Related Experiment Video
Updated: Aug 10, 2025
11:34
Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
10.4K
Sound Range AE as a Tool for Diagnostics of Large Technical and Natural Objects
Yuri Marapulets1, Alexandra Solodchuk1, Olga Lukovenkova1
1Laboratory of Acoustic Research, Institute of Cosmophysical Research and Radio Wave Propagation FEB RAS, Kamchatka Region, Elizovskiy District, Mirnaya Str. 7., 684034 Paratunka, Russia.
Sensors (Basel, Switzerland)
|February 11, 2023
Summary
This study introduces a system for analyzing acoustic emission signals to monitor geological stability and predict earthquakes. It enables precise source localization using multi-component sensors and advanced algorithms for noisy environments.
Area of Science:
- Geophysics
- Seismology
- Acoustics
Background:
- Acoustic emission (AE) in the sound frequency range is crucial for monitoring the stability of geological structures and infrastructure.
- Detecting rock deformation anomalies preceding earthquakes is vital for seismic hazard assessment.
- Existing methods require robust systems for accurate AE source localization and signal analysis.
Purpose of the Study:
- To develop and describe a system for recording, processing, and analyzing acoustic emission signals.
- To enable the determination of the direction to AE sources using a single multi-component sensor.
- To present the application of AE for detecting rock deformation preceding earthquakes.
Main Methods:
- Utilizing multi-component acoustic sensors for AE recording and directivity determination.
- Implementing algorithms for AE pulse detection in noisy backgrounds.
- Applying the Adaptive Matching Pursuit algorithm for AE signal structure analysis.
- Developing a method for AE source direction detection using multi-component sensors.
Main Results:
- A system capable of determining the direction to an AE source with a single multi-component sensor was developed.
- Effective algorithms for AE pulse detection and analysis in noisy conditions were employed.
- The system successfully detected intensified rock deformations associated with earthquake preparation in Kamchatka.
Conclusions:
- Sound range acoustic emission analysis is a viable method for monitoring geological stability.
- The developed system and algorithms enhance the capability to detect precursor signals of seismic events.
- This technology holds promise for improving earthquake preparedness and hazard mitigation strategies.
Related Concept Videos
00:59Range
11.8K
The range is one of the measures of variation. It can be defined as the difference between a dataset's highest and lowest values. For example, in the study of seven 16-ounce soda cans, the filled volume of soda was measured, thus producing the following amount (in ounces) of soda:
15.9; 16.1; 15.2; 14.8; 15.8; 15.9; 16.0; 15.5
Measurements of the amount of soda in a 16-ounce can vary since different subjects record these measurements or since the exact amount - 16 ounces of liquid, was not...
15.9; 16.1; 15.2; 14.8; 15.8; 15.9; 16.0; 15.5
Measurements of the amount of soda in a 16-ounce can vary since different subjects record these measurements or since the exact amount - 16 ounces of liquid, was not...
11.8K
01:26Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
269
Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
269
01:20Atomic Emission Spectroscopy: Overview
2.4K
Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
2.4K
01:06Echo
549
The human ear cannot distinguish between two sources of sound if they happen to reach within a specific time interval, typically 0.1 seconds apart. More than this, and they are perceived as separate sources.
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case,...
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case,...
549
00:53Sound Intensity Level
4.2K
Humans perceive sound by hearing. The human ear helps sound waves reach the brain, which then interprets the waves and creates the perception of hearing. The loudness of the environment in which a person is located determines whether they can distinguish between different sound sources.
The human ear can perceive an extensive range of sound intensity, necessitating the use of the logarithmic scale to define a physical quantity—the intensity level. It is a ratio of two intensities and...
The human ear can perceive an extensive range of sound intensity, necessitating the use of the logarithmic scale to define a physical quantity—the intensity level. It is a ratio of two intensities and...
4.2K
01:30Electronic Distance Measuring Instruments
74
Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short...
74