Reviewed by USGSBolivia21y ago
M4.0 earthquake 164 km WSW of Colchani, Bolivia
Sunday, July 10, 2005, 11:29:04 UTC · 20.982°S, 68.334°W
A magnitude 4.0 earthquake struck 164 km WSW of Colchani, Bolivia on Sunday, July 10, 2005, 11:29:04 UTC, at a depth of 118.4 km (intermediate).
- Magnitude
- 4.0
- Light · mb
- Depth
- 118 km
- Intermediate
- 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
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
57 km
from the nearest mapped plate boundary, between the Altiplano and South American plates. Earthquakes cluster along boundaries like this one, where plates collide, pull apart or slide past each other.
Depth: intermediate
118 km
Intermediate-depth earthquakes usually break inside a plate that is sinking into the mantle. Shaking spreads over a wide area but is gentler at the epicenter than a shallow quake of the same size.
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 526 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 7.8102 km ENE of Iquique, ChileJune 13, 2005 · 143 km NW of this epicenter
- 7.751 km W of Atocha, BoliviaNovember 29, 1957 · 168 km E of this epicenter
- 7.3136 km WSW of Challapata, BoliviaJune 6, 1915 · 197 km N of this epicenter
- 7.334 km NE of Tocopilla, ChileDecember 21, 1967 · 195 km SW of this epicenter
- 7.334 km S of Iquique, ChileFebruary 23, 1933 · 200 km W of this epicenter
- 7.2Near the coast of Tarapaca, ChileOctober 4, 1940 · 245 km NW of this epicenter
- 7.278 km SW of Colchani, BoliviaOctober 4, 1910 · 88 km E of this epicenter
- 7.268 km SSE of Arica, ChileAugust 8, 1987 · 278 km NW of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 41 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 2,408 recorded deaths. The most severe:
- 1877M8.3
Off North Coast
10 May 1877 · 232 km away · intensity XI
2,385 deaths$2 million damagetsunami
- 2005M7.7
Tarapaca
13 Jun 2005 · 143 km away
11 deaths$5 million damage
- 1987M6.9
Arica, Iquique
8 Aug 1987 · 278 km away · intensity VII
5 deaths$1 million damage
- 1953M7.4
Northern
7 Dec 1953 · 130 km away
3 deaths$7 million damage
- 1967M7.5
Northern
21 Dec 1967 · 145 km away
1 deathModerate damage ($1–5M)tsunami
- 1976M7.3
Pozo Almonte, Oficina Victoria, Arica
30 Nov 1976 · 80 km away · intensity VIII
1 deathModerate damage ($1–5M)
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.