main page projectsoperational monitoring of earthquake forerunnersstrong earthquake in japan and the aleutian islands.

Strong earthquake in Japan and the Aleutian Islands.. / June 27, 2011 /

The final seismic event in the May-June experiment was a strong earthquake occurred on June 22 at the east of Honshu with a magnitude of 6.7. The earthquake was launched along the seismomagnetic start-up meridian of (-23/157) degrees as a result of a geomagnetic storm of May 28-29 with a delay of 2 days with respect to three weeks harmonic. Cloud indicators of this event were detected on satellite images of June 11 (Appendix 1) and June 22 in the time-frame of 09:00–12:00. Cloud indicator (A) of June 11 gave the potential magnitude estimate of M = ln700 ~ 6,6 ± 0,2. The actual magnitude was 6.7.

Thus, the final result of the first phase of the experiment is the following: 16 earthquakes with a magnitudes of 6.0-6.8 occurred along five of total seven declared seismomagnetic belts in the predicted time-intervals. There were no other events with large magnitudes for the evaluated time period.

In the message dated by June 20 it was presented a series of seismomagnetic start-up meridians (and corresponding belts) of the potential events. Powerful earthquakes of June 24 (Aleutian Islands with M7.2 and Santa Cruz Islands with the M6.2) were launched along the following meridians:
June 4 — (164/-16) — June 18 or June 26 ± 2 days,
June 7 — (167/-13) — June 21 or June 28 ± 2 days.

These evens are the first warning signal of a possible strong events in the Kuril-Kamchatkan (Okhotsk Sea) zone. The forecast map of the potential earthquakes chains is presented in the Appendix 2.

Appendix 1 (pdf, 370 Kb)

Appendix 2 (pdf, 380 Kb)

Print version