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1. |
Long‐range space objectives |
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Eos, Transactions American Geophysical Union,
Volume 65,
Issue 41,
1984,
Page 745-745
L. J. Lanzerotti,
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PDF (146KB)
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摘要:
At the request of the National Aeronautics and Space Administration (NASA) the National Research Council's Space Science Board has undertaken a special study of the long‐term (post‐1985) objectives of U.S. research in the space sciences. The study will continue over approximately 2 years and will involve two to three summer sessions as well as disciplinary group meetings during the intervals between the summer sessions. This special study is intended to build upon and considerably extend the strategy reports in the various space science disciplines that the board has been involved in formulating over the past few years.In the first meeting of the entire study, held at Woods Hole, Mass., August 20–29, each of the disciplinary panels formulated a draft report on the present status of their sciences and the expected space science missions to the year 1995. These expected missions are based upon the science strategies as contained in the reports of the several committees of the Space Science Board. The individual task groups also developed, in a very preliminary fashion, scientific objectives and space science missions that might well be considered for implementation in the post‐1
ISSN:0002-8606
DOI:10.1029/EO065i041p00745-01
年代:1984
数据来源: WILEY
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2. |
What is mineral physics? |
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Eos, Transactions American Geophysical Union,
Volume 65,
Issue 41,
1984,
Page 746-746
Anonymous,
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PDF (140KB)
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摘要:
In the past the principal task of the mineralogist was simply to describe and classify physical, chemical, and structural properties of the remarkable variety of natural inorganic crystals. As this task was gradually accomplished for most species, however, mineralogists increasingly sought to identify physical and chemical principles that underly mineral formation and behavior and procedures that might lead to predictions of stability and properties of phases deep within the earth. Mineral physics, which has evolved during the past 2 decades, is thus the study of mineralogical problems through the application of the principles of condensed‐matter physics and chemistry.Mineral physics bridges gaps among a number of disciplines. Mineral physics is closely linked with traditional earth‐science fields, including solid‐earth geophysics, geochemistry, crystallography, petrology, and crystal chemistry. Close ties also exist with topics in ceramics, materials science, physical chemistry, high‐temperature and high‐pressure research, and solid‐state physics. The range of materials studied parallels the diversity of minerals themselves: elements, metal alloys, sulfides, halides, layer compounds, and zeolites, in addition to rock‐forming oxides and silicates, have been the focus of much study. Experiments on minerals and their analog compounds have intensified as new industrial applications have been found in the manufacture of lasers, high‐performance ceramics, molecular sieves, catalysts, and a wide variety of electr
ISSN:0002-8606
DOI:10.1029/EO065i041p00746-01
年代:1984
数据来源: WILEY
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3. |
Conservation of Water and Related Land Resources |
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Eos, Transactions American Geophysical Union,
Volume 65,
Issue 41,
1984,
Page 747-747
Lynton K. Caldwell,
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PDF (150KB)
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摘要:
The author was quite clear about the purpose of this book and clearly achieved his intent. In his preface, the author states, “The purpose of this book is to acquaint the reader with a broad understanding of the topics relevant to the management of the nation's water and related land resources.” The book is a product of the author's 20 years of work as a teacher, consultant, researcher, and student of watershed management and hydrology and has served as a text for a course entitled Soil and Water Conservation, which the author has taught at the State University of New York, College of Environmental Science and Forestry at Syracuse, New York. But it was also written with the intent to be of use “to informal students of water and land related resources on the national level as well.” The objectives of Black's course at Syracuse and its larger purpose define the scope of the book which, again in the author's words, have been “(1) to acquaint students with principles of soil and water conservation; (2) to stimulate an appreciation for an integrated, comprehensive approach to land management; (3) to illustrate the influence of institutional, economic, and cultural forces on the practice of soil and water conservation; and (4) to provide information, methods, and techniques by which soil and water conservation measures are applied to land, as well as the basis for predicting and evaluating results.” The book is written in straightforward nontechnical language and provides the reader with a set of references, a table of cases, a list of abbreviations, and an adequate index. It impresses this reviewer as a very well edited pi
ISSN:0002-8606
DOI:10.1029/EO065i041p00747-01
年代:1984
数据来源: WILEY
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4. |
Incoherent Scatter Radar User Workshop |
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Eos, Transactions American Geophysical Union,
Volume 65,
Issue 41,
1984,
Page 750-750
A. D. Richmond,
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PDF (145KB)
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摘要:
The incoherent scatter radar technique has developed over the years into one of the most powerful tools for investigating physical processes in the upper atmosphere. The National Science Foundation (NSF) now supports a chain of four incoherent scatter facilities at Sondrestromfjord (Greenland), Millstone Hill (Massachusetts), Arecibo (Puerto Rico), and Jicamarca (PERU). Six European nations support the EISCAT facility in northern Scandinavia, and France also has a radar at St. Santin. Recently, the organizations reponsible for each of the six radars agreed to participate in a centralized data base being established at the National Center for Atmospheric Research (NCAR) to make their data more readily accessible to the scientific community at large.
ISSN:0002-8606
DOI:10.1029/EO065i041p00750
年代:1984
数据来源: WILEY
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