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Showing 1 to 16 of 16 for “"infrasound"”.
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Infrasound as upper atmospheric monitor
… research. In this thesis, we revisit the use of infrasound as a passive remote sensing technique for the upper atmosphere. Signals from the Tungurahua volcano in Ecuador are used to investigate the behavior of the upper atmosphere. Depending on the atmospheric conditions, stratospheric, …
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Infrasound Propagation in Terrestrial Planetary Atmospheres
… understand the characteristics of atmospheric infrasound- below 0.1 Hz in particular- so as to improve the ability to detect their presence and sources. It is well-known that ambient attributes of an atmosphere, such as temperature, density, and composition, directly affect the propagation and …
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Effects of atmospheric profiles on local infrasound propagation
… of the natural environment on local (< 150 km) infrasound propagation is important, specifically for persistent infrastructure monitoring. Passively sensing the infrasound field provides useful information about the condition of infrastructure or any activity of interest in the infrasound …
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INSIGHTS INTO ERUPTION DYNAMICS AND SHALLOW PLUMBING SYSTEM OF MT. ETNA BY INFRASOUND AND SEISMIC SIGNALS
… signal, acoustic waves mainly in the range of infrasound are generated. In particular, infrasound activity is usually evidence of open conduit conditions and its quantification can provide information on explosive phenomena and source mechanism. A more comprehensive knowledge of the source …
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Tilting at Windmills: The power of expectations to influence symptom reporting by people exposed to wind turbine sound
… to exposure to sub-audible wind farm sound (infrasound) generated by wind turbines. A causal link between exposure and symptoms is not indicated by empirical evidence. Evidence indicates symptom reporting tends to arise in locations where residents are exposed to misinformation that wind …
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Solution of large scale elastic problems with the boundary element method : applications to infrasound and micro-seismicity generated by wind turbines
… dissertation. Results that combine the airborne infrasound and the soil surface waves generated by a WT are reported for the first time in the literature.
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Investigation on Mt. Etna dynamics by seismic and acoustic signals (August 2007-December 2010)
… source-mechanism of acoustic events at Mt. Etna, infrasound signals-continuously recorded by Istituto Nazionale di Geofisica and Vulcanologia- were analyzed in this thesis, jointly with some seismic signals. In particular, we focused on the period comprised between August 2007 and December 2010, …
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Sensing animal group behavior and bio-clutter in the ocean over continental shelf scales
… 2001, 2003 and 2006 experiments. Measurements of infrasound made during the 2004 Indian Ocean Tsunami event that occured on December 26, 2004 have suggested that large-scale tsunamis may produce deep-infrasonic signals that travel thousands of kilometers in the atmosphere. By developing an …
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DATA MINING TECHNIQUES ON VOLCANO MONITORING
… In particular, an application for clustering infrasound signals and another to index an thermal image database are presented.
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Interaction Of The Cyclonic Winds With The Infrasonic Signal Generated By A Large Maritime Storm
… 2010 and 2011 Atlantic hurricane seasons using infrasound arrays deployed in Florida, North and South Carolina, New Jersey, New York, and Connecticut. Observations of microbaroms which have not interacted strongly with the storm are in agreement with the prediction that the location of the …
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Observation and Modelling of Meter-Class Earth impacting Asteroids
… USG, Geostationary Lightening Mapper (GLM), and infrasound observations allow us to characterize the object as a 2-3 meter diameter object of unusually low albedo and fragile structure, comparable to the 2008 TC3 Almahata Sitta impactor. The second article presents an observing plan for an …
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Examination of natural background sources of radioactive noble gases with CTBT significance
… different monitoring technologies (seismic, infrasound, hydroacoustic, and radionuclide detection) are combined. The monitoring of radioactive xenon isotopes is one of the principal methods for the determination of the nuclear nature of an explosion. After an underground nuclear detonation …
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Ultrasonic Data Transmission and Steganography
<p>This project discusses the feasibility of using ultrasound to transmit data between computer systems, particularly computer systems that have been intentionally cut off from traditional networks for increased security. The goal of this project is to provide a synthesis of the current research …
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Description of Coherent Structures in the Atmospheric Boundary Layer By Model Reduction of the Surface Pressure
<p>The flow of coherent turbulent structures into a wind turbine is associated with vibrational blade excitation. Successful forecasting of such turbulent events for control system input would increase the lifetime of turbine components. The coherence of these features suggests description by model …