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Hans Cloos (November 8, 1885 – September 26, 1951) was a prominent German structural geologist.

Hans Cloos
BornNovember 8, 1885
DiedSeptember 26, 1951 (1951-09-27) (aged 65)
AwardsPenrose Medal (1948)
Scientific career
InstitutionsUniversity of Breslau
Doctoral studentsİhsan Ketin
Henno Martin
Gravestone of Cloos

Born in Magdeburg, Germany, Hans Cloos earned his doctorate at Freiburg in 1910, then worked in Indonesia and Namibia up until the start of First World War. During the war his geological skills were put to use along the western front.

Following the war, he began a study of plutons and their interior structure. In 1919 he became professor of geology at the University of Breslau. His younger brother, Ernst Cloos, who was born in 1898, would come to study geology at Breslau under his brother and later became a prominent geologist and professor at Johns Hopkins University.

In 1926 Cloos left Breslau to become professor of geology at the University of Bonn. He made additional geological trips to explore the Scandinavian region, England, and North America.

Professor Hans Cloos made pioneering studies of rock deformation, including granite tectonics. He employed scaled analogue models to study the physical mechanics of faulting, and examined how continents developed their structure. He was also noted for his artistic abilities, including music and draftsmanship.

Cloos died in Bonn, Germany in 1951.


The Hans Cloos medalEdit

It is a senior award, which is presented by the International Association for Engineering Geology and the Environment (IAEG) since 1977 to an engineering geologist of outstanding merit.[1][2] It is normally awarded every two years during an international congress of the IAEG.[2]

According to the prize description, "the recipient should be a person of international repute who has made a major contribution to engineering geology in his/her written papers or to the development of engineering geology and/or the IAEG in their own area".[3]

Since 2002, upon receipt of the prize, the winner also delivers a lecture, named the Hans Cloos lecture.[4] Then, the winner is invited to submit a scientific paper based on the lecture for possible publication on the Bulletin of Engineering Geology and the Environment.[4]

The winners of the Hans Cloos medal are listed below:[3]

Year Winner Country
1977 Quido Záruba[2]   Czechoslovakia
1978 Léon Calembert   Belgium
1980 Marcel Arnould   France
1982 Richard Wolters   West Germany
1984 Leopold Müller   Austria
1986 Evgenii M. Sergeev   USSR
1989 David J. Varnes   USA
1990 William R. Dearman   United Kingdom
1992 Michael Langer   Germany
1994 William R. Judd   USA
1996 Ricardo Oliveira   Portugal
1998 Owen L. White   Canada
2000 Paul G. Marinos   Greece
2002 John Knill[4][5]   United Kingdom
2004 Vincenzo Cotecchia[6]   Italy
2006 Robert L. Schuster[7]   USA
2008 Wang Sijing[8]   China
2010 Martin Culshaw[9]   United Kingdom
2012 Victor Osipov[10]   Russia
2014 Roger Cojean[11]   France
2016 Reseat Ulusay[12]   Turkey
2018 Runqiu Huang[13][14]   China



  • Der Mechanismus tiefvulkanischer Vorgänge, 1921.
  • Memoirs: Gespräch mit der Erde, 1947; translated into English as Conversations with the Earth by E.B. Garside, 1953.


  1. ^ "Hans Cloos Medal (IAEG) – Australian Geomechanics Society". Retrieved 2018-06-05.
  2. ^ a b c Záruba, Qu. (1978). "Symposium landslides and other mass movements Glissements et autres Mouvements de Terrain Praha, Czechoslovakia 15–16 September 1977". Bulletin of the International Association of Engineering Geology. 17 (1): 1–4. doi:10.1007/bf02634669. ISSN 1435-9529.
  3. ^ a b "Hans-Cloos Medal - IAEG". Retrieved 2018-06-05.
  4. ^ a b c Knill, John. "Core values: the first Hans-Cloos lecture". Bulletin of Engineering Geology and the Environment. 62 (1). doi:10.1007/s10064-002-0187-9. ISSN 1435-9529.
  5. ^ Baynes, Fred; Rosenbaum, Mike (2004-03-01). "Discussion arising from the 1st Hans Cloos Lecture, by John Knill". Bulletin of Engineering Geology and the Environment. 63 (1): 89–90. doi:10.1007/s10064-003-0217-2. ISSN 1435-9529.
  6. ^ Cotecchia, V. (2006-02-10). "The Second Hans Cloos Lecture. Experience drawn from the great Ancona landslide of 1982". Bulletin of Engineering Geology and the Environment. 65 (1): 1–41. doi:10.1007/s10064-005-0024-z. ISSN 1435-9529.
  7. ^ Schuster, Robert L.; Highland, Lynn M. (2006-12-13). "The Third Hans Cloos Lecture. Urban landslides: socioeconomic impacts and overview of mitigative strategies". Bulletin of Engineering Geology and the Environment. 66 (1): 1–27. doi:10.1007/s10064-006-0080-z. ISSN 1435-9529.
  8. ^ Wang, Sijing (2009-04-18). "2008 Hans Cloos lecture. Seismic geo-hazard assessment of engineering sites in China". Bulletin of Engineering Geology and the Environment. 68 (2): 145–159. doi:10.1007/s10064-009-0208-z. ISSN 1435-9529.
  9. ^ Culshaw, M. G.; Price, S. J. (2011-07-01). "The 2010 Hans Cloos lecture" (PDF). Bulletin of Engineering Geology and the Environment. 70 (3): 333–376. doi:10.1007/s10064-011-0377-4. ISSN 1435-9529.
  10. ^ Osipov, V. I. (2014-04-24). "The 2012 Hans Cloos lecture: physicochemical theory of effective stress in soils". Bulletin of Engineering Geology and the Environment. 73 (4): 903–915. doi:10.1007/s10064-014-0605-9. ISSN 1435-9529.
  11. ^ Cojean, Roger (2015-07-10). "The 2014 Hans Cloos lecture: Engineering Geology—some feedback regarding the practice of a scientific and technical discipline". Bulletin of Engineering Geology and the Environment. 74 (4): 1087–1103. doi:10.1007/s10064-015-0768-z. ISSN 1435-9529.
  12. ^ Ulusay, Reşat; Aydan, Ömer (2017-11-20). "The 2016 Hans Cloos lecture". Bulletin of Engineering Geology and the Environment. 77 (2): 457–488. doi:10.1007/s10064-017-1190-5. ISSN 1435-9529.
  13. ^ "Prof. Huang Runqiu won the academic lifetime achievement award HANS CLOOS MEDAL by IAEG and also delivered a keynote lecture_News Release_News_State Key Laboratory of Geohazard Prevention and Geoenvironment Protection". Retrieved 2018-10-24.
  14. ^ "Photos from the IAEG Congress in San Francisco - IAEG". Retrieved 2018-10-24.