Macroscope
RU
Loading findings…

  1. Nature

    A magnitude 7.7 earthquake struck 675 km down

    19 August 20026756 September 201867130 May 2015664

    It struck on 19 August 2002, south of the Fiji Islands. This is the depth of the source, not of the damage.

    Source: USGS ComCat: events and estimatesOpen on the chart →
    More

    Strong catalogue earthquakes can originate very far below the surface. High magnitude does not necessarily imply a shallow source.

    Bars share one scale. The source values and their units are listed below.

    • Hypocentre depth km

      675.4 (2002-08-19T11:08:24.310Z)

      USGS ComCat

    • Event magnitude magnitude (mwc)

      7.7 (2002-08-19T11:08:24.310Z)

      USGS ComCat

    USGS ComCat: published earthquake-type events, M≥7, from 1900-01-01 through 2026-10-01. Magnitude type, date, network and errors retained. Historical completeness varies; the catalogue does not measure damage or deaths. Select the three greatest reported depths among M≥7 events in 1970–2025. Depth is estimated; the topic uses selected records, not a random earthquake sample.

    USGS ComCat earthquake-type events with published magnitude ≥7, 1900-01-01 ≤ date ≤ 2026-10-01. Preferred catalogue magnitude, with scale type retained. Hypocentre depth, not damage depth; reported errors are preserved. Historical completeness, accuracy and networks vary. The catalogue does not prove an increase in true event incidence or damage; counts refer to the stated filter. The logarithmic 10^(1.5ΔM) relation is an approximate educational energy ratio, not measured energy per event, local shaking or mortality.

    A question for this picture

    Which measure would change this story?

More findings

All findings →