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On the combination of isotope hydrogeology with regional flow and transport modelling

Thesis/Dissertation:

Abstract

Many different methods and tools can be used when trying to improve the information basis on which decisions are made for maintaining a quantitatively and qualitatively safe, long-term use of groundwater resources. In this thesis, classical hydrogeological examinations, hydrochemical investigations, environmental isotope studies, computerized groundwater flow modelling and radioisotope transport modelling have been applied to the large system of reservoirs in the sedimentary deposits of southwestern Scania, Sweden. The stable isotopes {sup 2}H, {sup 18}O and {sup 13}C and the radioactive {sup 3}H and {sup 14}C have been measured and the results obtained can improve the estimations of the periods of recharge and the average circulation times of the groundwater reservoirs studied. A groundwater flow model based on finite difference techniques and a continuum approach has been modified by data from traditional hydrogeological studies. The computer code, NEWSAM, has been used to simulate steady-state and transient isotope transport in the area studied, taking into account advective transport with radioactive decay. The interacting groundwater resevoirs studied have been represented by a three-dimensional system of grids in the numerical model. A major merit of this combination of isotope hydrogeology and regional flow and transport modelling is that the isotope transport simulations help  More>>
Authors:
Publication Date:
Dec 31, 1992
Product Type:
Thesis/Dissertation
Report Number:
LUTVDG-TVTG-1006
Reference Number:
SCA: 540300; PA: AIX-24:005686; SN: 93000930827
Resource Relation:
Other Information: TH: Doctoral diss. (TeknD).; PBD: 1992
Subject:
54 ENVIRONMENTAL SCIENCES; GROUND WATER; HYDROLOGY; COMPUTERIZED SIMULATION; CONTAMINATION; ENVIRONMENT; ENVIRONMENTAL TRANSPORT; EXPERIMENTAL DATA; GEOLOGY; N CODES; SWEDEN; TRACER TECHNIQUES; WATER INFLUX; WATER POLLUTION; 540300; ENVIRONMENTAL SCIENCES, AQUATIC
OSTI ID:
10118776
Research Organizations:
Lund Univ. (Sweden). Dept. of Engineering Geology
Country of Origin:
Sweden
Language:
English
Other Identifying Numbers:
Other: ON: DE93611358; TRN: SE9200329005686
Availability:
OSTI; NTIS; INIS
Submitting Site:
SWDN
Size:
[209] p.
Announcement Date:
Jun 30, 2005

Thesis/Dissertation:

Citation Formats

Barmen, G A. On the combination of isotope hydrogeology with regional flow and transport modelling. Sweden: N. p., 1992. Web.
Barmen, G A. On the combination of isotope hydrogeology with regional flow and transport modelling. Sweden.
Barmen, G A. 1992. "On the combination of isotope hydrogeology with regional flow and transport modelling." Sweden.
@misc{etde_10118776,
title = {On the combination of isotope hydrogeology with regional flow and transport modelling}
author = {Barmen, G A}
abstractNote = {Many different methods and tools can be used when trying to improve the information basis on which decisions are made for maintaining a quantitatively and qualitatively safe, long-term use of groundwater resources. In this thesis, classical hydrogeological examinations, hydrochemical investigations, environmental isotope studies, computerized groundwater flow modelling and radioisotope transport modelling have been applied to the large system of reservoirs in the sedimentary deposits of southwestern Scania, Sweden. The stable isotopes {sup 2}H, {sup 18}O and {sup 13}C and the radioactive {sup 3}H and {sup 14}C have been measured and the results obtained can improve the estimations of the periods of recharge and the average circulation times of the groundwater reservoirs studied. A groundwater flow model based on finite difference techniques and a continuum approach has been modified by data from traditional hydrogeological studies. The computer code, NEWSAM, has been used to simulate steady-state and transient isotope transport in the area studied, taking into account advective transport with radioactive decay. The interacting groundwater resevoirs studied have been represented by a three-dimensional system of grids in the numerical model. A major merit of this combination of isotope hydrogeology and regional flow and transport modelling is that the isotope transport simulations help to demonstrate where zones particularly vulnerable to pollution are situated. These locations are chiefly the results of the hydrogeological characteristics traditionally examined, but they are revealed by means of the transport model. Subsequent, more detailed investigations can then be focussed primarily on these vulnerable zones. High contents of radioisotopes in the main aquifer of southwestern Scania may indicate that groundwater withdrawals have stimulated recharge from shallow aquifers and surface waters and that the risk of pollution has increased. (196 refs.) (au).}
place = {Sweden}
year = {1992}
month = {Dec}
}