Construction of fast earthquake detection method: super-early warning of destructive earthquakes

2018 Fiscal Year Final Research Report

• Project/Area Number: 26289348
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Earth system and resources engineering
• Research Institution: Tokyo Metropolitan University
• Principal Investigator: OKUBO KAN 首都大学東京, システムデザイン研究科, 准教授 (90336446)
• Co-Investigator(Kenkyū-buntansha): 磯上 慎二 国立研究開発法人物質・材料研究機構, 磁性・スピントロニクス材料研究拠点, 主任研究員 (10586853)
• Research Collaborator: Nishikawa Kiyoshi
• Project Period (FY): 2014-04-01 – 2019-03-31
• Keywords: 地球磁場（地磁気）観測 / 地震検知 / SQUID磁力計

Outline of Final Research Achievements

Detecting the occurrence of a huge earthquake is one of the greatest goals of humanity. Especially in Japan, there are many active faults in the urban area where many people live and in the coastal area where the power plants are distributed.
In this research, magnetic fields measurement are employed. We develop a system that uses geomagnetic field signals that fluctuate with earthquake faulting, and examine the feasibility in detail. To develop a high-resolution magnetometer system, we conducted long-term precise geomagnetic observations using a high-temperature superconductor based superconducting quantum-interference device (HTS-SQUID) magnetometer system.

Free Research Field

波動情報工学

Academic Significance and Societal Importance of the Research Achievements

本研究により，実現可能性が明らかとなることで，新しい緊急地震警報システムへ発展することが期待される。巨大地震発生の検知・予測に貢献が出来，地球物理学や地震学だけでなく社会全体へも大きな貢献ができる可能性を秘めている。例えば，医療機関や原子力発電所などの施設にとって，地震発生を1秒でも早く知ることは極めて重要で，それは多くの人命を救うことにつながる。