Hans Cloos

Hans Cloos
Born	8 November 1885 Magdeburg, German Empire
Died	26 September 1951 (1951-09-27) (aged 65) Bonn, West Germany
Nationality	German
Awards	Penrose Medal (1948)
Scientific career
Fields	geology
Institutions	University of Breslau
Doctoral students	İhsan Ketin Henno Martin

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

Memorial plaque 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, West Germany in 1951.

The Hans Cloos medal

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	Resat Ulusay[12]	Turkey
2018	Runqiu Huang[13][14]	China

Honors

• The wrinkle ridge Dorsum Cloos on the Moon is named after him.
• In 2006, Cloos was featured in the book Bedrock: Writers on the Wonders of Geology edited by Lauret E. Savoy, Eldridge M. Moores, and Judith E. Moores (Trinity University Press) which looks at how writing pays a tribute to the Earth's geological features.

Bibliography

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

References

1. "Hans Cloos Medal (IAEG) – Australian Geomechanics Society". australiangeomechanics.org. Retrieved 2018-06-05.
2. 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. Bibcode:1978BIAEG..17....1Z. doi:10.1007/bf02634669. ISSN 1435-9529. S2CID 129723467.
3. "Hans-Cloos Medal - IAEG". iaeg.info. Retrieved 2018-06-05.
4. Knill, John (2003). "Core values: the first Hans-Cloos lecture". Bulletin of Engineering Geology and the Environment. 62 (1): 1–34. Bibcode:2003BuEGE..62....1K. doi:10.1007/s10064-002-0187-9. ISSN 1435-9529. S2CID 15106773.
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. Bibcode:2004BuEGE..63...89B. doi:10.1007/s10064-003-0217-2. ISSN 1435-9529. S2CID 130568412.
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. Bibcode:2006BuEGE..65....1C. doi:10.1007/s10064-005-0024-z. ISSN 1435-9529. S2CID 128798432.
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. S2CID 129784220.
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. Bibcode:2009BuEGE..68..145W. doi:10.1007/s10064-009-0208-z. ISSN 1435-9529. S2CID 128827726.
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. Bibcode:2011BuEGE..70..333C. doi:10.1007/s10064-011-0377-4. ISSN 1435-9529. S2CID 106837836.
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. Bibcode:2014BuEGE..73..903O. doi:10.1007/s10064-014-0605-9. ISSN 1435-9529. S2CID 129120058.
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. Bibcode:2015BuEGE..74.1087C. doi:10.1007/s10064-015-0768-z. ISSN 1435-9529. S2CID 107227198.
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. S2CID 134797865.
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". en.sklgp.com. Retrieved 2018-10-24.
14. "Photos from the IAEG Congress in San Francisco - IAEG". iaeg.info. Retrieved 2018-10-24.