A new methodological protocol for the use of dendrogeomorphological data in flood risk analysis

Díez-Herrero, A.; Ballesteros Canovas, Juan Antonio; Bodoque, J. M.; Ruiz, Virginia (2013). A new methodological protocol for the use of dendrogeomorphological data in flood risk analysis. Hydrology research, 44(2), p. 234. IWA Publishing 10.2166/nh.2012.154

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Dendrogeomorphology uses information sources recorded in the roots, trunks and branches of trees and bushes located in the fluvial system to complement (or sometimes even replace) systematic and palaeohydrological records of past floods. The application of dendrogeomorphic data sources and methods to palaeoflood analysis over nearly 40 years has allowed improvements to be made in frequency and magnitude estimations of past floods. Nevertheless, research carried out so far has shown that the dendrogeomorphic indicators traditionally used (mainly scar evidence), and their use to infer frequency and magnitude, have been restricted to a small, limited set of applications. New possibilities with enormous potential remain unexplored. New insights in future research of palaeoflood frequency and magnitude using dendrogeomorphic data sources should: (1) test the application of isotopic indicators (16O/18O ratio) to discover the meteorological origin of past floods; (2) use different dendrogeomorphic indicators to estimate peak flows with 2D (and 3D) hydraulic models and study how they relate to other palaeostage indicators; (3) investigate improved calibration of 2D hydraulic model parameters (roughness); and (4) apply statistics-based cost–benefit analysis to select optimal mitigation measures. This paper presents an overview of these innovative methodologies, with a focus on their capabilities and limitations in the reconstruction of recent floods and palaeofloods.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Geological Sciences
08 Faculty of Science > Institute of Geological Sciences > Exogenous Geology

UniBE Contributor:

Ballesteros Canovas, Juan Antonio and Ruiz, Virginia

Subjects:

500 Science > 550 Earth sciences & geology
500 Science

ISSN:

1998-9563

Publisher:

IWA Publishing

Language:

English

Submitter:

Virginia Ruiz

Date Deposited:

11 Aug 2014 08:36

Last Modified:

07 Dec 2014 08:56

Publisher DOI:

10.2166/nh.2012.154

Uncontrolled Keywords:

dendrogeomorphology, flood hazard, natural risk, palaeoflood, roughness, tree-rings

BORIS DOI:

10.7892/boris.48036

URI:

https://boris.unibe.ch/id/eprint/48036

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