Medical Definition of leach. 1  1: to subject to the action of percolating liquid (as water) in order to separate the soluble components. 2  2: to dissolve out by the action of a percolating liquid. 3  intransitive verb.
The Pacific Plate is moving northwestwardly under the North American Plate at a rate of approximately 2.5 inches per year, resulting in many fault lines. Earthquakes are very common and there are an average of 50-100 earthquakes throughout Alaska--daily! In fact, Alaska has more earthquakes per year than all other U.S. states combined! The picture above, taken in Portage, Alaska near Anchorage, is one of the many remnants of the famous 1964 Great Alaskan Earthquake. The magnitude 9.2 quake which shook South-Central Alaska on March 27, 1964 at 5:36 p.m. Alaska Standard Time, lasted for over four minutes and was felt around the world.
Earthquake Risk in Alaska. Scientists have long recognized that Alaska has more earthquakes than any other region of the United States and is, in fact, one of the most seismically active areas of the world. The second largest earthquake ever recorded shook the heart of southern Alaska on March 27th, 1964, with a magnitude of 9.2 (see photos below).