QuakeScout
Magnitude3.4

Reviewed by USGSGreece45y ago

M3.4 earthquake 42 km SE of Karyes, Greece

Wednesday, April 28, 1982, 08:43:29 UTC · 39.969°N, 24.568°E

A magnitude 3.4 earthquake struck 42 km SE of Karyes, Greece on Wednesday, April 28, 1982, 08:43:29 UTC, at a depth of 10.0 km (shallow).

Magnitude
3.4
Minor · mb
Depth
10 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 earthquake

In context

How big was it, and why here?

Energy released

2 tons of TNT

That is about 1/7,931 of the Hiroshima bomb. A magnitude 5.0 releases about 251 times more energy.

Tectonic setting

10 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

10 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 has not published any M2.5+ earthquake within 50 km in the 30 days after this event.

Regional history

Past M5+ earthquakes within 300 km

USGS lists 276 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:

  1. 7.37 km N of Gönen, TurkeyMarch 18, 1953 · 263 km E of this epicenter
  2. 7.2Aegean SeaNovember 8, 1905 · 15 km N of this epicenter
  3. 7.225 km SE of Malkara, TurkeyAugust 9, 1912 · 232 km E of this epicenter
  4. 7.261 km W of Eresós, GreeceDecember 19, 1981 · 99 km SE of this epicenter
  5. 7.29 km NNW of Karaburun, TurkeyJuly 23, 1949 · 215 km SE of this epicenter
  6. 7.19 km S of Stara Zagora, BulgariaApril 14, 1928 · 280 km N of this epicenter
  7. 7.13 km W of Brezovo, BulgariaApril 18, 1928 · 268 km N of this epicenter
  8. 7.07 km SE of Stara Kresna, BulgariaApril 4, 1904 · 228 km NW of this epicenter

History · NOAA

Deadliest earthquakes in this area

NOAA’s significant-earthquake database lists 95 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 28,686 recorded deaths. The most severe:

  1. 1883M7.3

    Ayvalik, Izmir, Cesme

    15 Oct 1883 · 233 km away · intensity X

    15,000 deathsExtreme damage ($25M+)

  2. 1881M7.3

    Khios; Turkey: Cesme

    3 Apr 1881 · 240 km away · intensity XI

    7,866 deathsExtreme damage ($25M+)tsunami

  3. 1912M7.2

    Marmara Sea

    9 Aug 1912 · 232 km away

    2,800 deathsExtreme damage ($25M+)tsunami

  4. 1953M7.3

    Yenice, Onon

    18 Mar 1953 · 263 km away

    1,070 deaths$4 million damage

  5. 1867M7.0

    Mitilini; Turkey: Izmir

    7 Mar 1867 · 179 km away

    563 deathsSevere damage ($5–24M)tsunami

  6. 1894M6.7

    Locride, Malesina-Martinon (Lokris)

    20 Apr 1894 · 192 km away · intensity X

    255 deathsSevere damage ($5–24M)

NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.

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