セミナーシリーズ
国際経済学セミナー（2026.10.29）
坪田 建明（法政大学・教授）
- 開催日：
- 2026年10月29日（木）16:45～18:15
- 場所：
- 京都大学大学院経済学研究科 法経東館8F リフレッシュルームおよびオンライン会場（ハイブリッド開催） ※事前登録が必要です
- 言語：
- 英語
- コーディネーター：
- 神事 直人
タイトル: “The Partition of India and the Spatial Restructuring of
Maritime Networks”
Abstract : This paper examines how permanent political borders reshape transport networks, using the 1947 Partition of India as a historical shock to regional integration. We construct a digitized port-pair dataset from the Lloyd’s Shipping Index that tracks vessel movements across nearly a century and estimate Difference-in-Differences specifications within a structural gravity framework. We find that the Partition significantly reduced vessel movements on routes that shifted from domestic to international status. After accounting for network-wide diversion, this direct disruption was followed by a delayed reallocation of traffic toward alternative domestic routes, indicating that the adjustment of transport networks occurred gradually rather than immediately. The Partition also altered the topology of the maritime network. Established colonial hubs lost regional connectivity, while newly formed national gateways expanded their domestic and global connections. These changes were accompanied by a weakening of historical links with the United Kingdom and greater diversification of international connections. Overall, the results show that political disintegration can have persistent effects on transport networks by disrupting established links and inducing a long-run reorganization of maritime connectivity.
・詳細は下記のセミナーHPでご確認下さい。
http://www.econ.kyoto-u.ac.jp/~jinji/Project/seminar.html (日本語)
http://www.econ.kyoto-u.ac.jp/~jinji/Project/seminar_EN.html (英語)
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