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Çѱ¹¼öÀÚ¿øÇÐȸ / v.34, no.4, 2001³â, pp.365-379
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¾îµµ »ýżö¸®½ÇÇè¿¡ ÀÇÇÑ È¸À¯¼º ¾î·ùÀÇ ¼Ò»ó´É·Â Æò°¡(I) - »ç´Ù¸®½Ä ¾îµµ -
( Assessment of Ascending Capacity of Migratory Fish in Fishways by Eco-hydraulic Experiments (I) - Baffled Fishways - ) |
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| This paper presents an echo-hydraulic experimental approach to assessment of ascending capacity of migratory fish in a baffled fishway. Sweetfish, Plecoglossus altivelis, trout, Oncorhynchus mykiss, are used in these experiments. Ascending environment of the migratory fish in rivers is analyzed through the results of taco-hydraulic experiments. Important factors affecting the ascending capacity of migratory fish in baffled fishways are the discharge and slope of fishways and the fall height between the fishway entrance and the river bed. In these fishways the migratory capacity of sweetfish for a given fishway discharge is mainly affected by fishway slope, whereas the ascending capacity of trout for a given fishway slope was influenced by the change of fishway discharge. Loss of ascending properties of landlocked salmon, Oncorhynchus masou var ishikawai, was confirmed by these experiments. An ascending hydraulic criteria of the baffled fishway is defined by means of dimensionless factor F$_{f}$ and falling head H$_{f}$. Ascending capacity of migratory fish in existing baffled fishways in river of eastern coastal region is poor because the slope of fishways is verb steep.eep. |
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| »ç´Ù¸®½Ä¾îµµ;»ýżö¸®½ÇÇè;¼Ò»ó´É·Â;ȸÀ¯¼º ¾î·ù;ÇÏõ»ýÅÂȯ°æ;¼Ò»ó¼ö¸®Á¶°Ç; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.34, no.4, 2001³â, pp.365-379
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200111920731622)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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