Infrasound Monitoring for Atmospheric Studies - Tapa dura

9781402095078: Infrasound Monitoring for Atmospheric Studies

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ISBN 10: 1402095074 ISBN 13: 9781402095078

Editorial: Springer, 2010

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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).

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Rese�a del editor:

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).

Contraportada:

The infrasound field, the science of low-frequency acoustic waves, has developed into a broad interdisciplinary field encompassing academic disciplines of physics and recent technical and scientific developments.

The infrasound network of the International Monitoring Network (IMS) of the CTBT-Organization has demonstrated its capability for detecting and locating infrasonic sources such as meteorites, volcanic eruptions, earthquakes, auroras, mountain associated waves... Nearly 70% of the global network is now operational and regional cluster arrays are deployed around the globe. Systematic investigations into low-frequency acoustic signals have evidenced an unprecedented potential of the monitoring of infrasonic waves permanently generated by natural and man-made events. Furthermore, recent studies point out new insights on quantitative relationships between observables and atmospheric specifications, and therefore opening new fields into the mathematics of geophysical inverse problems for atmospheric remote sensing.

This volume reviews the most important areas of infrasound, with emphasis on the latest researches and applications, e.g. instrumentation, engineering, signal processing, source monitoring, propagation modeling, atmospheric dynamics, global changes, remote sensing methods.

Researchers and students will benefit from a comprehensive content of infrasound related topics, where both fundamental and applied topics are discussed by authors from international institutions, all experts in their fields.

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