The role of soil volumetric liquid water content during snow gliding processes

Ceaglio, E.; Mitterer, Christoph; Maggioni, Margherita; Ferraris, Stefano; Segor, V.; Freppaz, Michèle

doi:10.1016/j.coldregions.2017.01.007

Cited by 23 publications

(33 citation statements)

References 15 publications

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“…Soil moisture represents a key state variable to understand surface hydrological processes (such as drainage, evaporation and plant uptake) and it controls water and energy exchanges between the land surface and the atmosphere [4,5] contributing also, as key factor, in soil-snow interactions and snow gliding [6]. Through direct evaporation and plant transpiration, soil moisture regulates the partitioning of the incoming solar energy at the land surface into the outgoing sensible, latent, and ground heat fluxes.…”

Section: Soil Moisture and Soil-water Relationsmentioning

confidence: 99%

Local- and Plot-Scale Measurements of Soil Moisture: Time and Spatially Resolved Field Techniques in Plain, Hill and Mountain Sites

Raffelli

Previati

Canone

et al. 2017

Water

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Soil moisture measurement is essential to validate hydrological models and satellite data. In this work we provide an overview of different local and plot scale soil moisture measurement techniques applied in three different conditions in terms of altitude, land use, and soil type, namely a plain, a mountain meadow and a hilly vineyard. The main goal is to provide a synoptic view of techniques supported by practical case studies to show that in such different conditions it is possible to estimate a time and spatially resolved soil moisture by the same combination of instruments: contact-based methods (i.e., Time Domain Reflectometry-TDR, and two low frequency probes) for the time resolved, and hydro-geophysical minimally-invasive methods (i.e., Electromagnetic Induction-EMI, Ground Penetrating Radar-GPR, and the Electrical Resistivity Tomography-ERT) for the spatially resolved. Both long-term soil moisture measurements and spatially resolved measurement campaigns are discussed. Technical and operational measures are detailed to allow critical factors to be identified.

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Section: Soil Moisture and Soil-water Relationsmentioning

confidence: 99%

Local- and Plot-Scale Measurements of Soil Moisture: Time and Spatially Resolved Field Techniques in Plain, Hill and Mountain Sites

Raffelli

Previati

Canone

et al. 2017

Water

Self Cite

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“…Ceaglio et al (2017) investigated the role of the soil in the context of snow gliding and the formation of glide cracks and 15 avalanches. They concluded that the thermal and hydraulic processes in the soil have to be considered.…”

Section: Discussionmentioning

confidence: 99%

“…The viscosity of snow depends on the snow temperature (Loth et al, 1993;5 Morris, 1994) and snow water content (Mitterer and Schweizer, 2012;McClung and Clarke, 1987). The slope angle, the micro relief, and the hydrological properties of the slope influence the glide velocity (Ceaglio et al, 2017;McClung and Schaerer, 1999;Margreth, 2007). Friction originated by the vegetation depends on its composition and height (Höller et al, 2009).…”

mentioning

confidence: 99%

Determining the drivers for snow gliding

Fromm¹,

Baumgärtner²,

Leitinger³

et al. 2018

Preprint

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Abstract. Snow gliding is a key factor for snow glide avalanche formation and soil erosion. This study considers atmospheric 10 and snow variables, vegetation characteristics, and soil properties, and determines their relevance for snow gliding at a test site (Wildkogel, Upper Pinzgau, Austria) during winter 2014/15. The time-dependent data were collected at a high temporal resolution. In addition to conventional sensors a 'snow melt analyzer' was used.

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“…The presence of liquid water at the bottom of the snowpack is a basic requirement for snow gliding (In der Gand, 1954;Lackinger, 1988;McClung et al, 1994;Mitterer and Schweizer, 2013). Several sources exist to provide liquid water to this location (Ceaglio et al, 2012(Ceaglio et al, , 2017Mitterer and Schweizer, 2012). Rain on the snow surface, as well as melting snow near to the surface (Koh and Jordan, 1995), can percolate the isothermal snowpack.…”

Section: Introductionmentioning

confidence: 99%

Determining the drivers for snow gliding

Fromm¹,

Baumgärtner²,

Leitinger³

et al. 2018

Nat. Hazards Earth Syst. Sci.

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Abstract. Snow gliding is a key factor for snow-glide avalanche formation and soil erosion. This study considers atmospheric and snow variables, vegetation characteristics, and soil properties and determines their relevance for snow gliding at a test site (Wildkogel, Upper Pinzgau, Austria) during winter 2014/2015. The time-dependent data were collected at a high temporal resolution. In addition to conventional sensors, a “snow melt analyzer” was used. The analysis shows that the soil temperature 10 cm below the surface, the phytomass of mosses, the liquid water content in the snowpack, and the static friction coefficient of the glide shoes had significant influence on snow gliding during the whole winter. In the first period (October to January) the soil moisture at the surface and 1.5 cm below the surface and the length of the slope uphill of the glide shoes affected the snow gliding, too. In the second period (February to May) the soil temperature at the surface, the soil moisture 10 cm below the surface, and the slope angle had additional influence on snow gliding. The role of the vegetation in the snow-glide process is determined by the influence on the static friction coefficient caused by its composition and characteristics and by moss-rich and short-stemmed canopies being seemingly more interconnected with the snowpack. In addition to the soil and snow properties, the topography and the vegetation characteristics, further investigations may be focused on the freezing and melting processes in the uppermost soil layers and at the soil surface.

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The role of soil volumetric liquid water content during snow gliding processes

Cited by 23 publications

References 15 publications

Local- and Plot-Scale Measurements of Soil Moisture: Time and Spatially Resolved Field Techniques in Plain, Hill and Mountain Sites

Local- and Plot-Scale Measurements of Soil Moisture: Time and Spatially Resolved Field Techniques in Plain, Hill and Mountain Sites

Determining the drivers for snow gliding

Determining the drivers for snow gliding

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