Norman Sleep

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Norman H. Sleep (born before 1967) is an American geophysicist and professor of geophysics at Stanford University . He made significant contributions to problems in plate tectonics and many other areas of geology and planetology .

Scientific career

In 1967, Sleep received his BS in mathematics from Michigan State University . He then studied geophysics at the Massachusetts Institute of Technology (MIT), where he obtained a master's degree in 1969 and a doctorate in geophysics in 1973. After a short period as a postdoctoral research associate at MIT, he moved to Northwestern University in 1973 and was assistant professor of geophysics there. In 1979 he was appointed professor of geophysics and geology at Stanford University . Since 1993 he has been professor of geophysics there.

research

Since 1969, Sleep has dealt with mid-ocean ridges . He demonstrated for the first time the temperature dependence of the relationship between water depth and the age of the underlying seabed and developed models that showed the great influence of the circulation of hydrothermal fluids on the chemistry of the sea water and the structure of the ridges. In the 1970s he researched the formation of extended continental margins . He measured the subsidence rate, which can be determined from the thickness and age of the deposited sediments , and found that the subsidence history there is no different from the subsidence history of the oceanic crust . Sleep also developed models for sediment deposition on passive continental margins . He was able to show that the measurement data were compatible with the deposition on a temperature-controlled sinking ( thermal subsidence ) caused by expansion and breakage ( rifted margin ). Further research areas were island arcs and subduction zones , the composition of the atmosphere and the influence of impact events on the entire planet. In addition, he researched the mechanisms of geological disturbances and was able to demonstrate the great influence of water on movement.

He began to be interested in magmatism as early as the mid-1970s and studied the temperature history of the Earth's mantle until the early 1990s . He also examined the formation and composition of mantle plumes , such as those found under Hawaii . Until the mid-1990s, he tried to transfer his findings in the field of magmatism to Mars and developed a model for the Tharsis region .

Honors and prizes

Sleep received numerous honors and awards:

Works

  • Norman H. Sleep and Kazuya Fujita: Principles of Geophysics. John Wiley and Sons, 1997, ISBN 978-0-86542-076-2 .

Web links

Individual evidence

  1. ^ A b Norman H. Sleep Receives 1998 Walter H. Bucher Medal. Laudation for Sleep on the occasion of the award of the Walter H. Bucher Medal in 1998. American Geophysical Union
  2. ↑ Sleep's personal homepage at Stanford University
  3. ↑ Wollaston Medal - Professor Norman Sleep. ( Memento of the original from May 7, 2012 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Laudation for Sleep on the occasion of the award of the Wollaston Medal 2008. Geological Society @1@ 2Template: Webachiv / IABot / www.geolsoc.org.uk
personal data
SURNAME Sleep, Norman
ALTERNATIVE NAMES Sleep, Norman H.
BRIEF DESCRIPTION American geophysicist and professor of geophysics at Stanford University
DATE OF BIRTH before 1967