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Related Concept Videos

Tidal Forces01:06

Tidal Forces

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The origin of Earth's ocean tides has been a subject of continuous investigation for over 2000 years. However, the work of Newton is considered to be the beginning of the proper understanding of the phenomenon. Ocean tides are the result of gravitational tidal forces. These same tidal forces are present in any astronomical body; they are responsible for the internal heat that creates the volcanic activity on Io, one of Jupiter's moons, and the breakup of stars that get too close to...
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Fluid Pressure over Flat Plate of Constant Width01:05

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When a body is submerged in water, it experiences fluid pressure acting normal on its surface and distributed over its area. For better design structures, it is crucial to determine the magnitude and location of the resultant force acting on the surface. In the case of a rectangular plate of constant width submerged in water, the pressure increases with depth, resulting in a linearly varying trapezoidal pressure distribution from the upper to the lower edge of the plate.
The resultant force...
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Fluid Pressure over Curved Plate of Constant Width01:12

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When a curved plate of constant width is submerged in a liquid, the pressure acting normal to the plate varies continuously both in magnitude and direction. Calculating the magnitude and location of the resultant force at a point is often challenging for such cases. One of the methods to determine the resultant force and its location involves separately calculating the horizontal and vertical components of the resultant force. This complex calculation can be simplified by representing the...
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Plotting of Topographic Maps01:29

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Topographic maps represent the Earth's surface features using contour lines, which connect points of equal elevation to create a two-dimensional representation of three-dimensional terrain. Creating a topographic map requires a systematic approach.Begin by plotting a scaled grid and marking intersections corresponding to the survey's elevation data points. Assign elevation values at these intersections to build the base map. Next, determine contour levels using a consistent contour interval,...
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Fluid Pressure over Flat Plate of Variable Width01:02

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When a flat plate is submerged in a fluid, the fluid exerts pressure on the plate. This pressure can lead to many different phenomena, including drag and buoyancy. To understand the behavior of the fluid over a flat plate of variable width, it is essential to analyze the distribution of the pressure exerted.
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Relation Between the Distributed Load and Shear01:23

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Understanding the relationship between the distributed load and shear force in structural analysis is crucial for analyzing beams subjected to various loading conditions. Consider the case of a beam experiencing a distributed load, two concentrated loads, and a couple moment.
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Related Experiment Video

Updated: Jul 26, 2025

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
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Undersea mountains help slicken tectonic plates.

Paul Voosen

    Science (New York, N.Y.)
    |June 22, 2023
    PubMed
    Summary

    Submerged seamounts are crucial for slow slip earthquakes in subduction zones. Their presence influences the seismic behavior of these tectonic boundaries.

    Area of Science:

    • Geophysics
    • Tectonics
    • Seismology

    Background:

    • Subduction zones are critical tectonic plate boundaries where oceanic plates descend beneath continental plates.
    • Seamounts, underwater mountains, are often found on oceanic plates and can influence geological processes.
    • Slow slip earthquakes are a type of seismic event characterized by gradual plate movement over days to months.

    Discussion:

    • The interaction between subducting seamounts and the overriding plate can alter stress accumulation and release patterns.
    • Seamount geometry and composition significantly influence the frictional properties at the plate interface.
    • The presence of seamounts can lead to localized variations in slip behavior, promoting or inhibiting slow slip events.

    Key Insights:

    • Swallowed seamounts are identified as key factors controlling the occurrence and characteristics of slow slip earthquakes.

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  • Subduction of seamounts can facilitate the transition from stable sliding to episodic tremor and slow slip events.
  • Geophysical modeling reveals that seamount topography directly impacts the spatial distribution and duration of slow slip.

    • Outlook:

    • Further research on seamount subduction is essential for improving earthquake hazard assessments in subduction zones.
    • Integrating seamount data into seismic models can enhance our understanding of earthquake cycles.
    • Investigating seamount influence on seismic activity provides insights into fundamental plate tectonics and earthquake physics.