Back to Results List

Export

Link to this page

Please use this URL for citations.

Search Other Services

Statistics

  • Access to this page：975 times

＜departmental bulletin paper＞
Studies on Runoff Characteristics of Rivers in Southern Kyushu

Creator
Creator Name
四ヶ所, 四男美
Shikasho, Shiomi
Affiliation
Affiliation Name
九州大学農学部排水干拓工学教室
Laboratory of Land-Drainage and Reclamation, Faculty of Agriculture, Kyushu University
Creator Name
田中, 宏平
Tanaka, Kohei
Affiliation
Affiliation Name
九州大学農学部排水干拓工学教室
Laboratory of Land-Drainage and Reclamation, Faculty of Agriculture, Kyushu University
Author PID
L001119
Creator Name
戸原, 義男
Tohara, Yoshio
Affiliation
Affiliation Name
九州大学農学部排水干拓工学教室
Laboratory of Land-Drainage and Reclamation, Faculty of Agriculture, Kyushu University
Language
Japanese
Publisher
九州大學農學部
Faculty of Agriculture, Kyushu University
Date
1974-06
Source Title
Science bulletin of the Faculty of Agriculture, Kyushu University
Vol
28
Issue
4
First Page
185
Last Page
190
Publication Type
Version of Record
Access Rights
open access
JaLC DOI
https://doi.org/10.15017/23165
Related DOI
九州大學農學部學藝雜誌 || 28(4) || p185-190
Science bulletin of the Faculty of Agriculture, Kyushu University || 28(4) || p185-190
http://www.agr.kyushu-u.ac.jp/
Related URI
九州大學農學部學藝雜誌 || 28(4) || p185-190
Science bulletin of the Faculty of Agriculture, Kyushu University || 28(4) || p185-190
http://www.agr.kyushu-u.ac.jp/
Relation
九州大學農學部學藝雜誌 || 28(4) || p185-190
Science bulletin of the Faculty of Agriculture, Kyushu University || 28(4) || p185-190
http://www.agr.kyushu-u.ac.jp/

Hide fulltext details.

pdf p185 pdf 398 KB 265  

Details

Record ID
23165
Peer-Reviewed
Unrefereed
Subject Terms
南九州地域
河川
大淀川
川内川
肝属川
非線型流出解析
流出特性
表面流出
地下水流出量
土湿貯留水
ISSN
0368-6264
NCID
AN0005519X
Notes
This paper expresses the study of runoff characteristics of typical rivers (Oyodo, Sendai, Kimotsuki) in Southern Kyushu. The non-linear analysis is used specially for the study of runoff. The basic equation can be expressed by Eq(3) for the runoff model. The linear and non-linear kernels are obtained by numerical calculation. The unknown terms are derived so that the squared sum of error between calculated discharge and observed one may be the least. From the results of analysis, it is found that even if it rains a little, the surface runoff occurs, and much groundwater runoff are expected at all times. The above is the runoff characteristic in Southern Kyushu. It is a reason that the surface soil always has much moisture content. Then, the annual total water losses show 600-800 mm except the Kimotsuki river. Those values nearly coincide with the national mean value. The evapotranspiration from river basin is not much affected by plant features, surface soil, geology and such conditions of it, but affected by water content in the subsurface stratum and the number of rain days.
南九州地域の代表的3河川(大淀川,川内川,肝属川)について,非線型流出解析を行い,流出特性を考察した.この研究で理解されたことを要約するとつぎのとおりである. 1) 表面流出が比較的小さな雨量でも生起すること,および地下水流出量が多い.このことが,南九州地域の河川の流出特性であつて,その原因を考察すれば,土湿貯留水が多く(すなわち,地下貯水に有効な地質である),また,土壌は飽和されるに必要な水量が少なくてよい(表層土が湿潤状態にあるか,あるいは飽和になるのに必要な絶対量が少ない)と考えられる. 2) 年総損失雨量は,肝属川を除けば600～800mmであつて,全国平均とほぼ一致する.流域からの蒸発散量は,植生,表層土,地質等といつた流域条件の影響はあまり受けず,流域の湿潤状態と降雨日数に支配されるものと推定される.
Created Date 2012.07.25
Modified Date 2022.11.11

People who viewed this item also viewed

Back to Results List