Sekiya Seikei (関谷 清景, 28 January 1855 – 8 January 1896), alternatively Sekiya Kiyokage, was a Japanesegeologist, one of the first seismologists, influential in establishing the study of seismology in Japan and known for his model showing the motion of an earth-particle during an earthquake.[1]
Sekiya took up the study of the earthquakes in 1880. In 1886, he was appointed as the first professor of seismology at what was to be the University of Tokyo, the first such full-time university appointment in the world.[2] In this position, he helped in the extension of the seismic survey in Japan and in the erection of seismographs throughout the country. In 1886, the number of observing stations was over 600. In 1896, at the time of his death it had risen to 968.[3]
Outside the scientific community, Sekiya is best known for the model representing the motion of the ground during an earthquake, inspired by the Tokyo earthquake of 1887.[3] His earthquake model consists of three twisted copper wires that are mounted side by side on a lacquered wooden stand. The wire diagram gives an illustration of the complicated movements of the ground during an earthquake, conveying the complexity of ground motion, both in terms of the vagaries of its geometric path and in its erratic accelerations. Sekiya's original copper-wire model now resides in the Whipple Museum of the History of Science at Cambridge University.[4] According to Hudson (1992 p. 6), "His measurements and calculations of ground displacement and acceleration of the 1887 Japanese earthquake were the first estimates of ground motion based on reasonably accurate data."[5]
After spending several months studying the new crater and the devastated areas subsequent to 1888 eruption of Mount Bandai, he published together with Y. Kikuchi a report in English (“The eruption of Bandai-san” Tokyo Imperial University College of Sciences Journal 3 (1890), pp 91–171), which is considered a classic in volcanology.
Referencesedit
^The date of birth is 11 December of Ansei 1 (1854) in Japanese calendar, which is 28 January 1855 in Gregorian calendar. "岐阜県ゆかりの先駆者たち". Gifu Prefectural Library. 2009. Retrieved July 17, 2010.
^Robert Reitherman (February 12, 2008). "International Aspects Of the History of Earthquake Engineering" (PDF). Earthquake Engineering Research Institute. Retrieved July 15, 2010.
^ abCharles Davison (1930). The founders of seismology. The University Press.
^Hudson, Donald E. (1992). “A history of earthquake engineering,” Proceedings IDNDR International Symposium on Earthquake Disaster Reduction Technology, Tsukuba, Japan cited in Robert Reitherman (February 12, 2008). "International Aspects Of the History of Earthquake Engineering" (PDF). Earthquake Engineering Research Institute. Retrieved July 15, 2010.
External linksedit
Media related to Sekiya Seikei at Wikimedia Commons
January 01, 1970
sekiya, seikei, this, japanese, name, surname, sekiya, 関谷, 清景, january, 1855, january, 1896, alternatively, sekiya, kiyokage, japanese, geologist, first, seismologists, influential, establishing, study, seismology, japan, known, model, showing, motion, earth, . In this Japanese name the surname is Sekiya Sekiya Seikei 関谷 清景 28 January 1855 8 January 1896 alternatively Sekiya Kiyokage was a Japanese geologist one of the first seismologists influential in establishing the study of seismology in Japan and known for his model showing the motion of an earth particle during an earthquake 1 Sekiya SeikeiBorn 1855 01 28 28 January 1855JapanDied8 January 1896 1896 01 08 aged 40 JapanNationalityJapaneseScientific careerFieldsGeology and SeismologyCareer editSekiya took up the study of the earthquakes in 1880 In 1886 he was appointed as the first professor of seismology at what was to be the University of Tokyo the first such full time university appointment in the world 2 In this position he helped in the extension of the seismic survey in Japan and in the erection of seismographs throughout the country In 1886 the number of observing stations was over 600 In 1896 at the time of his death it had risen to 968 3 Outside the scientific community Sekiya is best known for the model representing the motion of the ground during an earthquake inspired by the Tokyo earthquake of 1887 3 His earthquake model consists of three twisted copper wires that are mounted side by side on a lacquered wooden stand The wire diagram gives an illustration of the complicated movements of the ground during an earthquake conveying the complexity of ground motion both in terms of the vagaries of its geometric path and in its erratic accelerations Sekiya s original copper wire model now resides in the Whipple Museum of the History of Science at Cambridge University 4 According to Hudson 1992 p 6 His measurements and calculations of ground displacement and acceleration of the 1887 Japanese earthquake were the first estimates of ground motion based on reasonably accurate data 5 After spending several months studying the new crater and the devastated areas subsequent to 1888 eruption of Mount Bandai he published together with Y Kikuchi a report in English The eruption of Bandai san Tokyo Imperial University College of Sciences Journal 3 1890 pp 91 171 which is considered a classic in volcanology References edit The date of birth is 11 December of Ansei 1 1854 in Japanese calendar which is 28 January 1855 in Gregorian calendar 岐阜県ゆかりの先駆者たち Gifu Prefectural Library 2009 Retrieved July 17 2010 Robert Reitherman February 12 2008 International Aspects Of the History of Earthquake Engineering PDF Earthquake Engineering Research Institute Retrieved July 15 2010 a b Charles Davison 1930 The founders of seismology The University Press Mark Sprevak 2006 A Japanese earthquake model Whipple Museum of the History of Science Retrieved July 15 2010 Hudson Donald E 1992 A history of earthquake engineering Proceedings IDNDR International Symposium on Earthquake Disaster Reduction Technology Tsukuba Japancited in Robert Reitherman February 12 2008 International Aspects Of the History of Earthquake Engineering PDF Earthquake Engineering Research Institute Retrieved July 15 2010 External links edit nbsp Media related to Sekiya Seikei at Wikimedia Commons Retrieved from https en wikipedia org w index php title Sekiya Seikei amp oldid 1209120101, wikipedia, wiki, book, books, library,
