USE OF PROXIMAL GAMMA-RAY SPECTROSCOPY FOR NEAR REAL-TIME DETECTION OF SNOW WATER EQUIVALENT IN JIZERA MTS.

Authors

  • Abigail Klejchová CTU in Prague
  • Michal Dohnal Czech Technical University in Prague
  • Miroslav Tesař

DOI:

https://doi.org/10.14311/CEJ.2022.01.0011

Keywords:

Snow water equivalent, Snow depth, Montane catchment, Temperate climate

Abstract

The snow water equivalent is an important snow characteristic as it provides hydrologically relevant information on the amount of water stored in the snowpack. The experimental catchment in the Jizera Mountains was equipped with the gamma-ray spectroscope CS725. The sensor uses emitted electromagnetic signals of isotopes 40K and 208Tl to remotely and continuously measure the snow water equivalent (SWE). Two winter seasons, 2018-2019 and 2019-2020 were monitored, and the obtained data were analyzed together with the complementary measurements available (snow depth, precipitation, air temperature). The sensor was tested in contrasting conditions of the precipitation-rich winter period 2018-2019 and the mild winter period 2019-2020. Our measurement showed that the SWE values derived from both isotopes are very similar and logically correspond well with the other measurements at the site. As far as we know, the first use of the sensor in the Czech Republic has proven usability in the conditions of the temperate montane catchment.

Author Biography

Michal Dohnal, Czech Technical University in Prague

Associate Professor Department of Hydraulics and Hydrology Faculty of Civil Engineering (FSV) Czech Technical University in Prague https://www.researchgate.net/profile/Michal_Dohnal2 http://www.researcherid.com/rid/A-1233-2009

References

Pomeroy J.W., Brun E., 2001. Physical properties of snow. In: Jones H.G., Pomeroy W.J., Walker D.A., Hoham R.W. (eds) Snow ecology: an interdisciplinary examination of snow-covered ecosystems. Cambridge University Press. Cambridge, UK, pp 45-118.

Koch, F., Henkel, P., Appel, F., Schmid, L., Bach, H., Lamm, M., et al., 2019. Retrieval of snow water equivalent, liquid water content, and snow height of dry and wet snow by combining GPS signal attenuation and time delay. Water Resources Research, 55, 4465–4487.

Grasty R., 1982. Direct snow-water equivalent measurement by air-borne gamma-ray spectrometry. Journal of Hydrology, 55(1-4): 213-235.

Ducharme, P., Houdayer, A., Choquette, Y., Kapfer, B., Martin, J. P., 2015. Numerical Simulation of Terrestrial Radiation over a Snow Cover. Journal of Atmospheric and Oceanic Technology [online]. ISSN 0739-0572, 1520-0426.

Wada, M., Kodama, M., Kawasaki, S., 1977. Method of determining the water equivalent depth of snowfall using neutrons of cosmic rays. US patent 4,047,042.

Condreva, K.J., 1997. Method for detecting water equivalent of snow using secondary cosmic gamma radiation. United States: N. p.

Choquette, Y., Lavigne, P., Ducharme, P., Houdayer, A., Martin J. P., 2010. Apparatus and method for monitoring snow water equivalent and soil moisture content using natural gamma radiation. US patent 7,800,051 B2.

Choquette, Y., Ducharme, P., Rogoza, J., 2013. CS725, an accurate sensor for the snow water equivalent and soil moisture measurements. International Snow Science Workshop Grenoble – Chamonix Mont-Blanc France

Smith, C. D., Kontu, A., Laffin, R., Pomeroy, J. W., 2017. An assessment of two automated snow water equivalent instruments during the WMO Solid Precipitation Intercomparison Experiment. The Cryosphere [online]. ISSN 1994-0424.

Munzar, J., Ondráček, S., 2010. Historický srážkový rekord z Jizerských hor z roku 1897 dodnes nepřekonán. Sborník Severočeského Muzea. ISSN 0375–1686.

Campbell Scientific, Inc., 2012. Guide of manufacturer CS725 Snow Water Equivalency Sensor. Campbell Scientific Ltd.

Kirkham J.D., Koch I., Saloranta T.M., Litt M., Stigter E.E., Møen K., Thapa A., Melvold K., Immerzeel W.W., 2019. Near Real-Time Measurement of Snow Water Equivalent in the Nepal Himalayas. Front. Earth Sci. 7:177.

Downloads

Published

2022-04-30

How to Cite

Klejchová, A., Dohnal, M., & Tesař, M. (2022). USE OF PROXIMAL GAMMA-RAY SPECTROSCOPY FOR NEAR REAL-TIME DETECTION OF SNOW WATER EQUIVALENT IN JIZERA MTS. Stavební Obzor - Civil Engineering Journal, 31(1), 143–152. https://doi.org/10.14311/CEJ.2022.01.0011

Issue

Section

Articles