Use of Bromide to Trace Infiltration of Rainfall through Sandy Soil in Northeast Thailand
ISSN | 00213551 |
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書誌レコードID(総合目録DB) | AA0068709X |
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.
刊行年月日 | |
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作成者 | HAMADA Hiromasa SUKCHAN Somsak MOROIZUMI Toshitsugu WATABE Hiroki HASEGAWA Shuichi |
著者キーワード |
piston flow |
公開者 | Japan International Research Center for Agricultural Sciences |
オンライン掲載日 | |
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 |
巻 | 39 |
号 | 1 |
開始ページ | 29 |
終了ページ | 35 |
DOI | 10.6090/jarq.39.29 |
権利 | Japan International Research Center for Agricultural Sciences |
言語 | eng |