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RADAR POLARIZATION PROPERTIES AND LUNAR SECONDARY CRATERING A Dissertation Presented to the Faculty of the Graduate School of Cornell University In Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy by Kassandra Martin-Wells January 2013 © 2013 Kassandra Martin-Wells RADAR POLARIZATION PROPERTIES AND LUNAR SECONDARY CRATERING Kassandra Martin-Wells, Ph. D. Cornell University 2013 Age dating of planetary surfaces relies on an accurate correlation between lunar crater size-frequency distributions and radiometric ages of samples returned from the Moon. For decades, it has been assumed that cratering records are dominated by “primary” impacts of interplanetary bolides [McEwen et al., 2005]. Unlike primary craters, secondary craters, which originate as ejecta from large primary events, occur in large clusters in both space and time. It was long believed that the majority of secondary craters formed at low velocities near their parent crater, resulting in a class of craters with morphologies which are easily distinguished from primary craters of a similar size [McEwen et al., 2005]. However, recent work by Bierhaus et al. (2005), McEwen et al. (2005) argues that cratering records in the Solar System may be strongly contaminated by hard-to-identify secondary craters. They advise caution when relying on counts at small diameters [McEwen et al., 2005; Bierhaus et al., 2005]. Despite the difficulties, something must be done to improve the accuracy of age dates derived from size-frequency distributions of small craters. In this thesis, a method of secondary crater identification based on radar circular polarization properties is presented. The radar polarization and photographic studies of lunar secondary craters in this thesis reveal that secondary cratering is a widespread phenomenon on the lunar surface. -
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. -
July 2020 in This Issue Online Readers, ALPO Conference November 6-7, 2020 2 Lunar Calendar July 2020 3 Click on Images an Invitation to Join ALPO 3 for Hyperlinks
A publication of the Lunar Section of ALPO Edited by David Teske: [email protected] 2162 Enon Road, Louisville, Mississippi, USA Recent back issues: http://moon.scopesandscapes.com/tlo_back.html July 2020 In This Issue Online readers, ALPO Conference November 6-7, 2020 2 Lunar Calendar July 2020 3 click on images An Invitation to Join ALPO 3 for hyperlinks. Observations Received 4 By the Numbers 7 Submission Through the ALPO Image Achieve 4 When Submitting Observations to the ALPO Lunar Section 9 Call For Observations Focus-On 9 Focus-On Announcement 10 2020 ALPO The Walter H. Haas Observer’s Award 11 Sirsalis T, R. Hays, Jr. 12 Long Crack, R. Hill 13 Musings on Theophilus, H. Eskildsen 14 Almost Full, R. Hill 16 Northern Moon, H. Eskildsen 17 Northwest Moon and Horrebow, H. Eskildsen 18 A Bit of Thebit, R. Hill 19 Euclides D in the Landscape of the Mare Cognitum (and Two Kipukas?), A. Anunziato 20 On the South Shore, R. Hill 22 Focus On: The Lunar 100, Features 11-20, J. Hubbell 23 Recent Topographic Studies 43 Lunar Geologic Change Detection Program T. Cook 120 Key to Images in this Issue 134 These are the modern Golden Days of lunar studies in a way, with so many new resources available to lu- nar observers. Recently, we have mentioned Robert Garfinkle’s opus Luna Cognita and the new lunar map by the USGS. This month brings us the updated, 7th edition of the Virtual Moon Atlas. These are all wonderful resources for your lunar studies. -
Facts & Features Lunar Surface Elevations Six Apollo Lunar
Greek Mythology Quadrants Maria & Related Features Lunar Surface Elevations Facts & Features Selene is the Moon and 12 234 the goddess of the Moon, 32 Diameter: 2,160 miles which is 27.3% of Earth’s equatorial diameter of 7,926 miles 260 Lacus daughter of the titans 71 13 113 Mare Frigoris Mare Humboldtianum Volume: 2.03% of Earth’s volume; 49 Moons would fit inside Earth 51 103 Mortis Hyperion and Theia. Her 282 44 II I Sinus Iridum 167 125 321 Lacus Somniorum Near Side Mass: 1.62 x 1023 pounds; 1.23% of Earth’s mass sister Eos is the goddess 329 18 299 Sinus Roris Surface Area: 7.4% of Earth’s surface area of dawn and her brother 173 Mare Imbrium Mare Serenitatis 85 279 133 3 3 3 Helios is the Sun. Selene 291 Palus Mare Crisium Average Density: 3.34 gm/cm (water is 1.00 gm/cm ). Earth’s density is 5.52 gm/cm 55 270 112 is often pictured with a 156 Putredinis Color-coded elevation maps Gravity: 0.165 times the gravity of Earth 224 22 237 III IV cresent Moon on her head. 126 Mare Marginis of the Moon. The difference in 41 Mare Undarum Escape Velocity: 1.5 miles/sec; 5,369 miles/hour Selenology, the modern-day 229 Oceanus elevation from the lowest to 62 162 25 Procellarum Mare Smythii Distances from Earth (measured from the centers of both bodies): Average: 238,856 term used for the study 310 116 223 the highest point is 11 miles. -
Resources for Effective Philanthropic Events GLOBAL SERVICE INITIATIVE History, Mission and Goals
Resources for Effective Philanthropic Events GLOBAL SERVICE INITIATIVE History, Mission and Goals HISTORY Since 2010, Global Service Initiative (GSI) participants have traveled both within the United States and internationally in multidisciplinary teams to cities and communities to engage in active and meaningful service. These undergraduate brothers have the opportunity to gain new perspectives on a wide range of economic, political, cultural and social issues while meeting the needs of the local area as well as learning about and building upon community assets. DELTA UPSILON MISSION Building Better Men GSI MISSION We Change Men Who Change the World. GOALS GSI actively supports the creation of global perspectives, promotes leadership development and generates community-based service-learning opportunities while championing them as integral aspects of Delta Upsilon’s Mission, Values and Four Founding Principles. GSI creates a unique and powerful learning environment by integrating immersion-based experiences with focused and deliberate service and reflection activities. This experience fosters an attitude toward civic engagement, social change and cultural/global understanding and appreciation. 2 DELTA UPSILON INTERNATIONAL FRATERNITY Gaining Perspective on the Global Service Initiative There are a number of resources provided by the Fraternity that can give your chapter/colony and your potential donors a better understanding of the Global Service Initiative. Being able to effectively describe why this is a worthwhile cause will go a long way in gaining both member and donor support for your philanthropic events. UPS TA ILO EL N CHAPTER FUNDRAISING PAGES D E D There are chapter-specific fundraising pages that can be used to enhance and compliment your GSI N U O C I A T T A fundraising efforts. -
Communications of the LUNAR and PLANETARY LABORATORY
Communications of the LUNAR AND PLANETARY LABORATORY Number 70 Volume 5 Part 1 THE UNIVERSITY OF ARIZONA 1966 Communications of the Lunar and Planetary Laboratory These Communications contain the shorter publications and reports by the staff of the Lunar and Planetary Laboratory. They may be either original contributions, reprints of articles published in professional journals, preliminary reports, or announcements. Tabular material too bulky or specialized for regular journals is included if future use of such material appears to warrant it. The Communications are issued as separate numbers, but they are paged and indexed by volumes. The Communications are mailed to observatories and to laboratories known to be engaged in planetary, interplanetary or geophysical research in exchange for their reports and publica- tions. The University of Arizona Press can supply at cost copies to other libraries and interested persons. The University of Arizona GERARD P. KUIPER, Director Tucson, Arizona Lunar and Planetary Laboratory Published with the support of the National Aeronautics and Space Administration Library of Congress Catalog Number 62-63619 NO. 70 THE SYSTEM OF LUNAR CRATERS, QUADRANT IV by D. W. G. ARTHUR, RUTH H. PELLICORI, AND C. A. WOOD May25,1966 , ABSTRACT The designation, diameter, position, central peak information, and state of completeness are listed for each discernible crater with a diameter exceeding 3.5 km in the fourth lunar quadrant. The catalog contains about 8,000 items and is illustrated by a map in 11 sections. hiS Communication is the fourth and final part of listed in the catalog nor shown in the accompanying e System of Lunar Craters, which is a_calalag maps. -
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Global Challenges
6–10 JANUARY 2020 | ORLANDO, FL DRIVING AEROSPACE SOLUTIONS FOR GLOBAL CHALLENGES What’s going on in Page 25 aiaa.org/scitech #aiaaSciTech From the forefront of innovation to the frontlines of the mission. No matter the mission, Lockheed Martin uses a proven approach: engineer with purpose, innovate with passion and define the future. We take time to understand our customer’s challenges and provide solutions that help them keep the world secure. Their mission defines our purpose. Learn more at lockheedmartin.com. © 2019 Lockheed Martin Corporation FG19-23960_002 AIAA sponsorship.indd 1 12/10/19 3:20 PM Live: n/a Trim: H: 8.5in W: 11in Job Number: FG18-23208_002 Bleed: .25 all around Designer: Kevin Gray Publication: AIAA Sponsorship Gutter: None Communicator: Ryan Alford Visual: Male and female in front of screens. Resolution: 300 DPI Due Date: 12/10/19 Country: USA Density: 300 Color Space: CMYK NETWORK NAME: SciTech ON-SITE Wi-Fi From the forefront of innovation › PASSWORD: 2020scitech to the frontlines of the mission. CONTENTS Technical Program Committee .................................................................4 Welcome ........................................................................................................5 Sponsors and Supporters ..........................................................................7 Forum Overview ...........................................................................................8 Pre-Forum Activities ................................................................................. -
An Exploration of Therapists' Personal Experience of Loss and Grief and Impact on Therapeutic Approach Moonyeen O'phelan
Digital Commons at St. Mary's University Theses & Dissertations University Archives Fall 2012 An exploration of therapists' personal experience of loss and grief and impact on therapeutic approach Moonyeen O'Phelan Follow this and additional works at: https://commons.stmarytx.edu/dissertations Part of the Counseling Commons, and the Counseling Psychology Commons Recommended Citation O'Phelan, Moonyeen, "An exploration of therapists' personal experience of loss and grief and impact on therapeutic approach" (2012). Theses & Dissertations. 5. https://commons.stmarytx.edu/dissertations/5 This Dissertation is brought to you for free and open access by the University Archives at Digital Commons at St. Mary's University. It has been accepted for inclusion in Theses & Dissertations by an authorized administrator of Digital Commons at St. Mary's University. For more information, please contact [email protected]. AN EXPLORATION OF THERAPISTS’ PERSONAL EXPERIENCE OF LOSS AND GRIEF AND IMPACT ON THERAPEUTIC APPROACH APPROVED: H. Ray Wooten, Ph.D. Dissertation Advisor Laura A. Bryan, Ph.D. Randall R. Lyle, Ph.D. Henry Flores, Ph.D. Dean of Graduate School Date: __________________________________ Date: AN EXPLORATION OF THERAPISTS’ PERSONAL EXPERIENCE OF LOSS AND GRIEF AND IMPACT ON THERAPEUTIC APPROACH A DISSERTATION Presented to the Faculty of the Graduate School of St. Mary’s University in Partial Fulfillment of the Requirements for the Degree of DOCTOR OF PHILOSOPHY in Marriage and Family Therapy Moonyeen P. O’Phelan, M.A., R.N. San Antonio, Texas November 2012 Abstract AN EXPLORATION OF THERAPISTS’ PERSONAL EXPERIENCE OF LOSS AND GRIEF AND IMPACT ON THERAPEUTIC APPROACH Moonyeen P. O’Phelan St. -
COVERALLS and a CAMERA Reserved
BRAVO GUIDE TO ENTERTAINMENT APRIL 22, 2021 S afety is our priority. We are working hard to keep our senior care communities safe. Our team is ready to answer any questions you have about ongoing location availability and safety precautions. Call (308) 234-1888 to learn more. All faiths or beliefs are welcome. © 2020 The Evangelical Lutheran Good Samaritan Society. All rights COVERALLS AND A CAMERA reserved. 201870 Steinhausen always looks for interesting shots. — Page 5 Studies have shown Get into Nelson’s for a nice that the reason you Omaha Mattress may be awake right and box now is because you spring set. aren’t asleep. 2109 CENTRAL AVE DOWNTOWN KEARNEY 308-236-5031 2 DIVERSIONS KEARNEY HUB — THURSDAY, APRIL 22, 2021 KSO brings world premiere to Merryman stage Orchestra will be WHEN AND WHERE challenged Tuesday; What: “Love Stories Old and New,” a concert by Ke- hear musical Q&A arney Symphony Orchestra When: 7:30 p.m. Tuesday in ‘Poem’ Where: Merryman Per- forming Arts Center, 225 E. By RICK BROWN 22nd St. Yard Light Media Admission: $10 general admission KEARNEY — Alison Gaines Contact: 308-865-8618; strives to reach a balance in her UNK.edu/kso musical programming, creating a concert that will challenge the rio, commissioned by Kearney performers, satisfy the audience Symphony Orchestra. Gaines and yet offer pleasing music. likens the format of the music to a “We’re opening with a very technique used by American mod- challenging arrangement of ‘An ernist composer Charles Ives in American in Paris’ by George his work, “Unanswered Question.” Gershwin for brass and percus- “It uses the same instrumenta- sion,” said the director of Kearney Courtesy tion in a similar format where the Symphony Orchestra. -
Tom Swift in the Land of Wonders Or the Underground Search for the Idol of Gold
Tom Swift in the Land of Wonders or The Underground Search for the Idol of Gold by Victor Appleton 1917 2 Contents 1 A Wonderful Story 5 2 Professor Bumper Arrives 9 3 Blessings and Enthusiasm 13 4 Fenimore Beecher 17 5 The Little Green God 21 6 Unpleasant News 25 7 Tom Hears Something 29 8 Off for Honduras 33 9 Val Jacinto 37 10 In the Wilds 43 11 The Vampires 47 12 A False Friend 51 13 Forward Again 57 14 A New Guide 61 15 In the Coils 65 16 A Meeting in the Jungle 69 17 The Lost Map 75 18 \El Tigre!" 81 19 Poisoned Arrows 85 3 4 CONTENTS 20 An Old Legend 89 21 The Cavern 93 22 The Storm 97 23 Entombed Alive 103 24 The Revolving Stone 107 25 The Idol of Gold 113 Chapter 1 A Wonderful Story Tom Swift, who had been slowly looking through the pages of a magazine, in the contents of which he seemed to be deeply interested, turned the final folio, ruffled the sheets back again to look at a certain map and drawing, and then, slapping the book down on a table before him, with a noise not unlike that of a shot, exclaimed: \Well, that is certainly one wonderful story!" \What's it about, Tom?" asked his chum, Ned Newton. \Something about inside baseball, or a new submarine that can be converted into an airship on short notice?" \Neither one, you|you unscientific heathen," answered Tom, with a laugh at Ned. \Though that isn't saying such a machine couldn't be invented." \I believe you|that is if you got on its trail," returned Ned, and there was warm admiration in his voice. -
Inside This Issue: Blotter
PR ST STD US Postage PAID Cañon City, CO Permit 594 “2003 AFSPC Best Large Wing PA Office” Thursday, Dec. 16, 2004 Peterson Air Force Base, Colorado Vol. 48 No. 49 Photo by Dennis Plummer Photo by Airman Mandy Weightman Photo by Robb Lingley Photo by Robb Lingley Inside This Issue: Blotter ... 23 At Your Service ... 16 Snow Call 556-SNOW SPACE OBSERVER 2 Thursday, Dec. 16, 2004 FROM THE TOP Wing commander sends message of gratitude By Brig. Gen. Richard E. Webber 21st Space Wing commander As this year comes to an end, Michele and I wish all of you a joyful holiday season. We are humbled by your sacrifices made by your families as you work long hours or deploy far from home. Our families are the source of support that enables us to serve with pride and enthusiasm and defend the democratic ideals of our great coun- try. During this holiday season, our thoughts and prayers are with them and with you. Americans are grateful for your selfless service. You have earned their trust and support through your courage bravery and sacrifice. And, simply put, I am honored to serve with you. The entire nation is grateful for your service and sacrifices that allow us to celebrate the holidays in freedom and security. Photo by Staff Sgt. Sue Crawford I am proud of each of the more than 6,000 men and women of Thanks to Capt. Amy Sufak, 21st Space Wing Public Affairs officer, a photo of Senior the 21st Space Wing and I thank you for your dedicated com- Airman Shawn Clements now dons the Patriot Family Holiday Tree at the Peterson Air mitment to our great nation.