Hydrochemical distribution patterns in stream waters, Trøndelag, central Norway

Banks, D. , Sæther, O.M., Ryghaug, P. and Reimann, C. (2001) Hydrochemical distribution patterns in stream waters, Trøndelag, central Norway. Science of the Total Environment, 267(1-3), pp. 1-21. (doi:10.1016/S0048-9697(00)00605-7)

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Abstract

A regional geochemical sampling program of stream waters has been carried out in the Nord-Trøndelag region of central Norway. This area has hitherto been little affected by regional anthropogenic sources of pollution. Hydrochemical trends appear to be dominated by interplay of two main factors: (i) input of sea salts via marine aerosols in precipitation: and (ii) geological sources (mineral weathering). Factor (i) results in a predominance of Na-Cl waters near the coast, and may also be partially responsible (via proton displacement from soil ion-exchange sites by marine cations) for lower pH values in near-coastal waters. Further inland, the importance of marine salts decreases and waters become dominantly Ca-(Na)-HCO3. Sub-regional anomalies in geochemical maps for, e.g. nitrate and copper may indicate anthropogenic sources for these parameters from agriculture or mining activities.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Banks, Mr David
Authors: Banks, D., Sæther, O.M., Ryghaug, P., and Reimann, C.
Subjects:Q Science > QD Chemistry
Q Science > QE Geology
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:Science of the Total Environment
ISSN:0048-9697

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