QuakeScout
Magnitude3.6

Reviewed by USGSPeru24y ago

M3.6 earthquake 19 km SSE of Quilca, Peru

Sunday, February 17, 2002, 07:30:03 UTC · 16.872°S, 72.352°W

A magnitude 3.6 earthquake struck 19 km SSE of Quilca, Peru on Sunday, February 17, 2002, 07:30:03 UTC, at a depth of 86.6 km (intermediate).

Magnitude
3.6
Minor · mb
Depth
87 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

4 tons of TNT

That is about 1/3,975 of the Hiroshima bomb. A magnitude 5.0 releases about 126 times more energy.

Tectonic setting

146 km

from the nearest mapped plate boundary, between the Nazca and Altiplano plates. Earthquakes this far from a boundary happen on faults inside a plate, often less frequently but sometimes strongly.

Depth: intermediate

87 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 328 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:

  1. 8.46 km SSW of Atico, PeruJune 23, 2001 · 153 km NW of this epicenter
  2. 7.737 km SSW of Atico, PeruAugust 6, 1913 · 152 km W of this epicenter
  3. 7.651 km SW of Punta de Bombón, PeruJuly 7, 2001 · 80 km S of this epicenter
  4. 7.235 km N of El Cardo, PeruOctober 11, 1922 · 75 km NW of this epicenter
  5. 7.212 km NNE of Cono Norte, PeruFebruary 26, 1914 · 113 km NE of this epicenter
  6. 7.130 km SW of Islay (Matarani), PeruApril 12, 1988 · 36 km S of this epicenter
  7. 7.021 km SW of Santa Rita de Siguas, PeruJanuary 15, 1958 · 30 km NE of this epicenter
  8. 6.925 km ENE of Arica, ChileAugust 30, 1906 · 291 km SE 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 26,592 recorded deaths. The most severe:

  1. 1868M8.5

    Arica

    13 Aug 1868 · 240 km away · intensity XI

    25,000 deaths$300 million damagetsunami

  2. 1833M7.7

    Peru: Tacna; Chile: Arica

    18 Sep 1833 · 209 km away · intensity VIII

    700 deathsSevere damage ($5–24M)tsunami

  3. 1784M8.0

    Arequipa,Camana,Moquegua,Tambo

    13 May 1784 · 56 km away · intensity X

    383 deathsSevere damage ($5–24M)tsunami

  4. 1821

    Camana, Ocona, Caraveli

    10 Jul 1821 · 107 km away · intensity VIII

    162 deathsSevere damage ($5–24M)

  5. 2001M8.4

    Arequipa, Moquegua, Tacna, Ayacucho

    23 Jun 2001 · 153 km away · intensity VIII

    103 deaths$200 million damagetsunami

  6. 1991M4.7

    Maca, Chivay, Yanque

    23 Jul 1991 · 157 km away · intensity V

    92 deathsModerate damage ($1–5M)

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

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