Digital Surveillance for Monitoring Environmental Health Threats: A Case Study Capturing Public Opinion from Twitter about the 2019 Chennai Water Crisis

International Journal of Environmental Research and Public Health
Jiangmei XiongJohn A Naslund

Abstract

Globally, water scarcity has become a common challenge across many regions. Digital surveillance holds promise for monitoring environmental threats to population health due to severe drought. The 2019 Chennai water crisis in India resulted in severe disruptions to social order and daily life, with local residents suffering due to water shortages. This case study explored public opinion captured through the Twitter social media platform, and whether this information could help local governments with emergency response. Sentiment analysis and topic modeling were used to explore public opinion through Twitter during the 2019 Chennai water crisis. The latent Dirichlet allocation (LDA) method identified topics that were most frequently discussed. A naïve Tweet classification method was built, and Twitter posts (called tweets) were allocated to identified topics. Topics were ranked, and corresponding emotions were calculated. A cross-correlation was performed to examine the relationship between online posts about the water crisis and actual rainfall, determined by precipitation levels. During the Chennai water crisis, Twitter users posted content that appeared to show anxiety about the impact of the drought, and also expressed concer...Continue Reading

References

Jul 31, 2012·PLoS Computational Biology·Marcel SalathéAlessandro Vespignani
Mar 5, 2016·Science Advances·Mesfin M Mekonnen, Arjen Y Hoekstra
Apr 2, 2016·Science Advances·Yury KryvasheyeuManuel Cebrian
Jul 21, 2017·PloS One·Oliver GruebnerSandro Galea
Oct 20, 2018·International Journal of Environmental Research and Public Health·Oliver GruebnerSandro Galea
Feb 12, 2019·Preventive Medicine·Yulin HswenJared B Hawkins

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Citations

Jun 3, 2021·International Journal of Environmental Research and Public Health·Qiang YuXiaomin Yang

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Software Mentioned

Google Translate
SentiSAIL
VADER
WordNet
Valence Aware Dictionary and Sentiment Reasoner ( VADER )
LDA
WaterScope
Gensim

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