You need JavaScript to view this

Stable Isotopic Composition of Rainfall in Western Cameroon

Abstract

Monthly rainfall collected at the douala station (Western cameroon) from 2006 to 2008 was analysed for oxygen-18 and deuterium content. The dataset, which is now integrated into the GNIP database, was compared to the local groundwater record in order to define the input function of regional hydrosystems. The isotope data displays a wide range of values from -0.59 to -6.14 per mille for oxygen-18 and from -7.75 to -38.8 per mille for deuterium, closely following the GMWL (global Meteoric Water line), suggesting that rain formation processes occurred under isotopic equilibrium conditions between the condensate and the corresponding vapour. No significant evaporation tendency was found. The comparison with the previous studies in the area provides a realistic pattern of isotope concentrations in both surface and groundwater throughout Cameroon. (author)
Authors:
Ketchemen-Tandia, B.; Ngo Boum, S.; Ebonji Seth, C. R.; Nkoue Ndong, G. R.; Wonkam, C.; [1]  Huneau, F.; [2]  Celle-Jeanton, H. [3] 
  1. Universite de Douala, Douala (Cameroon)
  2. Universite de Bordeaux, EA Georessources and Environnement, Talence (France)
  3. Clermont Universite, Clermont-Ferrand (France)
Publication Date:
Jul 15, 2013
Product Type:
Conference
Report Number:
IAEA-CN-186/63
Resource Relation:
Conference: International Symposium on Isotopes in Hydrology, Marine Ecosystems and Climate Change Studies, Monaco (Monaco), 27 Mar - 1 Apr 2011; Other Information: 3 figs, 15 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; CAMEROON; COMPARATIVE EVALUATIONS; CONDENSATES; DEUTERIUM; EQUILIBRIUM; EVAPORATION; GROUND WATER; ISOTOPE RATIO; OXYGEN 18; RAIN; SURFACES; VAPORS
OSTI ID:
22122059
Research Organizations:
International Atomic Energy Agency, Department of Nuclear Sciences and Applications, Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Contract Number:
Project CMR/8/008
Other Identifying Numbers:
Other: ISSN 0074-1884; ISBN 978-92-0-135610-9; TRN: XA13R0816078170
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) 113-120
Announcement Date:
Aug 27, 2013

Citation Formats

Ketchemen-Tandia, B., Ngo Boum, S., Ebonji Seth, C. R., Nkoue Ndong, G. R., Wonkam, C., Huneau, F., and Celle-Jeanton, H. Stable Isotopic Composition of Rainfall in Western Cameroon. IAEA: N. p., 2013. Web.
Ketchemen-Tandia, B., Ngo Boum, S., Ebonji Seth, C. R., Nkoue Ndong, G. R., Wonkam, C., Huneau, F., & Celle-Jeanton, H. Stable Isotopic Composition of Rainfall in Western Cameroon. IAEA.
Ketchemen-Tandia, B., Ngo Boum, S., Ebonji Seth, C. R., Nkoue Ndong, G. R., Wonkam, C., Huneau, F., and Celle-Jeanton, H. 2013. "Stable Isotopic Composition of Rainfall in Western Cameroon." IAEA.
@misc{etde_22122059,
title = {Stable Isotopic Composition of Rainfall in Western Cameroon}
author = {Ketchemen-Tandia, B., Ngo Boum, S., Ebonji Seth, C. R., Nkoue Ndong, G. R., Wonkam, C., Huneau, F., and Celle-Jeanton, H.}
abstractNote = {Monthly rainfall collected at the douala station (Western cameroon) from 2006 to 2008 was analysed for oxygen-18 and deuterium content. The dataset, which is now integrated into the GNIP database, was compared to the local groundwater record in order to define the input function of regional hydrosystems. The isotope data displays a wide range of values from -0.59 to -6.14 per mille for oxygen-18 and from -7.75 to -38.8 per mille for deuterium, closely following the GMWL (global Meteoric Water line), suggesting that rain formation processes occurred under isotopic equilibrium conditions between the condensate and the corresponding vapour. No significant evaporation tendency was found. The comparison with the previous studies in the area provides a realistic pattern of isotope concentrations in both surface and groundwater throughout Cameroon. (author)}
place = {IAEA}
year = {2013}
month = {Jul}
}