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| Type: | Resource | |
| Storage: | The size of this resource is 167.1 MB | |
| Created: | Dec 27, 2020 at 2:24 p.m. | |
| Last updated: | Jan 21, 2021 at 1:41 a.m. | |
| DOI: | 10.4211/hs.0b93e7c659fe4fc59bf6a202c269313c | |
| Citation: | See how to cite this resource | |
| Content types: | Single File Content |
| Sharing Status: | Published |
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| Views: | 1523 |
| Downloads: | 18 |
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Abstract
Climate signatures recorded in the geometry of branching streams provide insight into climate and landscape histories on Earth and other planetary bodies. Recent findings establish that branching angles are narrower and stream profiles are straighter in more arid climates. However, these two observations have been attributed to different mechanisms. Aggregating publicly sourced data from the National Hydrography Dataset, we demonstrate that for US watersheds the difference in slope between confluent streams increases with humidity, and streams with a greater difference in slope tend to branch at wider angles. Our observations suggest a branching angle endmember of 90 degrees when stream slopes are most different. Using a simple model of runoff erosion, we show how this variation in relative stream slopes can be explained by a shift in streamflow accumulation across climate regimes. These findings connect previously observed climate signatures in branching angles and stream profiles, suggesting that both record the same control of aridity on surface flow.
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Content
Related Resources
| The content of this resource is derived from | Wieczorek, M.E., Jackson, S.E., and Schwarz, G.E., 2018, Select Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Network Routed Upstream Watersheds for the Conterminous United States (ver. 2.0, November 2019): U.S. Geological Survey data release, https://doi.org/10.5066/F7765D7V. |
| The content of this resource is derived from | USEPA, & USGS. (2012). National Hydrography Dataset Plus Version 2.1. (Available at: https://nhdplus.com/NHDPlus/) |
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| Name | Organization | Address | Phone | Author Identifiers |
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| Department of Geosciences | Princeton University | Princeton University Department of Geosciences, Guyot Hall, Princeton NJ 08544 | 609-258-4101 |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
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