the irst to recognize the importance of this process and a major contributor to its elucidation. A few older geologists still resist the notion that important changes in the Earth’s structure and history are the consequences of extraterres- trial impact events. The decades of lunar and planetary exploration since 1970 have, how- ever, brought a new perspective into view, one in which it is clear that high-velocity impacts have, at one time or another, affected nearly every atom that is part of our planetary system. -
University of Cincinnati
UNIVERSITY OF CINCINNATI Date:__7/30/07_________________ I, __ MUNISH GUPTA_____________________________________, hereby submit this work as part of the requirements for the degree of: DOCTORATE OF PHILOSOPHY (Ph.D) in: MATERIALS SCIENCE AND ENGINEERING It is entitled: LOW-PRESSURE AND ATMOSPHERIC PRESSURE PLASMA POLYMERIZED SILICA-LIKE FILMS AS PRIMERS FOR ADHESIVE BONDING OF ALUMINUM This work and its defense approved by: Chair: __Dr. F. JAMES BOERIO ___ ______ __Dr. GREGORY BEAUCAGE __ ___ __ __Dr. RODNEY ROSEMAN _____ ___ __Dr. JUDE IROH _ _____________ _______________________________ LOW-PRESSURE AND ATMOSPHERIC PRESSURE PLASMA POLYMERIZED SILICA-LIKE FILMS AS PRIMERS FOR ADHESIVE BONDING OF ALUMINUM A dissertation submitted to the Division of Research and Advanced Studies of the University of Cincinnati in partial fulfillment of the requirements for the degree of DOCTORATE OF PHILOSOPHY (Ph.D) in the Department of Chemical and Material Engineering of the College of Engineering 2007 by Munish Gupta M.S., University of Cincinnati, 2005 B.E., Punjab Technical University, India, 2000 Committee Chair: Dr. F. James Boerio i ABSTRACT Plasma processes, including plasma etching and plasma polymerization, were investigated for the pretreatment of aluminum prior to structural adhesive bonding. Since native oxides of aluminum are unstable in the presence of moisture at elevated temperature, surface engineering processes must usually be applied to aluminum prior to adhesive bonding to produce oxides that are stable. Plasma processes are attractive for surface engineering since they take place in the gas phase and do not produce effluents that are difficult to dispose off. Reactive species that are generated in plasmas have relatively short lifetimes and form inert products.