Table 6 Detailed snippets of few examples from the IVS analysis report
S. No. | Session | Problem | % Scheduled observations used |
|---|---|---|---|
1 | 2014-05-17-XA | HOBART12 and HOBART26 missed the first ~ 7 h due to high winds TSUKUB32 also missed ~ 2 h due to high winds | HOBART12–61.3% HOBART26–62.6% TSUKUB32–80.2% |
2 | 2020-04-14-XA | Strong winds at NyAlesund. NYALE13S did not observe and NYALES20 observed only the last 10.5 h ZELENCHK missed ~ 2 h, wind stowed | NYALE13S–0% NYALES20–41.7% ZELENCHK–80.1% |
3 | 2021-06-28-XA | WETTZELL: thunder strike hit the area of the observatory (00:16–02:20 UTC) | WETTZELL–55.8% |
4 | 2021-02-01-VG | GGAO12M did not observe due to winter storm | GGAO12M–0% |
5 | 2021-08-10-XA | ZELENCHK: thunderstorm (21:09–01:15) | ZELENCHK–54.6% |
6 | 2021-12-05-XK | Due to blizzard, MK-VLBA did not observe | MK-VLBA–0% |
7 | 2021-10-18-XA | MATERA: RFI in S-band particularly RAEGSMAR: RFI in S-band particularly YARRA12M: wind stowed (04:40–05:16) | MATERA–65.6% RAEGSMAR–66.6% YARRA12M–55.3% |
8 | 2021-11-08-XA | SEJONG is very noisy NYALE13S snow storm 15:25–17:00 | SEJONG–47.2% NYALE13S–70.0% |
9 | 2021-11-04-XE | HART15M: wind stowed a few times | HART15M–66.7% |
10 | 2021-07-26-XA | ISHIOKA: stopped the antenna from start to 208-0049a, because typhon was approaching. Few missed scans due to antenna safety and motor troubles | ISHIOKA–35.7% |
11 | 2021-11-17-XN | HARTRAO: no data 18:26–07:22. The log says “Just over 13 h of data was lost due to a storm induced power supply failure on the antenna that could only be repaired once a technician got to site in the morning.” | HARTRAO–32.7% |