What caused the Haida Gwaii earthquake?
This was the second largest Canadian earthquake ever recorded by a seismometer, after the 1949 Queen Charlotte Islands earthquake, about 135 kilometres (84 mi) away. One person died due to a car crash related to the tsunami in Oahu, Hawaii….2012 Haida Gwaii earthquake.
| UTC time | 2012-10-28 03:04:09 |
|---|---|
| Casualties | 1 dead (indirect) |
How large was the earthquake that occurred off the coast of BC in October of 2012?
magnitude 7.7
A powerful magnitude 7.7 earthquake struck central Moresby Island in the Haida Gwaii archipelago at 8:04PM PDT, 27 October 2012. Residents along the west coast—from Alaska to Vancouver—also felt several aftershocks up to magnitude 5.8.
Where is Queen Charlotte fault located?
British Columbia
The Queen Charlotte Fault (QCFZ) extends for over 350 km along the western margin of British Columbia offshore of the Haida Gwaii (Queen Charlotte Islands) archipelago (Fig. 1).
Where in Canada is there a high tsunami threat Why is it high in that location?
The coast of British Columbia is at the highest risk of tsunamis in Canada but tsunamis can occur on any coastal area. People on the beach or in low coastal areas need to be aware that a tsunami could arrive within minutes after a severe earthquake.
How was the Queen Charlotte fault made?
Through geologic time, a change in pacific plate motion beginning as recently as approximately 6 Ma or as early as approximately 12 Ma caused an increase in convergence along the entire length of the fault and initiated underthrusting along the southern segment where convergence is highest, a process that ultimately …
What was the size of the 2012 Haida Gwaii earthquake?
The 2012 Haida Gwaii earthquake occurred just after 8:04 p.m. PDT on October 27. The shock had a moment magnitude of 7.8 and a maximum Mercalli Intensity of V ( Moderate ). The earthquake’s epicentre was on Moresby Island of the Haida Gwaii archipelago (formerly known as the Queen Charlotte Islands).
What is the second largest earthquake in Canada?
The earthquake’s epicentre was on Moresby Island of the Haida Gwaii archipelago (formerly known as the Queen Charlotte Islands). This was the second largest Canadian earthquake ever recorded by a seismometer, after the 1949 Queen Charlotte Islands earthquake, about 135 kilometres (84 mi) away.
What was the size of the aftershock from the Chile earthquake?
The largest of these numerous aftershocks was a 6.3 magnitude earthquake that occurred 56 kilometres (35 mi) to the west of the main tremor on the morning of October 28. This was followed on October 29 by a 6.2 aftershock 50 kilometres (31 mi) to the south of the original quake.
What is the largest tsunami wave ever recorded in Hawaii?
The maximum wave height recorded at tide gauges in Hawaii was 79 cm (31 in). Other warnings were issued for the states of Oregon and California, but were subsequently lifted. Along the western coast of Haida Gwaii, the earthquake triggered tsunami waves with a maximum run-up height at 13 meters in Davidson Inlet.