Download or read book Ejecta Studies written by W. A. Roberts and published by . This book was released on 1963 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project included 146 ejecta measurement stations encircling ground zero at eight radial distances ranging from 373 to 1,707 meters. The twenty-four sampling lines were spaced at fifteen-degree intervals. Data presented were recovered from stations located at radial dis tances of 640, 853, 1,067, 1,280, and 1,707 meters. An attempt will be made to recover data at stations located closer to ground zero at a later time. Preliminary analysis of ejecta data indicates that a real density varies inversely as distance raised to the 3.64 power. Circumfer ential variation of areal density is about a factor of 30 at the 1,707 meter radial distance, a factor of 10 at the 1,280 meter radial dis tance, and a factor of 7 at the 853 meter radial distance. (Author).
Download or read book Distal Impact Ejecta Layers written by Billy P. Glass and published by Springer Science & Business Media. This book was released on 2012-12-14 with total page 723 pages. Available in PDF, EPUB and Kindle. Book excerpt: Impact cratering is an important geological process on all solid planetary bodies, and, in the case of Earth, may have had major climatic and biological effects. Most terrestrial impact craters have been erased or modified beyond recognition. However, major impacts throw ejecta over large areas of the Earth's surface. Recognition of these impact ejecta layers can help fill in the gaps in the terrestrial cratering record and at the same time provide direct correlation between major impacts and other geological events, such as climatic changes and mass extinctions. This book provides the first summary of known distal impact ejecta layers
Download or read book Middle Course II Cratering Series written by Kenneth E. Sprague and published by . This book was released on 1973 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book EJECTA STUDIES written by and published by . This book was released on 1962 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: One-hundred and forty-six ejecta measurement stations encircled ground zero at eight radial distances ranging from 373 to 1707 meters. The twenty-four sampling lines were spaced at fifteen-degree intervals. Data presented were recovered from stations located at radial distances of 640, 853, 1067, 1280, and 1707 meters. An attempt will be made to recover data at stations located closer to ground zero at a later time. Preliminary analysis of ejecta data indicates that areal density varies inversely as distance raised to the 3.64 power. Circumferential variation of areal density is about a factor of 30 at the 1707 meter radial distance, a factor of 10 at the 1280 meter radial distance, and a factor of 7 at the 853 meter radial distance. Cursory treatment is given to several related subjects, including outer limit of base surge dust deposit, volumetric ejecta densities, locations of natural missiles and impact craters, and the outer limit of ballistic debris. One case of missile damage to a reinforced concrete structure is documented. Raw data are included in the appendix. (auth).
Download or read book COSPAR Space Research written by M. J. Rycroft and published by Elsevier. This book was released on 2013-10-22 with total page 633 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cospar Space Research, Volume XIX covers the proceedings of the Open Meetings of the Working Groups on Physical Sciences of the 21st Plenary Meeting of COSPAR, held in Innsbruck, Austria, from May 29 to June 10, 1978, focusing on the developments in space research. The contributions concentrate on remote sensing, middle atmosphere, ionosphere, magnetosphere, and materials science in space. The selection first offers information on global development of space research, including weather and climate, material sciences in space, planets, sun, stars, magnetosphere, and high energy astrophysics. The book then takes a look at the spectral characteristics of surface phenomena and their impact on the design of an optoelectronic multispectral system; use of weather satellite data in the evaluation of water resources; and atmospheric and surface radiation balance as identified from satellite data. The compilation discusses the assimilation of non-simultaneous satellite and conventional meteorological data using statistical weights; annual variation and variability of meteorological parameters in the stratosphere and mesosphere; and physical properties affecting the existence of small particles in the mesosphere. The book also focuses on the determination of density scale-height profiles, geomagnetic effects in the exosphere, and gravity waves and tidal winds in the equatorial thermosphere. The selection is a dependable source of data for readers interested in space research.
Download or read book Ejecta Distribution Studies written by R. H. Carlson and published by . This book was released on 1964 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: For surface craters, 35 percent of the true crater mass was represented by ejecta, 40 percent by fallback, and 25 percent by compaction and distortion of the medium surrounding the crater. Ejected material represented about 88 percent of the apparent crater mass. The ratio of ejecta mass to true crater mass increased with burst depth, reaching a maximum of 0.58 at a burst depth of 1.2 feet. The fallback mass was approximately equal to the ejecta mass at a burst depth of about 6.4 feet.
Download or read book Asteroids III written by William Frederick Bottke and published by University of Arizona Press. This book was released on 2002-01-01 with total page 818 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two hundred years after the first asteroid was discovered, asteroids can no longer be considered mere points of light in the sky. Spacecraft missions, advanced Earth-based observation techniques, and state-of-the-art numerical models are continually revealing the detailed shapes, structures, geological properties, and orbital characteristics of these smaller denizens of our solar system. This volume brings together the latest information obtained by spacecraft combined with astronomical observations and theoretical modeling, to present our best current understanding of asteroids and the clues they reveal for the origin an,d evolution of the solar system. This collective knowledge, prepared by a team of more than one hundred international authorities on asteroids, includes new insights into asteroid-meteorite connections, possible relationships with comets, and the hazards posed by asteroids colliding with Earth. The book's contents include reports on surveys based on remote observation and summaries of physical properties; results of in situ exploration; studies of dynamical, collisional, cosmochemical, and weathering evolutionary processes; and discussions of asteroid families and the relationships between asteroids and other solar system bodies. Two previous Space Science Series volumes have established standards for research into asteroids. Asteroids III carries that tradition forward in a book that will stand as the definitive source on its subject for the next decade.
Download or read book Environmental Research Papers written by and published by . This book was released on 1975 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies in Volcanology written by Howel Williams and published by . This book was released on 1968 with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Accretion of Extraterrestrial Matter Throughout Earth s History written by Bernhard Peucker-Ehrenbrink and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: Every year Earth is bombarded with about 40,000 tons of extraterrestrial material. This includes microscopic cosmic dust particles shed by comets and asteroids in outer space, meteorites, as well as large comets and asteroids that have led to catastrophic events in the geologic past. Originally considered only a curiosity, extraterrestrial matter found on Earth provides the only samples we have from comets, asteroids and other planets. Only recently mankind has started to actively collect extraterrestrial matter in space (Apollo program, Stardust mission) rather than to wait for its delivery to Earth. Still, most of our knowledge of the origin and evolution of our solar system is based on careful studies of meteorites, cosmic dust, and traces of large impact events in the geologic record such as the mass extinction that terminated the Cretaceous Period and led to the extinction of the dinosaurs. This book summarizes our current knowledge of the properties, origin, orbital evolution and accretion mechanism of extraterrestrial matter accreted on Earth and sheds light on accretion processes and fluxes in the geologic past. The chapters in the first part of the book are arranged in order to follow extraterrestrial matter from its origin in space, its orbital evolution on its way to Earth, its interaction with the Earth magnetosphere and atmosphere to its more or less violent collision with the Earth's surface. In the second part of the book several chapters deal with the present?day flux of cosmic dust and meteorites to Earth. Finally, several chapters deal with the reconstruction of the accretion history of extraterrestrial matter on Earth, starting with the most recent geologic past and ending with the very early, violent accretion period shortly after the formation of Earth, Moon and other solid planets in our solar system.
Download or read book Army Research and Development written by and published by . This book was released on 1973 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Studies of Ejecta Dynamics During Vertical and Oblique Impacts written by Jennifer Liisa Bath Anderson and published by . This book was released on 2004 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1993 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mars written by Hugh H. Kieffer and published by University of Arizona Press. This book was released on 2018-01-30 with total page 1517 pages. Available in PDF, EPUB and Kindle. Book excerpt: The planet Mars has been a subject of wonder for millennia, as attested by its place in mythology, by later speculation about its canals, and by the scientific and public excitement over the Viking mission. Although the scientific literature about the planet is voluminous, no comprehensive treatment of the results of modern spacecraft exploration has yet been made available. This volume fills that gap by providing a summary of what is presently known about Mars and identifying many puzzles such as polar cap variance, occurrence of dust storms, and the possible location of water. The introductory chapter cites questions, controversies, and milestones in the study of Mars, and also includes an annotated book list, basic data about the planet, and a guide to Martian seasons. A chapter on telescopic observation credits the contributions made by many amateurs that have advanced our knowledge of variations observed on Mars. A chapter on spacecraft exploration, by an American and a Russian author who have participated in all Mars missions, includes a revelation of an additional Soviet attempt. Twenty-nine technical articles cover geophysics; bedrock geology; surface; atmosphere; exosphere and magnetic field; and climate history. Two chapters address the search for life on Mars; three concluding chapters consider the Martian satellites. An indispensable reference for scientists, Mars will also serve as a complete sourcebook for serious amateur astronomers.
Download or read book Celebrating 60 Years written by Los Alamos National Laboratory and published by . This book was released on 2003 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accompanying CD-ROM ... "contains a PDF version of 'Celebrating 60 years"--Page [8] of booklet.
Download or read book Impact Markers in the Stratigraphic Record written by Christian Koeberl and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present volume is an outcome of the scientific programme “Response of the Earth System to Impact Processes” (IMPACT) by the European Science Foundation (ESF). The ESF is an association of 67 national member organizations devoted to scientific research in 24 European countries. The IMPACT programme is aimed at understanding meteorite impact processes and their effects on the Earth System. Launched in 1998 for duration of 5 years, 15 ESF member organizations now participate in this programme, which will officially end in late 2003, although the momentum gained for European (and worldwide) impact research will be carried on in other programs and organizations. The programme deals with all aspects of meteorite impact research and operates through workshops, exchange programs, publications, and short courses. This particular book is the third in an informal series on “Impact Studies”, which is published by Springer and intended to go beyond the ESF IMPACT programme by providing a venue for high quality (and peer-reviewed) monographs and conference and workshop proceedings on general topics connected to impact cratering and related research. th The 6 ESF-Impact workshop “Impact makers in the stratigraphic record” was held in Granada (Spain) on May 2001, with about sixty scientists from Europe, Taiwan, and North America attending the workshop. During the workshop 30 oral, 32 poster, and 3 keynote contributions were presented.
Download or read book U S Government Research Reports written by and published by . This book was released on 1964 with total page 2180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
