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It is a curve which join highest point of the earth and lowest point of the the basis of this curve we can identify ocean reliefs as well as. The hypsographic (or hypsometric) curve is the representation of the statistical distribution of elevations over the entire world. In the areas which are covered. Hypsometry is the measurement of land elevation Bathymetry is the underwater equivalent. Hypsography of the Earth. Notice that A hypsometric curve is a histogram or cumulative distribution function of elevations in a geographical area.

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This gradual zone, which may be several hundred miles wide, is called the continental rise. If you prefer to suggest your own revision of the article, you can go to edit mode requires login.

Hypsovraphic, Harold, and Elizabeth Burton. Medwin, Herman, and Clarence Clay. Newer Post Older Post Home. The abyssal plain, which is the deepest, most level part of the ocean, is found where the continental rise ends, at a depth of about 4 kilometers 2. Neumann, Gerhard, and Willard Pierson. Underneath all of that water is a varied landscape of mountains, plains, trenches and slopes.

Posted by Leah Moore at 2: This would hypsogtaphic the case in crossing the Atlantic Ocean. Views Read Edit View history. On other planets within this solar system, elevations are typically unimodalowing to the lack of oceans on those bodies. This gives a person an idea of how the basin of the body of water is shaped. Differences in hypsometric curves between landscapes arise because the geomorphic processes that shape the landscape may be different.

These growing sheets of crust have the effect of forcing the distant continents farther apart, a process called sea-floor spreading. The curve can also be shown in non-dimensional or standardized form by scaling elevation and area by the maximum values. Beyond the abyssal plain, which may be several hundred kilometers wide, the ocean floor begins to ascend again with a gentle slope.


The curvw collected made possible complete bathymetric maps of the world’s oceans. We welcome suggested improvements to any of our articles. You can make it easier for us to review and, hopefully, publish your contribution by keeping a few points in mind.

The abyssal plain is dotted with thousands of small, extinct volcanoes called abyssal hills.

For the first time, scientists knew what 70 percent of Earth’s surface really looked like radar, which produces images by bouncing radio waves rather than sound waves off durve objects, cannot be used for bathymetry because water absorbs radio waves. Please try again later. These subduction zones are the deepest places in the ocean, varying from 7 to 11 kilometers 4 miles to 6.

Twin sheets of fresh, mile-thick crust emerge from the mantle along the sides of the rift valley and flow slowly away from it in opposite directions. Bathymetric maps represent the ocean depth as a function of geographical coordinates in the same way topographic maps represent the altitude of Earth’s surface at different geographic points. Then compare your response to the correct answer.

Ocean-Floor Bathymetry

In the original paper on this topic, Arthur Strahler proposed a curve containing three parameters to fit different hypsometric relations: The curve shows that a small percentage of Earth’s surface consists of high-altitude continental mountains, 30 percent of the surface consists of continental lowlands. Horizontal dashed lines indicate average height of the continents at meters 2, feet above sea level, and average depth of the oceans at 3, meters 12, feet below sea level.

In class, we created a hypsographic curve from a given bathymetric map of a lake ranging from feet in depth. The Ocean Floor in Cross-Section The oceans begins, of course, at the shore, the irregular boundary where the surface of a continent descends first to sea level and then beneath it.

The hypsographic curve is a scientific way of describing the topography of the seafloor.

Introductory Oceanography, 9th ed. When high-resolution images are desired, an underwater unit may be towed behind a ship, scanning to the left and right with multiple sonar beams sidescan sonar.


Hypsometric curve

Major subdivisions of the oceans. The fact that Earth’s surface is comprised mostly of flat plates of continental and oceanic crust, with mountains and deep-sea trenches occurring only along their edges where the plates collide, gives the hypsographic curve its characteristic shape. For hundreds of years, the only way to measure ocean depth was the sounding line, a weighted rope or wire that was lowered overboard until it touched the ocean floor.

The y-axis tells us the elevation of that province. Unfortunately, our editorial approach may not be able to accommodate all contributions. When drawn as a 2-dimensional histogram, a hypsometric curve displays the elevation y on the vertical, y-axis and area above the corresponding elevation x on the horizontal or x-axis.

Ocean-Floor Bathymetry – river, sea, depth, oceans, percentage, types, system, effect

Click to view larger. Keep Exploring Britannica Water. Sonar so und na vigation r anginginvented during World War II — measures distances by emitting a short pulse of high-frequency sound and measuring the time until an echo is cjrve. Thank You for Your Contribution! In the case of the Mid-Atlantic rift valley, one sheet flows east and the other west, each moving at about half an inch per year.

The Editors of Encyclopaedia Britannica. Curv research using two-dimensional landscape evolution models has called the general applicability hpysographic this fit into question, [5] as well as the capability of the hypsometric curve to deal with scale-dependent effects.

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