Heezen , Bruce Charles
(1924–1977) American oceanographer
Born in Vinton, Iowa, Heezen was educated at Iowa State University, graduating in 1948, and at Columbia, New York, where he received his PhD in 1957. He worked at the Lamont Geological Observatory at Columbia from 1948.
Heezen's work has contributed significantly to knowledge of the ocean floor and the processes that operate within the oceans. In 1952 he produced convincing evidence for the existence of turbidity currents; i.e., currents caused by a mass of water full of suspended sediment. Their existence had been suggested by Reginald Daly in 1936 and proposed as the cause of submarine canyons. Heezen used precise records available from the 1929 Grand Bank earthquake to study these currents. As the area off the Grand Bank was rich with communication cables, exact records of the disturbance caused by the earthquake had been obtained. He was able to reconstruct the movement down the bank of about 25 cubic miles (100 cubic km) of sediment moving with speeds approaching 50 miles per hour (85km per hour).
In 1957, in collaboration with William Ewing and Marie Tharp, the existence of the worldwide ocean rift was demonstrated and its connection with seismic activity postulated. In 1960 Heezen argued for an expanding Earth in which new material is emerging from the rift, increasing the oceans' width and pushing the continents further apart. Such a view, based on the grounds that the gravitational constant decreases slowly with time, had been suggested earlier by Paul Dirac, but received little support in the early 1960s, particularly when a more plausible mechanism was suggested by Harry H. Hess in 1962.

Scientists. . 2011.

Look at other dictionaries:

  • Heezen — Bruce Charles Heezen (* 11. April 1924 in Vinton, Benton County, Iowa; † 21. Juni 1977) war ein amerikanischer Geologe. Heezen erhielt den Bachelor an der Iowa State University, 1952 den Master von der Columbia University und 1957 den Doctor of… …   Deutsch Wikipedia

  • Bruce C. Heezen — Bruce Charles Heezen (* 11. April 1924 in Vinton, Benton County, Iowa; † 21. Juni 1977) war ein amerikanischer Geologe. Heezen erhielt den Bachelor an der Iowa State University, 1952 den Master von der Columbia University und 1957 den Doctor of… …   Deutsch Wikipedia

  • Bruce C. Heezen — Infobox Scientist box width = name = Bruce Charles Heezen image size = caption = Marie Tharp and Bruce Heezen birth date = birth date|1924|04|11 birth place = Vinton, Iowa death date = death date and age|1977|06|21|1924|04|11 death place =… …   Wikipedia

  • Liste der Biografien/Hea–Heh — Biografien: A B C D E F G H I J K L M N O P Q …   Deutsch Wikipedia

  • Eltanin Antenna — USNS Eltanin Photo (1964) Eltanin Antenna is the name popularly given to an unusual sponge photographed on the sea floor by the Antarctic oceanographic research ship USNS Eltanin in 1964, while photographing the sea bottom west of Cape Horn. Due… …   Wikipedia

  • Plate tectonics — The tectonic plates of the world were mapped in the second half of the 20th century …   Wikipedia

  • List of current ships of the United States Navy — Harry S. Truman visits Greece 2002 This is a list of current ships of the United States Navy. There are more than 400 ships believed to be in active service with the United States Navy, on reserve, or under construction, based on public reports… …   Wikipedia

  • Mid-Atlantic Ridge — The location of the Mid Atlantic Ridge The ridge was central in the breakup of Pangaea that began some 180 million years ago …   Wikipedia

  • DORSALES OCÉANIQUES — Les dorsales océaniques (souvent appelées dorsales médio océaniques, bien qu’elles n’occupent pas toujours une position médiane) désignent des chaînes sous marines existant dans tous les bassins océaniques. Alignées sur près de 60 000 kilomètres… …   Encyclopédie Universelle

  • List of geologists — A geologist is a contributor to the science of geology. Geologists are also known as earth scientists or geoscientists.The following is a list of famous or notable geologists. Many have received such awards as the Penrose Medal, the Wollaston… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”