Bifurcation Angle Distribution in the Japanese River Network
In this study, the distribution of a bifurcation angle in the Japanese river network is investigated. The resultant distribution has a peak at approximately 72° obtained via Gaussian fitting. This characteristic value is consistent with the one obtained in a field observation and theoretically predi...
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| Published in: | Journal of the Physical Society of Japan Vol. 88; no. 2; p. 24901 |
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| Main Authors: | , , |
| Format: | Journal Article |
| Language: | English |
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Tokyo
The Physical Society of Japan
15-02-2019
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| Abstract | In this study, the distribution of a bifurcation angle in the Japanese river network is investigated. The resultant distribution has a peak at approximately 72° obtained via Gaussian fitting. This characteristic value is consistent with the one obtained in a field observation and theoretically predicted in previous studies for the bifurcation caused by groundwater seepage erosion process. In addition, we investigate the distributions of the remaining two angles, called bending angles, at a junction. This distribution has an anomalous peak of approximately 180°. The conditional distribution of the bifurcation angle given the bending angle shows that bifurcation and bending angles have no correlations. |
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| AbstractList | In this study, the distribution of a bifurcation angle in the Japanese river network is investigated. The resultant distribution has a peak at approximately 72° obtained via Gaussian fitting. This characteristic value is consistent with the one obtained in a field observation and theoretically predicted in previous studies for the bifurcation caused by groundwater seepage erosion process. In addition, we investigate the distributions of the remaining two angles, called bending angles, at a junction. This distribution has an anomalous peak of approximately 180°. The conditional distribution of the bifurcation angle given the bending angle shows that bifurcation and bending angles have no correlations. |
| Author | Watanabe, Takeru Hara, Kenji Yukawa, Satoshi |
| Author_xml | – sequence: 1 givenname: Satoshi orcidid: 0000-0001-9022-358X surname: Yukawa fullname: Yukawa, Satoshi organization: Department of Earth and Space Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan – sequence: 2 givenname: Takeru surname: Watanabe fullname: Watanabe, Takeru organization: Department of Earth and Space Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan – sequence: 3 givenname: Kenji surname: Hara fullname: Hara, Kenji organization: Department of Earth and Space Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan |
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| CitedBy_id | crossref_primary_10_1073_pnas_2211942119 crossref_primary_10_1016_j_cageo_2022_105180 |
| Cites_doi | 10.1086/627137 10.1073/pnas.1215218109 10.1029/96WR02397 10.1103/PhysRevE.53.1510 10.1098/rsta.2012.0365 10.1111/j.1365-3121.2009.00880.x 10.1016/j.jseaes.2012.04.014 10.1002/2016GL072089 10.1130/0016-7606(1945)56[275:EDOSAT]2.0.CO%3B2 |
| ContentType | Journal Article |
| Copyright | Copyright The Physical Society of Japan Feb 15, 2019 |
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| References | r06/r06_1 Hack J. (r01/r01_1) 1957; 294 r14/r14_1 r08/r08_1 r04/r04_1 r07/r07_1 r03/r03_1 r11/r11_1 Bear J. (r10/r10_1) 1979 Takayama S. (r02/r02_1) 1974 r09/r09_1 r05/r05_1 Abramowitz M. (r13/r13_1) 1965 |
| References_xml | – ident: r07/r07_1 doi: 10.1086/627137 – volume-title: Hydraulics of Groundwater year: 1979 ident: r10/r10_1 contributor: fullname: Bear J. – volume-title: Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables year: 1965 ident: r13/r13_1 contributor: fullname: Abramowitz M. – ident: r08/r08_1 doi: 10.1073/pnas.1215218109 – ident: r03/r03_1 doi: 10.1029/96WR02397 – volume-title: Kasen Chikei year: 1974 ident: r02/r02_1 contributor: fullname: Takayama S. – ident: r04/r04_1 doi: 10.1103/PhysRevE.53.1510 – ident: r09/r09_1 doi: 10.1098/rsta.2012.0365 – volume: 294 start-page: 45 year: 1957 ident: r01/r01_1 publication-title: U.S. Geol. Surv. Prof. Pap. contributor: fullname: Hack J. – ident: r05/r05_1 doi: 10.1111/j.1365-3121.2009.00880.x – ident: r11/r11_1 doi: 10.1016/j.jseaes.2012.04.014 – ident: r14/r14_1 doi: 10.1002/2016GL072089 – ident: r06/r06_1 doi: 10.1130/0016-7606(1945)56[275:EDOSAT]2.0.CO%3B2 |
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| Snippet | In this study, the distribution of a bifurcation angle in the Japanese river network is investigated. The resultant distribution has a peak at approximately... |
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| StartPage | 24901 |
| SubjectTerms | Bifurcation theory Erosion mechanisms Groundwater River networks Seepage |
| Title | Bifurcation Angle Distribution in the Japanese River Network |
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