Monday, 18 February 2013

Some history ...

Searching for literature on GOOGLE SCHOLAR or WOK links to the website of the journal like JOH  Journal of Hydrology. After reading the abstract one buys the paper of interest for too much money. Only after realising it was the wrong article. Looking back, before the digital revolution, one didn't log in but ordered a printed paper version. 
Cleaning my office and looking through the pile of documents i found an old paper I got from a colleague some years ago.A historic paper and leap forward in isotope hydrology. Skalsh and Farvolden (1976) demonstrated with stable isotopes that the hydro graph is more than event water only. 

Paper version of the article of Skalsh and Farvolden (1976)



Snow campus III:Wonders of Winter...

After last post Wonders of Winters here another snow campus related phenomenon:

To repeat once more :) For a summer hydrologist winter is the "boring" time. Depending on the catchment location precipitation is solid and the catchment is in deep winter sleep without any reaction with only some liters of base flow. zzzz zzzz zzz 

Warm inside with a warm cup of coffee and x-mas sweets its nice to work on last seasons field data and see what happened. While working and thinking some times the falling snow flakes divert the attention and makes one wonder. Not only the light isotopic values of precipitation but even more: the self organizing abilities of water and the human factor. So looking outside the office window one sees ...   
... the world covered nicely under a layer of fluffy white stuff. All the world? No, all beside where human structures like sewer pipes. They releasing enough energy to melt the snow. Nicely seen in the picture below. Arrows in orange  are potholes and the green line with blue arrow is the sewer-pipe ~ 50cm below the grass. 

Picture showing the snow free area where a sewer pipe is.

Friday, 25 January 2013

Interesting hydro news



Two interesing hydro related articles in the web.

1) Mr. Snowman can  can't save us from flooding:

"Ideally, if everybody built themselves a snowman that will slow the thaw down a bit," said Roy Stokes, a spokesman for the agency. Check 4 full @ GUARDIAN
by Bill Watterson



Researchers TU/e together with researchers at the Hong Kong Polytechnic
University (PolyU), have developed a special treatment for cotton fabric that
allows the cotton to absorb exceptional amounts of water from misty air:
340 % of its own weight. What makes this 'coated cotton' so interesting is
that the cotton releases the collected water by itself, as it gets warmer. This
property makes of the coated cotton materials a potential solution to
provide water to the desert regions, for example for agricultural purposes.
The results of this research will be published next month in the scientific
journal Advanced Materials. Check 4 full @ TUEindhoven