Earth, Atmospheric, and Planetary Sciences (Course 12)
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Copyright Notice
COPYRIGHT NOTICE The following document is subject to copyright agreements. The attached copy is provided for your personal use on the understanding that you will not distribute it and that you will not include it in other published documents. Dr Evert Hoek Evert Hoek Consulting Engineer Inc. 3034 Edgemont Boulevard P.O. Box 75516 North Vancouver, B.C. Canada V7R 4X1 Email: [email protected] Support Decision Criteria for Tunnels in Fault Zones Andreas Goricki, Nikos Rachaniotis, Evert Hoek, Paul Marinos, Stefanos Tsotsos and Wulf Schubert Proceedings of the 55th Geomechanics Colloquium, Salsberg Published in Felsbau, 24/5, 2006. Goricki et al. (2006) 22 Support decision criteria for tunnels in fault zones Support Decision Criteria for Tunnels in Fault Zones Abstract A procedure for the application of designed support measures for tunnelling in fault zones with squeezing potential is presented in this paper. Criteria for the support decision based on quantitative parameters are defined. These criteria provide an objective basis for the assignment of the designed support categories to the actual ground conditions. Besides the explanation of the criteria and the implementation into the general geomechanical design process an example from the Egnatia Odos project in Greece is given. The Metsovo tunnel is located in a geomechanical difficult area including fault zones and a major thrust zone with high overburden. Focusing on squeezing sections of this tunnel project the application of the support decision criteria is shown. Introduction Tunnelling in fault zones in general is associated with frequently changing ground and ground water conditions together with large and occasionally long lasting displacements. -
Study of the Geoeffectiveness of Coronal Mass Ejections
Study of the geoeffectiveness of coronal mass ejections Katarzyna Bronarska Jagiellonian University Faculty of Physics, Astronomy and Applied Computer Science Astronomical Observatory PhD thesis written under the supervision of dr hab. Grzegorz Michaªek September 2018 Acknowledgements Pragn¦ wyrazi¢ gª¦bok¡ wdzi¦czno±¢ moim rodzicom oraz m¦»owi, bez których »aden z moich sukcesów nie byªby mo»liwy. Chc¦ równie» podzi¦kowa¢ mojemu promotorowi, doktorowi hab. Grzogorzowi Michaªkowi, za ci¡gªe wsparcie i nieocenion¡ pomoc. I would like to express my deepest gratitude to my parents and my husband, without whom none of my successes would be possible. I would like to thank my superior, dr hab. Grzegorz Michaªek for continuous support and invaluable help. Abstract This dissertation is an attempt to investigate geoeectiveness of CMEs. The study was focused on two important aspects regarding the prediction of space weather. Firstly, it was presented relationship between energetic phenomena on the Sun and CMEs producing solar energetic particles. Scientic considerations demonstrated that very narrow CMEs can generate low energy particles (energies below 1 MeV) in the Earth's vicinity without other activity on the Sun. It was also shown that SEP events associated with active regions from eastern longitudes have to be complex to produce SEP events at Earth. On the other hand, SEP particles originating from mid-longitudes (30<latitude<70) on the west side of solar disk can be also associated with the least complex active regions. Secondly, two phenomena aecting CMEs detection in coronagraphs have been dened. During the study the detection eciency of LASCO coronagraphs was evaluated. It was shown that the detection eciency of the LASCO coronagraphs with typical data availability is sucient to record all potentially geoeective CMEs. -
Continuous Magnetic Reconnection at the Earth's Magnetopause
Why Study Magnetic Reconnection? Fundamental Process • Sun: Solar flares, Flare loops, CMEs • Interplanetary Space • Planetary Magnetosphere: solar wind plasma entry, causes Aurora Ultimate goal of the project – observe magnetic reconnection by satellite in situ through predictions of reconnection site in model Regions of the Geosphere • Solar wind: made up of plasma particles (pressure causes field distortion) • Bow shock: shock wave preceding Earth’s magnetic field • Magnetosheath: region of shocked plasma (higher density) • Magnetopause: Boundary between solar wind/geosphere • Cusp region: region with open field lines and direct solar wind access to upper atmosphere Magnetic Reconnection • Two antiparallel magnetized plasmas, separated by current sheet • Occurs in a very small area (Diffusion Region) At the Earth’s Magnetopause: • IMF reconnects with Earth’s magnetic field across the magnetopause • Southward IMF reconnects near equator • Forms open field lines, which convect backwards to cusp Instrument Overview Polar –TIMAS Wind - SWE instrument • Outside • Measures 3D velocity geospheric distributions influence • Focused on H+ data • Provides solar wind data Magnetic Reconnection Observed in the Cusp Magnetopause Fast Particle Magnetospheric Slow Particle • Color spectrogram Cusp • Measures energy and intensity (flux) of protons from solar wind Solar Wind in cusp with respect to time and latitude • Latitude changes due to convection Color spectrogram produced by IDL program written by mentor Methodology to Determine Where Reconnection -
Extraformational Sediment Recycling on Mars Kenneth S
Research Paper GEOSPHERE Extraformational sediment recycling on Mars Kenneth S. Edgett1, Steven G. Banham2, Kristen A. Bennett3, Lauren A. Edgar3, Christopher S. Edwards4, Alberto G. Fairén5,6, Christopher M. Fedo7, Deirdra M. Fey1, James B. Garvin8, John P. Grotzinger9, Sanjeev Gupta2, Marie J. Henderson10, Christopher H. House11, Nicolas Mangold12, GEOSPHERE, v. 16, no. 6 Scott M. McLennan13, Horton E. Newsom14, Scott K. Rowland15, Kirsten L. Siebach16, Lucy Thompson17, Scott J. VanBommel18, Roger C. Wiens19, 20 20 https://doi.org/10.1130/GES02244.1 Rebecca M.E. Williams , and R. Aileen Yingst 1Malin Space Science Systems, P.O. Box 910148, San Diego, California 92191-0148, USA 2Department of Earth Science and Engineering, Imperial College London, South Kensington, London SW7 2AZ, UK 19 figures; 1 set of supplemental files 3U.S. Geological Survey, Astrogeology Science Center, 2255 N. Gemini Drive, Flagstaff, Arizona 86001, USA 4Department of Astronomy and Planetary Science, Northern Arizona University, P.O. Box 6010, Flagstaff, Arizona 86011, USA CORRESPONDENCE: [email protected] 5Department of Planetology and Habitability, Centro de Astrobiología (CSIC-INTA), M-108, km 4, 28850 Madrid, Spain 6Department of Astronomy, Cornell University, Ithaca, New York 14853, USA 7 CITATION: Edgett, K.S., Banham, S.G., Bennett, K.A., Department of Earth and Planetary Sciences, The University of Tennessee, 1621 Cumberland Avenue, 602 Strong Hall, Knoxville, Tennessee 37996-1410, USA 8 Edgar, L.A., Edwards, C.S., Fairén, A.G., Fedo, C.M., National Aeronautics -
Directed Reading Packet
Directed Reading Packet Geosphere Unit Name:_______________________________ Teacher: _________________ Period: ____ Section 1.2: A View of Earth This section explains the physical structure of Earth. Reading Strategy Predicting Before you read, predict the meaning of the vocabulary terms. After you read, revise your definition if your prediction was incorrect. For more information on this Reading Strategy, see the Reading and Study Skills in the Skills and Reference Handbook at the end of your textbook. Vocabulary Term Before You Read After You Read hydrosphere a. b. atmosphere c. d. geosphere e. f. biosphere g. h. core i. j. mantle k. l. crust m. n. Earth’s Major Spheres 1. Earth can be thought of as consisting of four major spheres: the , , , and . Match each term to its description. Term Description 2. hydrosphere a. all life-forms on Earth 3. atmosphere b. composed of the core, mantle, and crust 4. geosphere c. dense, heavy inner sphere of Earth 5. biosphere d. thin outside layer of Earth’s surface 6. core e. the water portion of Earth 7. mantle f. the gaseous envelope around Earth 8. crust g. located between the crust and core of Earth 9. What does each letter in the diagram below represent? A. B. C. D. E. F. G. H. I. J. Plate Tectonics 10. Is the following sentence true or false? Forces such as weathering and erosion that work to wear away high points and flatten out Earth’s surface are called constructive forces. 11. Circle the letter of each type of constructive force. a. gravity b. -
Session B-1: Model Building in Planetary Science and the NGSS
Model Building in Planetary Science and the NGSS Dr. Eric Hawker IMSA Science Faculty March 4th , 2016 Planetary Science • Planets are complicated dynamic systems. • There are many planetary attributes that interact with each other. • The dynamic changes that planets go through are driven by energy. Model Building • Usually these are not physical models! • A set of concepts that describe a system. • NGSS Science and Engineering Practices: Developing and Using Models: Modeling in 9–12 builds on K–8 experiences and progresses to using, synthesizing, and developing models to predict and show relationships among variables between systems and their components in the natural and designed world(s). • Develop a model based on evidence to illustrate the relationships between systems or between components of a system. (HS-ESS2-1), (HS-ESS2-3),(HS-ESS2-6) • Use a model to provide mechanistic accounts of phenomena. (HS- ESS2-4) Model Building • HS-ESS2-1. Develop a model to illustrate how Earth’s internal and surface processes operate at different spatial and temporal scales to form continental and ocean-floor features. • HS-ESS2-3. Develop a model based on evidence of Earth’s interior to describe the cycling of matter by thermal convection. • HS-ESS2-6. Develop a quantitative model to describe the cycling of carbon among the hydrosphere, atmosphere, geosphere, and biosphere. Heat from Planetary Formation • The initial solar nebula of dust and gas that the Solar System formed from had a lot of gravitational potential energy. • This gravitational potential energy was turned into thermal energy (heat) during planetary formation. Atacama Large Millimeter Array image of HL Tauri Radioactivity • When the planets formed, radioactive isotopes such as uranium, thorium, and potassium were trapped deep underground. -
Geosphere Process Report for the Safety Assessment SR-Site Assessment Safety the for Report Process Geosphere Technical Report TR-10-48
Geosphere process report for the safety assessment SR-Site Technical Report TR-10-48 Geosphere process report for the safety assessment SR-Site Svensk Kärnbränslehantering AB November 2010 Svensk Kärnbränslehantering AB Swedish Nuclear Fuel and Waste Management Co Box 250, SE-101 24 Stockholm Phone +46 8 459 84 00 TR-10-48 CM Gruppen AB, Bromma, 2010 CM Gruppen ISSN 1404-0344 SKB TR-10-48 Geosphere process report for the safety assessment SR-Site Svensk Kärnbränslehantering AB November 2010 A pdf version of this document can be downloaded from www.skb.se 2011-10. Preface This document compiles information on processes in the geosphere relevant for long-term safety of a KBS-3 repository. It supports the safety assessment SR-Site, which will support the licence application for a final repository in Sweden. The work of compiling this report has been led by Kristina Skagius, Kemakta Konsult AB. She has also been the main editor of the report. The following persons have had the main responsibilities for specific subject areas: Harald Hökmark, Clay Technology AB (thermal and mechanical processes), Jan-Olof Selroos, SKB (hydrogeological and transport processes), and Ignasi Puigdomenech and Birgitta Kalinowski, SKB (geochemical processes). In addition, a number of experts have contributed to specific parts of the report as listed in Section 1.3. The report has been reviewed by Jordi Bruno, Amphos, Spain; John Cosgrove, Imperial College, UK; Thomas Doe, Golder Associates Inc, USA; Alan Hooper, Alan Hooper Consulting Limited, UK; John Hudson, Rock Engineering Consultants, UK; Ivars Neretnieks, Royal Institute of Technology, Sweden; Mike Thorne, Mike Thorne and Associates Ltd, UK; and Per-Eric Ahlström, SKB. -
Raplee Ridge Monocline and Thrust Fault Imaged Using Inverse Boundary Element Modeling and ALSM Data
Journal of Structural Geology 32 (2010) 45–58 Contents lists available at ScienceDirect Journal of Structural Geology journal homepage: www.elsevier.com/locate/jsg Structural geometry of Raplee Ridge monocline and thrust fault imaged using inverse Boundary Element Modeling and ALSM data G.E. Hilley*, I. Mynatt, D.D. Pollard Department of Geological and Environmental Sciences, Stanford University, Stanford, CA 94305-2115, USA article info abstract Article history: We model the Raplee Ridge monocline in southwest Utah, where Airborne Laser Swath Mapping (ALSM) Received 16 September 2008 topographic data define the geometry of exposed marker layers within this fold. The spatial extent of five Received in revised form surfaces were mapped using the ALSM data, elevations were extracted from the topography, and points 30 April 2009 on these surfaces were used to infer the underlying fault geometry and remote strain conditions. First, Accepted 29 June 2009 we compare elevations extracted from the ALSM data to the publicly available National Elevation Dataset Available online 8 July 2009 10-m DEM (Digital Elevation Model; NED-10) and 30-m DEM (NED-30). While the spatial resolution of the NED datasets was too coarse to locate the surfaces accurately, the elevations extracted at points Keywords: w Monocline spaced 50 m apart from each mapped surface yield similar values to the ALSM data. Next, we used Boundary element model a Boundary Element Model (BEM) to infer the geometry of the underlying fault and the remote strain Airborne laser swath mapping tensor that is most consistent with the deformation recorded by strata exposed within the fold. -
Dips Tutorial.Pdf
Dips Plotting, Analysis and Presentation of Structural Data Using Spherical Projection Techniques User’s Guide 1989 - 2002 Rocscience Inc. Table of Contents i Table of Contents Introduction 1 About this Manual ....................................................................................... 1 Quick Tour of Dips 3 EXAMPLE.DIP File....................................................................................... 3 Pole Plot....................................................................................................... 5 Convention .............................................................................................. 6 Legend..................................................................................................... 6 Scatter Plot .................................................................................................. 7 Contour Plot ................................................................................................ 8 Weighted Contour Plot............................................................................. 9 Contour Options ...................................................................................... 9 Stereonet Options.................................................................................. 10 Rosette Plot ............................................................................................... 11 Rosette Applications.............................................................................. 12 Weighted Rosette Plot.......................................................................... -
Development of a Local Empirical Model of Ionospheric Total Electron
www.nature.com/scientificreports OPEN Development of a local empirical model of ionospheric total electron content (TEC) and its application for studying solar‑ionospheric efects Pantea Davoudifar1,2*, Keihanak Rowshan Tabari1, Amir Abbas Eslami Shafgh1, Ali Ajabshirizadeh3, Zahra Bagheri4, Fakhredin Akbarian Tork Abad2 & Milad Shayan1 Regular and irregular variations in total electron content(TEC) are one of the most signifcant observables in ionosphericstudies. During the solar cycle 24, the variability of ionosphere isstudied using global positioning system derived TEC at amid‑latitude station, Tehran (35.70N, 51.33E). Based on solar radiofux and seasonal and local time‑dependent features of TEC values, asemi‑ empirical model is developed to represent its monthly/hourlymean values. Observed values of TEC and the results of oursemi‑empirical model then are compared with estimated values of astandard plasmasphere–ionosphere model. The outcome of this modelis an expected mean TEC value considering the monthly/hourly regularefects of solar origin. Thus, it is possible to use it formonitoring irregular efects induced by solar events. As a result,the connection of TEC variations with solar activities are studiedfor the case of coronal mass ejections accompanying extremesolar fares. TEC response to solar fares of class X is wellreproduced by this model. Our resulting values show that the mostpowerful fares (i.e. class X) induce a variation of more than 20percent in daily TEC extent. In the Earth’s ionosphere, the variability of space weather is easily refected in TEC. As the total number of electrons is measured along a vertical column of one square meter cross-section (1 TEC Unit (TECU) = 1 × 1016 electrons m−2 ) from the height of a GPS satellite (∼ 20, 000 km ) to the receiver, thus TEC char- acterizes variations in both ionosphere and plasmasphere 1. -
Fracture Cleavage'' in the Duluth Complex, Northeastern Minnesota
Downloaded from gsabulletin.gsapubs.org on August 9, 2013 Geological Society of America Bulletin ''Fracture cleavage'' in the Duluth Complex, northeastern Minnesota M. E. FOSTER and P. J. HUDLESTON Geological Society of America Bulletin 1986;97, no. 1;85-96 doi: 10.1130/0016-7606(1986)97<85:FCITDC>2.0.CO;2 Email alerting services click www.gsapubs.org/cgi/alerts to receive free e-mail alerts when new articles cite this article Subscribe click www.gsapubs.org/subscriptions/ to subscribe to Geological Society of America Bulletin Permission request click http://www.geosociety.org/pubs/copyrt.htm#gsa to contact GSA Copyright not claimed on content prepared wholly by U.S. government employees within scope of their employment. Individual scientists are hereby granted permission, without fees or further requests to GSA, to use a single figure, a single table, and/or a brief paragraph of text in subsequent works and to make unlimited copies of items in GSA's journals for noncommercial use in classrooms to further education and science. This file may not be posted to any Web site, but authors may post the abstracts only of their articles on their own or their organization's Web site providing the posting includes a reference to the article's full citation. GSA provides this and other forums for the presentation of diverse opinions and positions by scientists worldwide, regardless of their race, citizenship, gender, religion, or political viewpoint. Opinions presented in this publication do not reflect official positions of the Society. Notes Geological Society of America Downloaded from gsabulletin.gsapubs.org on August 9, 2013 "Fracture cleavage" in the Duluth Complex, northeastern Minnesota M. -
Space Weather Effects Studies in Azerbaijan: Potential Impacts on Geosphere, Biosphere and Periodic Comets
SENS 2007 Third Scientific Conference with International Participation SPACE, ECOLOGY, NANOTECHNOLOGY, SAFETY 27–29 June 2007, Varna, Bulgaria SPACE WEATHER EFFECTS STUDIES IN AZERBAIJAN: POTENTIAL IMPACTS ON GEOSPHERE, BIOSPHERE AND PERIODIC COMETS Elchin Babayev, Arif Hashimov, Ayyub Guliyev, Famil Mustafa, Peter Shustarev, Abbas Asgarov Azerbaijan National Academy of Sciences 10, Istiglaliyyat Street, Baku, AZ-1001, the Republic of Azerbaijan е-mail: [email protected] Key words: space weather, power failures, sudden cardiac death, traffic accidents, periodic comets Abstract. For getting more and better knowledge about the physical links between major space weather sources (solar, geomagnetic and cosmic ray activities) and short- and long-term effects on technical-engineering systems and biosphere, particularly, human life and health state in middle latitudes, we are conducting complex (theoretical, experimental and statistical) space weather studies in the Azerbaijan National Academy of Sciences. Part of main and recently obtained results of these collaborative investigations of potential space weather effects on functioning of power supply systems, sudden cardiac death mortality as well as an influence of changes of heliogeophysical conditions on dynamics of traffic accidents is briefly provided in this review paper. An influence of solar activity on changes of brightness curves of periodic comets 29P/Schwassmann-Wachmann and 1P/Halley is investigated on the basis of data with about 1300 and 5900 estimations of brightness and using improved by authors calculations for visual magnitude of comets. 1. Introduction According to the US National Space Weather Programme (1995), space weather refers to the “conditions on the Sun and in the solar wind, magnetosphere, ionosphere, and thermosphere that can influence the performance and reliability of space-borne and ground-based technological systems and can endanger human life or health”.