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Hans Ertel (March 24, 1904 in Berlin – July 2, 1971 in Berlin) was a German natural scientist and a pioneer in geophysics, meteorology and hydrodynamics. ==Life and work== Hans Ertel began his scientific career at the former ''Preußischen Meteorologischen Institut'' (Prussian Meteorological Institute), where the representatives of the Austrian school of meteorology, (Heinrich von Ficker and Albert Defant) had formative influence on him and gave him their lasting support. Ertel continued the works of Felix Maria von Exner-Ewarten, a leading theoretical meteorologist of his time who lived in Vienna, and he completed many of them. He developed into a capable theoretical physicist early on and he was already to publish research results or theoretical approaches in this subject as a young man. Ertel's famous vorticity equation of 1942 belongs today to the basic work of modern geophysics and astrophysics. In 1943, he was given the position of professor for meteorology and geophysics at the University of Innsbruck, and he also attended lectures by Arnold Sommerfeld. After Second World War, Ertel was interested in a professorship for geophysics at the University of Munich, but was instead appointed to professor for geophysics at Berlin University in 1946, where he also become the director of the Institute for Meteorology and Geophysics which belonged to the university. At the invitation of various scientists, such as Hilding Köhler, Markus Bath and Carl-Gustav Rossby, with whom he also maintained long friendships, Ertel held lectures at Stockholm University and Uppsala University in Sweden and took part in congresses, thereby creating a good reputation for his field of research at the Berlin University. As a member of the ''Deutschen Akademie der Wisschaften zu Berlin'', (German Academy of Sciences Berlin), or DAW, Ertel founded and led the ''Institute for Physical Hydrography'' of this academy as of 1948. In 1949, Ertel was elected to be a full member of the DAW and was its vice president from 1951 to 1961. During this time, he saw to the founding of some new academy institutes, and also ensured that all of Germany could participate during the International Geophysical Years (1957/58 and 1958/59). The research on geo-ecology, which began under his leadership at the Institute, is considered to be pioneering work today. The following areas of emphasis in research from his time as leader of the Institute enriched scientific knowledge and the subject areas to a great degree: * physical hydrography (more than 60 works) * theoretical hydrodynamics * turbulence *special hydrodynamics of the northern German seas and coasts *hydraulic nomography *hydrographic cartography *the history of European weather *theoretical mechanics (as of 1960) The results of his work were regularly published in specialized international and national magazines (e.g., the ''Monthly Reports of the German Academy of Sciences''), as well as in the magazine of the Institute, ''Acta Hydrophysica'', and soon led to a high reputation for himself and for his institute.Wilfried Schröder has edited the works by Hans Ertel in 8 volumes during the years 1991-2006. Even beyond his institute, Ertel made sure that the magazines, ''Gerlands Beiträge zur Geophysik'', ''Zeitschrift für Meteorologie'' and ''Forschungen und Fortschritte'' appeared and he collaborated on the ''Deutschen Literaturzeitschrift'' himself. Furthermore, he held guest lectures abroad, especially at conferences, participated in research trips and supported international projects. Personally, Ertel was concerned with coastal protection, theoretical geomorphology, meteorological problems and cosmology. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Hans Ertel」の詳細全文を読む スポンサード リンク
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