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| DOI | 10.5194/esurf-12-433-2024 |
| Quantifying the migration rate of drainage divides from high-resolution topographic data | |
| 发表日期 | 2024 |
| ISSN | 2196-6311 |
| EISSN | 2196-632X |
| 起始页码 | 12 |
| 结束页码 | 2 |
| 卷号 | 12期号:2 |
| 英文摘要 | The lateral movement of drainage divides is co-influenced by tectonics, lithology, and climate and therefore archives a wealth of geologic and climatic information. It also has wide-ranging implications for topography, the sedimentary record, and biological evolution and thus has drawn much attention in recent years. Several methods have been proposed to determine drainage divides' migration state (direction and rate), including geochronological approaches (e.g., 10 Be) and topography-based approaches (e.g., chi plots or Gilbert metrics). A key object in these methods is the channel head, which separates the hillslope and channel. However, due to the limited resolution of topography data, the required channel-head parameters in the calculation often cannot be determined accurately, and empirical values are used in the calculation, which may induce uncertainties. Here, we propose two methods to calculate the migration rate of drainage divides based on the relatively accurate channel-head parameters derived from high-resolution topographic data. We then apply the methods to an active rift shoulder (Wutai Shan) in the Shanxi Rift and a tectonically stable area (Yingwang Shan) in the Loess Plateau, to illustrate how to calculate drainage-divide migration rates. Our results show that the Wutai Shan drainage divide is migrating northwestward at a rate between 0.21 and 0.27 mm yr - 1 , whereas the migration rates at the Yingwang Shan are approximately zero. This study indicates that the drainage-divide stability can be determined more accurately using high-resolution topographic data. Furthermore, this study takes the cross-divide differences in the uplift rate of channel heads into account in the measurement of drainage-divide migration rate for the first time. |
| 语种 | 英语 |
| WOS研究方向 | Physical Geography ; Geology |
| WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
| WOS记录号 | WOS:001190492000001 |
| 来源期刊 | EARTH SURFACE DYNAMICS
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/301618 |
| 作者单位 | China Earthquake Administration; Chinese Academy of Sciences; Institute of Mountain Hazards & Environment, CAS |
| 推荐引用方式 GB/T 7714 | . Quantifying the migration rate of drainage divides from high-resolution topographic data[J],2024,12(2). |
| APA | (2024).Quantifying the migration rate of drainage divides from high-resolution topographic data.EARTH SURFACE DYNAMICS,12(2). |
| MLA | "Quantifying the migration rate of drainage divides from high-resolution topographic data".EARTH SURFACE DYNAMICS 12.2(2024). |
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