Editing Small-world network (section)

=== Applications to earth sciences ===

Many networks studied in geology and geophysics have been shown to have characteristics of small-world networks.  Networks defined in fracture systems and porous substances have demonstrated these characteristics.<ref>{{cite journal | vauthors = Yang XS | s2cid = 118655139 | title = Small-world networks in geophysics. | journal = Geophysical Research Letters | date = July 2001 | volume = 28 | issue = 13 | pages = 2549–52 | doi = 10.1029/2000GL011898 | bibcode = 2001GeoRL..28.2549Y | arxiv = 1003.4886 }}(2001)</ref>  The seismic network in the Southern California region may be a small-world network.<ref>{{cite journal | vauthors = Jiménez A, Tiampo KF, Posadas AM | title = Small world in a seismic network: the California case. | journal = Nonlinear Processes in Geophysics | date = May 2008 | volume = 15 | issue = 3 | pages = 389–95 | url = https://core.ac.uk/download/pdf/26891534.pdf | doi = 10.5194/npg-15-389-2008 | bibcode = 2008NPGeo..15..389J | doi-access = free }}</ref>  The examples above occur on very different spatial scales, demonstrating the [[scale invariance]] of the phenomenon in the earth sciences.