Tag Archives: tsunami
6.5 Earthquake Aleutian Islands, Alaska
A Large 6.5 quake shook near Aleutian Islands today Sept 3rd, 2013
No Tsunami warning.
The Aleutian arc extends approximately 3,000 km from the Gulf of Alaska in the east to the Kamchatka Peninsula in the west. It marks the region where the Pacific plate subducts into the mantle beneath the North America plate. This subduction is responsible for the generation of the Aleutian Islands and the deep offshore Aleutian Trench.
NOAA Bouy has only minor deviation.
Station 21414 (LLNR 984.8) – AMCHITKA – 170 NM South of Amchitka, AK
A M5.9 hit 188kn SW Bella Bella, Canada with a few M5.0 aftershocks.
The September 3, 2013 earthquake occurred as the result of strike-slip faulting in the boundary region between the Pacific plate, the North American plate, and the Juan de Fuca plate (or the Explorer subplate of the Juan de Fuca plate). The epicenter is situated south of Haida Gwaii, also known as the Queen Charlotte Islands, off the west coast of British Columbia.
M6.5 hit Tzu Island Japan
The Philippine Sea plate is bordered by the larger Pacific and Eurasia plates and the smaller Sunda plate. The Philippine Sea plate is unusual in that its borders are nearly all zones of plate convergence. The Pacific plate is subducted into the mantle, south of Japan, beneath the Izu-Bonin and Mariana island arcs, which extend more than 3,000 km along the eastern margin of the Philippine Sea plate.