Difference between revisions of "Soil Moisture - Cosmic-Ray Soil Moisture Probe Hydroinnova"
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==References== | ==References== | ||
: Desilets, D., Zreda, M., Ferre, TPA.: Nature’s neutron probe: Land surface hydrology at an elusive scale with cosmic rays, Water Resour. Res., 46, W11505, doi:10.1029/2009WR008726, 2010. | : Desilets, D., Zreda, M., Ferre, TPA.: Nature’s neutron probe: Land surface hydrology at an elusive scale with cosmic rays, Water Resour. Res., 46, W11505, doi:10.1029/2009WR008726, 2010. | ||
| − | : Rivera Villarreyes, CA., Baroni, G., Oswald, SE.: [http://www.hydrol-earth-syst-sci | + | : Rivera Villarreyes, CA., Baroni, G., Oswald, SE.: [http://www.hydrol-earth-syst-sci.net/15/3843/2011/hess-15-3843-2011.html Integral quantification of seasonal soil moisture changes in farmland by cosmic-ray neutrons, Hydrol. Earth Syst. Sci., 15(12), 3843-3859, DOI: 10.5194/hess-15-3843-2011, 2011]. |
: Zreda, M., Desilets, D., Ferre, TPA., Scott, RL.: Measuring soil moisture content non-invasively at intermediate spatial scale using cosmic-ray neutrons, Geophys. Res. Lett., 23(9), 949-952, 2008. | : Zreda, M., Desilets, D., Ferre, TPA., Scott, RL.: Measuring soil moisture content non-invasively at intermediate spatial scale using cosmic-ray neutrons, Geophys. Res. Lett., 23(9), 949-952, 2008. | ||
[[Category:Equipment]] | [[Category:Equipment]] | ||
[[Category:Soil Moisture]] | [[Category:Soil Moisture]] | ||
Revision as of 12:52, 6 February 2012
Parameter to be measured:
Soil moisture
Method:
He3 neutron detectors for cosmic-ray neutron measurements
Equipment:
Advantages:
Measurement of avarage soil moisture for a spatial-scale of 300 m radius around the measurement device, averaged over depth of several decimetres.
Disadvantages:
Under wet conditions the measurement depth decreases, from 80 cm in dry soils to 10 cm in wet soils. Water bodies (lakes, storage ponds) influence the signal.
What to watch out for:
1) Variability of penetration depth due changes of mean areal soil moisture in the cosmic-ray footprint. 2) Possible site-specific fitting parameters of equation for soil moisture estimation. This is due changes of conditions involved on neutron transport. 3) Watch out for significant fluctuations of incomming high-energy cosmic rays.
Problems/Questions:
Price:
11500 US$ 2010
Links
Projects that used the above equipment:
Other related web sites:
References
- Desilets, D., Zreda, M., Ferre, TPA.: Nature’s neutron probe: Land surface hydrology at an elusive scale with cosmic rays, Water Resour. Res., 46, W11505, doi:10.1029/2009WR008726, 2010.
- Rivera Villarreyes, CA., Baroni, G., Oswald, SE.: Integral quantification of seasonal soil moisture changes in farmland by cosmic-ray neutrons, Hydrol. Earth Syst. Sci., 15(12), 3843-3859, DOI: 10.5194/hess-15-3843-2011, 2011.
- Zreda, M., Desilets, D., Ferre, TPA., Scott, RL.: Measuring soil moisture content non-invasively at intermediate spatial scale using cosmic-ray neutrons, Geophys. Res. Lett., 23(9), 949-952, 2008.