The lake has three basins namely the eastern, central, and western basins and has an average depth of 62 feet. The eastern basin has an average depth of about 80 feet while the central and western basins have an average depth of 60 and 24 feet respectively with the deepest point in the lake estimated to be about feet.
The great lakes were formed about 12, years ago by glacial ice. The lakes oldest rocks are about million years old. Lake Erie is thought to have been one of the first of the lakes to be formed. An estimated 22, square miles of land directly drain into the lake with Detroit River providing 80 to 90 percent of the lake's water.
Boston public schools, for example, recently switched to the Gall-Peters projection , which more accurately depicts the true size of landmasses. As well, Google, whose map app is used by approximately one billion people per month, took the bold step of using different projections for different purposes in The Earth is depicted as a globe at further zoom levels, sidestepping map projection issues completely and displaying the world as it actually is: round.
In , mathematician and astronomer, Karl Mollweide, created a namesake projection that trades accuracy of angles and shape for accuracy of proportion. The Mollweide projection has inspired many other attempts at a user-friendly equal area map.
Another evolution in cartography was the Dymaxion map , invented by Buckminster Fuller and patented in In this version, the continents are no longer in their familiar positions—however, there is more spacial fidelity than in previous projection methods.
Using a new map-making method called AuthaGraph , Japanese architect, Hajime Narukawa, may have created the most accurate map of the world yet.
AuthaGraph divides the globe into 96 triangles, transfers them to a tetrahedron and unfolds into a rectangle. The end result? Landmasses and seas are more accurately proportioned than in traditional projections. The biggest downfall of the AuthaGraph map is that longitude and latitude lines are no longer a tidy grid. As well, continents on the map are repositioned in a way that will be unfamiliar to a population that is already geographically challenged.
That said, depicting our round world on a flat surface will always come with some trade-offs. As demand grows for a true equal-area map, it will be exciting to see what the next generation of map projections have to offer. Looking to learn more about maps and map projections? This fantastic tool , created by Florian Ledermann, allows users to take a vast selection of projection styles, and modify them in different ways.
This hands-on approach is a fun way to learn how the shape of landmasses shift as the projection changes. In fact, on average globally, women have just three-quarters of the economic rights of men. According to the World Bank, only 10 countries offer full legal protections to women, and all of them are in the Northern Hemisphere.
In ranking countries, the institution considers indicators like equal remuneration, legal rights, and mobility. A score of means that women are on equal legal standing with men across all areas measured. It is the shallowest of the Great Lakes with an average depth of 62 feet and a maximum depth of feet. The lake is warmer compared to the other lakes because of its shallow depth and continues to pose a problem for the two nuclear power plants that require cold water to cool the reactors.
The Great Lakes Ranked by Size. The lake holds an average of cubic miles of water. The water surface lies at an altitude of feet above the sea level. Its average depth is feet while its deepest point is feet. Almost 80 percent of the lake's shoreline is privately owned and not accessible to the public.
Lake Superior is shared by the United States and Canada. It is considered the largest lake in the world by area and the third largest by volume. It spreads over 31, square miles with a maximum length of statute miles and breadth of statute miles. Its maximum depth is 1, feet, while the average depth is around feet. The temperature of the lake varies over the seasons, but at a depth of feet it is constantly around 39 degrees Fahrenheit.
Winds, combined with the current, create waves during the entire year. Occasionally, thunderstorms can make waves up to 30 feet in height.
Over rivers feed Lake Superior. Lake Michigan is the only one of the Great Lakes which is not shared with Canada. It is the third largest of the five lakes by the surface area and the second largest by volume. Some people consider Lake Michigan and Lake Huron one lake because the Straits of Mackinac connect the two lakes and gives the appearance of one, single water surface. Its 22, square miles puts it to the fifth position of largest lakes in the world with miles length and breadth.
The average depth of the lake is feet while the deepest bottom lays on feet.
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