Video Experimental Relacionado
Updated: Jun 3, 2026
07:39
The Role of Fabric in Frictional Properties of Phyllosilicate-Rich Tectonic Faults
Published on: November 6, 2021
Hay evidencia de acoplamiento mecánico y una fuerte corteza inferior india debajo del sur del Tíbet
Alex Copley1, Jean-Philippe Avouac, Brian P Wernicke
1Tectonics Observatory, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California 91125, USA. acc41@cam.ac.uk
Nature
|April 9, 2011
Resumen
La meseta tibetana es la meseta tibetana.
Área de la Ciencia:
- La geofísica es la geofísica.
- La tectónica es la tectónica.
- Geología Geología Geología.
Sus antecedentes:
- La relación entre la deformación de la superficie y los procesos tectónicos profundos en las cadenas montañosas sigue sin estar clara.
- La corteza superior de la meseta tibetana a menudo se considera desacoplada de la corteza india debido a un canal de baja viscosidad.
Objetivo del estudio:
- Para investigar el acoplamiento mecánico entre la corteza superior de la meseta tibetana y la corteza india que está por debajo.
- Reevaluar la hipótesis del "flujo de canales" bajo el sur del Tíbet.
Principales métodos:
- Análisis de los regímenes tectónicos contrastantes (deslizamiento de choque frente a fallas normales) en toda la meseta tibetana.
- Acoplamiento mecánico inferido basado en patrones de deformación observados.
Principales resultados:
- Un contraste en los regímenes tectónicos entre el norte (strike-slip) y el sur (fallas normales) del Tíbet requiere acoplamiento mecánico.
- Este acoplamiento contradice la presencia de un "flujo de canal" activo debajo del sur del Tíbet.
- La corteza india parece mantener su fuerza durante el empuje.
Conclusiones:
- La corteza india está mecánicamente acoplada a la corteza superior del sur del Tíbet.
- El modelo de "flujo de canal" puede no estar activo debajo del sur del Tíbet.
- Esto desafía los modelos existentes de la deformación de la litosfera continental y la evolución de la meseta tibetana.
Más Videos Relacionados
06:55Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
Published on: August 5, 2016
07:58Data Processing Methods for 3D Seismic Imaging of Subsurface Volcanoes: Applications to the Tarim Flood Basalt
Published on: August 7, 2017
Videos de Conceptos Relacionados
01:28Magnetostatic Boundary Conditions
An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...
01:20Elastic Strain Energy for Shearing Stresses
As discussed in previous lessons, strain energy in a material is the energy stored when it is elastically deformed, a concept crucial in materials science and mechanical engineering. This energy results from the internal work done against the cohesive forces within the material. When a material undergoes shearing stress and corresponding shearing strain, the strain energy density, which is the energy stored per unit volume, is calculated. Within the elastic limit, where the stress is...
01:23Coriolis Force
An accelerating particle experiences a force equal to the mass multiplied by the acceleration in an inertial frame of reference. Consider a particle in a non-inertial frame of reference, such as a sliding ball on a rotating table. The acceleration of the ball in this rotating reference frame is different than in the intertial frame, which modifies its equation of motion. The fictitious forces acting additionally on a rotating frame of reference alter Newton's Second Law expression. Centripetal...
01:13Cell-matrix's Response to Mechanical Forces
In animal cells, the extracellular matrix allows cells within tissues to withstand external stresses and transmits signals from the outside of the cell to the inside. The extracellular matrix is extensive, and its composition varies between different types of tissues. For example, the reticular fibers and ground substance make up the ECM in loose connective tissue, while collagen and bone minerals make up the ECM of bone tissue.
Anchoring junctions mechanically attach a cell to the...
Anchoring junctions mechanically attach a cell to the...
01:22Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)
Vicinal or three-bond coupling is commonly observed between protons attached to adjacent carbons. Here, nuclear spin information is primarily transferred via electron spin interactions between adjacent C‑H bond orbitals. This generally favors the antiparallel arrangement of spins, so 3J values are usually positive.
The extent of coupling depends on the C‑C bond length, the two H‑C‑C angles, any electron-withdrawing substituents, and the dihedral angle between the involved orbitals. The...
The extent of coupling depends on the C‑C bond length, the two H‑C‑C angles, any electron-withdrawing substituents, and the dihedral angle between the involved orbitals. The...
01:27Significance of Displacement Current
A displacement current is analogous to a real current in Ampère's law, participating in Ampère's law the same way as the usual conduction current. However, it is produced by a changing electric field. Displacement current is defined in terms of a time-varying electric field, and also has an associated displacement current density. By adding a term accounting for displacement current, Maxwell modified the existing Ampère's law, which is now called generalized Ampère's law.