Ethnic differences in time and space based on mobile positioning data

Authors: Siiri Silm*, University of Tartu, Rein Ahas, University of Tartu, Veronika Mooses, University of Tartu
Topics: Ethnic Geography, Ethnicity and Race, Population Geography
Keywords: Ethnic segregation, mobile positioning, activity space
Session Type: Paper
Day: 4/11/2018
Start / End Time: 3:20 PM / 5:00 PM
Room: Grand Ballroom A, Astor, 2nd Floor
Presentation File: No File Uploaded


Spatial mobility of people continues to grow and an increasing number of activities take place outside the place of residence. The approach in this presentation takes into account people’s entire activity space by analyzing ethnic differences. In addition, three aspects are outlined in which mobile positioning data allows to get a more detailed picture of different aspects of segregation: 1) temporal variation of ethnic segregation (during a day, a week, a year, and holidays); 2) ethnic segregation in different activity places (places of residence, workplaces and out-of-home non-employment activity places); 3) ethnic differences in activity space by age groups. We compare Russian-speaking minority with Estonian majority in Estonia. We evaluate differences in activity spaces using passive mobile positioning data, consisting of Call Detail Records (CDR) that include call activities, their locations and timing. To measure ethnic differences we use segregation indices, density patterns, and activity space measures of different ethnic groups. Studies show that ethnic groups are more unevenly distributed in the evenings and more evenly on working hours. Ethnic distribution is more uneven on residential areas (by census data) than most of the periods according to mobile positioning data. Segregation is somewhat higher in places of residence than in workplace, but much more lower in out-of-home non-employment activity districts. Minority group visits tend to occur more in districts that are predominantly populated by their own ethnic group. Differences in activity space measures in younger age groups are bigger than in older age groups.

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