Contrasts in storm event hydrochemistry in an acidic afforested catchment in upland Wales

C. Soulsby*

*Corresponding author for this work

Research output: Contribution to journalArticle

63 Citations (Scopus)

Abstract

The hydrochemistry of stream water in an acidic afforested catchment in the Welsh uplands was monitored routinely between 1985 and 1990. Nineteen storm episodes were sampled intensively during this period. Although the general storm response of the stream can be characterised by increased concentrations of H+, Al and dissolved organic carbon (DOC), and a dilution of Ca and SiO2, the detailed hydrochemistry of individual acid episodes exhibited marked contrasts. The minimum pH reached during specific episodes ranged from 4.1 to 5.0, and peak dissolved Al concentrations varied from 9 to 44 μmol l-1. The reasons for such differences in the hydrochemical response can be identified for each individual episode by examining the complex interactions between (1) the quantity and quality of event precipitation, (2) antecedent patterns of weather and atmospheric deposition and (3) the hydrological processes which dominate the storm runoff response. The dynamic nature of catchment hydrology was found to exert a particularly strong influence on the hydrochemistry of specific acid episodes.

Original languageEnglish
Pages (from-to)159-179
Number of pages21
JournalJournal of Hydrology
Volume170
Issue number1-4
DOIs
Publication statusPublished - 31 Aug 1995

Fingerprint

hydrochemistry
catchment
acid
atmospheric deposition
dissolved organic carbon
hydrology
dilution
runoff
weather
water

ASJC Scopus subject areas

  • Water Science and Technology

Cite this

Contrasts in storm event hydrochemistry in an acidic afforested catchment in upland Wales. / Soulsby, C.

In: Journal of Hydrology, Vol. 170, No. 1-4, 31.08.1995, p. 159-179.

Research output: Contribution to journalArticle

@article{6b0702db32664823b7ffd83d8bae5e7e,
title = "Contrasts in storm event hydrochemistry in an acidic afforested catchment in upland Wales",
abstract = "The hydrochemistry of stream water in an acidic afforested catchment in the Welsh uplands was monitored routinely between 1985 and 1990. Nineteen storm episodes were sampled intensively during this period. Although the general storm response of the stream can be characterised by increased concentrations of H+, Al and dissolved organic carbon (DOC), and a dilution of Ca and SiO2, the detailed hydrochemistry of individual acid episodes exhibited marked contrasts. The minimum pH reached during specific episodes ranged from 4.1 to 5.0, and peak dissolved Al concentrations varied from 9 to 44 μmol l-1. The reasons for such differences in the hydrochemical response can be identified for each individual episode by examining the complex interactions between (1) the quantity and quality of event precipitation, (2) antecedent patterns of weather and atmospheric deposition and (3) the hydrological processes which dominate the storm runoff response. The dynamic nature of catchment hydrology was found to exert a particularly strong influence on the hydrochemistry of specific acid episodes.",
author = "C. Soulsby",
year = "1995",
month = "8",
day = "31",
doi = "10.1016/0022-1694(94)02677-4",
language = "English",
volume = "170",
pages = "159--179",
journal = "Journal of Hydrology",
issn = "0022-1694",
publisher = "Elsevier Science B. V.",
number = "1-4",

}

TY - JOUR

T1 - Contrasts in storm event hydrochemistry in an acidic afforested catchment in upland Wales

AU - Soulsby, C.

PY - 1995/8/31

Y1 - 1995/8/31

N2 - The hydrochemistry of stream water in an acidic afforested catchment in the Welsh uplands was monitored routinely between 1985 and 1990. Nineteen storm episodes were sampled intensively during this period. Although the general storm response of the stream can be characterised by increased concentrations of H+, Al and dissolved organic carbon (DOC), and a dilution of Ca and SiO2, the detailed hydrochemistry of individual acid episodes exhibited marked contrasts. The minimum pH reached during specific episodes ranged from 4.1 to 5.0, and peak dissolved Al concentrations varied from 9 to 44 μmol l-1. The reasons for such differences in the hydrochemical response can be identified for each individual episode by examining the complex interactions between (1) the quantity and quality of event precipitation, (2) antecedent patterns of weather and atmospheric deposition and (3) the hydrological processes which dominate the storm runoff response. The dynamic nature of catchment hydrology was found to exert a particularly strong influence on the hydrochemistry of specific acid episodes.

AB - The hydrochemistry of stream water in an acidic afforested catchment in the Welsh uplands was monitored routinely between 1985 and 1990. Nineteen storm episodes were sampled intensively during this period. Although the general storm response of the stream can be characterised by increased concentrations of H+, Al and dissolved organic carbon (DOC), and a dilution of Ca and SiO2, the detailed hydrochemistry of individual acid episodes exhibited marked contrasts. The minimum pH reached during specific episodes ranged from 4.1 to 5.0, and peak dissolved Al concentrations varied from 9 to 44 μmol l-1. The reasons for such differences in the hydrochemical response can be identified for each individual episode by examining the complex interactions between (1) the quantity and quality of event precipitation, (2) antecedent patterns of weather and atmospheric deposition and (3) the hydrological processes which dominate the storm runoff response. The dynamic nature of catchment hydrology was found to exert a particularly strong influence on the hydrochemistry of specific acid episodes.

UR - http://www.scopus.com/inward/record.url?scp=0028980371&partnerID=8YFLogxK

U2 - 10.1016/0022-1694(94)02677-4

DO - 10.1016/0022-1694(94)02677-4

M3 - Article

AN - SCOPUS:0028980371

VL - 170

SP - 159

EP - 179

JO - Journal of Hydrology

JF - Journal of Hydrology

SN - 0022-1694

IS - 1-4

ER -