The mainshock had the depth of 15 km and then the depth reduced with time from 11-12 km for the first two strong aftershocks
until the last strong aftershock
was at a depth of 2 km.
Nearly 12 hours after the quake, a sharp aftershock
alarmed the residents of Sant'Agostino di Ferrara and knocked off a segment of the city hall's wall.
Authorities said that parts of Christchurch will have to be abandoned due to the extent of the damage caused by the aftershocks
JAPAN has been rattled by a strong aftershock
and tsunami warning, nearly a month after a devastating earthquake and tsunami flattened the north-eastern coast.
Summary: TOKYO: A major aftershock
rocked northeast Japan Thursday and a tsunami warning was issued for the coast devastated by last month's massive quake and tsunami that crippled a nuclear power plant.
In fact, the country was hit by more than a dozen significant aftershocks
- three over magnitude-6 and six above magnitude-5 andndash; on Thursday, demonstrating the challenges that face Pinera.
Quake expert He Yongnian said: "Judging from previous earthquakes of a similar magnitude, this time the aftershocks
may last for two or three months.
shook Pakistan today, rattling the nerves of those who lived through last weekend's devastating earthquake and bringing an even greater sense of urgency to efforts to find survivors under the precarious rubble.
If the maps showed a high risk of aftershocks
along major fault lines or highly populated areas, emergency officials could ready responders or plan evacuations.
There were no immediate reports of damage or casualties from the aftershock
, the strongest since last Sunday's magnitude 9.
A few hours after waiting through subsequent aftershocks
, we helped hand out emergency blankets to our fellow evacuees.
rocked north-western Japan today, as tens of thousands of people huddled in evacuation centres following a devastating weekend earthquake.