More earthquakes rumble under Northwest volcanoes – Mt. Hood shaken by quake swarm

May 2016 OREGONAs of 1 p.m. Monday, Oregon’s Mount Hood has seen about 40 earthquakes in close proximity over less than 18 hours.  Such clusters of earthquakes are known as a swarm. The location of the quakes is on the southern flank of the volcano, and they are small, magnitude 2.0 or less. Alicia Hotovec-Ellis is a volcano seismologist at the Pacific Northwest Seismic Network at the University of Washington and an expert on earthquake swarms. She says the swarms have happened in the same place before.  The quakes on Mount Hood are not seen as a warning of an eruption and are probably related to water moving through rock.
Swarms of small quakes are used as a tool by scientists to monitor what’s going on deep inside a volcano.  Mount St. Helens has seen a series of swarms involving more than 100 key quakes over the past two months, part of a larger pattern of swarm activity dating back to the late 1990s. Mount St. Helens last erupted in 2004. “The style of earthquakes and where they’re locating is consistent with what we’re calling re-charge,” said Seth Moran of the Cascades Volcano Observatory. But he hastens to add that the next eruption is likely years, if not decades, away. –King 5

Fringe Science

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8 Responses to More earthquakes rumble under Northwest volcanoes – Mt. Hood shaken by quake swarm

  1. Dennis E. says:

    Also reports that magma is moving up and is recharging Mt. Saint Helen Magma Stores, Setting Off Earthquake Swarms…. from wired


  2. chuck says:

    Years ago, I was hiking to the very peak of this mountain, when I chanced upon a fellow hiker. A small fellow of Japanese extract, his name was Boolisan, and he claimed to be the editor and publisher of a small paper called the Murietta Shimbun.

    As we hiked along through the patches of fog that early morning, Boolisan advised me that “he” was slumbering now, but would awaken one day “thirty year from this one if you are so good to count”; that was in 1986. I inquired as to his reference to a male personage, thinking this was some allusion to an earth god in a general sense; while reluctant at first, Boolisan began to tell an ancient Ainu legend of the water monitors who stand guard on the edges of their sacred pool (the pacific). These monitors are some form of lizard or turtle creature, but many, many times larger and far more developed. Indeed, they have had mixed dealing with the human species in the past, mostly with our proto culture during the times of some former Japanese nation state he titled Yanagoonya (?). In any case, these great monitor beasts would signal their stirrings by quake swarms and seemingly related large magnitude quakes on the major fault systems that surround the sacred pool, all of which was apparently forecast to occur in 2016 in a cycle called the Phusie.


  3. Dennis E. says:

    There is something weird and somehow terrifying happening right now at some of the most dangerous volcanoes in the Cascade Range in northwest United States–


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