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One Evacuee Remains as Tokara Islands Reopen After Month-Long Seismic Swarm

Researchers attribute the swarm to a shallow magma dyke intrusion, cautioning that the end of tremors cannot yet be confirmed.

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Overview

  • Five more residents returned on August 2, leaving only one evacuee from Akusekijima after mass departures following the July 3 magnitude-6 lower quake.
  • The Japan Meteorological Agency logged 2,241 quakes of intensity 1 or higher since June 21, with no intensity-4 shocks observed since July 17.
  • Seismographs detected nearly 10,000 tremors—including many too faint to feel—over the first month, underscoring vigorous crustal fracturing beneath the islands.
  • Guesthouses reported a 90% plunge in July income compared with last year, and livestock farmers say transporting cattle poses its own risks and stress.
  • Toshima Village has approved ¥50,000 payments to each of 79 households on Akusekijima and Kotakarajima to help offset economic losses and aid repatriation.