HYPSOGRAPHIC CURVE PDF

The histogram reveals two primary elevation groupings: the continents, several hundred meters above sea level, and the oceanic abyssal plains, roughly 4, meters below sea level. This distribution indicates that the crust of the ocean floor is fundamentally different from the continents, which has been confirmed by countless research studies. The dramatic steepening of the hypsographic curve at mountains and oceanic trenches can only be maintained by a dynamic Earth. On geologic timescales, such features would quickly erode or fill in with sediments. Coastal Hypsographic Curve. Figure 2 shows an enlarged hypsographic curve spanning the coastal zone to m elevation.

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The histogram reveals two primary elevation groupings: the continents, several hundred meters above sea level, and the oceanic abyssal plains, roughly 4, meters below sea level. This distribution indicates that the crust of the ocean floor is fundamentally different from the continents, which has been confirmed by countless research studies.

The dramatic steepening of the hypsographic curve at mountains and oceanic trenches can only be maintained by a dynamic Earth.

On geologic timescales, such features would quickly erode or fill in with sediments. Coastal Hypsographic Curve. Figure 2 shows an enlarged hypsographic curve spanning the coastal zone to m elevation. While ETOPO1 does not resolve meter-level variations, the curve nevertheless reveals three distinct trends between and meters of elevation. Figure 2: Coastal hypsographic curve.

Histogram Calculation. The histogram was determined using Equation 1 to calculate the area of each cell, which were grouped by elevation and summed Table 1.

ETOPO1 elevation values are to the nearest meter, with an accuracy no better than ten meters. In deep ocean areas, depths are accurate to tens of meters at best.

The hypsographic curves Figs.

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Hypsometric curve[ edit ] Hypsometric curve of Earth as a histogram. A hypsometric curve is a histogram or cumulative distribution function of elevations in a geographical area. Differences in hypsometric curves between landscapes arise because the geomorphic processes that shape the landscape may be different. 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. The curve can also be shown in non-dimensional or standardized form by scaling elevation and area by the maximum values.

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Hypsometry

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