Search NASA⌕ Search

Engineering topics

Cohen, Yossi

Publications and source records attributed to Cohen, Yossi.

4 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2015

Path selection in the growth of rivers

Significance The complex patterns of river networks evolve from interactions between growing streams. Here we show that the principle of local symmetry, a concept originating in fracture mechanics, explains the path followed by growing streams fed by groundwater. Although path selection does not by itself imply a rate of growth, we additionally show how local symmetry may be used to infer how rates of growth scale with water flux. Our methods are applicable to other problems of unstable pattern formation, such as the growth of hierarchical crack patterns and geologic fault networks, where dynamics remain poorly understood.

54 ENVIRONMENTAL SCIENCES↗