Wow. I hope these people are doing okay? Just in the time I was writing this post they have had more. And the area north of that in Alaska seems to be doing some shaking. Last month it was California, but those swarms dont't seem to have the same intensity as this one. I have not seen this activity in Canada for the time I have been following patterns. Maybe they have had this before. i know that area has had earthquakes, but like this, in a 12-24 hour time frame?
Originally posted by phroziac
Just foreshocks and aftershocks. That is, of course, the edge of the continental plate and ocean plate. Theyll probably have aftershocks for months. Japan is still having aftershocks from 3/11. I say theyre lucky it happened now instead of building up pressure until it could shake out a 9.0!
I do wonder if sandy has anything to do with it. Theres been a major drought all summer, and now an unseadonable huricane? Hmmmmmmmm......mightvr put interesting stresses on the plate
Isaac reached hurricane strength the morning of August 28. The storm made its first U.S. landfall at 6:45 p.m. CDT that evening (2345 UTC), near the mouth of the Mississippi River. It made a second and final landfall at 2:00 a.m. CDT (0700 UTC) the next morning at Port Fourchon, Louisiana. At least 9 fatalities have been confirmed in the United States—5 in Louisiana and two each in Mississippi and Florida.
"Obviously, all this activity is related or interconnected, but it doesn't really follow the typical main shock, aftershock activity," said Rob Graves, a seismologist with the U.S. Geological Survey.
Originally posted by Perelandra
They aftershocks seem strong but not much news coming out of there. I am not sure of the population density, will have to google that. I wonder if/how this will effect faults further down the West coast?
This earthquake, larger than the 1906 San Francisco earthquake, is Canada's largest earthquake recorded by seismometers
On August 23, a moderate tropical storm developed 200 miles (323 km) east of Sint Maarten. Operationally, the system was treated as an easterly wave until it moved through the Bahamas. It is believed that the system originated near the Cape Verde islands. On August 24, the tropical storm passed north of the Leeward Islands and San Juan, Puerto Rico, and then strengthened to a minimal hurricane with 75 mph (120 km/h) winds on August 25. Subsequently, it strengthened rapidly, and the cyclone was noted as "well developed" when it passed near Nassau with 115 mph (185 km/h) winds on the morning of August 26. At the time, it was the equivalent of a Category 3 hurricane on the Saffir-Simpson Hurricane Scale. The storm strengthened further over the Gulf Stream, and it moved ashore over the city of West Palm Beach as a strong Category 4 hurricane around 7:20 p.m
Canada's capital, Ottawa, declared this earthquake as being its most powerful in 65 years.
Alex triggered widespread power outages throughout northeastern Mexico and southern Texas. Damage was most evident in the Monterrey metropolitan area, which faced what Nuevo León governor Rodrigo Medina de la Cruz described as "the worst weather phenomenon in its history."
The geological record reveals that "great earthquakes" (those with moment magnitude 8 or higher) occur in the Cascadia subduction zone about every 500 years on average, often accompanied by tsunamis. There is evidence of at least 13 events at intervals from about 300 to 900 years with an average of 570—590 years. Previous earthquakes are estimated to have occurred in 1310 AD, 810 AD, 400 AD, 170 BC and 600 BC.
I hear ya, I dug a little more and found that the 2005 EQ swarm in Brawley came a few days after Hurricane Katrina. So hard to make a distinction.
Originally posted by gnosticagnostic
reply to post by Observationalist
well interesting... but didn't the hurricane form before the EQ? or did the EQ trigger a hurricane? egg chicken, chicken egg? lol very interesting to say the least..
As for the connection between the two, there is no reason to believe that an earthquake can cause a hurricane. There are, however, some tantalizing clues suggesting that hurricanes might contribute to earthquakes. Massive changes in atmospheric pressure, for example, are widely thought to cause slow earthquakes—weak tremors that last for hours or days rather than unleashing their full power over a few moments. At least one earth scientist believes hurricanes and typhoons can set off more destructive earthquakes as well. At the 2010 American Geophysical Union meeting, Shimon Wdowinski of the University of Miami argued that the abnormally heavy 2008 hurricane season caused enough land erosion to shift the pressure on the earth's crust, triggering the massive 2010 quake in Haiti. He pointed out that strong storm seasons also preceded large quakes in Taiwan in 1996 and 2009. At this point, however, Wdowinski's theory hasn't yet gained widespread acceptance, and most earth scientists still see no connection between hurricanes and large earthquakes. (Nor would the theory explain last week's coincidence, in which the quake came first.)