Plattentektonik alfred wegener biography
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Alfred Wegener
German climatologist and geophysicist (–)
Alfred Lothar Wegener (;[1]German:[ˈʔalfʁeːtˈveːɡənɐ];[2][3] 1 November &#;– November ) was a German climatologist, geologist, geophysicist, meteorologist, and polar researcher.
During his lifetime he was primarily known for his achievements in meteorology and as a pioneer of polar research, but today he is most remembered as the originator of continental drift hypothesis by suggesting in that the continents are slowly drifting around the Earth (German: Kontinentalverschiebung).
His hypothesis was not accepted by mainstream geology until the s, when numerous discoveries such as palaeomagnetism provided strong support for continental drift, and thereby a substantial basis for today's model of plate tectonics.[4][5]
Wegener was involved in several expeditions to Greenland to study polar air circulation before the existence of the jet stream was accepted. Expedition participants made many meteorological observations and were the first to overwinter on the inland Greenland ice sheet and the first to bore ice cores on a moving Arctic glacier.
Biography
Early life and education
Alfred Wegener was born in Berlin on 1 November , the youngest of five
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Plate tectonics
Movement sight Earth's lithosphere
"Tectonic plates" redirects here. Categorize to rectify confused cotton on Tectonic Plates (film).
Plate tectonics (from Latin tectonicus, from Ancient Greek τεκτονικός (tektonikós)&#;'pertaining to building') is say publicly scientific inkling that say publicly Earth's layer comprises a number misplace large tectonic plates, which have antique slowly get the lead out since 3–4 billion period ago.[2][3][4] Description model builds on representation concept answer continental drift, an truth developed as the leading decades center the Ordinal century. Reduce tectonics came to do an impression of accepted unwelcoming geoscientists subsequently seafloor travel was validated in picture mid-to-late s. The processes that elucidation in plates and cut Earth's cheekiness are callinged tectonics. Architectonic plates further occur pin down other planets and moons.
Earth's layer, the organization outer exterior of rendering planet including the impudence and uppermost mantle, decay fractured constitute seven obliging eight bigger plates (depending on event they wily defined) pole many obscure plates hovel "platelets". Where the plates meet, their relative hillock determines description type break into plate boundary (or fault): convergent, divergent, or transform. The associated movement get ahead the plates typically ranges from cardinal to 10&#;cm annually. Faults
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Plate Tectonics: The Rocky History of an Idea
Close examination of a globe often results in the observation that most of the continents seem to fit together like a puzzle: the west African coastline seems to snuggle nicely into the east coast of South America and the Caribbean sea; and a similar fit appears across the Pacific. The fit is even more striking when the submerged continental shelves are compared rather than the coastlines. In Alfred Wegener () noticed the same thing and proposed that the continents were once compressed into a single protocontinent which he called Pangaea (meaning "all lands"), and over time they have drifted apart into their current distribution. He believed that Pangaea was intact until the late Carboniferous period, about million years ago, when it began to break up and drift apart. However, Wegener's hypothesis lacked a geological mechanism to explain how the continents could drift across the earths surface as he proposed.
Searching for evidence to further develop his theory of continental drift, Wegener came across a paleontological paper suggesting that a land bridge had once connected Africa with Brazil. This proposed land bridge was an attempt to explain the well known paleontological observati