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Related Concept Videos

Directional Terms01:14

Directional Terms

Directional terms are essential for describing the relative locations of different body structures. For instance, an anatomist might describe one band of tissue as "inferior to" another, or a physician might describe a tumor as "superficial to" a deeper body structure. These terms often use comparative terms in pairs to trace out the relative locations of one body part to another or descriptions of body tissues like the deeper ones from superficially present with reference to the body's upright...
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...
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...
Green’s Theorem01:27

Green’s Theorem

Green’s Theorem establishes a relationship between a line integral around a closed plane curve and a double integral over the region enclosed by that curve. It applies to a vector field F(x, y) = 〈P(x, y), Q(x, y)〉, where P and Q have continuous first partial derivatives on an open set containing the region.Let C be a positively oriented, simple, closed, piecewise smooth curve, and let R be the plane region bounded by C. Green’s Theorem states that\begin{equation*}\oint_C P\,dx+Q\,dy =\iint_R...
Extended Versions of Green’s Theorem01:27

Extended Versions of Green’s Theorem

Green’s Theorem connects the circulation of a vector field around a closed curve with the behavior of the field across the region enclosed by that curve. It provides a way to replace a line integral around a boundary with a double integral over the interior region, making it especially useful in plane geometry, fluid flow, and vector calculus.Although Green’s Theorem is often introduced using simple regions without gaps, it can also be applied to regions made from several simple parts. This...
Deep Sea Microbial Ecology01:18

Deep Sea Microbial Ecology

The deep ocean and its underlying sediments represent vast, largely unexplored microbial habitats that extend far beyond the sunlit photic zone. The photic (euphotic) zone typically spans the upper ~100–200 meters of pelagic waters in the open ocean, but its depth varies geographically and seasonally, where sufficient light supports photosynthetic life. Below this lies the deep sea, spanning roughly 1000–6000 meters (bathypelagic to abyssal zones), with deeper hadal trenches extending beyond...

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Related Experiment Video

Updated: Jun 29, 2026

Visualization of Flow Field Around a Vibrating Pipeline Within an Equilibrium Scour Hole
09:37

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Published on: August 26, 2019

Deep Western boundary current in the eastern Indian ocean.

B A Warren

    Science (New York, N.Y.)
    |April 1, 1977
    PubMed
    Summary

    Deep ocean circulation in the eastern Indian Ocean appears separate from the west. Recent observations confirm a narrow western boundary current supplying this region, with a significant volume transport.

    Area of Science:

    • Oceanography
    • Physical Oceanography
    • Indian Ocean Dynamics

    Background:

    • Historical temperature data suggest distinct deep circulation patterns in the eastern Indian Ocean compared to the west.
    • This implies a unique water supply mechanism for the eastern basin, potentially originating from the south.

    Purpose of the Study:

    • To investigate the hypothesized northward flow in the eastern Indian Ocean.
    • To confirm the existence and characteristics of a western boundary current along the Ninetyeast Ridge.

    Main Methods:

    • Analysis of historical temperature data.
    • Recent observational oceanographic data collection (details not specified in abstract).

    Main Results:

    • Observations confirm the existence of a narrow western boundary current along the Ninetyeast Ridge.

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    Published on: August 26, 2019

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  • The estimated volume transport of this current is approximately 4 x 10^6 cubic meters per second.

    • Conclusions:

    • The findings support the theory of a separate deep circulation system in the eastern Indian Ocean.
    • A distinct western boundary current plays a crucial role in supplying water to this region.