Reviewed by USGSIndonesia20y ago
M4.2 earthquake 62 km SSE of Sinabang, Indonesia
Tuesday, March 7, 2006, 00:11:18 UTC · 1.987°N, 96.647°E
A magnitude 4.2 earthquake struck 62 km SSE of Sinabang, Indonesia on Tuesday, March 7, 2006, 00:11:18 UTC, at a depth of 30.0 km (shallow).
- Magnitude
- 4.2
- Light · mb
- Depth
- 30 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
30 tons of TNT
That is about 1/500 of the Hiroshima bomb. A magnitude 5.0 releases about 16 times more energy.
Tectonic setting
13 km
from the nearest mapped plate boundary, between the Sunda and Burma plates. Earthquakes cluster along boundaries like this one, where plates collide, pull apart or slide past each other.
Depth: shallow
30 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 M4.7 on March 20, 2006. Most nearby activity right after a large earthquake is aftershocks, which usually become less frequent over days and weeks.
- 3.959 km S of Sinabang, Indonesia20y ago · 26 km W of this epicenter
- 4.6Simeulue, Indonesia20y ago · 35 km NW of this epicenter
- 4.563 km SE of Sinabang, Indonesia20y ago · 27 km NE of this epicenter
- 4.750 km S of Sinabang, Indonesia20y ago · 31 km W of this epicenter
- 4.748 km SE of Sinabang, Indonesia20y ago · 20 km N of this epicenter
Regional history
Past M5+ earthquakes within 300 km
USGS lists 473 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 9.12004 Sumatra - Andaman Islands EarthquakeDecember 26, 2004 · 163 km NW of this epicenter
- 8.678 km WSW of Singkil, IndonesiaMarch 28, 2005 · 52 km E of this epicenter
- 8.2The 1907 Sumatra Earthquake and TsunamiJanuary 4, 1907 · 146 km NW of this epicenter
- 7.5209 km WSW of Sinabang, IndonesiaNovember 21, 1969 · 234 km W of this epicenter
- 7.450 km NW of Sinabang, IndonesiaNovember 2, 2002 · 112 km NW of this epicenter
- 7.1190 km SSW of Sibolga, IndonesiaNovember 17, 1984 · 251 km SE of this epicenter
- 7.186 km WSW of Pangkalan Brandan, IndonesiaSeptember 19, 1936 · 215 km NE of this epicenter
- 7.040 km NE of Meulaboh, IndonesiaAugust 3, 1935 · 268 km N of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 20 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 232,379 recorded deaths. The most severe:
- 2004M9.1
Sumatra: Aceh: Off West Coast
26 Dec 2004 · 163 km away
227,899 deaths$10 billion damagetsunami
- 1907M8.2
Nw Sumatra: Gunungsitoli, Barus
4 Jan 1907 · 146 km away
2,188 deathsSevere damage ($5–24M)tsunami
- 2005M8.6
Sumatera: Sw
28 Mar 2005 · 52 km away
1,319 deaths$37 million damagetsunami
- 1861M7.0
Sw. Sumatra
9 Mar 1861 · 266 km away
950 deathsSevere damage ($5–24M)tsunami
- 1936
N Sumatera: Tapanuli, Karo
9 Sep 1936 · 193 km away · intensity VIII
17 deathsModerate damage ($1–5M)
- 2002M7.3
Sumatera: Simeulue
2 Nov 2002 · 112 km away
3 deathsSevere damage ($5–24M)
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.