Improved regional groundwater flow modelling using geochemical and isotopic constraints

A.A. Cronin, Y.S. Yang, R M Kalin

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

Previous groundwater flow modelling of the Triassic Sherwood sandstone aquifer in Northern Ireland by Yang et al. (2000) highlighted uncertainties in the conceptual hydrogeological. model. Geochemical and isotopic sampling of groundwater was undertaken in the study area to better refine this conceptual model. Subsequent geochemical modelling provided useful insights into the recharge mechanisms occurring in the region. This work describes new flow modelling combining the findings from the previous flow modelling studies and geochemical/isotopic investigations. This incorporated alterations to the conceptual model and the use of 'soft data' to constrain a least-squares inverse modelling process. The new inverse modelling provided improved output from previous work. Recharge to the Lagan Valley was modelled as similar to 43,000 m(3)/d with groundwater flow velocities in the range 15 to 75 m/yr. Good correlation between MODPATH particle tracking travel times and geochemical residence times was achieved. This work highlights the importance of combining numerical flow modelling with geochemical/isotopic analysis in hydrogeology.
LanguageEnglish
Title of host publication New approaches characterizing groundwater flow
EditorsK.P. Seiler, S. Wohnlich
Place of PublicationLeiden
Pages283-287
Number of pages5
Volume1&2
Publication statusPublished - 2001
Event31st International-Association-of-Hydrogeologists Congress - Munich, Germany
Duration: 10 Sep 200114 Sep 2001

Conference

Conference31st International-Association-of-Hydrogeologists Congress
CountryGermany
CityMunich
Period10/09/0114/09/01

Fingerprint

flow modeling
groundwater flow
recharge
modeling
isotopic analysis
hydrogeology
flow velocity
travel time
residence time
Triassic
sandstone
aquifer
valley
groundwater
sampling

Keywords

  • improved
  • regional
  • groundwater flow
  • modelling
  • geochemical
  • isotopic
  • constraints

Cite this

Cronin, A. A., Yang, Y. S., & Kalin, R. M. (2001). Improved regional groundwater flow modelling using geochemical and isotopic constraints. In K. P. Seiler, & S. Wohnlich (Eds.), New approaches characterizing groundwater flow (Vol. 1&2, pp. 283-287). Leiden.
Cronin, A.A. ; Yang, Y.S. ; Kalin, R M. / Improved regional groundwater flow modelling using geochemical and isotopic constraints. New approaches characterizing groundwater flow. editor / K.P. Seiler ; S. Wohnlich. Vol. 1&2 Leiden, 2001. pp. 283-287
@inproceedings{c697f7b113cb4819b10ab830ef1d7335,
title = "Improved regional groundwater flow modelling using geochemical and isotopic constraints",
abstract = "Previous groundwater flow modelling of the Triassic Sherwood sandstone aquifer in Northern Ireland by Yang et al. (2000) highlighted uncertainties in the conceptual hydrogeological. model. Geochemical and isotopic sampling of groundwater was undertaken in the study area to better refine this conceptual model. Subsequent geochemical modelling provided useful insights into the recharge mechanisms occurring in the region. This work describes new flow modelling combining the findings from the previous flow modelling studies and geochemical/isotopic investigations. This incorporated alterations to the conceptual model and the use of 'soft data' to constrain a least-squares inverse modelling process. The new inverse modelling provided improved output from previous work. Recharge to the Lagan Valley was modelled as similar to 43,000 m(3)/d with groundwater flow velocities in the range 15 to 75 m/yr. Good correlation between MODPATH particle tracking travel times and geochemical residence times was achieved. This work highlights the importance of combining numerical flow modelling with geochemical/isotopic analysis in hydrogeology.",
keywords = "improved, regional, groundwater flow, modelling, geochemical, isotopic, constraints",
author = "A.A. Cronin and Y.S. Yang and Kalin, {R M}",
year = "2001",
language = "English",
isbn = "902651848X",
volume = "1&2",
pages = "283--287",
editor = "K.P. Seiler and S. Wohnlich",
booktitle = "New approaches characterizing groundwater flow",

}

Cronin, AA, Yang, YS & Kalin, RM 2001, Improved regional groundwater flow modelling using geochemical and isotopic constraints. in KP Seiler & S Wohnlich (eds), New approaches characterizing groundwater flow. vol. 1&2, Leiden, pp. 283-287, 31st International-Association-of-Hydrogeologists Congress, Munich, Germany, 10/09/01.

Improved regional groundwater flow modelling using geochemical and isotopic constraints. / Cronin, A.A.; Yang, Y.S.; Kalin, R M.

New approaches characterizing groundwater flow. ed. / K.P. Seiler; S. Wohnlich. Vol. 1&2 Leiden, 2001. p. 283-287.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

TY - GEN

T1 - Improved regional groundwater flow modelling using geochemical and isotopic constraints

AU - Cronin, A.A.

AU - Yang, Y.S.

AU - Kalin, R M

PY - 2001

Y1 - 2001

N2 - Previous groundwater flow modelling of the Triassic Sherwood sandstone aquifer in Northern Ireland by Yang et al. (2000) highlighted uncertainties in the conceptual hydrogeological. model. Geochemical and isotopic sampling of groundwater was undertaken in the study area to better refine this conceptual model. Subsequent geochemical modelling provided useful insights into the recharge mechanisms occurring in the region. This work describes new flow modelling combining the findings from the previous flow modelling studies and geochemical/isotopic investigations. This incorporated alterations to the conceptual model and the use of 'soft data' to constrain a least-squares inverse modelling process. The new inverse modelling provided improved output from previous work. Recharge to the Lagan Valley was modelled as similar to 43,000 m(3)/d with groundwater flow velocities in the range 15 to 75 m/yr. Good correlation between MODPATH particle tracking travel times and geochemical residence times was achieved. This work highlights the importance of combining numerical flow modelling with geochemical/isotopic analysis in hydrogeology.

AB - Previous groundwater flow modelling of the Triassic Sherwood sandstone aquifer in Northern Ireland by Yang et al. (2000) highlighted uncertainties in the conceptual hydrogeological. model. Geochemical and isotopic sampling of groundwater was undertaken in the study area to better refine this conceptual model. Subsequent geochemical modelling provided useful insights into the recharge mechanisms occurring in the region. This work describes new flow modelling combining the findings from the previous flow modelling studies and geochemical/isotopic investigations. This incorporated alterations to the conceptual model and the use of 'soft data' to constrain a least-squares inverse modelling process. The new inverse modelling provided improved output from previous work. Recharge to the Lagan Valley was modelled as similar to 43,000 m(3)/d with groundwater flow velocities in the range 15 to 75 m/yr. Good correlation between MODPATH particle tracking travel times and geochemical residence times was achieved. This work highlights the importance of combining numerical flow modelling with geochemical/isotopic analysis in hydrogeology.

KW - improved

KW - regional

KW - groundwater flow

KW - modelling

KW - geochemical

KW - isotopic

KW - constraints

M3 - Conference contribution book

SN - 902651848X

VL - 1&2

SP - 283

EP - 287

BT - New approaches characterizing groundwater flow

A2 - Seiler, K.P.

A2 - Wohnlich, S.

CY - Leiden

ER -

Cronin AA, Yang YS, Kalin RM. Improved regional groundwater flow modelling using geochemical and isotopic constraints. In Seiler KP, Wohnlich S, editors, New approaches characterizing groundwater flow. Vol. 1&2. Leiden. 2001. p. 283-287