Big data show idiosyncratic patterns and rates of geomorphic river mobility

IF 15.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Nature Communications Pub Date : 2025-04-05 DOI:10.1038/s41467-025-58427-9

Richard J. Boothroyd, Richard D. Williams, Trevor B. Hoey, Gary J. Brierley, Pamela L. M. Tolentino, Esmael L. Guardian, Juan C. M. O. Reyes, Cathrine J. Sabillo, Laura Quick, John E. G. Perez, Carlos P. C. David

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Abstract

Big data present unprecedented opportunities to test long-standing theories regarding patterns and rates of geomorphic river adjustments. Here, we use locational probabilities derived from Landsat imagery (1988-2019) to quantify the dynamics of 600 km² of riverbed in 10 Philippine catchments. Analysis of lateral adjustments reveals spatially non-uniform variability in along-valley patterns of geomorphic river mobility, with zones of relative stability interspersed with zones of relative instability. Hotspots of mobility vary in magnitude, size and location between catchments. We could not identify monotonic relationships between local factors (active channel width, valley floor width and confinement ratio) and mobility. No relation between the channel pattern type and rates of adjustment was evident. We contend that satellite-derived locational probabilities provide a spatially continuous dynamic metric that can help unravel and contextualise forms and rates of geomorphic river adjustment, thereby helping to derive insights into idiosyncrasies of river behaviour in dynamic landscapes.

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大数据显示了地貌河流流动的特殊模式和速率

大数据为检验长期存在的关于地貌河流调整模式和速率的理论提供了前所未有的机会。在这里，我们使用来自陆地卫星图像（1988-2019）的位置概率来量化菲律宾10个集水区600平方公里河床的动态。横向调整分析揭示了地貌河流沿流域流动格局在空间上的不均匀变异性，相对稳定带穿插着相对不稳定带。流动热点的大小、大小和位置在汇水区之间各不相同。我们不能确定局部因素（活动通道宽度、谷底宽度和约束比）与流动性之间的单调关系。通道模式类型和调整速率之间没有明显的关系。我们认为，卫星衍生的位置概率提供了一个空间连续的动态度量，可以帮助揭示和背景化地貌河流调整的形式和速度，从而有助于深入了解动态景观中河流行为的特质。

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来源期刊

Nature Communications Biological Science Disciplines-

CiteScore

24.90

自引率

2.40%

发文量

6928

审稿时长

3.7 months

期刊介绍： Nature Communications, an open-access journal, publishes high-quality research spanning all areas of the natural sciences. Papers featured in the journal showcase significant advances relevant to specialists in each respective field. With a 2-year impact factor of 16.6 (2022) and a median time of 8 days from submission to the first editorial decision, Nature Communications is committed to rapid dissemination of research findings. As a multidisciplinary journal, it welcomes contributions from biological, health, physical, chemical, Earth, social, mathematical, applied, and engineering sciences, aiming to highlight important breakthroughs within each domain.