Summary

We do interdisciplinary research to advance our understanding of complex temporal patterns of places around the world. Despite variation in population, climate, economics, politics, and culture, everyone around the world shares the same time constraints. No country or city has more time in a day (or in a week) than anyone else. Yet, how early or late in the day places are active (e.g., popular dining times at restaurants) change from country to country, city to city, and neighborhood to neighborhood. The temporal patterns of a place reflect the unique social, cultural, and economic dynamics of that place. We investigate how these temporal patterns are created, disrupted, and evolve, and how they influence the social and physical aspects of places.

Approach

  • Integrated data sources (hours of operation, popular times, traffic & mobility data, social media)
  • Multiple spatial scales (commercial locations, cities, and continental regions)
  • Multiple temporal scales (hourly time steps, seasonal shifts, and yearly changes)
  • Global data (over 250 million data points around the world)

Objectives

  • Improve population modeling Land use enrichment
  • Explore climate influences on temporal patterns
  • Measure the influence of seasonal shifts in activity patterns
  • Estimate energy use metrics Identify shifts in aggregate mobility
  • Measure change in public and private work weeks and weekends
  • Anomalous event detection and intensity

Publications

YearCitation
Sparks, K., Piburn, J., Berres, A., Urban, M., Thakur, G. in press. Temporal Dynamics of Place and Mobility. Advances in Scalable and Intelligent Geospatial Analytics: Challenges and Applications.
2022Sparks, K., Moehl, J., Weber, E., Brelsford, C. and Rose, A., 2022. Shifting temporal dynamics of human mobility in the United States. Journal of Transport Geography, 99, p.103295.
2020Sparks, K., Thakur, G., Pasarkar, A. and Urban, M., 2020. A global analysis of cities’ geosocial temporal signatures for points of interest hours of operation. International Journal of Geographical Information Science, 34(4), pp.759-776.

Contact Us

Kevin Sparks

Location Intelligence Group
Human Dynamics Section,
Geospatial Science and Human Security Division National Security and Sciences Directorate
Oak Ridge National Laboratory

Gautam Thakur

Location Intelligence Group
Human Dynamics Section,
Geospatial Science and Human Security Division National Security and Sciences Directorate
Oak Ridge National Laboratory