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Author: Geoffrey J Banker Publisher: ISBN: Category : Languages : en Pages :
Book Description
It is shown that a transient Green's function can be obtained through correlations of concurrent recordings of a diffuse acoustic ambient noise field at two locations. A discussion of the history, motivation, and mathematical background of this method, "noise interferometry", is presented. The idea is demonstrated through modeling and tested using field measurements collected in December 2012 near the Florida Keys. The field experiment made use of concurrent ambient noise recordings at three locations using moored receivers placed near the bottom. The focus here is on a receiver pair separated horizontally by approximately 5 km, with the goal of showing that the estimated Green's function is suitable for tomographic inversion. In agreement with expectations based on theory, it is shown that by summing many realizations of the correlation function an approximation to the Green's function can be retrieved. The estimated Green's function is favorably compared with simulations performed with the MMPE acoustic model.
Author: Geoffrey J Banker Publisher: ISBN: Category : Languages : en Pages :
Book Description
It is shown that a transient Green's function can be obtained through correlations of concurrent recordings of a diffuse acoustic ambient noise field at two locations. A discussion of the history, motivation, and mathematical background of this method, "noise interferometry", is presented. The idea is demonstrated through modeling and tested using field measurements collected in December 2012 near the Florida Keys. The field experiment made use of concurrent ambient noise recordings at three locations using moored receivers placed near the bottom. The focus here is on a receiver pair separated horizontally by approximately 5 km, with the goal of showing that the estimated Green's function is suitable for tomographic inversion. In agreement with expectations based on theory, it is shown that by summing many realizations of the correlation function an approximation to the Green's function can be retrieved. The estimated Green's function is favorably compared with simulations performed with the MMPE acoustic model.
Author: Maged Marghany Publisher: BoD – Books on Demand ISBN: 9535124439 Category : Science Languages : en Pages : 420
Book Description
Nowadays, the innovation in space technologies creates a new trend for the Earth observation and monitoring from space. This book contains high quality and compressive work on both microwave and optical remote sensing applications. This book is divided into five sections: (i) remote sensing for biomass estimation, (ii) remote sensing-based glacier studies, (iii) remote sensing for coastal and ocean applications, (iv) sewage leaks and environment disasters, and (v) remote sensing image processing. Each chapter offers an opportunity to expand the knowledge about various remote sensing techniques and persuade researchers to deliver new research novelty for environment studies.
Author: Stuart Bradley Publisher: CRC Press ISBN: 9781420005288 Category : Technology & Engineering Languages : en Pages : 296
Book Description
Sonic Detection and Ranging (SODAR) systems and Radio Acoustic Sounding Systems (RASS) use sound waves to determine wind speed, wind direction, and turbulent character of the atmosphere. They are increasingly used for environmental and scientific applications such as analyzing ground-level pollution dispersion and monitoring conditions affecting wind energy generation. However, until now there have been no reliable references on SODAR and RASS for practitioners in the field as well as non-experts who wish to understand and implement this technology to their own applications. Authored by an internationally known expert in the design and use of SODAR/RASS technology, Atmospheric Acoustic Remote Sensing: Principles and Applications systematically explains the underlying science, principles, and operational aspects of acoustic radars. Abundant diagrams and figures, including eight pages of full-color images, enhance clear guidelines and tools for handling calibration, error, equipment, hardware, sampling, and data analysis. The final chapter explores applications in environmental research, boundary layer research, wind power and loading, complex terrain, and sound speed profiles. Atmospheric Acoustic Remote Sensing offers SODAR and RASS users as well as general remote sensing practitioners, environmental scientists, and engineers a straightforward guide for using SODARs to perform wind measurements and data analysis for scientific, environmental, or alternative monitoring applications.
Author: Josselin Garnier Publisher: Cambridge University Press ISBN: 110713563X Category : Computers Languages : en Pages : 307
Book Description
This multidisciplinary book provides a systematic introduction to the analysis of passive sensor array imaging using ambient noise sources.
Author: Sagar Pal Singal Publisher: Springer ISBN: 3540707433 Category : Science Languages : en Pages : 592
Book Description
This book, which is divided into three parts, gives a state-of-the-art report on technical developments in instrumentation and on theoretical advancements in acoustic remote sensing. It explains the utilization of acoustic techniques in studies related to the structure of the lower atmosphere and oceans and discusses various atmospheric and oceanic applications. The potential and limitations of acoustic remote sensing are also described. This book will be useful to researchers, graduate students, and teachers interested in the structure of the atmosphere and oceans.
Author: Chiara Colombero Publisher: ISBN: 9783039437344 Category : Languages : en Pages : 318
Book Description
The Special Issue is focused on recent and upcoming advances in the combined application of remote sensing and applied geophysics. Applied geophysics analyzes the distribution of physical properties in the subsurface for a wide range of geological, engineering, and environmental applications at different scales. Seismic, electrical, magnetic, and electromagnetic methods are among the most applied and well-established geophysical techniques. These methods share the advantages of being non-invasive and exploring wide areas of investigation with respect to conventional methods (e.g., drilling). Geophysical surveys are usually carried out deploying or moving the appropriate instrumentation directly on the ground surface. However, recent technological advances have resulting in the development of innovative acquisition systems becoming more typical of the remote sensing community (e.g., airborne surveys). While applied geophysics mainly focuses on the subsurface, typical remote sensing techniques have the ability to accurately image the Earth's surface with high-resolution investigations carried out by means of terrestrial, airborne, or satellite-based platforms. The integration of surface and subsurface information is often crucial for several purposes, including the processing of geophysical data, the characterization and time-lapse monitoring of surface and near-surface targets, and the reconstruction of highly detailed and comprehensive 3D models of the investigated areas. Recent contributions showing the added value of surface reconstruction and/or monitoring in the processing, interpretation, and cross-comparison of geophysical techniques for archaeological, environmental, and engineering studies are collected in this book. Pioneering geophysical acquisitions by means of innovative remote systems are also presented.
Author: Nori Nakata Publisher: Cambridge University Press ISBN: 1108417086 Category : Nature Languages : en Pages : 373
Book Description
A comprehensive overview of seismic ambient noise, covering observations, physical origins, modelling, processing methods and applications in imaging and monitoring.
Author: E. Schanda Publisher: Springer Science & Business Media ISBN: 3642662366 Category : Science Languages : en Pages : 381
Book Description
The public's serious concern about the uncertainties and dangers of the conse quences of human activities on environmental quality demands policies to control the situation and to prevent its deterioration. But far-reaching decisions on the environmental policy are impaired or even made impossible as long as the relevant ecological relations are not sufficiently understood and large-scale quantitative information on the most important parameters is not available in sufficient quality and quantity. The techniques of remote sensing offer new ways of procuring data on natural phenomena with three main advantages - the large distance between sensor and object prevents interference with the environmental conditions to be measured, - the potentiality for large-scale and even global surveys yields a new dimension for the investigations of the environmental parameters, - the extremely wide, spectral range covered by the whole diversity of sensors discloses many properties of the environmental media not detectable within a single wave band (as e.g. the visible). These significant additions to the conventional methods of environmental studies and the particular qualification of several remote sensing methods for quantitative determination of the natural parameters makes this new investigation technique an important tool both to the scientists studying the ecological relationship and the administration in charge of the environmental planning and protection.
Author: Yuri Abrahamian Publisher: Springer Science & Business Media ISBN: 1441990259 Category : Science Languages : en Pages : 164
Book Description
Methods and Materials for Remote Sensing: Infrared Photo-Detectors, Radiometers and Arrays presents the basic principles and the guidelines for the design of IR and microwave radiometers intended for the detection of weak electromagnetic signals in a noisy background. Significant attention is paid in this book to the discussion of the origin of the noises and consideration of the physical factors limiting the sensitivity of photo sensors. The physico-chemical properties of narrow-band semiconductors, which are the basic photosensitive materials for the microwave and IR radiometry, are discussed. Also described are the methods for growing the single crystals, epitaxial films and arrays from solid solutions of these compounds for the application in photosensitive detectors. The main goal of Methods and Materials for Remote Sensing: Infrared Photo-Detectors, Radiometers and Arrays is to present the entire material from the unifying physical viewpoint, which will be helpful for the designers of photo-detecting devices, and professionals contributing in various areas of remote sensing.
Author: Geoffrey J Banker
Author: Geoffrey J Banker
Author: Maged Marghany
Author: Stuart Bradley
Author: Josselin Garnier
Author: Sagar Pal Singal
Author: Chiara Colombero
Author: 
Author: Nori Nakata
Author: E. Schanda
Author: Yuri Abrahamian