Meny

Javascript verkar inte påslaget? - Vissa delar av Lunds universitets webbplats fungerar inte optimalt utan javascript, kontrollera din webbläsares inställningar.
Du är här

Aquifer interactions with a polluted mountain river of Nicaragua

Författare:
Publiceringsår: 2008
Språk: Engelska
Sidor: 2264-2273
Publikation/Tidskrift/Serie: Hydrological Processes
Volym: 22
Nummer: 13
Dokumenttyp: Artikel
Förlag: John Wiley & Sons, Ltd

Sammanfattning

The interactions between a stream and nearby shallow aquifers were investigated in a mountain basin being polluted by mercury released during mining in central Nicaragua. Hourly data series of water levels and temperatures were analysed using cross-correlation. Resistivity imaging was used to map the subsurface and to complement the hydrological data interpretation. The results show the complex hydrogeological conditions that characterize the region, with weathering and fractured rock as main contributors to groundwater transport. The resistivity images suggest the presence of two vertical dykes perpendicular to the stream, and zones rich in clay. The data series indicate a rapid response from the aquifers to recharge events, followed by immediate discharge on a yearly basis. Furthermore, alternating periods of stream infiltration and aquifer discharge were identified. This work demonstrates that surface water pollution is a threat to groundwater quality in the area.

Disputation

Nyckelord

  • Earth and Environmental Sciences
  • groundwater
  • pollution
  • Nicaragua
  • water
  • surface
  • cross-correlation
  • time series analysis
  • resistivity imaging

Övriga

Published
Yes
  • ISSN: 0885-6087

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen