UNESCO Working Group on Land Subsidence

“Land Subsidence” was included in the UNESCO programme of the International Hydrological Decade (IHD), 1965–1974 and an ad hoc working group on land subsidence was formed. In 1975 subsidence was maintained under the framework of the UNESCO IHP (subproject 8.4: “Investigation of Land Subsidence due to Groundwater Exploitation”) and UNESCO IHP formerly codified the Working Group on Land Subsidence (WGLS). From 2018 the Working Group has become a UNESCO initiative changing its name to UNESCO Land Subsidence International Initiative (LASII). The missions of the WGLS are:[1]

  • Improve scientific and technical knowledge needed to identify and characterize threats related to natural and anthropogenic land subsidence.
  • Stimulate and enable international exchange of information to sustenance sustainable groundwater resources development in areas susceptible to land subsidence through:
  1. design, implementation of mitigation actions as well as well as risk assessment.
  2. proposal for new effective resource-management policies.


Composition of the UNESCO Working Group on Land Subsidence

The Intergovernmental Council for the International Hydrological Programme (IHP) created a Working Group on Land Subsidence for liaison of IHP subproject 8.4, "Investigation on land subsidence due to ground-water exploitation." in April 1975.[2] This first WGLS was composed by:

Currently, the WGLS comprises 20 subsidence experts from 12 countries (i.e. USA, Mexico, The Netherlands, Poland, Spain, Italy, Egypt, China, Japan, Thailand, Taiwan and Pakistan) and a UNESCO–IHP representative. Of the 18 subsidence experts, 16 are members and 4 are observers.

Annual Meeting WGLS 2015


Activities of the UNESCO Working Group on Land Subsidence

Past, current and planned activities of the UNESCO–IHP WGLS are primarily focused on its mission to enhance scientific/technical knowledge exchange and promote/facilitate international exchange of information regarding natural and anthropogenic subsidence processes and the sustainable development of our natural resources in areas susceptible to subsidence. Some of the fairly recent past and current activities, beyond the regular efforts to convene the international subsidence symposia, consist on other networking, publishing, research and programmatic endeavors. Jointly with UNESCO IHP, IAHS as well as other scientific organizations, the UNESCO WGLS has organized nine International Symposia on Land Subsidence in different countries from Asia, Europe and North America.

  • Tokyo, Japan (1969)[3]
  • Anaheim, USA (1977)[4]
  • Venice, Italy (1986)[5]
  • Houston, USA (1991)[6]
  • The Hague, Netherlands (1995)[7]
  • Ravenna, Italy (2000)[8]
  • Shanghai, China (2005)[9]
  • Querétaro, México (2010)[10]
  • Nagoya, Japan (2015)[11]

The proceedings of the nine published symposia jointly with two companion books contain relevant references of land subsidence research and case studies that cover anthropogenic and natural land subsidence processes worldwide.

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See also

References
  1. D.L. Galloway, P. Teatini, D. Carreón, S. Ye (2016). The UNESCO–IHP Working Group on Land Subsidence: Four Decades of International Contributions to Hydrogeological Related Subsidence Research and Knowledge Exchange. RAUGM2016, Puerto Vallarta, 30 October-4 November 2016.
  2. Poland, J.F. 1984. Guidebook to studies of land subsidence due to ground-water withdrawal. United Nations Educational, Scientific and Cultural Organization, Chelsea, 340.
  3. Tison, L. J., ed. (1969) Land Subsidence—Proceedings of the Tokyo Symposium, September 1969, vols 1–2. IAHS Publs 88–89, 661 p., http://iahs.info/Publications-News.do.
  4. IAHS (1977) Proceedings of the Second International Symposium on Land Subsidence (Anaheim, California, December 1976). IAHS Publ. 121, 669 p., http://iahs.info/Publications-News.do
  5. Johnson, A. I., Carbognin, L.. Ubertini, L., eds. (1986) Land Subsidence (Proceedings of the Third International Symposium on Land Subsidence, Venice, Italy, March 1984). IAHS Publ. 151, 939 p., http://iahs.info/Publications-News.do.
  6. Johnson, A. I. ed. (1991) Land Subsidence (Proceedings of the Fourth International Symposium on Land Subsidence, May 1991, Houston, Texas). IAHS Publ. 200, 690 p., http://iahs.info/Publications-News.do.
  7. Barends, F. B. J., Brouwer, F. J. J.. Schröder, F. H., eds. (1995) Land Subsidence; Fluid Withdrawal, Solid Extraction, Theory and Modelling, Environmental Effects and Remedial Measures (Proc. Fifth Intl. Symposium on Land Subsidence, October 1995, The Hague, Netherlands). IAHS Publ. 234, http://iahs.info/Publications-News.do.
  8. Carbognin, L., Gambolati, G., Johnson, A.I., eds. (2000) Land Subsidence; Measuring and Monitoring, Theory and Modelling (Proceedings of the Sixth International Symposium on Land Subsidence, Ravenna, Italy, September 2000), vol. 1 (384 p.), vol. 2 (433 p.), Padova, Italy, La Garagola.
  9. Zhang, A., Gong, S., Carbognin, L., Johnson, A. I., eds. (2005) Land Subsidence—Proceedings of the 7th International Symposium on Land Subsidence, October 2005. Shanghai, China), vols 1–2. Shanghai Scientific & Technical Publishers, Shanghai, PRC, 918 p.
  10. Carreón-Freyre, D., Cerca, M., Galloway, D. L., Silva-Corona, J. J., eds. (2010) Land subsidence, associated hazards and the role of natural resources development (Proceedings of the Eighth International Symposium On Land Subsidence, October 2010, Queretaro, Mexico). IAHS Publ. 339, 522 p., http://iahs.info/Publications-News.do.
  11. Daito, K., Galloway, D. L., eds. (2015) Prevention and mitigation of natural and anthropogenic hazards due to land subsidence (Proceedings of the Ninth International Symposium On Land Subsidence, November 2015, Nagoya, Japan). Proceedings of IAHS 372, Copernicus, XXp., http://iahs.info/Publications-News.do.
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