Open AccessA six level automatic soil temperature measuring system
Author(s) -
J. S. Pillai,
Sangeeta Saxena,
K. G. Vernekar
Publication year - 1993
Publication title -
mausam
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.243
H-Index - 12
ISSN - 0252-9416
DOI - 10.54302/mausam.v44i2.3814
Subject(s) - thermistor , environmental science , temperature measurement , chart , soil science , automatic weather station , hydrology (agriculture) , remote sensing , materials science , meteorology , geotechnical engineering , geology , electrical engineering , engineering , physics , mathematics , statistics , quantum mechanics
An automatic soil temperature measuring equipment is developed using four terminal thermistors. The output voltages from the six levels, i.e., 10 cm above soil surface, soil surface and 10 cm, 20 cm, 30 cm and 60 cm below the soil surface, are amplified and their multiplexed output is recorded on a chart recorder. The equipment is tested in the field and continuous observations are taken during May 1991. Temperature profiles for different hours of the day are plotted and diurnal variations of all levels are also discussed. An attempt is made to evaluate the damping depth and thence the thermal conductivity and soil heat flux.