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Detection of Signal of Fire Source for Coal Spontaneous Combustion Applied with Acoustic Wave
Coal spontaneous combustion can cause a series of problems in terms of wasted resources, casualties, and environmental pollution. Accurate detection...
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Chaos and Wavefront Reversal for Long-Range Sound Propagation
AbstractLong-range sound propagation in the deep ocean is considered. Attention is concentrated on the procedure of acoustic wavefield refocusing by...
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Comprehensive Study of Inversion Methods for Sound Speed Profiles in the South China Sea
Traditional acquisition method of sound speed profiles using hydro-acoustic instruments is accurate but time-consuming and costly. To overcome this...
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Validity of matched-field source localization in under-ice shallow water
Underwater source localization, such as matched-field processing (MFP), triangulation, and waveguide invariant, have been extensively investigated in...
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Sequential GNSS-Acoustic seafloor point positioning with modeling of sound speed variation
Seafloor real-time positioning is important for the instantaneous detection of seafloor crustal motion, seismic activities, hydrological rapid...
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Monitoring of drill bit wear using sound and vibration signals analysis recorded during rock drilling operations
The drill bit has significant importance as a tool for breaking rocks in many industries such as mining, petroleum, and civil engineering. Its...
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Evolution of the Atmospheric Pressure Signal from the Tonga Volcano with Distance from It
AbstractA model of propagation of an atmospheric pressure signal from the eruption of the Hunga Tonga−Hunga Haʻapai volcano is proposed. This model...
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Mechanism of loud sound in a powerhouse during operation of a hydropower station based on microseismic monitoring
The main objective of this study is to investigate the mechanism of loud sound (LS) events encountered in a powerhouse during the operational period...
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Full-Bayes GNSS-A solutions for precise seafloor positioning with single uniform sound speed gradient layer assumption
A systematic analysis methodology for precise seafloor positioning using the GNSS-A has been constructed and implemented in the open-source software...
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Controls on the frequency content of near-source infrasound at open-vent volcanoes: a case study from Volcán Villarrica, Chile
Infrasound signals from open-vent volcanoes can contain information related to that volcano’s eruption dynamics and future activity. Studying a...
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Development and Application of a Portable Vibroseis Source for Acquisition and Analysis of Seismic Surface Wave Data
AbstractThe paper is devoted to development of a portable vibrating unit and study of its applicability in generating seismic waves. The solution to...
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Study on Joint Method of 3D Acoustic Emission Source Localization Simplex and Grid Search Scanning
Acoustic emission (AE) source localization is a fundamental element of rock fracture damage imaging. To improve the efficiency and accuracy of AE...
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Underwater Acoustic Signal Noise Reduction Based on a Fully Convolutional Encoder-Decoder Neural Network
Noise reduction analysis of signals is essential for modern underwater acoustic detection systems. The traditional noise reduction techniques...
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Denoising of Seismoelectric Logging Signal Based on Stochastic Resonance
Seismoelectric well logging is a new geophysical logging technique based on acoustic and electric conversion of double electric layers in porous...
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Sound speed profiles in high spatiotemporal resolution using multigrid three-dimensional variational method: a coastal experiment off northern Shandong Peninsula
It is essential to acquire sound speed profiles (SSPs) in high-precision spatiotemporal resolution for undersea acoustic activities. However,...
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A stochastic model for precise GNSS/acoustic underwater positioning based on transmission loss of signal intensity
Global navigation satellite system (GNSS)/acoustic (GNSS/A) underwater positioning technique is widely applied in the fields of marine scientific...
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Seabed Physical Parameter Research Based on Active-Source OBS Data in the Chukchi Sea Shelf of the Arctic
The acquisition of seabed physical parameters is one of the focuses of marine acoustic researches. However, the active-source ocean bottom...
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Improved Method for Acoustic Emission Source Location in Rocks Without Prior Information
Source location is a fundamental problem in acoustic emission (AE) monitoring. It usually requires configuring two pieces of prior information: wave...
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Seismic Signal Analysis Based on Adaptive Variational Mode Decomposition for High-speed Rail Seismic Waves
High-speed rails with determined length and load run for long periods at almost uniform speeds along fixed routes, constituting a new stable and...
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Accurate Source-Receiver Positioning Method for a High-Resolution Deep-Towed Multichannel Seismic Exploration System
The near-seabed multichannel seismic exploration systems have yielded remarkable successes in marine geological disaster assessment, marine gas...