Abstract:
:Tidal deltas are characterized by a dendritic network of distributaries that transport water and sediments to the ocean. Here, I show that the distributaries self-organize to uniformly redistribute the tidal prism across the entire delta system. The 2 opposite mechanisms of channel formation by avulsion and channel abandonment drive the entire delta toward a critical state at which every channel is close to the silting threshold. Under these conditions the delta reaches self-organized criticality, with changes of its planimetric channel distribution occurring across several spatial scales.
journal_name
Proc Natl Acad Sci U S Aauthors
Fagherazzi Sdoi
10.1073/pnas.0806668105subject
Has Abstractpub_date
2008-12-02 00:00:00pages
18692-5issue
48eissn
0027-8424issn
1091-6490pii
0806668105journal_volume
105pub_type
杂志文章abstract::In photosynthesis, light is captured by antenna proteins. These proteins transfer the excitation energy with almost 100% quantum efficiency to the reaction centers, where charge separation takes place. The time scale and pathways of this transfer are controlled by the protein scaffold, which holds the pigments at opti...
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更新日期:1984-07-01 00:00:00
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更新日期:2003-06-24 00:00:00
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journal_title:Proceedings of the National Academy of Sciences of the United States of America
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