The ground under Ankara, Turkey — measured by the Global Seismographic Network (IRIS/USGS) station IU ANTO 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 |
|---|---|---|---|
| M5.1 | 21 km ESE of Feke, Turkey | 1970-01-01 00:00 UTC | 374 km |
| M4.9 | 17 km SE of Ambelókipoi, Greece | 1970-01-01 00:00 UTC | 1,050 km |
| M4.7 | 22 km E of Feke, Turkey | 1970-01-01 00:00 UTC | 373 km |
| M4.7 | 22 km E of Feke, Turkey | 1970-01-01 00:00 UTC | 373 km |
| M4.6 | 27 km WSW of Palaióchora, Greece | 1970-01-01 00:00 UTC | 981 km |
| M4.6 | 6 km NNE of Sámi, Greece | 1970-01-01 00:00 UTC | 1,058 km |
| M4.5 | 3 km W of Thívai, Greece | 1970-01-01 00:00 UTC | 838 km |
| M4.5 | 13 km NNE of Mamrux, Azerbaijan | 1970-01-01 00:00 UTC | 1,195 km |
| M4.5 | 3 km ENE of Chalandrítsa, Greece | 1970-01-01 00:00 UTC | 967 km |
| M4.5 | 2 km W of Lunca Jariștei, Romania | 1970-01-01 00:00 UTC | 823 km |
| Mag | Where | When | Distance |
|---|---|---|---|
| M7.7 | 12 km WSW of Pitaloza Arriba, Panama | 1970-01-01 00:00 UTC | 11,417 km |
| M7.0 | 191 km ENE of Nagqu, China | 1970-01-01 00:00 UTC | 5,435 km |
| M6.9 | 76 km NE of Ozernovskiy, Russia | 1970-01-01 00:00 UTC | 8,481 km |
| M6.9 | 197 km WNW of Port-Olry, Vanuatu | 1970-01-01 00:00 UTC | 14,610 km |
| M6.8 | central Mid-Atlantic Ridge | 1970-01-01 00:00 UTC | 6,922 km |
| M6.7 | central Mid-Atlantic Ridge | 1970-01-01 00:00 UTC | 6,908 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.