Table 2 Time information for 3 m-height tsunami waves recorded by five tide gauges. The time difference was derived by subtracting 42 min, the earliest registered time of IGWstsu at 190 km altitude. A positive value indicates that tsunami waves arrived after the IGWstsu were detected.
From: A case study of the three-dimensional co-seismic ionospheric disturbance evolution
Tide gauges | Latitude (°) | Longitude (°) | Dtsu (km) | Time after the shock (min) | Time difference (min) |
|---|---|---|---|---|---|
Ishinomaki | 38.3 | 141.5 | 237 | 33 | − 9 |
Miyako | 39.6 | 141.9 | 289 | 35 | − 7 |
Kuji | 40.2 | 141.8 | 356 | 50 | + 8 |
Erimo | 42.0 | 143.2 | 505 | 58 | + 16 |
Nemuro | 43.3 | 145.6 | 662 | 71 | + 29 |
