Video Experimental Relacionado
Updated: Nov 17, 2025

09:19
Measuring the Structure, Composition, and Change of Underwater Environments with Large-area Imaging
Published on: April 18, 2025
1.1K
Imágenes sísmicas de la corteza usando canciones de ballenas de aleta
Václav M Kuna1,2, John L Nábělek3
1College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, USA. kuna@ig.cas.cz.
Resumen
Los cantos de las ballenas, detectados por sismómetros del fondo del océano, revelan las propiedades sísmicas de la corteza terrestre. Este enfoque bioacústico ofrece un nuevo método para la exploración geofísica.
Área de la Ciencia:
- La bioacústica marina
- Sismología
- La oceanografía
Sus antecedentes:
- Las vocalizaciones de las ballenas son poderosas señales oceánicas de larga distancia.
- Los sismómetros del fondo del océano registran las ondas sísmicas y el ruido ambiental.
Objetivo del estudio:
- Para analizar las canciones de ballenas de aleta grabadas por sismómetros en el fondo del océano.
- Utilizar señales bioacústicas para estudios sísmicos de la corteza.
Principales métodos:
- Análisis de canciones de ballenas de aleta grabadas en estaciones sísmicas del fondo del océano.
- Identificación de las señales transmitidas por el agua y reflejadas o refractadas por la corteza.
- Modelado sísmico para restringir las propiedades de la corteza.
Principales resultados:
- Las canciones de ballenas de aleta contienen señales transmitidas por el agua y reflejadas / refractadas por la corteza.
- El espesor restringido y la velocidad sísmica del sedimento oceánico y el sótano basáltico.
- Velocidad determinada de las ondas P de la corteza inferior gabróica.
Conclusiones:
- Las llamadas de ballenas pueden complementar las encuestas sísmicas tradicionales.
- Los datos bioacústicos proporcionan información valiosa sobre la estructura de la corteza oceánica.
- Este método ofrece una alternativa no invasiva para los estudios geofísicos.
Videos de Conceptos Relacionados
Perception of Sound Waves
5.1K
The human ear is not equally sensitive to all frequencies in the audible range. It may perceive sound waves with the same pressure but different frequencies as having different loudness. Moreover, the perception of sound waves depends on the health of an individual's ears, which decays with age. The health of one's ears may also be affected by regular exposure to loud noises.
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
5.1K
Imaging Studies II: Ultrasonography
137
IntroductionUltrasonography, or renal ultrasound, is a noninvasive medical imaging technique that uses high-frequency sound waves to visualize the kidneys, ureters, bladder, and surrounding tissues.Indications for Urinary System UltrasonographyUrinary system ultrasonography is indicated in various clinical scenarios, such as:Kidney Stones (Urolithiasis): To detect and monitor the size and presence of kidney or urinary tract stones.Hydronephrosis: To assess the dilation of the renal pelvis and...
137
Ultrasonography
7.0K
Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called...
During an ultrasonography procedure, a handheld device called...
7.0K
Sound Waves: Resonance
2.9K
Resonance is produced depending on the boundary conditions imposed on a wave. Resonance can be produced in a string under tension with symmetrical boundary conditions (i.e., has a node at each end). A node is defined as a fixed point where the string does not move. The symmetrical boundary conditions result in some frequencies resonating and producing standing waves, while other frequencies interfere destructively. Sound waves can resonate in a hollow tube, and the frequencies of the sound...
2.9K
Sound as Pressure Waves
2.8K
Sound waves, which are longitudinal waves, can be modeled as the displacement amplitude varying as a function of the spatial and temporal coordinates. As a column of the medium is displaced, its successive columns are also displaced. As the successive displacements differ relatively, a pressure difference with the surrounding pressure is created. The gauge pressure varies across the medium.
The pressure fluctuation depends on the difference in displacements between the successive points in the...
The pressure fluctuation depends on the difference in displacements between the successive points in the...
2.8K

