Articles | Volume 20, issue 11
https://doi.org/10.5194/hess-20-4439-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/hess-20-4439-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
03 Nov 2016
Research article |
| 03 Nov 2016
Solar-forced diurnal regulation of cave drip rates via phreatophyte evapotranspiration
Katie Coleborn
CORRESPONDING AUTHOR
Connected Waters Initiative Research Centre, UNSW Australia, Kensington NSW 2052, Australia
School of Biological, Earth and Environmental Sciences, UNSW Australia, Kensington NSW 2052, Australia
Gabriel C. Rau
Connected Waters Initiative Research Centre, UNSW Australia, Kensington NSW 2052, Australia
Water Research Laboratory, School of Civil and Environmental Engineering, Manly Vale NSW 2093, Australia
Mark O. Cuthbert
School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, B15 2TT, UK
Andy Baker
Connected Waters Initiative Research Centre, UNSW Australia, Kensington NSW 2052, Australia
School of Biological, Earth and Environmental Sciences, UNSW Australia, Kensington NSW 2052, Australia
Owen Navarre
School of Biological, Earth and Environmental Sciences, UNSW Australia, Kensington NSW 2052, Australia
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Our current understanding of wildfires on Earth is filled with knowledge gaps. One reason for this is our poor record of fire in natural archives. We open the possibility for speleothems to be "a missing piece to the fire-puzzle". We find by effecting surface evaporation and transpiration rates, wildfires can have a multi-year impact on speleothem, forming dripwater hydrology and chemistry. We open a new avenue for speleothems as potential palaeo-fire archives.
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N. P. Unland, I. Cartwright, M. S. Andersen, G. C. Rau, J. Reed, B. S. Gilfedder, A. P. Atkinson, and H. Hofmann
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Short summary
This is the first observation of tree water use in cave drip water. Our novel time series analysis using the synchrosqueeze transform identified daily and sub-daily oscillations in drip rate. The only hypothesis consistent with hydrologic theory and the data was that the oscillations were caused by solar driven pumping by trees above the cave. We propose a new protocol for inferring karst architecture and our findings support research on the impact trees on speleothem paleoclimate proxies.
This is the first observation of tree water use in cave drip water. Our novel time series...
