Reviewed by USGSSolomon Islands13y ago
M4.1 earthquake 129 km SE of Kirakira, Solomon Islands
Tuesday, March 26, 2013, 10:38:24 UTC · 11.271°S, 162.766°E
A magnitude 4.1 earthquake struck 129 km SE of Kirakira, Solomon Islands on Tuesday, March 26, 2013, 10:38:24 UTC, at a depth of 10.0 km (shallow).
- Magnitude
- 4.1
- Light · 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
21 tons of TNT
That is about 1/707 of the Hiroshima bomb. A magnitude 5.0 releases about 22 times more energy.
Tectonic setting
10 km
from the nearest mapped plate boundary, between the Pacific and Australian 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 911 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 8.02013 Santa Cruz Islands EarthquakeFebruary 6, 2013 · 262 km E of this epicenter
- 7.8116 km NW of Kirakira, Solomon IslandsOctober 10, 1931 · 246 km NW of this epicenter
- 7.8108 km SW of Kirakira, Solomon IslandsOctober 3, 1931 · 172 km W of this epicenter
- 7.656 km W of Kirakira, Solomon IslandsDecember 15, 1935 · 179 km NW of this epicenter
- 7.6121 km W of Kirakira, Solomon IslandsAugust 10, 1988 · 235 km NW of this epicenter
- 7.685 km SE of Honiara, Solomon IslandsFebruary 7, 1984 · 287 km NW of this epicenter
- 7.5105 km ESE of Honiara, Solomon IslandsApril 20, 1977 · 265 km NW of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 18 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 79 recorded deaths. The most severe:
- 1931M7.8
San Cristobal Island
3 Oct 1931 · 195 km away
50 deathsSevere damage ($5–24M)tsunami
- 1977M8.1
Solomon Islands
21 Apr 1977 · 266 km away · intensity VII
18 deathsSevere damage ($5–24M)tsunami
- 2013M7.9
Santa Cruz Islands
6 Feb 2013 · 262 km away · intensity VIII
10 deaths$36 million damagetsunami
- 1988M7.6
San Cristobal, Guadalcanal
10 Aug 1988 · 233 km away
1 deathLimited damage (under $1M)tsunami
- 1984M7.5
Guadalcanal
7 Feb 1984 · 287 km away · intensity VI
Moderate damage ($1–5M)
- 1977M7.5
Solomon Islands
20 Apr 1977 · 265 km away
Limited damage (under $1M)
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.