Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL091413 |
Characteristic Scales of Drainage Reorganization in Cascadia | |
William T. Struble; Joshua J. Roering; Rebecca J. Dorsey; Rebecca Bendick | |
2020-12-28 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2020 |
英文摘要 | Variations in uplift, erosion, climate, and bedrock are commonly invoked as key controls on drainage basin morphology, yet the scale of landforms that define changes in regional drainage networks has not been addressed, limiting our ability to predict their planform evolution. Here we use 2D continuous wavelet transforms of topography in Cascadia to highlight dominant topographic features at different scales. Surprisingly, our wavelet analysis shows that for wavelengths >30km, the Cascadia Forearc Lowland (CFL) spans the entire margin. Separately, we compare observed catchment boundaries with synthetic boundaries generated on topography filtered with 2D Gaussian functions. We observe reorganization of synthetic drainage networks from an arc‐to‐coast drainage system into arc‐spanning, margin‐parallel river systems, akin to the modern Willamette River and coincident with the CFL. In concert with field observations of stream capture and Willamette Valley expansion, we propose that the Cascadia forearc is actively transitioning to a predominately margin‐parallel river system. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/311487 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | William T. Struble,Joshua J. Roering,Rebecca J. Dorsey,et al. Characteristic Scales of Drainage Reorganization in Cascadia[J]. Geophysical Research Letters,2020. |
APA | William T. Struble,Joshua J. Roering,Rebecca J. Dorsey,&Rebecca Bendick.(2020).Characteristic Scales of Drainage Reorganization in Cascadia.Geophysical Research Letters. |
MLA | William T. Struble,et al."Characteristic Scales of Drainage Reorganization in Cascadia".Geophysical Research Letters (2020). |
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