During an eruption, if the wind is from the east at 10,000 feet (outflow), the tephra will fall on Vancouver, Canada in about an hour. This Page Hyperlinked [click on] Mount Baker Stratovolcano (background)© ™ ®/ Kulshan Stratovolcano© ™ ®, Simon Fraser University (foreground)© ™ ® ~ Image by Stan G. Webb - In Retirement© ™ ®, An Intelligent Grandfather's Guides© ™ ® next, The Man From Minto© ™ ® - A Prospector Who Knows His Rocks And Stuff© ™ ®
Learn more about the Cascadia Volcanic Arc© ™ ® (Part of Pacific Ring of Fire) Cascadia Volcanoes© ™ ® and the currently active Mount Meager Massif© ™ ®, part of the Cascadia Volcanic Arc© ™ ® [ash flow, debris flows, fumaroles and hot springs], just northwest of Pemberton and Whistler, Canada ~ My personal interest in the Mount Meager Massif© is that the last volcanic vent blew north, into the Bridge River Valley [The Bridge River Valley Community Association (BRVCA), [formerly Bridge River Valley Economic Development Society], near my hometown. I am the Man From Minto© ™ ® - A Prospector Who Knows His Rocks And Stuff© ™ ® The 2010 Mount Meager landslide was a large catastrophic debris avalanche that flowed to the south, into the Lillooet Valley British Columbia, Canada, on August 6 at 3:27 a.m. PDT (UTC-7). More than 45,000,000 m3 (1.6×109 cu ft) of debris slid down Mount Meager, temporarily blocking Meager Creek and destroying local bridges, roads and equipment. It was one of the largest landslides in Canadian history and one of over 20 landslides to have occurred from the Mount Meager massif in the last 10,000 years. Although voluminous, there were no fatalities caused by the event due in part to its remote and uninhabited location. The landslide was large enough to send seismic waves more than 2,000 km (1,200 mi) away into the neighboring U.S. states of Alaska and Washington and beyond. Multiple factors led to the slide: Mount Meager's weak slopes have left it in a constant state of instability. The massif has been a source of large volcanic debris flows for the last 8,000 years, many of which have reached several tens of kilometres downstream in the Lillooet River valley., to the south. It is arguably the most unstable mountain massif in Canada and may also be its most active landslide area. And on the north side lies Downton Lake Hydro Reservoir, impounded by the La Joi Dam, the uppermost of the Bridge River Project dams. The earliest identified Holocene landslide was in 7900 BP (before the present, or read it as the number of years ago). Further landslides occurred in 6250 BP, 5250 BP, 4400 BP, 2600 BP, 2400 BP, 2240. BP BP, 2170 BP, 1920 BP, 1860 BP, 870 BP, 800 BP, 630 BP, 370 BP, 210 BP, 150 BP and in 1931, 1947, 1972, 1975, 1984, 1986 and 1998. These events were attributed to structurally weak volcanic rocks, glacial unloading, recent explosive volcanism and glacial activity. Those who dance with earthquakes and volcanoes are considered mad by those who cannot smell the sulfur. We begin to deal with BIG (MEGA) EARTHQUAKES at Simon Fraser University (foreground) Kulshan Stratovolcano© / Mount Baker Stratovolcano (background)©New Cascadia Dawn© - Cascadia Rising - M9 to M10+, An Intelligent Grandfather's Guide© next, ~ Images by Stan G. Webb - In Retirement©, An Intelligent Grandfather's Guides©Countdown to Earthquake Drill - International Great ShakeOut Day is on Thursday, October 20, 2022 at 10:20AM, and annually on the 3rd Thursday in October thereafter - - I grew up in small towns and in the North where the rule is share and share alike. So, I'm a Creative Commons type of guy. Copy and paste ANY OF MY MATERIAL anywhere you want. Hyperlinks to your own Social Media are at the bottom of each post. Creative Commons License
This work is licensed under my Creative Commons Attribution 4.0 International License.

Monday, May 21, 2018

Getting Ready

>> Sound On >> Best viewed Full Screen >> Darkened Room


Tohoku Earthquake and Tsunami, 2011

To differentiate the process for resilience and survival, I have added a new website:

You watched it on TV, YouTube and here:
  1. 2011 Japan (above) - Tohoku M9.0 Earthquake and Tsunami (YouTube Video – 26:48 minutes ).
    This is a 26 minute long video of the 2011 Japan Earthquake and Tsunami.
    This was the worst tsunami to hit Japan in the past 1,100 years, and
    even today they are still recovering.
  2. 2004 Sumatra M9.1 earthquake (YouTube Video – 2:56 minutes )  This rupture was the greatest fault length of any in recorded earthquake history, spanning a distance of 1500 km (900 miles).
    -     The portion of the fault that ruptured lies deep in the earth's crust,
    in places as much as 50 km (31 miles) below the ocean floor. There
    the two tectonic plates, which had been stuck together, suddenly
    broke free, the upper plate sliding back upward and to the west by
    as much as 20 m (65 feet) along the plate boundary.
  3. 1964 Alaska, United States - The LIVE Look and Feel of a M9.2 to M9.3 Megaquake and Megatsunami
    - The Great Alaskan Earthquake 1964 - Magnitude 9.2 - Tsunami Affects         The most powerful subduction zone earthquake in U.S. history, the 1964 magnitude (M) 9.2 Alaska earthquake, caused tsunamis, 129 deaths in three states and an estimated $2.38 billion in property losses (in 2017 dollars). Most deaths and damage along the Alaska coast resulted from local tsunamis caused by undersea landslides. The eruption of Mount St. Helen's, in 1980, killed 57 people, damaged more than 185 miles of roads, caused the cancellation of more than 1,000 airline flights and resulted in $1.1 to $2 billion in economic losses.
Let Us Build A Response Together. Here I will post the better ideas gleaned from my best authority, and your comments, below this post.  Please help us build this data base.
…
https://cascadiaresilienceandsurvival.blogspot.ca/2017/10/let-us-build-response-together.html

Blueprints that might help make subduction zone areas more resilient.


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