Application of capacitance instrumentation to the measurement of density and velocity of flowing snow

Michel Y. Louge, Roland Steiner, Stephen C. Keast, Rand Decker, James Dent, Martin Schneebeli

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

We describe capacitance instrumentation suitable for the measurement of density and velocity of flowing snow with moderate liquid-phase water content. A wand, consisting of two adjacent sensors protected by guard circuits, produces signals that are related to snow density through calibration. Cross-correlation of the signals permits velocity measurements. Calibration is accomplished using a capacitance device that records the dielectric properties of a snow sample while subjecting it to controlled levels of compaction and volume change. Non-invasive probe geometries are also presented. The instrumentation is tested in artificial and natural avalanches.

Original languageEnglish (US)
Pages (from-to)47-63
Number of pages17
JournalCold Regions Science and Technology
Volume25
Issue number1
StatePublished - Jan 1997
Externally publishedYes

Fingerprint

Snow
instrumentation
Capacitance
snow
Calibration
calibration
dielectric property
volume change
avalanche
Velocity measurement
Dielectric properties
Water content
compaction
Compaction
water content
probe
sensor
geometry
liquid
Geometry

Keywords

  • Avalanche
  • Dielectric properties
  • Electrical methods
  • Measurement
  • Snow

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Geotechnical Engineering and Engineering Geology

Cite this

Application of capacitance instrumentation to the measurement of density and velocity of flowing snow. / Louge, Michel Y.; Steiner, Roland; Keast, Stephen C.; Decker, Rand; Dent, James; Schneebeli, Martin.

In: Cold Regions Science and Technology, Vol. 25, No. 1, 01.1997, p. 47-63.

Research output: Contribution to journalArticle

Louge, Michel Y. ; Steiner, Roland ; Keast, Stephen C. ; Decker, Rand ; Dent, James ; Schneebeli, Martin. / Application of capacitance instrumentation to the measurement of density and velocity of flowing snow. In: Cold Regions Science and Technology. 1997 ; Vol. 25, No. 1. pp. 47-63.
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