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Article: Emergency communications after earthquake reveal social network backbone of important ties

TitleEmergency communications after earthquake reveal social network backbone of important ties
Authors
Keywordsearthquake disaster
quasi-experiment
social network activation
structural embeddedness
tie strength
Issue Date2-Nov-2023
PublisherOxford University Press
Citation
PNAS Nexus, 2023, v. 2, n. 11 How to Cite?
Abstract

Social networks provide a basis for collective resilience to disasters. Combining the quasi-experimental context of a major earthquake in Ya’an, China, with anonymized mobile telecommunications records regarding 91,839 Ya’an residents, we use initial bursts of postdisaster communications (e.g. choice of alter, order of calls, and latency) to reveal the “important ties” that form the social network backbone. We find that only 26.8% of important ties activated during the earthquake were the strongest ties during normal times. Many important ties were hitherto latent and weak, only to become persistent and strong after the earthquake. We show that which ties activated during a sudden disaster are best predicted by the interaction of embeddedness and tie strength. Moreover, a backbone of important ties alone (without the inclusion of weak ties ordinarily seen as important to bridge communities) is sufficient to generate a hierarchical structure of social networks that connect a disaster zone's disparate communities.


Persistent Identifierhttp://hdl.handle.net/10722/340359
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorJia, Jayson S-
dc.contributor.authorLi, Yiwei-
dc.contributor.authorLiu, Sheng-
dc.contributor.authorChristakis, Nicholas A-
dc.contributor.authorJia, Jianmin -
dc.date.accessioned2024-03-11T10:43:34Z-
dc.date.available2024-03-11T10:43:34Z-
dc.date.issued2023-11-02-
dc.identifier.citationPNAS Nexus, 2023, v. 2, n. 11-
dc.identifier.urihttp://hdl.handle.net/10722/340359-
dc.description.abstract<p>Social networks provide a basis for collective resilience to disasters. Combining the quasi-experimental context of a major earthquake in Ya’an, China, with anonymized mobile telecommunications records regarding 91,839 Ya’an residents, we use initial bursts of postdisaster communications (e.g. choice of alter, order of calls, and latency) to reveal the “important ties” that form the social network backbone. We find that only 26.8% of important ties activated during the earthquake were the strongest ties during normal times. Many important ties were hitherto latent and weak, only to become persistent and strong after the earthquake. We show that which ties activated during a sudden disaster are best predicted by the interaction of embeddedness and tie strength. Moreover, a backbone of important ties alone (without the inclusion of weak ties ordinarily seen as important to bridge communities) is sufficient to generate a hierarchical structure of social networks that connect a disaster zone's disparate communities.</p>-
dc.languageeng-
dc.publisherOxford University Press-
dc.relation.ispartofPNAS Nexus-
dc.subjectearthquake disaster-
dc.subjectquasi-experiment-
dc.subjectsocial network activation-
dc.subjectstructural embeddedness-
dc.subjecttie strength-
dc.titleEmergency communications after earthquake reveal social network backbone of important ties-
dc.typeArticle-
dc.identifier.doi10.1093/pnasnexus/pgad358-
dc.identifier.scopuseid_2-s2.0-85178562480-
dc.identifier.volume2-
dc.identifier.issue11-
dc.identifier.eissn2752-6542-
dc.identifier.isiWOS:001112773900003-

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