Titre de série :	U.S. Geological Survey Water Supply paper, 2249
Titre :	An evaluation of trends in the acidity of precipitation and the related acidification of surface water in North America
Type de document :	texte imprimé
Auteurs :	Turk, J. T.
Mention d'édition :	United States Gouvernment Printing Office
Editeur :	United States Gouvernment Printing Office
Année de publication :	1983
ISBN/ISSN/EAN :	CI-05098
Note générale :	This report intended to critically evaluate published trend information about the chemical quality of precipitation and of dilute surface waters that may have been significantly affected by changes in precipitation quality. The results of several studies within individual geographic regions were combined to assess whether changes in chemical quality have accured. To the available data permit, several hypotheses on why trends are or are not found are evaluated. Il is beyond the scope of this study, however, to provide new data or new trend analyses of data used in previous publications.
Langues :	Anglais (eng)
Mots-clés :	Evaluation  PRECIPITATIONS  Eau de surface  Hydrologie  Pluie  Acide
Index. décimale :	551.57 Hydrométéorologie : brouillard, nuages, précipitations
Résumé :	This report intended to critically evaluate published trend information about the chemical quality of precipitation and of dilute surface waters that may have been significantly affected by changes in precipitation quality. The results of several studies within individual geographic regions were combined to assess whether changes in chemical quality have accured. To the available data permit, several hypotheses on why trends are or are not found are evaluated. Il is beyond the scope of this study, however, to provide new data or new trend analyses of data used in previous publications.
Note de contenu :	This report intended to critically evaluate published trend information about the chemical quality of precipitation and of dilute surface waters that may have been significantly affected by changes in precipitation quality. The results of several studies within individual geographic regions were combined to assess whether changes in chemical quality have accured. To the available data permit, several hypotheses on why trends are or are not found are evaluated. Il is beyond the scope of this study, however, to provide new data or new trend analyses of data used in previous publications.

U.S. Geological Survey Water Supply paper, 2249. An evaluation of trends in the acidity of precipitation and the related acidification of surface water in North America [texte imprimé] / Turk, J. T.  . -  United States Gouvernment Printing Office . - United States Gouvernment Printing Office, 1983.
ISSN : CI-05098
This report intended to critically evaluate published trend information about the chemical quality of precipitation and of dilute surface waters that may have been significantly affected by changes in precipitation quality. The results of several studies within individual geographic regions were combined to assess whether changes in chemical quality have accured. To the available data permit, several hypotheses on why trends are or are not found are evaluated. Il is beyond the scope of this study, however, to provide new data or new trend analyses of data used in previous publications.
Langues : Anglais (eng)

Mots-clés :	Evaluation  PRECIPITATIONS  Eau de surface  Hydrologie  Pluie  Acide
Index. décimale :	551.57 Hydrométéorologie : brouillard, nuages, précipitations
Résumé :	This report intended to critically evaluate published trend information about the chemical quality of precipitation and of dilute surface waters that may have been significantly affected by changes in precipitation quality. The results of several studies within individual geographic regions were combined to assess whether changes in chemical quality have accured. To the available data permit, several hypotheses on why trends are or are not found are evaluated. Il is beyond the scope of this study, however, to provide new data or new trend analyses of data used in previous publications.
Note de contenu :	This report intended to critically evaluate published trend information about the chemical quality of precipitation and of dilute surface waters that may have been significantly affected by changes in precipitation quality. The results of several studies within individual geographic regions were combined to assess whether changes in chemical quality have accured. To the available data permit, several hypotheses on why trends are or are not found are evaluated. Il is beyond the scope of this study, however, to provide new data or new trend analyses of data used in previous publications.