2023
DOI: 10.1029/2023jf007189
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A Generalized Area‐Based Framework to Quantify River Mobility From Remotely Sensed Imagery

Evan Greenberg,
Austin J. Chadwick,
Vamsi Ganti

Abstract: Rivers are the primary conduits of water and sediment across Earth’s surface. In recent decades, rivers have been increasingly impacted by climate change and human activities. The availability of global‐coverage satellite imagery provides a powerful avenue to study river mobility and quantify the impacts of these perturbations on global river behavior. However, we lack remote sensing methods for quantifying river mobility that can be generally applied across the diversity of river planforms (e.g., meandering, … Show more

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Cited by 1 publication
(11 citation statements)
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“…Floodplain reworking and channel-overlap decay timescales monotonically increase as rivers become more sinuous and partition flow into fewer active threads (Figures 3a and 3b). These timescales reflect the total river mobility integrated across various mobility processes at the reach scale (Greenberg et al, 2023). Thus, continuous decline in mobility timescales across the channel form index can be achieved by characteristic differences in mobility processes, that is, that the lateral migration that is faster and more widespread; that cutoffs are more frequent; avulsions that are larger scale and more frequent; or some combination of the above (Text S2 in Supporting Information S1).…”
Section: Discussionmentioning
confidence: 99%
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“…Floodplain reworking and channel-overlap decay timescales monotonically increase as rivers become more sinuous and partition flow into fewer active threads (Figures 3a and 3b). These timescales reflect the total river mobility integrated across various mobility processes at the reach scale (Greenberg et al, 2023). Thus, continuous decline in mobility timescales across the channel form index can be achieved by characteristic differences in mobility processes, that is, that the lateral migration that is faster and more widespread; that cutoffs are more frequent; avulsions that are larger scale and more frequent; or some combination of the above (Text S2 in Supporting Information S1).…”
Section: Discussionmentioning
confidence: 99%
“…Area‐based mobility calculations track two quantities: the timescale over which rivers channelize floodplain, and the timescale over which the channel area changes positions (Greenberg et al., 2023). Area‐based mobility measurements have advantages over methods like bank line and centerline tracking.…”
Section: Methodsmentioning
confidence: 99%
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