http://www.suiri.civil.yamaguchi-u.ac.jp/

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????????2

• ?????
• ???? 2??
• ??
• http//www.suiri.civil.yamaguchi-u.ac.jp/
• kido_at_.yamaguchi-u.ac.jp

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?????
????????? ???????
3
?????????
??????????????(???????HP??)
http//www.jma.go.jp/jma/kishou/know/kijun/yamaguc
hi.pdf
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??(runoff)?????????????
??
????
??
??
????
??
????
???
??
????
????
??????
????
?????
?? ???
??????
5
??(precipitation) ??????????????????????,?,?,???
??????????? ???????????????????,??????????
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??????????(??)???. ????????????????(??????)????
??
?????
??????????????????,????????????????,??????????????
????????????
7
?????
?????????????????
???????????????????????????.
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????????????????????????????????????????????(?????
?(Thiessen method)).
??????????,????????????????.??????????????????????
????.????????????????????????????.A??????.ai??????
??.
9
?????
?????????????????????,??????????????????????,?????
????????????????????,?????????????
????
50mm
a1
a3
40mm
a2
a4
30mm
20mm
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??17???14????????????????(??mm)
??????
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????(interception) ???????????????????????????.
?????????????????.????????1030????. (???????????
???????????.)
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??(evaporation) ?????????. ??(transpiration) ??
?????????,??????????????????????. ???(evapotransp
iration) ???????????????.
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??(infiltration) ???????????????????????????.
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????(depression storage) ??????????????????.?????
???????,??,???????????????. ????(surface
detention) ????????????????????,?????????????????
.????????????????.????????????,???????????????.???
?(surface storage)????.
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??(loss) ?????????????????? ??????,?????? ???????
,????,??????
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??!
??(loss)???
??
????(initial loss)????
???? (??????????)
??
???? (ground water flow)
??? (subsurface flow)
??? (overland flow)
????
????
???
???
???? (direct runoff) ???????????
???? (base runoff) ??????????????
?(?)??
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????????????????????????.
???????????????????????,????????????????????.?????
???????????. ??????????????????????????????. (???
????????????????.)
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???????(hyetograph)????????????????
???????(hydrograph)??????????
???????????????????? ????????????????????????
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???????? ???????????????????????
A??????????.?????
?????
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1)AB??????????????????(?????) 2)AG2?????????????
?????(??????)
?)???????????????????????????????
????(net effective rain)
??????????????????????????????????????????????????
????????????????????????????????????????