LOGIN TO YOUR ACCOUNT

Username
Password
Remember Me
Or use your Academic/Social account:

CREATE AN ACCOUNT

Or use your Academic/Social account:

Congratulations!

You have just completed your registration at OpenAire.

Before you can login to the site, you will need to activate your account. An e-mail will be sent to you with the proper instructions.

Important!

Please note that this site is currently undergoing Beta testing.
Any new content you create is not guaranteed to be present to the final version of the site upon release.

Thank you for your patience,
OpenAire Dev Team.

Close This Message

CREATE AN ACCOUNT

Name:
Username:
Password:
Verify Password:
E-mail:
Verify E-mail:
*All Fields Are Required.
Please Verify You Are Human:
fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Publisher: Sociedad Española de Geomorfología
Languages: English
Types: Unknown
Subjects: GB, TA, GE
The Baker River (Southern Chile) drains a catchment of 27,000 km2 and has a mean annual discharge of 1100 m3s-1. Since last deglaciation, the morpho-sedimentology of the Baker valley has been controlled by Outburst Floods (OFs) of different scales. We apply geomorphic mapping, stratigraphy (including radiocarbon and OSL dating) and palaeoflood hydrology to reconstruct the frequency, timing and magnitude of Holocene OFs. Geomorphic mapping reveals evidence of two Holocene alluvial terraces. The oldest (highest) contains basal gravels capped by a well-developed buried Podzolic Luvisol that was radiocarbon dated to 6160±40 BP. In this alluvial sequence, at least two major floods occurred between then and 5300 BP and at least eight major floods between 5300-2500 BP. At least three Late Holocene (post 610±30 BP) GLOF event(s) inundated upper terrace surfaces along the reach downstream the confluence of the Colonia River into the Baker River. We report on the implications of this palaeoflood research in relation to the proposed HydroAysén hydroelectric scheme.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • Alexandrovskiy, A.L., Glasko, M.P., Krenke, N.A., Chichagova. O.A. 2004. Buried soils of floodplains and paleoenvironmental changes in the Holocene.
    • Revista Mexicana de Ciencias Geológicas, 21, 9-17 Casassa, G., Leidich, J., Rivera, A., Wendt, J., Escobar, F., Guzmán, F., Carrasco, J., López, P.
    • 2008. Sudden drainage of glacial Lake Cachet 2, Patagonia. EGU conference, Santiago, Chile.
    • Dussaillant. A., Benito, G., Buytaert, W., Carling, P., Meier, C., Espinoza, F. 2010. Repeated glacial-lake outburst floods in Patagonia: An increasing hazard? Natural Hazards 54, 469-481.
    • Dyurgerov, M.B., Meier, M.F. 2005. Glaciers and the Changing Earth System: a 2004 Snapshot.
    • Institute of Arctic and Alpine Research, University of Colorado, Boulder, USA. Paper 58, 118 pp.
    • Harrison, S., Winchester, V. 2000. Nineteenth-and twentieth-century glacier fluctuations and climatic implications in the Arco and Colonia valleys, Hielo Patagónico Norte, Chile. Arct. Alp. Res. 32, 55-63.
    • Tanaka, K. 1980. Geographic contribution to a periglacial study of the Hielo Patagónico Norte with special reference to the glacial outburst originated from glacier-dammed Lago Arco, Chilean Patagonia. Centre Co Ltd, Tokyo 97 pp.
    • Winchester, V., Harrison, S. 2000. Dendrochronology and lichenometry: colonization, growth rates and dating of geomorphological events on the east side of the North Patagonian Icefield, Chile.
    • Geomorphology 34, 181-194.
  • No related research data.
  • No similar publications.

Share - Bookmark

Cite this article