Reviewed by USGSGreece22y ago
M2.8 earthquake 6 km NW of Galatás, Greece
Monday, September 13, 2004, 20:35:48 UTC · 37.540°N, 23.400°E
A magnitude 2.8 earthquake struck 6 km NW of Galatás, Greece on Monday, September 13, 2004, 20:35:48 UTC, at a depth of 8.0 km (shallow).
- Magnitude
- 2.8
- Minor · ml
- Depth
- 8 km
- Shallow
- Felt reports
- 0
- Did You Feel It?
- Est. shaking
- —
- No ShakeMap
- PAGER alert
- None
- Not issued
- Tsunami
- No flag
- USGS feed
Outlined circle: this earthquakeDashed circle: 50 km aftershock search area
In context
How big was it, and why here?
Energy released
239 kg of TNT
That is about 1/63,000 of the Hiroshima bomb. A magnitude 5.0 releases about 1,995 times more energy.
Tectonic setting
100 km
from the nearest mapped plate boundary, between the Aegean Sea and Eurasian plates. Earthquakes this far from a boundary happen on faults inside a plate, often less frequently but sometimes strongly.
Depth: shallow
8 km
Shallow earthquakes (under 70 km) produce the strongest surface shaking for their size, so they are the ones most likely to cause damage near the epicenter.
Did You Feel It?
Where it was felt
No “Did You Feel It?” reports have been published for this event yet. If you felt it, you can add your report on the USGS website.
I felt it — report to USGS ↗USGS PAGER estimate
Who was exposed to shaking
USGS publishes PAGER impact estimates for significant earthquakes, usually within an hour. No PAGER estimate is available for this event.
After the main event
Aftershocks within 50 km
USGS lists 3 M2.5+ earthquakes within 50 km in the following 30 days; the largest was M2.8 on September 30, 2004. Most nearby activity right after a large earthquake is aftershocks, which usually become less frequent over days and weeks.
Regional history
Past M5+ earthquakes within 300 km
USGS lists 512 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 7.9Southern GreeceAugust 11, 1903 · 175 km S of this epicenter
- 7.719 km SSE of Amorgós, GreeceJuly 9, 1956 · 247 km E of this epicenter
- 7.34 km WNW of Koróni, GreeceOctober 6, 1947 · 155 km SW of this epicenter
- 7.261 km W of Eresós, GreeceDecember 19, 1981 · 247 km NE of this epicenter
- 7.29 km NNW of Karaburun, TurkeyJuly 23, 1949 · 300 km NE of this epicenter
- 7.026 km SW of Lixoúri, GreeceJanuary 17, 1983 · 284 km W of this epicenter
- 7.055 km S of Mýrina, GreeceFebruary 19, 1968 · 246 km NE of this epicenter
- 6.815 km ENE of Póros, GreeceAugust 12, 1953 · 227 km W of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 152 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 31,273 recorded deaths. The most severe:
- 1883M7.3
Ayvalik, Izmir, Cesme
15 Oct 1883 · 260 km away · intensity X
15,000 deathsExtreme damage ($25M+)
- 1881M7.3
Khios; Turkey: Cesme
3 Apr 1881 · 262 km away · intensity XI
7,866 deathsExtreme damage ($25M+)tsunami
- 1810
Crete: Iraklion (Candia)
16 Feb 1810 · 268 km away · intensity X
3,000 deathsSevere damage ($5–24M)tsunami
- 1750
Morea,Cerigo
7 Jun 1750 · 153 km away · intensity X
2,000 deaths
- 1953M7.2
Lixouri-Argostoli (Kephallenia)
12 Aug 1953 · 243 km away · intensity X
476 deaths$100 million damagetsunami
- 1820M6.9
Zakinthos (Zante)
29 Dec 1820 · 191 km away · intensity X
388 deathsSevere damage ($5–24M)tsunami
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.