Video Experimental Relacionado
Updated: Jun 4, 2026
06:55
Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
Published on: August 5, 2016
Se ramifica la falla Splay a lo largo de la zona de subducción de Nankai
Jin-Oh Park1, Tetsuro Tsuru, Shuichi Kodaira
1Institute for Frontier Research on Earth Evolution, Japan Marine Science and Technology Center, Yokosuka 237-0061, Japan. jopark@jamstec.go.jp
Science (New York, N.Y.)
|August 17, 2002
Resumen
Se identificaron fallas de dispersión de inmersión abrupta en la zona de subducción de Nankai, originadas en el límite de la placa. Estas fallas pueden desempeñar un papel clave en la adaptación de la tensión del terremoto de magnitud 8.1 de Tonankai.
Área de la Ciencia:
- La geofísica es la geofísica.
- Sismología Sismología.
- La tectónica es la tectónica.
Sus antecedentes:
- La zona de subducción de Nankai es una región sísmicamente activa propensa a grandes terremotos.
- La comprensión de las estructuras de fallas es crucial para la evaluación de riesgos sísmicos.
Objetivo del estudio:
- Para investigar la presencia y las características de las fallas de esparcimiento en el área de ruptura del terremoto de Tonankai.
- Determinar el papel de estas fallas en la acomodación de la tensión sísmica.
Principales métodos:
- Análisis de los perfiles de reflexión sísmica.
- Identificación de las geometrías de falla y su relación con el límite de la placa.
Principales resultados:
- En la zona de ruptura se observaron fallas de esparcimiento que se sumergen abruptamente hacia la tierra.
- Estas fallas se inician en la interfaz del límite de la placa a una profundidad de ~ 10 km.
- Las fallas se extienden a través de la corteza superior, hacia tierra del eje del canal.
Conclusiones:
- Las fallas de dispersión son una característica estructural significativa en la zona de subducción de Nankai.
- El deslizamiento en estas fallas activas es un mecanismo potencial para acomodar la deformación elástica.
- Este hallazgo tiene implicaciones para la comprensión de los procesos de ruptura de terremotos y el riesgo sísmico.
Videos de Conceptos Relacionados
02:50Nuclear Fission
Many heavier elements with smaller binding energies per nucleon can decompose into more stable elements that have intermediate mass numbers and larger binding energies per nucleon—that is, mass numbers and binding energies per nucleon that are closer to the “peak” of the binding energy graph near 56. Sometimes neutrons are also produced. This decomposition of a large nucleus into smaller pieces is called fission. The breaking is rather random with the formation of a large number of different...
02:37Restarting Stalled Replication Forks
DNA replication is initiated at sites containing predefined DNA sequences known as origins of replication. DNA is unwound at these sites by the minichromosome maintenance (MCM) helicase and other factors such as Cdc45 and the associated GINS complex.The unwound single strands are protected by replication protein A (RPA) until DNA polymerase starts synthesizing DNA at the 5’ end of the strand in the same direction as the replication fork. To prevent the replication fork from falling apart, a...
01:11P-N junction
A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
01:20Shearing Strain
The shearing strain represents a cubic element's angular change when subjected to shearing stress. This type of stress can transform a cube into an oblique parallelepiped without influencing normal strains. The cubic element experiences a significant transformation when exposed solely to shearing stress. Its shape alters from a perfect cube into a rhomboid, clearly demonstrating the effect of shearing strain. The degree of this strain is considered positive if it reduces the angle between the...
01:18Fault Types
When analyzing a single line-to-ground fault from phase A to ground at a three-phase bus, it is important to consider the fault impedance. This impedance is zero for a bolted fault, equal to the arc impedance for an arcing fault, and represents the total fault impedance for a transmission-line insulator flashover. To derive sequence and phase currents, fault conditions are translated from the phase domain to the sequence domain.
For line-to-line faults occurring between phases B and C, the...
For line-to-line faults occurring between phases B and C, the...
01:23Lumber Defects
Lumber defects, which can affect both the appearance and structural integrity of wood, include a variety of growth and manufacturing flaws. Growth defects such as knots and knotholes occur where branches were once attached to the tree trunk, with knotholes forming when these knots fall out. Other natural defects include decay and insect damage, which compromise the wood's strength and durability.
Shakes are minor fractures that run along or across the wood's annual rings, while wane is...
Shakes are minor fractures that run along or across the wood's annual rings, while wane is...