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Infrasound Monitoring for Atmospheric Studies
The use of infrasound to monitor the atmosphere has, like infrasound itself, gone largely unheard of through the years. But it has many applications, and it is about time that a book is being devoted to this fascinating subject. Our own involvement with infrasound occurred as graduate students of Prof. William Donn, who had established an infrasound array at the Lamont-Doherty Geological Observatory (now the Lamont-Doherty Earth Observatory) of Columbia University. It was a natural outgrowth of another major activity at Lamont, using seismic waves to explore the Earth’s interior. Both the atmosphere and the solid Earth feature velocity (seismic or acoustic) gradients in the vertical which act to refract the respective waves. The refraction in turn allows one to calculate the respective background structure in these mediums, indirectly exploring locations that are hard to observe otherwise. Monitoring these signals also allows one to discover various phenomena, both natural and man-made (some of which have military applications).
Infrasound Propagation in an Anisotropic Fluctuating Atmosphere
This book presents the theory and results of experimental studies of the propagation of infrasound waves in a real atmosphere with its inherent fine-scale layered structure of wind speed and temperature. It is motivated by the fact that the statistical characteristics of anisotropic (or layered) fluctuations of meteorological fields, the horizontal scales of which significantly exceed their vertical scales, have been very poorly studied compared to those of locally isotropic turbulence in the inertial range of scales. This book addresses this lacuna by developing a theory of the formation of anisotropic inhomogeneities of the atmosphere in a random field of internal gravity waves and vortex structures. Using theory, it explains numerous experimental data depicting the influence of the fine structure of the atmosphere on the propagation of infrasound waves from pulsed sources. The text will appeal to specialists in the fields of acoustics and optics of the atmosphere, remote sensing of the atmosphere, the dynamics of internal waves, nonlinear acoustics, and infrasound monitoring of explosions and natural hazards.
Manufacturing Engineering and Automation II
Selected, peer reviewed papers from the 2012 International Conference on Manufacturing Engineering and Automation (ICMEA 2012), November 16-18, 2012, Guangzhou, China
Extreme Environmental Events
Extreme Environmental Events is an authoritative single source for understanding and applying the basic tenets of complexity and systems theory, as well as the tools and measures for analyzing complex systems, to the prediction, monitoring, and evaluation of major natural phenomena affecting life on earth. These phenomena are often highly destructive, and include earthquakes, tsunamis, volcanoes, climate change,, and weather. Early warning, damage, and the immediate response of human populations to these phenomena are also covered from the point of view of complexity and nonlinear systems. In 61 authoritative, state-of-the art articles, world experts in each field apply such tools and concepts as fractals, cellular automata, solitons game theory, network theory, and statistical physics to an understanding of these complex geophysical phenomena.
Infrasound Monitoring for Atmospheric Studies
Since the publication of the first volume “Infrasound monitoring for atmospheric studies” published in 2010, significant advances were achieved in the fields of engineering, propagation modelling, and atmospheric remote sensing methods. The global infrasound network, which consists of the International Monitoring Network (IMS) for nuclear test ban verification completed by an increasing number of regional cluster arrays deployed around the globe, has evidenced an unprecedented potential for detecting, locating and characterizing various natural and man-made sources. In recent years, infrasound has evolved into a broad interdisciplinary field encompassing academic disciplines of geophysic...
Acoustics Today
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REDEMPTION OF THE DAMNED: VOL. 1 AERIAL PHENOMENA
UNRAVELLING AERIAL MYSTERIES OF THE PAST Charles Fort published his first and most influential book, The Book of the Damned, a century ago in 1919, collecting together many historical reports of strange aerial phenomena. Since the birth of the UFO controversy in 1947 Fort’s writings have been cited in countless books and web pages. Yet this is the first time in a hundred years that researchers have systematically verified the sources and content of every one of these oft-recycled stories, correcting many errors, placing each case in its historical context, and submitting it to a careful scientific investigation in an attempt to find a conventional answer. What were these reported phenomena? Is it possible to find non-exotic explanations? With the advantage of modern knowledge, methods, and resources, in most cases the answer proves to be yes. Some of the solutions found may shock the general reader and surprise even specialists. Yet in the end a few well-documented events remain unexplained.
Science
Since Jan. 1901 the official proceedings and most of the papers of the American Association for the Advancement of Science have been included in Science.
Annual Report
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