کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4579309 1630112 2008 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Performance of a multi-level TDR system exposed to tropical field conditions – A time-space comparison with tensiometry
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Performance of a multi-level TDR system exposed to tropical field conditions – A time-space comparison with tensiometry
چکیده انگلیسی

SummaryTime-domain reflectometry (TDR) is an important technique to obtain series of soil water content measurements in the field. Diode-segmented probes represent an improvement in TDR applicability, allowing measurements of the soil water content profile with a single probe. In this paper we explore an extensive soil water content dataset obtained by tensiometry and TDR from internal drainage experiments in two consecutive years in a tropical soil in Brazil. Comparisons between the variation patterns of the water content estimated by both methods exhibited evidences of deterioration of the TDR system during this two year period at field conditions. The results showed consistency in the variation pattern for the tensiometry data, whereas TDR estimates were inconsistent, with sensitivity decreasing over time. This suggests that difficulties may arise for the long-term use of this TDR system under tropical field conditions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hydrology - Volume 352, Issues 1–2, 30 April 2008, Pages 181–190
نویسندگان
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