  Tabriz Kirkuk Baghdad  | |
| UTC time | 1930-05-06 22:34:26 |
|---|---|
| ISC event | 907354 |
| USGS-ANSS | ComCat |
| Local date | May 7, 1930 |
| Local time | 01:34:26 IRST |
| Magnitude | 7.1 Mw[1] |
| Depth | 15 km (9.3 mi)[1] |
| Epicenter | 38°05′N 44°47′E / 38.09°N 44.78°E[1] |
| Fault | Salmas Fault[2] |
| Type | Oblique-slip |
| Areas affected | Iran, Turkey |
| Max. intensity | MMI IX (Violent)[3] |
| Landslides | Yes |
| Foreshocks | 5.4 mb May 6 at 07:03:26[4] |
| Casualties | 1,360–3,000 killed[5] |
The 1930 Salmas earthquake occurred on May 7 at 01:34:26 IRST in West Azerbaijan Province, Iran. The earthquake, which was among Iran's largest, measured 7.1 on the moment magnitude scale and had a maximum Mercalli intensity of IX (Violent). A damaging foreshock occurred fifteen hours prior to the main event and served as a warning to the people that felt it strongly. Reports from seismologists and seismological organizations indicate that up to 3,000 fatalities may have occurred in northwest Iran and southeast Turkey.
Sixty villages (including the large settlement of Dilman, which was relocated and rebuilt as Salmas) were destroyed in the Salmas Plain and in the surrounding mountainous regions. A destructive aftershock sequence affected many villages, and in some cases, damage was inflicted on some that had escaped devastation during the mainshock. An inspection of the region was undertaken, but not until decades later, at which time substantial surface faulting and other ground effects were documented.
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