D-printed-globes.png' alt='Spinning 3D Earth Globe Free' title='Spinning 3D Earth Globe Free' />If the Earth Stood Still. Modeling the absence of centrifugal force. By Witold Fraczek, Esri. This article as a PDF. The following is not a futuristic scenario. Am Un Baiat Smecher Mare more. It is not science fiction. It is a demonstration of the capabilities of GIS to model the results of an extremely unlikely, yet intellectually fascinating query What would happen if the earth stopped spinningRevolverMaps Interactive 3D Visitor Globes. Have a look at the sample on the left Every visitor leaves an eternal dot on the 3D globe, recent visitor locations. QoFz95NXoVoepm17i-qQO_l8Dra7xPj-gGl1CxU-kTg=' alt='Spinning 3D Earth Globe Free' title='Spinning 3D Earth Globe Free' />Arc. GIS was used to perform complex raster analysis and volumetric computations and generate maps that visualize these results. The world as we know it. The obvious demarcation of land and ocean is indicated by the contour of 0 elevation. The longer, equatorial axis of Earths ellipsoid is more than 2. The flattening of the ellipsoid shown on this map was intentionally exaggerated. The most significant feature on any map that depicts even a portion of the earths ocean is the spatial extent of that water body. Typically, we do not pay much attention to the delineation of the sea because it seems so obvious and constant that we do not realize it is a foundation of geography and the basis for our perception of the physical world. The line separating oceans from continents outlining the spatial extent of both land and water is the most fundamental contour. It is zero elevation because it signifies the sea level. Why is the sea level where we currently observe it What controls the sea level How stable are the forces that determine the sea level This article does not refer to the climate change and the potential increase of the water level in the global ocean but rather to the geometry of the globe and the powerful geophysical energies that determine where oceans lie. Sea level isand has always beenin equilibrium with the planets gravity, which pulls the water toward the earths center of mass, and the outward centrifugal force, which results from the earths rotation. Earth is Not Tilting, Wobbling, Rotating, Revolving, Spinning, Turning, Moving, Not a Ball, Sphere, Globe, Earth is FlatAfter a few billion years of spinning, the earth has taken on the shape of an ellipsoid which can be thought of as a flattened sphere. Consequently, the distance to the earths center of mass is the longest around the equator and shortest beyond the polar circles. The current difference between the average sea level as observed along the equator and the distance to the earths center of mass from the sea level at the poles is about 2. The gravity of the still earth is the strongest at the polar regions shown in green. It is intermediate in the middle latitudes and weakest at the high altitudes of the Andes, close to the equator. Photoimpact Pro 12. When global rotation stops, the massive oceanic water migration would cease and sea level would be at different locations, completely changing world geography. What would happen if the earths rotation slowed down and finally stopped spinning over a period of a few decadesArc. GIS lets us model the effects of this scenario, performing calculations and estimations and creating a series of maps showing the effects the absence of centrifugal force would have on sea level. If earth ceased rotating about its axis but continued revolving around the sun and its axis of rotation maintained the same inclination, the length of a year would remain the same, but a day would last as long as a year. In this fictitious scenario, the sequential disappearance of centrifugal force would cause a catastrophic change in climate and disastrous geologic adjustments expressed as devastating earthquakes to the transforming equipotential gravitational state. The lack of the centrifugal effect would result in the gravity of the earth being the only significant force controlling the extent of the oceans. Prominent celestial bodies such as the moon and sun would also play a role, but because of their distance from the earth, their impact on the extent of global oceans would be negligible. Verdadera Historia Barra Brava Boca Pdf'>12 Verdadera Historia Barra Brava Boca Pdf. If the earths gravity alone was responsible for creating a new geography, the huge bulge of oceanic waterwhich is now about 8 km high at the equatorwould migrate to where a stationary earths gravity would be the strongest. This bulge is attributed to the centrifugal effect of earths spinning with a linear speed of 1,6. The existing equatorial water bulge also inflates the ellipsoidal shape of the globe itself. The extent of a hypothetical northern circumpolar ocean over the territory of North America is shown. The orange color indicates areas with elevation higher than 3,0. Red dots represent some of the biggest cities of the continent. The bulge defines the final shape of the globe by establishing the uniform sea level in gravitational equilibrium, which is used as the standard reference for describing the shape of the earth. It is the geometry of this very shape that geodesists were trying to calculate for more than a century. Their efforts were finalized by the acceptance of the ellipsoid referred to as World Geodetic System 1. WGS8. 4 by the international community in Washington, D. C., in 1. 98. 4. The ellipsoid WGS8. If the earth stood still, the oceans would gradually migrate toward the poles and cause land in the equatorial region to emerge. This would eventually result in a huge equatorial megacontinent and two large polar oceans. The line that delineates the areas that hydrologically contribute to one or the other ocean would follow the equator if the earth was a perfect ellipsoid. However, due to the significant relief of both the continents and the ocean floor, the hypothetical global divide between the areas that hydrologically contribute to one or another ocean deviates from the equator significantly. Analogous to the well known U. S. Continental Divide, this would be the border separating two giant hemispherical watersheds of the new circumpolar oceans. Interestingly, the highest point on this global divide would not be the highest altitude on the entire globe. The highest elevation of the global divide in the Colombian Andes would be about 1. Chimborazo Ecuador and Kilimanjaro Tanzania would be 1. Both volcanoes happen not to be located on the global divide line. The lowest point on the new global dividing line, with an elevation of 2,7. Kiribati Island in the western Pacific. Due to the unique relief of the earths surface at the beginning of the slowdown, the most significant changes to the outline of land versus water would occur at the high latitudes of the northern hemisphere where the swell ocean would quickly expand over the flat and vast territories of northern Siberia and northern Canada. At the same time, changes to the continental outlines at low latitudes would be barely perceptible because with a few exceptions equatorial waters are deep, and a decrease in water level by a few dozen meters would not cause large areas of land to emerge. Toward the end of the slowdown period, when the main geographic features of oceans and land would have already adjusted to the ellipsoidal shape of the globe and the new distribution of gravity, relatively small changes would occur. This can be attributed to the ellipsoidal shape of the globe, which overwhelms the effect of the diversity of the earths geographic relief. Today, all three world oceans are connected. This creates a global ocean with basically one sea level. As a consequence of rotational slowdown, the outline of the global ocean would continuously undergo dramatic changes. Equatorial waters would move toward polar areas, initially causing a significant reduction in depth while filling the polar basins that have much less capacity.