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. Earthquakes are rare because Florida is not located near any tectonic plate boundaries. 3 Twenty-first century 2 Hialeah Miami-Dade 226,419 224,669 238,942 +6.35% In 1922 a historic moment in cartography and oceanography occurred the USS Stewart used a Navy Sonic Depth Finder to draw a continuous map across the bed of the Atlantic This involved little guesswork because the idea of sonar is straight forward with pulses being sent from the vessel which bounce off the ocean floor then return to the vessel the deep ocean floor is thought to be fairly flat with occasional deeps abyssal plains trenches seamounts basins plateaus canyons and some guyots Various shelves along the margins of the continents constitute about 11% of the bottom topography with few deep channels cut across the continental rise. 8265 Ska punk band Against All Authority is from Miami and rock/metal bands Nonpoint and Marilyn Manson each formed in Fort Lauderdale, Main article: Draining and development of the Everglades. .
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