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Marie Tharp (July 30, 1920 – August 23, 2006) was an American geologist and oceanographic cartographer. In the 1950s, she collaborated with geologist Bruce Heezen to produce the first scientific map of the Atlantic Ocean floor. [1] Her cartography revealed a more detailed topography and multi-dimensional geographical landscape of the ocean ...
On 8 March 2023, International Women's Day, the US Navy Secretary, Carlos Del Toro, announced the ship would be renamed in honor of oceanographer Marie Tharp, best known for helping produce the first scientific map of the Atlantic Ocean floor. [12] [13] [14] The renaming was formally completed in the Naval Vessel Register on 13 March 2023. [2]
In 1953, the cartographer Marie Tharp generated the first three-dimensional relief map of the ocean floor which proved there was an underwater mountain range in the middle of the Atlantic, along with the Mid-Atlantic Ridge. [7] The survey data was large step towards many more discoveries about the geology of the sea. [6]
Heezen was born in Vinton, Iowa. An only child, he moved at age six with his parents to Muscatine, Iowa, where he graduated from high school in 1942. He received his B.A. from the University of Iowa in 1947. He received his M.A. in 1952 and a Ph.D in 1957 from Columbia University. Heezen collaborated extensively with cartographer Marie Tharp.
Map of Marie Tharp and Bruce Heezen, painted by Heinrich C. Berann (1977), showing the relief of the ocean floors with the system of mid-ocean ridges A mid-ocean ridge, with magma rising from a chamber below, forming new oceanic lithosphere that spreads away from the ridge Rift zone in Þingvellir National Park, Iceland.
Underwater exploration is the exploration of any underwater environment, either by direct observation by the explorer, or by remote observation and measurement under the direction of the investigators. Systematic, targeted exploration is the most effective method to increase understanding of the ocean and other underwater regions, so they can ...
The General Bathymetric Chart of the Oceans (GEBCO) is a publicly available bathymetric chart of the world's oceans. The project was conceived with the aim of preparing a global series of charts showing the general shape of the seafloor. Over the years it has become a reference map of the bathymetry of the world's oceans for scientists and others.
In 1957, Marie Tharp, working with Bruce Charles Heezen, created the first three-dimensional physiographic map of the world's ocean basins. Tharp's discovery was made at the perfect time. It was one of many discoveries that took place near the same time as the invention of the computer. Computers, with their ability to compute large quantities ...