Reviewed by USGSGreece22y ago
M3.1 earthquake 4 km WSW of Livanátes, Greece
Wednesday, July 7, 2004, 08:19:36 UTC · 38.700°N, 23.000°E
A magnitude 3.1 earthquake struck 4 km WSW of Livanátes, Greece on Wednesday, July 7, 2004, 08:19:36 UTC, at a depth of 20.0 km (shallow).
- Magnitude
- 3.1
- Minor · ml
- Depth
- 20 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
674 kg of TNT
That is about 1/22,353 of the Hiroshima bomb. A magnitude 5.0 releases about 708 times more energy.
Tectonic setting
2 km
from the nearest mapped plate boundary, between the Aegean Sea and Eurasian plates. Earthquakes cluster along boundaries like this one, where plates collide, pull apart or slide past each other.
Depth: shallow
20 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 5 M2.5+ earthquakes within 50 km in the following 30 days; the largest was M3.1 on July 23, 2004. Most nearby activity right after a large earthquake is aftershocks, which usually become less frequent over days and weeks.
- 3.15 km SW of Mólos, Greece22y ago · 35 km W of this epicenter
- 3.05 km NNE of Límni, Greece22y ago · 33 km E of this epicenter
- 2.813 km NNE of Istiaía, Greece22y ago · 45 km NE of this epicenter
- 2.77 km ENE of Prokópi, Greece22y ago · 49 km E of this epicenter
- 2.65 km NNE of Loukísia, Greece22y ago · 46 km SE of this epicenter
Regional history
Past M5+ earthquakes within 300 km
USGS lists 539 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 7.34 km WNW of Koróni, GreeceOctober 6, 1947 · 231 km SW of this epicenter
- 7.2Aegean SeaNovember 8, 1905 · 209 km NE of this epicenter
- 7.261 km W of Eresós, GreeceDecember 19, 1981 · 202 km E of this epicenter
- 7.026 km SW of Lixoúri, GreeceJanuary 17, 1983 · 253 km W of this epicenter
- 7.055 km S of Mýrina, GreeceFebruary 19, 1968 · 186 km NE of this epicenter
- 6.97 km NNE of Ágios Nikólaos, GreeceSeptember 26, 1932 · 190 km N of this epicenter
- 6.815 km ENE of Póros, GreeceAugust 12, 1953 · 188 km W of this epicenter
- 6.86 km SW of Galaxídhion, GreeceMarch 31, 1965 · 71 km SW of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 182 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 29,235 recorded deaths. The most severe:
- 1883M7.3
Ayvalik, Izmir, Cesme
15 Oct 1883 · 282 km away · intensity X
15,000 deathsExtreme damage ($25M+)
- 1881M7.3
Khios; Turkey: Cesme
3 Apr 1881 · 287 km away · intensity XI
7,866 deathsExtreme damage ($25M+)tsunami
- 1750
Morea,Cerigo
7 Jun 1750 · 278 km away · intensity X
2,000 deaths
- 1867M7.0
Mitilini; Turkey: Izmir
7 Mar 1867 · 299 km away
563 deathsSevere damage ($5–24M)tsunami
- 1953M7.2
Lixouri-Argostoli (Kephallenia)
12 Aug 1953 · 197 km away · intensity X
476 deaths$100 million damagetsunami
- 1820M6.9
Zakinthos (Zante)
29 Dec 1820 · 186 km away · intensity X
388 deathsSevere damage ($5–24M)tsunami
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.