The ground under Marble Bar, Australia — measured by the Global Seismographic Network (IRIS/USGS) station IU MBWA and redrawn here every 15 minutes. A thin band means a quiet ground; a tall spike is a passing earthquake, near or on the other side of the planet.
| Mag | Where | When | Distance |
|---|---|---|---|
| M5.7 | 36 km WSW of Tambolaka, Indonesia | 1970-01-01 00:00 UTC | 1,295 km |
| M5.2 | 60 km NNW of Ruteng, Indonesia | 1970-01-01 00:00 UTC | 1,453 km |
| M5.1 | 119 km SSW of Gambiran Satu, Indonesia | 1970-01-01 00:00 UTC | 1,444 km |
| M5.0 | 42 km NNW of Ruteng, Indonesia | 1970-01-01 00:00 UTC | 1,434 km |
| M5.0 | 92 km N of Ruteng, Indonesia | 1970-01-01 00:00 UTC | 1,489 km |
| M5.0 | 45 km NNW of Ende, Indonesia | 1970-01-01 00:00 UTC | 1,428 km |
| M4.9 | 62 km NNW of Pante Makasar, Timor Leste | 1970-01-01 00:00 UTC | 1,460 km |
| M4.9 | 31 km NNE of Kupang, Indonesia | 1970-01-01 00:00 UTC | 1,322 km |
| M4.9 | 54 km NE of Labuan Bajo, Indonesia | 1970-01-01 00:00 UTC | 1,452 km |
| M4.8 | 85 km N of Ruteng, Indonesia | 1970-01-01 00:00 UTC | 1,482 km |
| Mag | Where | When | Distance |
|---|---|---|---|
| M7.7 | 12 km WSW of Pitaloza Arriba, Panama | 1970-01-01 00:00 UTC | 17,346 km |
| M7.0 | 191 km ENE of Nagqu, China | 1970-01-01 00:00 UTC | 6,562 km |
| M6.9 | 76 km NE of Ozernovskiy, Russia | 1970-01-01 00:00 UTC | 8,912 km |
| M6.9 | 197 km WNW of Port-Olry, Vanuatu | 1970-01-01 00:00 UTC | 4,903 km |
| M6.8 | central Mid-Atlantic Ridge | 1970-01-01 00:00 UTC | 14,974 km |
| M6.7 | central Mid-Atlantic Ridge | 1970-01-01 00:00 UTC | 15,048 km |
Waves from a large earthquake reach this station minutes later — up to about 20 minutes from the far side of the Earth. Look for a spike in the helicorder at that time.