QuakeScout
Magnitude4.1

Reviewed by USGSIndonesia20y ago

M4.1 earthquake 285 km S of Banjar, Indonesia

Saturday, September 2, 2006, 02:19:29 UTC · 9.759°S, 107.101°E

A magnitude 4.1 earthquake struck 285 km S of Banjar, Indonesia on Saturday, September 2, 2006, 02:19:29 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 earthquakeDashed circle: 50 km aftershock search area

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

2 km

from the nearest mapped plate boundary, between the Sunda 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 lists 2 M2.5+ earthquakes within 50 km in the following 30 days; the largest was M5.9 on September 19, 2006. Most nearby activity right after a large earthquake is aftershocks, which usually become less frequent over days and weeks.

M3M4M5M61h6h1d3d7d14d30dMainshock M4.1
Time after the mainshock on a logarithmic scale (first hours stretched), magnitude on the vertical axis. M2.5+ events from USGS.
  1. 5.9294 km SSW of Singaparna, Indonesia20y ago · 31 km SE of this epicenter
  2. 3.8259 km S of Banjar, Indonesia20y ago · 27 km N of this epicenter

Regional history

Past M5+ earthquakes within 300 km

USGS lists 257 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:

  1. 7.7226 km SSW of Singaparna, IndonesiaJuly 17, 2006 · 63 km NE of this epicenter
  2. 6.9south of Java, IndonesiaJuly 24, 1979 · 168 km SE of this epicenter
  3. 6.5260 km SSW of Kroya, IndonesiaSeptember 7, 1974 · 138 km E of this epicenter
  4. 6.3136 km S of Kawalu, IndonesiaSeptember 14, 1944 · 165 km NE of this epicenter
  5. 6.3157 km WSW of Pelabuhanratu, IndonesiaJanuary 18, 1931 · 295 km NW of this epicenter
  6. 6.3south of Java, IndonesiaMarch 21, 1940 · 84 km SE of this epicenter
  7. 6.2187 km S of Banjar, IndonesiaMay 12, 1957 · 101 km N of this epicenter

History · NOAA

Deadliest earthquakes in this area

NOAA’s significant-earthquake database lists 5 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 832 recorded deaths. The most severe:

  1. 2006M7.7

    Java

    17 Jul 2006 · 63 km away

    802 deaths$55 million damagetsunami

  2. 1979M6.1

    Java

    2 Nov 1979 · 266 km away

    30 deaths$16 million damage

  3. 1980M5.8

    Java: Tasikmalaja

    16 Apr 1980 · 263 km away

    Moderate damage ($1–5M)

  4. 1903M8.1

    S Of Java

    27 Feb 1903 · 230 km away

  5. 1957

    S. Java Sea

    26 Sep 1957 · 175 km away

    tsunami

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

Nearby trackers

Closest city pages