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BRUNHES Jean
Brunhes may refer to: *Bernard Brunhes (1867–1910), French geophysicist ** Brunhes–Matuyama reversal, the reversal of the Earth's magnetic field approximately 781,000 years ago named after Brunhes and Motonori Matuyama *Jean Brunhes Jean Brunhes (, born 25 October 1869, Toulouse, France-died 25 August 1930, Boulogne-Billancourt) was a French geographer A geographer is a physical scientist, social scientist or humanist whose area of study is geography, the study of Eart ... (1869–1930), French geographer See also * Brunhes-Chavany syndrome or Fahr's syndrome, a rare genetic neurological disorder * Mid-Brunhes Event, a climatic shift approximately 430,000 years ago {{disambiguation, surname ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bernard Brunhes
Antoine Joseph Bernard Brunhes (3 July 1867 – 10 May 1910) was a French people, French Geophysics, geophysicist known for his pioneering work in paleomagnetism, in particular, his 1906 discovery of geomagnetic reversal. The current period of normal polarity, ''Brunhes Chron'', and the Brunhes–Matuyama reversal are named for him. Brunhes was educated at the École Normale Supérieure in Paris, from which he graduated as an ''Agrégation, agrégé'' qualified in physics. Appointed at Université Lille Nord de France, he taught physics and electrical engineering at École centrale de Lille from 1893 to 1895. In November 1900, he was appointed as head of the Puy-de-Dôme (mountain), Puy-de-Dôme Observatory, built on an extinct volcano in the Auvergne (region), Auvergne region of France, where he worked until his death in 1910. It was during his time at the observatory that he made the crucial observation that led to his discovery of geomagnetic reversal. In 1905, he found tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brunhes–Matuyama Reversal
The Brunhes–Matuyama reversal, named after Bernard Brunhes and Motonori Matuyama, was a geologic event, approximately 781,000 years ago, when the Earth's magnetic field last underwent reversal. Estimations vary as to the abruptness of the reversal. A 2004 paper estimated that it took over several thousand years; a 2010 paper estimated that it occurred more quickly, perhaps within a human lifetime; a 2019 paper estimated that the reversal lasted 22,000 years. The apparent duration at any particular location can vary by an order of magnitude, depending on geomagnetic latitude and local effects of non-dipole components of the Earth's field during the transition. The Brunhes–Matuyama reversal is a marker for the Global Boundary Stratotype Section and Point (GSSP) defining the base of the Chibanian Stage and Middle Pleistocene Subseries at the Chiba section, Japan, which was officially ratified in 2020 by the International Union of Geological Sciences. It is useful in dating ocea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean Brunhes
Jean Brunhes (, born 25 October 1869, Toulouse, France-died 25 August 1930, Boulogne-Billancourt) was a French geographer A geographer is a physical scientist, social scientist or humanist whose area of study is geography, the study of Earth's natural environment and human society, including how society and nature interacts. The Greek prefix "geo" means "earth" a .... His most famous book is ''La géographie humaine'' (''Human Geography''). He was the director of '' The Archives of the Planet'', an international photographic project sponsored by Albert Kahn. ''Ruskin et la Bible: pour servir à l'histoire d'une pensée'' (1901) is a popular book by Jean and Henriette Brunhes. References *Numa Broc, Regards sur la géographie française de la Renaissance à nos jours, Presses universitaires de Perpignan, 1995. *Musée Albert Kahn, Boulogne, Jean Brunhes autour du monde, regards d'un géographe / regards de la géographie, Vilo, Paris, 1993, 348 p. *Jean-Louis Tissier, Brunh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brunhes-Chavany Syndrome
Primary Indiana familial brain calcification Initial Posting: April 18, 2004; Last Update: August 24, 2017. (PFBC), also known as familial idiopathic basal ganglia calcification (FIBGC) and Fahr's disease, is a rare, genetically dominant, inherited neurological disorder characterized by abnormal deposits of calcium in areas of the brain that control movement. Through the use of CT scans, calcifications are seen primarily in the basal ganglia and in other areas such as the cerebral cortex. Signs and symptoms Symptoms of this disease include deterioration of motor functions and speech, seizures, and other involuntary movement. Other symptoms are headaches, dementia, and vision impairment. Characteristics of Parkinson's Disease are also similar to PFBC. The disease usually manifests itself in the third to fifth decade of life but may appear in childhood or later in life.Sobrido MJ, Hopfer S, Geschwind DH (2007)Familial idiopathic basal ganglia calcification" In: Pagon RA, Bird ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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