Observation of very week geomagnetic fields using SQUID magnetometers

2015 Fiscal Year Final Research Report

• Project/Area Number: 26610143
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Solid earth and planetary physics
• Research Institution: Kanazawa Institute of Technology
• Principal Investigator: KAWAI JUN 金沢工業大学, 先端電子技術応用研究所, 教授 (10468978)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: SQUID磁力計 / 地磁気 / シューマン共鳴 / 電離層アルフベン波共鳴 / 高感度

Outline of Final Research Achievements

In this study, we have developed a superconducting quantum interference device (SQUID) magnetometer system for high-sensitive observation of geomagnetic fields. We succeeded on observation of Schumann Resonance (SR) up to 6th mode and Ionospheric Alfven Resonance (IAR) using this system in Shiramine, Hakusan-city, Ishikawa Prefecture. In these results, we have confirmed that the system has a good performance to detect very week geomagnetic magnetic field variation. We also expect that this system is useful for observation of geomagnetic phenomena that has not been detected with conventional magnetometers.

Free Research Field

超伝導