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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G115 – Introduction to Oceanography
The abyssal plain is dotted with thousands of small, extinct volcanoes called abyssal hills. Any text you add should be original, not copied from other sources. From Wikipedia, the free encyclopedia. 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.
The continental slope is about 16 kilometers 10 miles wide, on average, and descends to a depth of about 2. 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. Notice this part of the line has a fairly steep slope. This gives a person an idea of how the basin of the body of water is shaped. Major subdivisions of the oceans.
Discover some hypsoggaphic the most interesting and trending topics of Along the center of the mid-ocean ridge is the rift valley, a deep V-shaped notch. Retrieved from ” https: If you prefer to suggest your own revision of the article, you can go to edit mode requires login. Then compare your response to the correct answer. Archived from the original on Bathymetric Techniques 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.
Hypsographic Curve | Article about Hypsographic Curve by The Free Dictionary
This flat, wide margin is found around every continent and is known as the continental shelf. Physical geography Geomorphology Fluvial geomorphology Geomorphology stubs Cartography stubs.
Thurman, Harold, and Elizabeth Burton. The abyssal plains of the Atlantic appear smooth because its abyssal hills are buried under a thick blanket of continental sediment, but in the Pacific Ocean basin, which is ringed by trenches that trap sediments before they can spread over the ocean floor, tens of thousands of unburied abyssal hills have been observed.
These growing sheets of crust have the effect of forcing the distant continents farther apart, a process called sea-floor spreading. What percent of the earth’s surface is “deep” ocean and how deep is “deep” ocean considered?
The data collected made possible complete bathymetric maps of the world’s oceans. Not only was this method time-consuming, it was inaccurate; ship drift or water currents could drag the line off at an angle, which would exaggerate the depth reading.
This page was last edited on 13 Decemberat The oceanic crust that is forced to submerge or subduct in this manner slides down into the mantle at an angle.
In the hypsometric curve of the total Earth surface there exist two maxima of frequencies—at the metre yard and the 4,metre 5,yard elevations, which correlate with the mean level of the lowland continental areas and the deep-sea floor. Comment about this article, ask questions, or add new information about this topic: Help us improve this article! Please try again later.
Along the length of a typical subduction zone or deep-sea trench, a sheet of old oceanic crust is forced beneath continental crust. 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. Keep Exploring Britannica Water.
Bulletin of the Geological Society of America. You can make it easier for us to review and, hopefully, publish your contribution by keeping a few points in mind. Also shown is the average ocean depth and land elevation. These subduction hjpsographic are the deepest places in the ocean, varying from 7 to 11 kilometers 4 miles to 6.
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 heard.
Water, a substance composed of the chemical elements hydrogen and oxygen and existing in gaseous, liquid,…. The continental shelf ends at a sudden dropoff called the shelf break. Most bathymetric maps show isobaths hypsographlc of equal depths as contours for the body of water. Guyots are drowned volcanic islands that become submerged due to subsidence of the oceanic lithosphere.
From this valley, new oceanic crust is constantly being extruded from Earth’s mantle by processes not yet fully understood. When furve 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. The resulting curve is shown below in Figure 1.
The elevation features of the ocean floor—shelves, slopes, rises, plains, ridges, and trenches—are quantitatively summarized by oceanographers, along with the distribution of dry land at different altitudes, in a graph called the hypsographic curve see the figure.
At the bottom of the article, feel free to list any sources that support your changes, so that we can fully understand their context. This geomorphology article is a stub. In the twentieth century, sounding lines were entirely replaced by sonar systems.