22 research outputs found

    Annual Meeting of the Lunar Exploration Analysis Group : November 1-3, 2016, Columbia, Maryland

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    The meeting goals are three-fold: 1. Integrate the perspectives and interests of the different stakeholders (science, engineering, government, and private sector) to explore common goals of lunar exploration. 2. Use the results of recent and ongoing missions to examine how science enables exploration and exploration enables science. 3. Provide a forum for community updates and input into the issues that affect lunar science and exploration.NASA Lunar Exploration Analysis Group (LEAG) Lunar and Planetary Institute (LPI) Universities Space Research Association (USRA) National Aeronautics and Space Administration (NASA) NASA Solar System Exploration Research Virtual Institute (SSERVI)Organizing Committee, Clive Neal, Convener, University of Notre Dame, Stephen Mackwell, Convener, Universities Space Research Associatio

    Evaluation of Geologic CO\u3csub\u3e2\u3c/sub\u3e Sequestration Potential and CO\u3csub\u3e2\u3c/sub\u3e Enhanced Oil Recovery in Kentucky

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    Kentucky gets approximately 95 percent of its electricity from coal-fired power plants, which produce significant amounts of carbon dioxide (CO2). In 2005, Kentucky coal-fired plants vented 102.8 million short tons of CO2 into the atmosphere. The economic vitality of the state will be affected by its ability to develop and apply a portfolio of technologies that will mitigate input of CO2 into the atmosphere. One technology that has the potential to assist in this challenge is geologic carbon storage, which captures CO2 at point sources and injects it into deep rock strata that can store it for tens of thousands of years and longer. Previous studies suggest that Kentucky has the capacity to store up to 1 billion tons of CO2 in underground strata. By necessity, the capacity calculations are high-level estimates, and consequently, actual capacity remains unproved and even speculative. In addition, other factors such as infrastructure, engineering, and economic and regulatory policy will affect the viability of geologic carbon storage in the state. This report is divided into five chapters, each addressing specific technical aspects pertinent to geologic carbon storage, which is the overarching theme. Chapter 1 is an introduction and overview of geologic carbon storage and the data needed to evaluate its potential. Chapter 2 is a geologic evaluation of the potential to use CO2 for enhanced oil recovery. Chapter 3 is an evaluation of subsurface formation-water geochemistry and implications for CO2 sequestration. Chapter 4 is an evaluation of CO2 storage potential with an emphasis along some of the state\u27s major river corridors. Chapter 5 is a geologic evaluation of CO2 storage potential for nominated coal-to-liquids (gasification) sites

    Applied Fracture Mechanics

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    The book "Applied Fracture Mechanics" presents a collection of articles on application of fracture mechanics methods to materials science, medicine, and engineering. In thirteen chapters, a wide range of topics is discussed, including strength of biological tissues, safety of nuclear reactor components, fatigue effects in pipelines, environmental effects on fracture among others. In addition, the book presents mathematical and computational methods underlying the fracture mechanics applications, and also developments in statistical modeling of fatigue. The work presented in this book will be useful, effective, and beneficial to mechanical engineers, civil engineers, and material scientists from industry, research, and education

    Advances in Planetary Geology

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    Advances in Planetary Geology is a new series intended to serve the planetary geology community with a form for quick and thorough communications. There are no set lists of acceptable topics or formats, and submitted manuscripts will not undergo a formal review. All submissions should be in a camera ready form, preferably spaced, and submitted to the editor

    NASA thesaurus. Volume 3: Definitions

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    Publication of NASA Thesaurus definitions began with Supplement 1 to the 1985 NASA Thesaurus. The definitions given here represent the complete file of over 3,200 definitions, complimented by nearly 1,000 use references. Definitions of more common or general scientific terms are given a NASA slant if one exists. Certain terms are not defined as a matter of policy: common names, chemical elements, specific models of computers, and nontechnical terms. The NASA Thesaurus predates by a number of years the systematic effort to define terms, therefore not all Thesaurus terms have been defined. Nevertheless, definitions of older terms are continually being added. The following data are provided for each entry: term in uppercase/lowercase form, definition, source, and year the term (not the definition) was added to the NASA Thesaurus. The NASA History Office is the authority for capitalization in satellite and spacecraft names. Definitions with no source given were constructed by lexicographers at the NASA Scientific and Technical Information (STI) Facility who rely on the following sources for their information: experts in the field, literature searches from the NASA STI database, and specialized references

    Lunar Polar Volatiles : August 7-9, 2018, Laurel, Maryland

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    Topics: Volatile Sources for the Lunar Poles; Transport of Volatiles at the Poles and Processes that Influence Distribution; Composition of Lunar Polar Volatiles: It’s More Than Just Water!; Distribution Differences Between the Surface and Deeper Volatiles; and Future Steps.Convener, Kathleen Mandt, John Hopkins University, Applied Physics Laboratory ; Science Organizing Committee, Kathleen Mandt, Johns Hopkins University, Applied Physics Laboratory, William Farrell, NASA Goddard Space Flight Center, Elizabeth Fisher, Brown University, Andrew Jordan, University of New Hampshire, Rachel Klima, Johns Hopkins University, Applied Physics Laboratory, Paul Lucey, University of Hawaii.PARTIAL CONTENTS: The Effect of Topography on the Transport of Volatiles at the Lunar Poles: Application to Neon / C. Grava, J.-Y. Chaufray, E. Mazarico, M. A. Siegler, and M. Benna--Polar Volatiles Exploration in Peary Crater Enabled by NASA’s Kilopower Project / J. E. Gruener, D. B. Bussey, S. J. Lawrence, and L. S. Mason--Lunar Polar Volatiles: Current Understanding, Recent Discoveries, and Future Exploration / P. O. Hayne--A Review of Diurnally-Varying Lunar Hydration Signatures / A. R. Hendrix--Volatile Retention In and Near Lunar PSRs Through Molecular Adsorption / C. A. Hibbitts--Groundbased Observations of the Lunar Surface at 3 Microns: Implications for the Presence of / Mobile Water for Polar Ice Supply / C. I. Honniball, P. G. Lucey, H. M. Kaluna, S. Li, L. Sun, and E. Costello

    Kinematic Plate Models of the Neoproterozoic

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    Plate tectonic reconstructions traditionally use a combination of palaeomagnetic and geological data to model the changing positions of continents throughout Earth history. Plate reconstructions are particularly useful because they provide a framework for testing a range of hypotheses pertaining to climate, seawater chemistry, evolutionary patterns and the relationship between mantle and surface. During the Mesozoic and Cenozoic these are underpinned by data from the ocean basins that preserve relative plate motions, and data from hotspot chains and tomographic imaging of subducted slabs within the mantle to constrain absolute plate motions. For earlier times, neither ocean basins nor subducted slabs are preserved to assist with constructing plate models. Previously published plate models are usually built around times that have high quality palaeomagnetic data and between these times, the motion of continental crust is usually interpolated. Alternatively, regional tectonic models are developed predominantly from using geological data but without integrating the model into a global context. Additionally, until now all global plate models for the Neoproterozoic model only describe the configurations of continental blocks and do not explicitly consider the spatial and temporal evolution of plate boundaries. In this thesis, I present the first topological plate model of the Neoproterozoic that traces the dynamic evolution and interaction of tectonic plates, which encompass the entire earth. This model synthesises new geological and palaeomagnetic data, along with conclusions drawn from kinematic data to help discriminate competing continental configurations of the western area of the Neoproterozoic supercontinent, Rodinia. The thesis concludes by analysing the supercontinent cycle from 1000 to 0 Ma, by extracting the rift length, subduction zone length and perimeter-to-area ratio of continental crust to better understand the long-term evolution of our planet

    Geology of Southern California

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