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Evacuees and Migrants Exhibit Different Migration Systems After the Great East Japan Earthquake and Tsunami.
Demography ( IF 4.222 ) Pub Date : 2020-05-19 , DOI: 10.1007/s13524-020-00883-7
Mathew E Hauer 1 , Steven R Holloway 2 , Takashi Oda 3
Affiliation  

Research on the destinations of environmentally induced migrants has found simultaneous migration to both nearby and long-distance destinations, most likely caused by the comingling of evacuee and permanent migrant data. Using a unique data set of separate evacuee and migration destinations, we compare and contrast the pre-, peri-, and post-disaster migration systems of permanent migrants and temporary evacuees of the Great East Japan Earthquake and Tsunami. We construct and compare prefecture-to-prefecture migration matrices for Japanese prefectures to investigate the similarity of migration systems. We find evidence supporting the presence of two separate migration systems—one for evacuees, who seem to emphasize short distance migration, and one for more permanent migrants, who emphasize migration to destinations with preexisting ties. Additionally, our results show that permanent migration in the peri- and post-periods is largely identical to the preexisting migration system. Our results demonstrate stability in migration systems concerning migration after a major environmental event.

中文翻译:

在东日本大地震和海啸之后,撤离人员和移民表现出不同的迁移系统。

对环境引起的移民目的地的研究发现,同时向附近和长途目的地迁移,这很可能是由撤离者和永久移民数据混合引起的。我们使用单独的撤离者和迁移目的地的独特数据集,比较和对比了东日本大地震和海啸的永久迁移者和临时撤离者的灾前、灾前和灾后迁移系统。我们构建并比较了日本各县的县到县迁移矩阵,以研究迁移系统的相似性。我们发现证据支持存在两种独立的移民系统——一个是针对撤离者,他们似乎强调短距离迁移,另一个针对更永久的移民,他们强调迁移到具有预先存在联系的目的地。此外,我们的结果表明,前期和后期的永久迁移与先前存在的迁移系统基本相同。我们的结果证明了在重大环境事件后迁移系统的稳定性。
更新日期:2020-05-19
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