๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Automatic soil-frost measuring system

โœ Scribed by M.D. Burgess; C.L. Hanson

Publisher
Elsevier Science
Year
1979
Weight
295 KB
Volume
20
Category
Article
ISSN
0002-1571

No coin nor oath required. For personal study only.

โœฆ Synopsis

Recent advances in integrated circuit technology made it possible to develop the lowcost, battery-operated, recording, soil-frost measurement system described in this paper. This system utilizes the abrupt conductivity changes within gypsum soil-moisture blocks to indicate if soil is frozen or thawed.

Frozen soil conditions were accurately determined as indicated by manual observations and soil temperature sensors. There was a more abrupt change in resistance readings when the blocks were freezing than when they were thawing. This system is especially suitable for remote study sites because of low-power DC operation. When the soil is very dry, soil-moisture block resistance is very high and it is not possible to determine frozen soil.

๐Ÿ“œ SIMILAR VOLUMES

An automatic sprinkler system giving var
An automatic sprinkler system giving variable irrigation rates matched to measured frost protection needs
โœ P.J.C. Hamer ๐Ÿ“‚ Article ๐Ÿ“… 1980 ๐Ÿ› Elsevier Science โš– 678 KB

Hamer, P. J. C., 1980. An automatic sprinkler system giving variable irrigation rates matched to measured frost protection needs. Agric. Meteorol., 21: 281--293. Sprinkler systems supplying water at a fixed rate are commonly used for protection of fruit crops from frost. Calculations of water requi

Soil frost and runoff at Svartberget, no
Soil frost and runoff at Svartberget, northern Swedenโ€”measurements and model analysis
โœ Gรถran Lindstrรถm; Kevin Bishop; Mikaell Ottosson Lรถfvenius ๐Ÿ“‚ Article ๐Ÿ“… 2002 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 555 KB

## Abstract The effect of soil frost on runoff was investigated using a comprehensive data set collected at the Svartberget Experimental Forest, near Vindeln, Vรคsterbotten in northern Sweden. Measurements of snow depth, soil temperature, frost depth and other climate parameters have been made at th