Quantitative morphometric analysis of the Jama River profile in a tectonically active margin (Northwestern Ecuador)
文献类型：期刊论文
| 作者 | Reyes, PSB; Valarezo, ME; Cordova, J; Michaud, FA; Zapata, C |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2018 |
| 卷号 | 15期号:5页码:966-975 |
| 关键词 | Morphometry Jama River Stream profile Active tectonics |
| ISSN号 | 1672-6316 |
| DOI | 10.1007/s11629-017-4751-y |
| 文献子类 | Article |
| 英文摘要 | The longitudinal profile of a river channel can be described in function of mathematical expressions. The logarithmic fit is the most used method to describe the relative equilibrium of a channel elevation profile. Rivers showing zones of high channel gradient and convex-upward profiles can be evaluated in function of the offset distance with respect to the logarithmic curve. The Jama River profile has been constructed using differential GPS data for the downstream reach and 4-m-grid DEM data base for the remaining headward profile. The resulting longitudinal profile shows a prominent knickpoint of about 80 m in elevation characterized by sharp local convexity. The offset distance in vertical direction from the logarithmic plot is interpreted as the successive accumulation of multiple uplift episodes associated with the Jama Fault System activity. The horizontal offset is suggested to represent the remaining retreated distance for the upstream propagation of the Jama knickpoint. The highly resistant Cretaceous rocks outcropping along the Jama knickpoint reach acts as an inflection point between two subprofiles that show well-fitted logarithmic curves, thereby representing a temporary partitioned equilibrium along the Jama River profile. |
| 电子版国际标准刊号 | 1993-0321 |
| 语种 | 英语 |
| WOS记录号 | WOS:000431989800004 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/35521]  |
| 专题 | Journal of Mountain Science_Journal of Mountain Science-2018_Vol15 No.5 |
| 推荐引用方式 GB/T 7714 | Reyes, PSB,Valarezo, ME,Cordova, J,et al. Quantitative morphometric analysis of the Jama River profile in a tectonically active margin (Northwestern Ecuador)[J]. JOURNAL OF MOUNTAIN SCIENCE,2018,15(5):966-975. |
| APA | Reyes, PSB,Valarezo, ME,Cordova, J,Michaud, FA,&Zapata, C.(2018).Quantitative morphometric analysis of the Jama River profile in a tectonically active margin (Northwestern Ecuador).JOURNAL OF MOUNTAIN SCIENCE,15(5),966-975. |
| MLA | Reyes, PSB,et al."Quantitative morphometric analysis of the Jama River profile in a tectonically active margin (Northwestern Ecuador)".JOURNAL OF MOUNTAIN SCIENCE 15.5(2018):966-975. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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