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Use of Isotopic Data to Determine Influence of Seasonal Effects in Rivers

Abstract

In 2002 the International atomic energy agency and its Member states initiated a programme for the collection and measurement of isotopes (stable isotopes of water and tritium) in river waters. The purpose of this programme is to establish a long term database (GNIR) similar to the global database currently available for precipitation. These isotopic data provide a baseline for studying parameters in hydrologic basins that can be used to monitor any changes in the basin response due to shifts in future climatic or land use factors. Below, selected {sup 18}O and tritium data sets where measurements from several years of routine sampling are available are analysed. A ratio of the average monthly isotopic concentration divided by the average yearly concentration is used to normalize data and makes it possible to compare data from different sites. In general, high flow periods are strongly influenced by younger water whereas baseflow is primarily composed of water of greater age (probably decadal). Using this approach and flow rates, it should be possible to estimate the isotopic concentrations of baseflow. This data set will make it possible to track changes in baseflow concentrations occurring due to future changes in climate or land use. (author)
Authors:
Michel, R. L.; [1]  Aggarwal, P. K.; Araguas Araguas, L.; Newman, B.; Kurttas, T. [2] 
  1. US Geological Survey, Menlo Park, CA (United States)
  2. International Atomic Energy Agency, Vienna (Austria)
Publication Date:
Jul 15, 2013
Product Type:
Conference
Report Number:
IAEA-CN-186/105
Resource Relation:
Conference: International Symposium on Isotopes in Hydrology, Marine Ecosystems and Climate Change Studies, Monaco (Monaco), 27 Mar - 1 Apr 2011; Other Information: 6 figs., 11 refs.; Related Information: In: Isotopes in Hydrology, Marine Ecosystems and Climate Change Studies. Vol. I. Proceedings of an International Symposium| 547 p.
Subject:
58 GEOSCIENCES; FLOW RATE; IAEA; LAND USE; MEMBER STATES; MONITORS; OXYGEN 18; RIVERS; SAMPLING; SEASONAL VARIATIONS; TRITIUM; WATER
OSTI ID:
22122070
Research Organizations:
International Atomic Energy Agency, Department of Nuclear Sciences and Applications, Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ISSN 0074-1884; ISBN 978-92-0-135610-9; TRN: XA13R0827078181
Availability:
Also available on-line: http://www-pub.iaea.org/MTCD/publications/PDF/Pub1580_vol1_web.pdf; Enquiries should be addressed to IAEA, Marketing and Sales Unit, Publishing Section, E-mail: sales.publications@iaea.org; Web site: http://www.iaea.org/books
Submitting Site:
INIS
Size:
page(s) 203-210
Announcement Date:
Aug 27, 2013

Citation Formats

Michel, R. L., Aggarwal, P. K., Araguas Araguas, L., Newman, B., and Kurttas, T. Use of Isotopic Data to Determine Influence of Seasonal Effects in Rivers. IAEA: N. p., 2013. Web.
Michel, R. L., Aggarwal, P. K., Araguas Araguas, L., Newman, B., & Kurttas, T. Use of Isotopic Data to Determine Influence of Seasonal Effects in Rivers. IAEA.
Michel, R. L., Aggarwal, P. K., Araguas Araguas, L., Newman, B., and Kurttas, T. 2013. "Use of Isotopic Data to Determine Influence of Seasonal Effects in Rivers." IAEA.
@misc{etde_22122070,
title = {Use of Isotopic Data to Determine Influence of Seasonal Effects in Rivers}
author = {Michel, R. L., Aggarwal, P. K., Araguas Araguas, L., Newman, B., and Kurttas, T.}
abstractNote = {In 2002 the International atomic energy agency and its Member states initiated a programme for the collection and measurement of isotopes (stable isotopes of water and tritium) in river waters. The purpose of this programme is to establish a long term database (GNIR) similar to the global database currently available for precipitation. These isotopic data provide a baseline for studying parameters in hydrologic basins that can be used to monitor any changes in the basin response due to shifts in future climatic or land use factors. Below, selected {sup 18}O and tritium data sets where measurements from several years of routine sampling are available are analysed. A ratio of the average monthly isotopic concentration divided by the average yearly concentration is used to normalize data and makes it possible to compare data from different sites. In general, high flow periods are strongly influenced by younger water whereas baseflow is primarily composed of water of greater age (probably decadal). Using this approach and flow rates, it should be possible to estimate the isotopic concentrations of baseflow. This data set will make it possible to track changes in baseflow concentrations occurring due to future changes in climate or land use. (author)}
place = {IAEA}
year = {2013}
month = {Jul}
}