QuakeScout
Magnitude4.0

Reviewed by USGSTimor Leste20y ago

M4.0 earthquake 185 km NNE of Lospalos, Timor Leste

Monday, February 6, 2006, 00:51:53 UTC · 6.885°S, 127.381°E

A magnitude 4.0 earthquake struck 185 km NNE of Lospalos, Timor Leste on Monday, February 6, 2006, 00:51:53 UTC, at a depth of 410.4 km (deep).

Magnitude
4.0
Light · mb
Depth
410 km
Deep
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

15 tons of TNT

That is about 1/998 of the Hiroshima bomb. A magnitude 5.0 releases about 32 times more energy.

Tectonic setting

31 km

from the nearest mapped plate boundary, between the Banda Sea and Timor plates. Earthquakes cluster along boundaries like this one, where plates collide, pull apart or slide past each other.

Depth: deep

410 km

Deep earthquakes (over 300 km) happen deep inside subducting plates. They rarely cause damage, but can be felt faintly over very large distances.

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 2 M2.5+ earthquakes within 50 km in the following 30 days; the largest was M5.5 on February 8, 2006. Most nearby activity right after a large earthquake is aftershocks, which usually become less frequent over days and weeks.

M3M4M51h6h1d3d7d14d30dMainshock M4.0
Time after the mainshock on a logarithmic scale (first hours stretched), magnitude on the vertical axis. M2.5+ events from USGS.
  1. 4.1171 km NNE of Lospalos, Timor Leste20y ago · 45 km SE of this epicenter
  2. 5.5172 km NNE of Lospalos, Timor Leste20y ago · 49 km SE of this epicenter

Regional history

Past M5+ earthquakes within 300 km

USGS lists 841 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:

  1. 8.11963 Banda Sea EarthquakeNovember 4, 1963 · 246 km E of this epicenter
  2. 7.7Banda SeaNovember 2, 1950 · 199 km E of this epicenter
  3. 7.6196 km S of Ambon, IndonesiaJanuary 27, 2006 · 178 km NE of this epicenter
  4. 7.3145 km NNE of Lospalos, Timor LesteAugust 30, 1917 · 59 km SE of this epicenter
  5. 7.3172 km NE of Lospalos, Timor LesteNovember 24, 1983 · 109 km SE of this epicenter
  6. 7.2187 km N of Baukau, Timor LesteFebruary 11, 1969 · 89 km W of this epicenter
  7. 7.258 km ENE of Lospalos, Timor LesteSeptember 29, 1905 · 155 km S of this epicenter
  8. 7.1196 km SSE of Ambon, IndonesiaJuly 4, 1914 · 270 km NE of this epicenter

History · NOAA

Deadliest earthquakes in this area

NOAA’s significant-earthquake database lists 6 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700. The most severe:

  1. 1989M6.2

    Timor: Alor

    14 Jul 1989 · 282 km away

    Moderate damage ($1–5M)

  2. 1963M8.3

    Banda Sea

    4 Nov 1963 · 243 km away

    Limited damage (under $1M)

  3. 1918M8.1

    Banda Sea

    18 Nov 1918 · 179 km away

  4. 1950M8.1

    Banda Sea

    2 Nov 1950 · 238 km away

  5. 1917M7.8

    Banda Sea

    30 Aug 1917 · 97 km away

  6. 2006M7.6

    Banda Sea

    27 Jan 2006 · 178 km away

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

Nearby trackers

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