Series of earthquakes occur across Alaska, from Aleutian Islands to Anchorage region

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      While seismic activity has been active along the Alaskan archipelago over the past week, a number of earthquakes of note occurred throughout the U.S. state, including on the mainland, this weekend.

      Two light to moderate quakes hit the Fox Islands in the Aleutian Islands chain yesterday.

      The first struck at 10:07 a.m. on January 12. The U.S. Geological Survey measured it as a 4.2-magnitude quake.

      Originating at a depth of 80 kilometres (50 miles), the epicenter was 29 kilometres (17 miles) southwest of Nikolski, Alaska; and 1492 kilometres (925 miles) southwest of Anchorage, Alaska.

      A deep-earth quake followed in the same area at 4:07 p.m. local time (6:07 p.m. Vancouver time) on January 12.

      The U.S. Geological Survey reported it as 5.0-magnitude while the Alaska Earthquake Centre measured it as 4.4-magnitude.

      At a depth of 108 kilometres (67 miles), it was located 73 kilometres (45 miles) northwest of Nikolski, Alaska, and 1471 kilometres (912 miles) southwest of Anchorage.

      After that, an earthquake hit the Alaska mainland at 5:03 p.m. on January 12.

      The U.S. Geological Survey measured it as a 4.0-magnitude quake while the Alaska Earthquake Centre recorded it as 3.8-magnitude.

      The epicenter, at a depth of 17 kilometres (11 miles), was located 24 kilometres (15 miles) southwest of Glacier View, Alaska; and 114 kilometres (71 miles) northeast of Anchorage.

      U.S. Geological Survey

      Afterward, an offshore 4.2-magnitude quake hit the Gulf of Alaska at 11 p.m. on January 12 local time (12 a.m. on January 13 Vancouver time), according to the U.S. Geological Survey (which upgrade it from its initial assessment as 4.0-magnitude). The Alaska Earthquake Centre reported it as 4.0-magnitude.

      At a depth of 10 kilometres (six miles), the epicenter was located 250 kilometres (155 miles) southeast of Chniak, Alaska, and 589 kilometres (365 miles) south of Anchorage.

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