15:45 〜 16:00
[MAG37-02] I30JP station repair following damage by typhoon “FAXAI”
キーワード：CTBT、National Data Centre、インフラサウンド、波形解析、台風
Tremendous typhoon “FAXAI” attacked Chiba prefecture, where I30JP was installed, on 8th September 2019. It brought strong wind and heavy rainfall widely. Barometric pressure when it landed in Chiba prefecture was 960hPa. It caused tremendous damage around Chiba especially by strong wind. Power outage continued for more than 2 weeks in the vast area of Chiba prefecture.
In I30JP, IMS infrasound station in Japan, although observation data of I30H1 – I30H6 are normally transmitted to IDC miraculously, in each site so many cedar trees were fallen and observation facilities were heavily damaged, such as security fences and pipe array.
The remedial actions have been taken for the typhoon damages as the unscheduled maintenance by October 2020. The surrounding environment has been quite changed at I30H6 site before and after the typhoon. We also analyzed changes in the characteristics of the infrasound waveform data after the station repair.
In I30JP, IMS infrasound station in Japan, although observation data of I30H1 – I30H6 are normally transmitted to IDC miraculously, in each site so many cedar trees were fallen and observation facilities were heavily damaged, such as security fences and pipe array.
The remedial actions have been taken for the typhoon damages as the unscheduled maintenance by October 2020. The surrounding environment has been quite changed at I30H6 site before and after the typhoon. We also analyzed changes in the characteristics of the infrasound waveform data after the station repair.