Dynamic Assessment of Laguna de Apoyo by Isotopic and Geochemical Tracers

Authors

  • Heyddy Calderón Palma Centro para la Investigación en Recursos Acuáticos de Nicaragua, Universidad Nacional Autónoma de Nicaragua, Apdo. Postal 4598, Managua
  • Yelba Flores Meza Centro para la Investigación en Recursos Acuáticos de Nicaragua, Universidad Nacional Autónoma de Nicaragua, Apdo. Postal 4598, Managua

DOI:

https://doi.org/10.5377/uyc.v5i8.315

Keywords:

crater lake, geochemistry, isotopic balance

Abstract

The objective of this study was to assess flow dynamics of the Apoyo Crater lake using isotopic and geochemical tools. This crater lake of 6.6 km of diameter is 175 m deep. The lake watershed is small, with an area of about 38 km2, annual precipitation is about 1454 mm. In the last 30 years, the lake has suffered a 30m decline in water level.

Physical-chemical parameters and isotopic composition (18O y D) of the lake, springs and wells were monitored during 2006 and 2007. Despite the presence of a low permeability barrier west of the lake, geochemical results indicate groundwater contribution from NW and SW directions. Nevertheless, local recharge has not been ruled out yet.

DOI: http://dx.doi.org/10.5377/uyc.v5i8.315

Universidad y Ciencia No 8 Año 5 2010 22-26

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Published

2011-05-23

How to Cite

Palma, H. C., & Meza, Y. F. (2011). Dynamic Assessment of Laguna de Apoyo by Isotopic and Geochemical Tracers. Universidad Y Ciencia, 5(8), 22–26. https://doi.org/10.5377/uyc.v5i8.315

Issue

Vol. 5 No. 8 (2010)

Section

Articles

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Copyright © 2018 National Autonomous University of Nicaragua, Managua

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