国立研究開発法人 国際農林水産業研究センター | JIRCAS

Use of Bromide to Trace Infiltration of Rainfall through Sandy Soil in Northeast Thailand

JARQ : Japan Agricultural Research Quarterly
ISSN
00213551
書誌レコードID(総合目録DB)
AA0068709X
本文フルテキスト

Bromide (Br-) was used to successfully trace the infiltration of rainfall through a sandy soil in northeast Thailand. A method was developed to measure the Br- concentration in extracted water from soil samples in order to determine the vertical distribution of the Br- concentration in soil water. Our experimental results revealed that Br- moved downward with a piston flow and that the increase in the amount of water in the soil above the depth of the peak Br- concentration equaled the increase in soil moisture caused by the infiltration. Using our method, we found that the largest amount of rainfall infiltration occurred during September. The amount of soil water above the peak Br- concentration was calculated to be about 0 mm during the period between June 27, 2003 and August 7, 2003; about 100 mm during the period between June 27, 2003 and September 10, 2003; and about 80 mm during the period between June 27, 2003 and February 12, 2004.

刊行年月2005-01-01
作成者HAMADA HiromasaSUKCHAN SomsakMOROIZUMI ToshitsuguWATABE HirokiHASEGAWA Shuichi
著者キーワード

piston flow

公開者Japan International Research Center for Agricultural Sciences
データ作成日2005-01-01
国立情報学研究所メタデータ主題語彙集(資源タイプ)Journal Article
39
1
開始ページ29
終了ページ35
DOI10.6090/jarq.39.29
権利Japan International Research Center for Agricultural Sciences
言語eng