Fossil groundwater research
Jasechko, S., Perrone, D., Befus, K. M., Cardenas, M. B., Ferguson, G., Gleeson, T., Luijendijk, E., McDonnell, J. J., Taylor, R. G., Wada, Y., Kirchner, J. W. Global aquifers dominated by fossil groundwaters but wells vulnerable to modern contamination. Nature Geoscience doi:10.1038/ngeo2943 (2017). [Link to paper]
The two main findings of this research project are: 1) fossil waters (at least 12,000 years old) are widespread around the globe, likely comprising the majority of all fresh unfrozen water on Earth. They are common at depths of deeper than ~100-300 metres beneath the land surface. 2) In spite of their great age, these ancient groundwaters are still vulnerable to pollution caused by modern-day land uses
Multimedia associated with fossil groundwater research:
Artesian well (i.e., a well that flows without pumping) in Laramie, Wyoming (April-2017; photo credit Kevin Befus).
[high resolution image]
Groundwater well in Khanasser, Syria. The grooves in the basalt rock are from ropes used to draw buckets of water up from deep depths (February-2006; photo credit Elco Luijendijk). [high resolution image]
Protected spring supplying freshwater in Kampala, Uganda.
(photo credit Richard Taylor) [high resolution image]
Dry-season rice crop irrigated groundwater in Barind, Bangladesh (photo credit Willy Burgess) [high resolution image]