Hi Barret, my colleague Jan Franssen at Univerité de Montreal (https://www.researchgate.net/profile/Jan_Franssen) and  Normand Bergeron (https://www.researchgate.net/profile/Normand_Bergeron) at INRS are working on this topic. Very interesting. 

Daniel, Thanks. I know Jan and Normand a bit, and I'll send them a note.

I believe using a HD Infra-red camera could be used to see the cold springs. I have one at my lab. Let me know if you'd like to collaborate on this.

Hey Barret,

I'm not sure if it's 100% what you are talking about , but have you seen Hoehn and Cirpka (2006) in HESS? 

Title:

"Assessing residence times of hyporheic ground water in two alluvial flood plains of the Southern Alps using water temperature and tracers"

Hi Dylan,

Thanks for suggesting that paper. Actually Cirpka's lab has a couple related papers out. The flow regimes are different than what I have in mind, but the math is somewhat related, so I have considered those papers.

The most related paper that I can find (just read it carefully yesterday) is one by Andrew Luhmann and others in Groundwater:

"Classification of Thermal Patterns at Karst Springs and Cave Streams"

The concepts are clearly expressed, but it is very qualitative. It is also focused on karst systems rather than porous media.

I should also mention that their very recent and impressive HESS paper is quite quantitative. However, for my field settings, I am more interested in porous media than karst systems. 

http://www.hydrol-earth-syst-sci.net/19/137/2015/hess-19-137-2015.pdf

Hi  Barret,

We didn't look at residence time or transient temperatures but Steve Grasby and I published a paper in Geofluids in 2011 that looked at the geometry problem and transition from conduction to advection.  Nearly all the springs we looked at all deep and presumably had longer residence times.  It would be interesting to see how this would play out for shallower systems.

Article Thermal springs and heat flow in North America

Hi Grant,

Thanks! That looks very interesting. I will take a closer look and hopefully gain a few ideas.

Hello colleague,

We measured groundwater temperatures in wells near a river which is subject to tidal effects. We found that temperatures in the groundwater wells fluctuate periodically as an indicator of tidal intrusion. The article is below: 

Su et al., International J. Waste Resources, 4:3, 2014

http://dx.doi.org/10.4172/2252-5211.1000148

Also M. P. Anderson published a paper entitled "Heat as a ground water tracer", Ground Water 43(6), 951-968, 2005.

cheers

ns

Thanks Ninghu - your article looks very interesting!

Hi Barret,

we studied long term trends in spring temperatures in Scandinavia. We didn't do any numerical transit time modelling at the sites, but reported a relationship between spring temperature trends and size of the parent aquifer (doi: 10.1111/gcb.13067).

I realize the paper is not on the level of process detail you are working on, but I think this is an interesting long term dataset on spring temperatures.

Cheers,

Pertti

Thanks Pertti! I've read that paper, and it's a very impressive dataset and analysis.

Kindly refer:

Geothermal , Geochemical.........NC hills Assam,Dece 1982, Sharma, Saxena and others.

Thanks!