Detection of volcano-magnetic changes by aero-magnetic survey

4人出航到新西兰白岛，两点安装质子磁强计，2003财年开始地面延拓磁场观测，并进行SP测量；2004财年5人出航，恢复延拓磁场数据和地面重复磁场观测，用直升机对AIRRAID50米和100米高度进行航磁测量。平成17财年7人出航，进行了地面和空中重复磁测。不幸的是，白岛的火山活动平静，没有检测到显著的磁化变化。然而，该研究很大程度上解决了航磁测量的观测技术问题，即通过在地面安装高精度的GPS接收器和一只鸟来实现飞行传感器的定位。它问…通过执行差分分析，误差在1M或更少的情况下。为了避免直升机磁化对身体的影响，需要拆卸40米，而鸟挂系统就是其中的佼佼者。确定了获得稳定飞行的鸟的形状和圆柱形翅膀。这所大学拥有的高精度铯磁强计。开发了在PC机屏幕上实时显示GPS位置，用于路线导航的系统。也是能够证明本研究点燃的麻生、久州、樱岛、万代、浅马火山可以重复飞行实验的结果之一，通过对1996年和2004年在日本筑波举行的ISAG2006大气物理调查国际学术研讨会的分析，获得了探测地面观测的结果，得到了符合火山磁场变化50nT的结果，从而达到了利用大气磁测捕捉火山磁场变化的课题，这是本研究的大目标。较少

Four persons made a voyage to White Island of the New Zealand, the proton magnetometer was installed in two points, and ground continuation magnetic field observation was started and also SP measurement was performed in 2003 fiscal year.While five persons made a voyage in the 2004 fiscal year and performing recovery of continuation magnetic field data and ground repetition magnetic field observation, the aero-magnetic survey of the airraid altitudes 50m and 100m was carried out with helicopter. Seven persons made a voyage in the Heisei 17 fiscal year, and the repetition magnetic survey in the ground and the air was carried out. Unfortunately, volcanic activity of the White Island was calm and remarkable magnetic change was not detected. However, the observation technical problem about an air magnetism survey was mostly solved through this research.Namely, the positioning of the flight sensor was achieved with installation of highly precise GPS receiver in the ground and a bird. It asks … More with an error 1m or less by carrying out differential analysis. It is necessary to detach 40m to avoid the influence of magnetization of a helicopter to the body, and a bird hanging system is excellent in it. The form and cylinder wings of a bird for obtaining a stable flight have been determined. The highly precise cesium magnetometer has owned at the university. The system which displays a GPS position on a PC screen in realtime, and is used for route guidance has been developed.It is also one of the results that it was able to be shown that a flight experiment can be repeated in the volcano in Aso, Kuju, Sakurajima, Bandai, and Asama ignited by this research, and an air magnetic survey can carry out comparatively easily also by the researcher of a university.The subject which especially catches a volcanic magnetic field change by the air magnetic survey which was the big target of this research has been attained by having obtained the result which detects ground observation and a conformable volcanic magnetic field change of 50nT from the analysis of the air magnetism survey data in 1996 in the Kuju volcano, and 2004.These research results presented in the study group of the ISAG2006 air physics inquiry international symposium held in Tsukuba in January, 2006. Less