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Related Concept Videos

Uniform Depth Channel Flow01:27

Uniform Depth Channel Flow

Uniform depth channel flow keeps fluid depth consistent along channels such as irrigation canals. In natural channels, such as rivers, approximate uniform flow is often assumed. This condition occurs when the channel’s bottom slope matches the energy slope, balancing potential energy lost from gravity with head loss due to shear stress. This balance prevents depth changes along the channel length, resulting in a steady, uniform flow.Uniform flow in open channels with a constant cross-section...
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Kirchhoff's Current Law01:04

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In the realm of electrical engineering, physicist Gustav Robert Kirchhoff made a significant contribution in 1847 by introducing Kirchhoff's laws for electric circuit analysis. These laws, particularly Kirchhoff's Current Law (KCL), have become foundational principles in understanding and analyzing electrical circuits.
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Uniform Depth Channel Flow: Problem Solving01:18

Uniform Depth Channel Flow: Problem Solving

To calculate the flow rate for a trapezoidal channel, first, identify the bottom width, side slope, and flow depth of the channel. The cross-sectional area (A) corresponding to the depth of flow (y), channel bottom width (B), and side slope (θ) is determined by:Next, calculate the wetted perimeter, which includes the bottom width and the sloped side lengths in contact with the water. Using the values of the cross-sectional area and the wetted perimeter, determine the hydraulic radius by...
Rapidly Varying Flow01:24

Rapidly Varying Flow

Rapidly varying flow (RVF) in open channels is characterized by abrupt changes in flow depth over a short distance, with the rate of depth change relative to distance often approaching unity. These flows are inherently complex due to their transient and multi-dimensional nature, making exact analysis difficult. However, approximate solutions using simplified models provide valuable insights into their behavior.Key Features of Rapidly Varying FlowRVF is commonly observed in scenarios involving...
Eddy Currents01:25

Eddy Currents

Since eddy currents occur only in conductors, magnets can separate metals from other materials. For example, in a recycling center, trash is dumped in batches down a ramp, beneath which lies a powerful magnet. Conductors in the trash are slowed by eddy currents, while nonmetals in the trash move on, separating from the metals. This works for all metals, not just ferromagnetic ones.
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Related Experiment Video

Updated: Jul 12, 2026

Visualization of Productivity Zones Based on Nitrogen Mass Balance Model in Narragansett Bay, Rhode Island
05:04

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Published on: July 14, 2023

Bottom currents in the hudson canyon.

G H Keller, D Lambert, G Rowe

    Science (New York, N.Y.)
    |April 13, 1973
    PubMed
    Summary
    This summary is machine-generated.

    Bottom current measurements in Hudson Canyon show flow reversals. Despite short-term upcanyon transport, long-term sediment analysis indicates fine material moves seaward to the continental rise.

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    Area of Science:

    • Oceanography
    • Marine Geology
    • Benthic Ecology

    Background:

    • Hudson Canyon is a significant submarine feature on the continental margin.
    • Understanding sediment transport dynamics is crucial for coastal and deep-sea environments.

    Purpose of the Study:

    • To investigate the bottom current regime and sediment transport within Hudson Canyon.
    • To determine the net long-term transport direction of fine materials.

    Main Methods:

    • In-place measurements of bottom currents using current meters.
    • Analysis of sediment texture and organic carbon content.
    • Determination of benthic fauna-nutrient relationships.
    • Data collection using the submersible Alvin.

    Main Results:

    • Observed pronounced reversals in bottom current flow, both up and down the canyon.
    • Measured current velocities typically between 8-15 cm/s, with peaks up to 27 cm/s.
    • Short-term (2.5-day) current recordings indicated net upcanyon transport.
    • Integrated data suggest a long-term net transport of fine material through the canyon to the outer continental rise.

    Conclusions:

    • The bottom current regime in Hudson Canyon is complex, featuring significant flow reversals.
    • While short-term observations may suggest limited transport, long-term processes favor seaward movement of fine sediments.
    • Hudson Canyon acts as a conduit for fine material transport from the inner shelf to the deep sea continental rise.