Table 1 Summary of estimation results of clock errors (see also Table 2). Note that stations in which clock errors occurred were not used for calculation of 98th percentiles of absolute values of clock errors
Volcano | Clock error (station, max. amplitude, period) | 98th percentiles of clock error |
|---|---|---|
Adatara | – | 0.01 s |
Akitakomagatake | – | 0.01 s |
Akitayakeyama | – | 0.02 s |
Aogashima | – | 0.01 s |
Asama | V.ASMB.U + 0.46 s (Jul.2021–Sep.2021) | 0.03 s |
V.ASME.U + 1.02 s (Apr.2020–Jun.2020) | ||
V.ASMG.U + 0.54 s (Jul.2020–Oct.2020) | ||
Aso | V2ASOE.U + 0.59 s (Dec.2021) | 0.04 s |
Atosanupuri | – | 0.02 s |
Azuma | – | 0.01 s |
Bandai | – | 0.02 s |
Chokaisan | – | 0.07 s |
Esan | – | 0.01 s |
Fuji | – | 0.03 s |
Hachijojima | – | 0.01 s |
Hakkoda | V.HKKF.U + 3.16 s (Jan.2018–Nov.2018) | 0.01 s |
V.HKMA.U + 0.32 s (Dec.2019–Jan.2020) | ||
Hakone | OK.MHK.U + 18.27 s (Jan.2017–Mar.2017) | 0.03 s |
Hakusan | – | 0.06 s |
Hokkaido-Komagatake | V.KGMH.U + 0.67 s, + 1.75 s (May.2017–Nov.2017, Mar.2018–Aug.2018) | 0.02 s |
Ioto | – | 0.02 s |
Iwakisan | – | 0.03 s |
Iwatesan | – | 0.01 s |
Izu-Oshima | N.GJKV.U + 8.01 s (Oct.2021) | 0.01 s |
N.ODKV.U -2.01 s (Oct.2021) | ||
N.OOHV.U -12.22 s (Oct.2021) | ||
N.OSMV.U -11.20 s (Oct.2021) | ||
Izu-Tobu | – | 0.02 s |
Kirishima | V.KIRA.U -0.68 s (Aug.2017) | 0.02 s |
V2KTCM.U + 0.41 s (Jul.2020–Sep.2020) | ||
Kozushima | V.KOTJ.U + 7.42 s (Dec.2019–Jul.2020) | 0.04 s |
Kuchinoerabu | – | 0.03 s |
Kujyu | – | 0.02 s |
Kurikomayama | – | 0.02 s |
Kusatsu | V.KSHA.U + 1.56 s, -0.84 s (Feb.2020–Aug.2020, Sep.2020–Nov.2020) | 0.01 s |
Kuttara | – | 0.02 s |
Meakan | V.MEAA.U + 0.31 s (Jun.2021–Sep.2021) | 0.02 s |