An Overview of 14C Analysis in the Study of Groundwater

Radiocarbon - Tập 42 Số 1 - Trang 99-114 - 2000
Mebus A. Geyh1
1Section 3 – Dating and Isotope Hydrology, Institute of Joint Geoscientific Research, Hannover, Germany. Email:

Tóm tắt

This paper provides a summary overview of the current state-of-art in the radiocarbon dating of groundwater. While the use of natural 14C measurements in applied hydrogeology still presents a difficult challenge, meaningful dates can be achieved if they are determined and interpreted in conjunction with the analyses of other isotopic species that occur in the natural environment. Although 14C dating of groundwater can be, and often is, carried out as a matter of routine, any specific case study requires its own scientific design and effort. As is widely recognized, and discussed in considerable detail throughout the scientific literature, there are many hydrogeochemical reactions and/or physical processes that can alter the natural 14C enrichment measured in environmental materials. Fortunately, for fresh groundwater resources such effects are in general well defined and therefore of limited significance. The primary challenge in applied groundwater dating is with the development of the appropriate theoretical background against which 14C dates can be used to calibrate numerical analogues of the groundwater system. The hydraulic properties of each of the widely used finite-element models can be well estimated from numerous piezometric data and extrapolations. In contrast, only a few groundwater ages can be provided for the calibration of those models that are complex functions of aging mixture and sometimes also hydrochemical reactions.

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Tài liệu tham khảo

Vogel, 1963, Radioisotopes in hydrology

Olsson, 1980, Radiocarbon dating

Mook, 1976, Interpretation of environmental isotope and hydrochemical data in groundwater hydrology

10.1038/249643a0

Vogel, 1970, Isotope hydrology 1970

Tamers MA . 1967. Surface-water infiltration and groundwater movement in arid zones of Venezuela. Isotopes in Hydrology: 339–53.

Geyh MA , Sonne V . 1983. Monitoring of groundwater budget changes with isotope techniques in the NE Mainz Basin. Proceedings of the International Conference on Groundwater Resources. Plan D. p 357–65.

Geyh, 1979, Isotope hydrology 1978., 2

10.1017/S0033822200005609

Gonfiantini, 1972, Internal report.

10.1016/0022-1694(78)90144-0

Geyh, 1998, GEL-Heft 5

10.1016/0022-1694(81)90181-5

Geyh, 1991, Versuche zur 14-Altersbestimmung von Grundwasser anhand gelöster organischer Stoffe, Geol. Jb. E, 48

Ingerson, 1964, Recent research in the fields of hydrosphere, atmosphere, and nuclear geochemistry

Geyh, 1992, Radiocarbon after four decades: an interdisciplinary perspective.

10.1007/BF00623821

Geyh, 1965, Proceedings of radiocarbon and tritium dating conference., 597

Clark, 1997, Environmental isotopes in hydrogeology., 328

10.1029/WR025i010p02259

Muennich, 1968, Isotopen-Datierung von Grundwasser, Naturwissenschaften, 55

Geyer, 1993, Isotope techniques in the study of past and current environmental changes in the hydrosphere and atmosphere

10.1016/0013-9351(75)90005-5

Muennich, 1957, Messung des 14C-Gehaltes von hartem Grundwasser, Naturwissenschaften, 34

Rogojin, 1998, 14C and 234U-excess dating of groundwater in the Haifa Bay region, Israel, Radiocarbon, 40

Bath, 1979, Isotope Hydrology 1978, 2

Geyh, 1984, Isotope hydrology 1983., 499

Geyh, 1986, IAEA-TECDOC-381.

10.1016/0016-7037(78)90108-4

10.1144/GSL.QJEG.1977.010.02.02

10.1029/WR015i002p00399

Plummer, 1994, Geological survey water resources investigations report, 94–4169, 99

Groening, 1993, Isotope techniques in the studying past and current environmental changes in the hydrosphere and the atmosphere.

10.1073/pnas.40.5.285

Verhagen, 1991, Development of a methodology, 164

Geyh, 1994, Late Quaternary chronology and paleoclimates of the eastern Mediterranean.

Harrington GA , Herczeg AL . 1999. Estimating groundwater 14C ages in the arid TI-Tree Basin, central Australia: use of 87Sr/86Sr to constrain sources of inorganic carbon. International Symposium on Isotope Techniques in Water Resources Development and Management: IAEA-SM-361/89P. Vienna, Austria; 10–14 May 1999.

10.1017/S0033822200012534

10.1016/0883-2927(93)90077-T

Wigley, 1977, Carbon-14 dating of groundwater from closed and open systems, Water Resources Research, 11

Clark, 1996, Isotope in water resources management, 43

Geyh, 1972, Basic studies in hydrology and 14C and 3H measurements, 24th Proceedings of the International Geology Congress, 11

Maloszewski, 1984, Isotope hydrology 1983

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Radiocarbon

Tập 42 Số 1

99-114

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