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    The Earthquake/Seismic Activity Log #2

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    Carol
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    Re: The Earthquake/Seismic Activity Log #2

    Post  Carol on Tue Jan 10, 2017 10:11 am


    Huge earthquake hits Philippines
    A 7.3 magnitude undersea earthquake, measuring 617 km, struck southeast Philippines on Tuesday. The quake comes five days after a smaller tremor in the same area.

    Photo by: Google MapsPhoto by: Google Maps
    An earthquake with a magnitude of 7.3 that struck under the Celebes Sea off the southern Philippines was far too deep to cause any damage or to generate a tsunami according to seismologists.

    Is it dangerous?

    The US Tsunami Warning Centre has issued no warning, advisory, watch or threat after the quake in the Celebes Sea, which lies in the western Pacific between Sulawesi and the Philippines.

    Seismologists said it was too deep to cause any damage and casualties or a tsunami. The Philippines Institute of Volcanology and Seismology (Phivolcs) has, however, warned of aftershocks.

    What caused the earthquake?

    Renato Solidum of Phivolcs said the quake was set off by the movement of oceanic plates 625 kilometers (387 miles) under the seabed. Solidum said the undersea quake was centered 223 kilometers (138 miles) southeast of Sulu province.


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    mudra

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    Re: The Earthquake/Seismic Activity Log #2

    Post  mudra on Tue Jan 10, 2017 3:23 pm

    Deepest Quake in Recorded History has Struck/Magma Layer

    https://www.youtube.com/watch?v=CjFPxiqHvi4


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    Re: The Earthquake/Seismic Activity Log #2

    Post  mudra on Tue Jan 10, 2017 3:41 pm

    1/10/2017 -- Large EQ potential -- M7.3 deep earthquake in West Pacific = M8.3 to M9.3 possible

    https://www.youtube.com/watch?v=EviSzJeMM7I


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    Carol
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    Re: The Earthquake/Seismic Activity Log #2

    Post  Carol on Fri Apr 28, 2017 4:19 pm

    A major earthquake measuring 7.2 struck off the coast of the island of Mindanao in the Philippines on Friday, raising the risk of tsunami waves as far away as Indonesia, the Pacific Tsunami Warning Center said.

    Hazardous waves could spread 300km (190 miles) away from the epicentre, which was in the sea south of the city of General Santos, the Center added.

    The U.S Geological Survey later downgraded the quake to 6.8.


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    It is the flash of a firefly in the night, the breath of a buffalo in the wintertime. It is the little shadow which runs across the grass and loses itself in the sunset.

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    Re: The Earthquake/Seismic Activity Log #2

    Post  Carol on Thu Jul 06, 2017 10:01 am


    Earthquake, aftershocks rattle western Montana
    MAP: https://earthquake.usgs.gov/earthquakes/eventpage/us10009757#map

    http://missoulian.com/news/state-and-regional/magnitude-earthquake-rattles-western-montana/article_bf149168-f4ab-582b-b28d-3acf96af8400.html
    Jul 06, 2017 07:41 AM MDT

    MISSOULA, Mont. - A 5.8 magnitude earthquake struck western Montana around 12:30 a.m. Thursday.  The National Weather Service in Great Falls said on Twitter that the shaking was felt as far away as 500 miles (805 kilometers).

    The U.S. Geological Survey says the the 5.8 magnitude earthquake hit just after midnight about 6 miles (9.7 kilometers) southeast of Lincoln.


    USGS also reports seven aftershocks all centered in the Lincoln area:
    Time Magnitude
    7:15 a.m. 3.6
    5:46 a.m. 2.5
    4:54 a.m. 2.9
    4:44 a.m. 3.4
    4:04 a.m. 2.9
    1:31 a.m 3.9
    1:27 a.m. 4.4
    1:11 a.m. 3.5
    1:08 a.m. 3.9
    1:02 a.m. 4.5
    12:59 a.m. 3.8
    12:54 a.m. 3.5
    12:48 a.m. 3.1
    12:35 a.m. 4.9

    The Lewis and Clark Sheriff's Office is reporting that power in Lincoln has been restored and there have been no reports of injury or damage in the area.

    Viewers around western Montana, including Missoula, Butte, Bozeman, Gardiner, Kalispell Columbia Falls, Hamilton and as far as Spokane, Washington, and Stirling, Alberta, Canada, tell us they felt the quake.

    We have received more than a thousand comments from viewers on our social media pages.

    A 76-year-old resident of Helena, which is about 34 miles away from the quake's epicenter, said it was the strongest seismic activity that he had ever felt. Ray Anderson said his wife told him the temblor woke up the dogs.

    Click here to learn how to stay prepared for an earthquake.

    The following earthquakes are the three of Montana's largest earthquakes in the last century.

    In August of 1959, a 7.5 quake killed 29 people and did $11 million worth of damage and became the largest earthquake to ever hit Montana.

    In 1935, a series of several hundred quakes hit Helena. The state reports that quake damaged more than half of Helena's buildings.

    In 2005, a 5.6 quake rattled Dillon and damages part of the old main hall at the Universtiy of Montana Western.

    The following is from the U.S. Geological Survey information on earthquakes.

    Events with magnitudes greater than 4.5 are strong enough to be recorded by a seismograph anywhere in the world, so long as its sensors are not located in the earthquake's shadow.

    The following describes the typical effects of earthquakes of various magnitudes near the epicenter. The values are typical only. They should be taken with extreme caution, since intensity and thus ground effects depend not only on the magnitude, but also on the distance to the epicenter, the depth of an earthquake's focus beneath the epicenter, the location of the epicenter and geological conditions (certain terrains can amplify seismic signals).

    Earthquake, aftershocks rattle western Montana KECI Staff The Associated Press Posted: Jul 06, 2017 12:52 AM MDT Updated: Jul 06, 2017 07:41 AM MDT Earthquake, aftershocks rattle western Montana MISSOULA, Mont. -

    A 5.8 magnitude earthquake struck western Montana around 12:30 a.m. Thursday.

    The National Weather Service in Great Falls said on Twitter that the shaking was felt as far away as 500 miles (805 kilometers).

    The U.S. Geological Survey says the the 5.8 magnitude earthquake hit just after midnight about 6 miles (9.7 kilometers) southeast of Lincoln.

    Here is the seismograph from the Black Hills, South Dakota seismic station. photo USGS also reports seven aftershocks all centered in the Lincoln area:

    Time Magnitude
    7:15 a.m. 3.6
    5:46 a.m. 2.5
    4:54 a.m. 2.9
    4:44 a.m. 3.4
    4:04 a.m. 2.9
    1:31 a.m 3.9
    1:27 a.m. 4.4
    1:11 a.m. 3.5
    1:08 a.m. 3.9
    1:02 a.m. 4.5
    12:59 a.m. 3.8
    12:54 a.m. 3.5
    12:48 a.m. 3.1
    12:35 a.m. 4.9

    The Lewis and Clark Sheriff's Office is reporting that power in Lincoln has been restored and there have been no reports of injury or damage in the area. Viewers around western Montana, including Missoula, Butte, Bozeman, Gardiner, Kalispell Columbia Falls, Hamilton and as far as Spokane, Washington, and Stirling, Alberta, Canada, tell us they felt the quake.

    We have received more than a thousand comments from viewers on our social media pages. A 76-year-old resident of Helena, which is about 34 miles away from the quake's epicenter, said it was the strongest seismic activity that he had ever felt. Ray Anderson said his wife told him the temblor woke up the dogs.

    Click here to learn how to stay prepared for an earthquake.
    http://dphhs.mt.gov/publichealth/PHEP/YourPreparedness/BeInformed/Earthquake

    The following earthquakes are the three of Montana's largest earthquakes in the last century.

    In August of 1959, a 7.5 quake killed 29 people and did $11 million worth of damage and became the largest earthquake to ever hit Montana.

    In 1935, a series of several hundred quakes hit Helena. The state reports that quake damaged more than half of Helena's buildings.

    In 2005, a 5.6 quake rattled Dillon and damages part of the old main hall at the Universtiy of Montana Western.

    The following is from the U.S. Geological Survey information on earthquakes. Events with magnitudes greater than 4.5 are strong enough to be recorded by a seismograph anywhere in the world, so long as its sensors are not located in the earthquake's shadow.

    The following describes the typical effects of earthquakes of various magnitudes near the epicenter. The values are typical only. They should be taken with extreme caution, since intensity and thus ground effects depend not only on the magnitude, but also on the distance to the epicenter, the depth of an earthquake's focus beneath the epicenter, the location of the epicenter and geological conditions (certain terrains can amplify seismic signals). Magnitude Description Mercalli intensity Average earthquake effects Average frequency of occurrence (estimated)

    1.0–1.9 Micro I Microearthquakes, not felt, or felt rarely. Recorded by seismographs. Continual/several million per year

    2.0–2.9 Minor I to II Felt slightly by some people. No damage to buildings. Over one million per year

    3.0–3.9 III to IV Often felt by people, but very rarely causes damage. Shaking of indoor objects can be noticeable. Over 100,000 per year

    4.0–4.9 Light IV to VI Noticeable shaking of indoor objects and rattling noises. Felt by most people in the affected area. Slightly felt outside. Generally causes none to minimal damage. Moderate to significant damage very unlikely. Some objects may fall off shelves or be knocked over. 10,000 to 15,000 per year

    5.0–5.9 Moderate VI to VII Can cause damage of varying severity to poorly constructed buildings. At most, none to slight damage to all other buildings. Felt by everyone. 1,000 to 1,500 per year

    6.0–6.9 Strong VIII to X Damage to a moderate number of well-built structures in populated areas. Earthquake-resistant structures survive with slight to moderate damage. Poorly designed structures receive moderate to severe damage. Felt in wider areas; up to hundreds of miles/kilometers from the epicenter. Strong to violent shaking in epicentral area. 100 to 150 per year

    7.0–7.9 Major X or greater Causes damage to most buildings, some to partially or completely collapse or receive severe damage. Well-designed structures are likely to receive damage. Felt across great distances with major damage mostly limited to 250 km from epicenter. 10 to 20 per year

    8.0–8.9 Great Major damage to buildings, structures likely to be destroyed. Will cause moderate to heavy damage to sturdy or earthquake-resistant buildings. Damaging in large areas. Felt in extremely large regions. One per year

    9.0 and greater At or near total destruction – severe damage or collapse to all buildings. Heavy damage and shaking extends to distant locations. Permanent changes in ground topography. One per 10 to 50 years Based on U.S. Geological Survey documents.


    _________________
    What is life?
    It is the flash of a firefly in the night, the breath of a buffalo in the wintertime. It is the little shadow which runs across the grass and loses itself in the sunset.

    With deepest respect ~ Aloha & Mahalo, Carol
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    Carol
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    Re: The Earthquake/Seismic Activity Log #2

    Post  Carol on Thu Jul 06, 2017 12:53 pm


    7/06/2017 -- Largest in years -- M5.8 (M6.0) Earthquake strikes in Montana near Yellowstone
    on the northwest edge.



    7/06/2017 -- Very large M6.9 (M7.0) earthquake strikes Philippines West Pacific


    Yellowstone: 5.8 in Lincoln MT

    http://feed.matthewkeys.net/quakes/


    _________________
    What is life?
    It is the flash of a firefly in the night, the breath of a buffalo in the wintertime. It is the little shadow which runs across the grass and loses itself in the sunset.

    With deepest respect ~ Aloha & Mahalo, Carol

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    Re: The Earthquake/Seismic Activity Log #2

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      Current date/time is Wed Aug 23, 2017 1:13 am