Sensing dynamic human activity zones using geo-tagged big data in Greater London, UK during the COVID-19 pandemic

• Tongxin Chen ,

  Roles Conceptualization, Data curation, Formal analysis, Methodology, Software, Visualization, Writing – original draft, Writing – review & editing

  * E-mail: tongxin.chen.18@ucl.ac.uk (TC); tao.cheng@ucl.ac.uk (TC)

  Affiliation SpaceTimeLab for Big Data Analytics, Department of Civil, Environmental and Geomatic Engineering, University College London, London, United Kingdom

  https://orcid.org/0000-0003-1763-6876

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• Di Zhu,

  Roles Investigation, Methodology, Visualization, Writing – review & editing

  Affiliation Department of Geography, Environment and Society, University of Minnesota, Twin Cities, MN, United States of America

  https://orcid.org/0000-0002-3237-6032

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• Tao Cheng ,

  Roles Funding acquisition, Resources, Supervision, Validation, Writing – review & editing

  * E-mail: tongxin.chen.18@ucl.ac.uk (TC); tao.cheng@ucl.ac.uk (TC)

  Affiliation SpaceTimeLab for Big Data Analytics, Department of Civil, Environmental and Geomatic Engineering, University College London, London, United Kingdom

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• Xiaowei Gao,

  Roles Data curation, Software, Visualization

  Affiliation SpaceTimeLab for Big Data Analytics, Department of Civil, Environmental and Geomatic Engineering, University College London, London, United Kingdom

  https://orcid.org/0000-0003-3273-7499

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• Huanfa Chen

  Roles Investigation, Validation

  Affiliation Centre for Advanced Spatial Analysis, Bartlett School of Architecture, University College London, London, United Kingdom

  https://orcid.org/0000-0002-4518-7601

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