[x] Welcome at THunting.com!

A fun place to talk about Metal Detecting, Treasure Hunting & Prospecting. Here you can share finds and experience with thousands of members from all over the world

Join us and Register Now - Its FREE & EASY

THunting.com
Treasure Hunting & Metal Detecting Community
   
Advanced Search
*
Welcome, Guest! Please login or register HERE - It is FREE and easy.
Only registered users can post and view images on our message boards.
Did you miss your activation email?

Login with email, password and session length
Or Login Using Social Network Account
2
News:
Pages: 1    Go Down
Print
Share this topic on FacebookShare this topic on Del.icio.usShare this topic on DiggShare this topic on RedditShare this topic on Twitter
Tags:
0 Members and 1 Guest are viewing this topic.
Offline Eugene52Topic starter
M.D. Electronic Builders Club
Gold Member
*

Mood:Happy
Happy

M.D. Electronic Builders Club
Join Date: Dec, 2008
Thank you397

Activity
0%
Male
United States
Posts: 2630
Referrals: 0

17957.00 Gold
View Inventory
Windows Vista/Server 2008
Windows Vista/Server 2008
Firefox 31.0
Firefox 31.0

Awards

Teknetics , Fisher , Discovery3300 and TIANXUN 19 kHz VLF Metal Detector
« on: August 27, 2014, 10:22:37 pm »
Go Up Go Down

Two brand New Articles were posted "today" on the Volcanoes very recent increased Earthquake activity and also an article on "Will Oil Fracking increase the Volcanoes potential to erupt" ?   I say yes on the second question !!! Super Volcanoes can be 1000 times more powerful than a normal volcano like Mt. Saint Helen's in Washington State USA.

Here is the first Article Past and Link:


    Home
    Earth
    Earth Sciences
    August 27, 2014

Yellowstone supereruption would send ash across North America
12 hours ago
AGU: Yellowstone supereruption would send ash across North America
An example of the possible distribution of ash from a month-long Yellowstone supereruption. The distribution map was generated by a new model developed by the US Geological Survey using wind information from January 2001. The improved …more

In the unlikely event of a volcanic supereruption at Yellowstone National Park, the northern Rocky Mountains would be blanketed in meters of ash, and millimeters would be deposited as far away as New York City, Los Angeles and Miami, according to a new study.

An improved computer model developed by the study's authors finds that the hypothetical, large eruption would create a distinctive kind of ash cloud known as an umbrella, which expands evenly in all directions, sending ash across North America.

A supereruption is the largest class of volcanic eruption, during which more than 1,000 cubic kilometers (240 cubic miles) of material is ejected. If such a supereruption were to occur, which is extremely unlikely, it could shut down electronic communications and air travel throughout the continent, and alter the climate, the study notes.

A giant underground reservoir of hot and partly molten rock feeds the volcano at Yellowstone National Park. It has produced three huge eruptions about 2.1 million, 1.3 million and 640,000 years ago. Geological activity at Yellowstone shows no signs that volcanic eruptions, large or small, will occur in the near future. The most recent volcanic activity at Yellowstone—a relatively non-explosive lava flow at the Pitchstone Plateau in the southern section of the park—occurred 70,000 years ago.

Researchers at the U.S. Geological Survey used a hypothetical Yellowstone supereruption as a case study to run their new model that calculates ash distribution for eruptions of all sizes. The model, Ash3D, incorporates data on historical wind patterns to calculate the thickness of ash fall for a supereruption like the one that occurred at Yellowstone 640,000 years ago.

The new study provides the first quantitative estimates of the thickness and distribution of ash in cities around the U.S. if the Yellowstone volcanic system were to experience this type of huge, yet unlikely, eruption.

Cities close to the modeled Yellowstone supereruption could be covered by more than a meter (a few feet) of ash. There would be centimeters (a few inches) of ash in the Midwest, while cities on both coasts would see millimeters (a fraction of an inch) of accumulation, according to the new study that was published online today in Geochemistry, Geophysics, Geosystems, a journal of the American Geophysical Union.

AGU: Yellowstone supereruption would send ash across North America
The figure above shows illustrations of plume shapes that would result from different types of volcanic eruptions. A weak plume (left) typically forms above small eruptions such as the April-May 2010 eruption of the Eyjafjallajökull volcano …more

The model results help scientists understand the extremely widespread distribution of ash deposits from previous large eruptions at Yellowstone. Other USGS scientists are using the Ash3D model to forecast possible ash hazards at currently restless volcanoes in Alaska.

Unlike smaller eruptions, whose ash deposition looks roughly like a fan when viewed from above, the spreading umbrella cloud from a supereruption deposits ash in a pattern more like a bull's eye – heavy in the center and diminishing in all directions – and is less affected by prevailing winds, according to the new model.

"In essence, the eruption makes its own winds that can overcome the prevailing westerlies, which normally dominate weather patterns in the United States," said Larry Mastin, a geologist at the USGS Cascades Volcano Observatory in Vancouver, Washington, and the lead author of the new paper. Westerly winds blow from the west.

"This helps explain the distribution from large Yellowstone eruptions of the past, where considerable amounts of ash reached the west coast," he added.

The three large past eruptions at Yellowstone sent ash over many tens of thousands of square kilometers (thousands of square miles). Ash deposits from these eruptions have been found throughout the central and western United States and Canada.

Erosion has made it difficult for scientists to accurately estimate ash distribution from these deposits. Previous computer models also lacked the ability to accurately determine how the ash would be transported.

Using their new model, the study's authors found that during very large volcanic eruptions, the expansion rate of the ash cloud's leading edge can exceed the average ambient wind speed for hours or days depending on the length of the eruption. This outward expansion is capable of driving ash more than 1,500 kilometers (932 miles) upwind – westward—and crosswind – north to south—producing a bull's eye-like pattern centered on the eruption site.

In the simulated modern-day eruption scenario, cities within 500 kilometers (311 miles) of Yellowstone like Billings, Montana, and Casper, Wyoming, would be covered by centimeters (inches) to more than a meter (more than three feet) of ash. Upper Midwestern cities, like Minneapolis, Minnesota, and Des Moines, Iowa, would receive centimeters (inches), and those on the East and Gulf coasts, like New York and Washington, D.C. would receive millimeters or less (fractions of an inch). California cities would receive millimeters to centimeters (less than an inch to less than two inches) of ash while Pacific Northwest cities like Portland, Oregon, and Seattle, Washington, would receive up to a few centimeters (more than an inch).

Even small accumulations only millimeters or centimeters (less than an inch to an inch) thick could cause major effects around the country, including reduced traction on roads, shorted-out electrical transformers and respiratory problems, according to previous research cited in the new study. Prior research has also found that multiple inches of ash can damage buildings, block sewer and water lines, and disrupt livestock and crop production, the study notes.

The study also found that other eruptions – powerful but much smaller than a Yellowstone supereruption—might also generate an umbrella cloud.

"These model developments have greatly enhanced our ability to anticipate possible effects from both large and small eruptions, wherever they occur," said Jacob Lowenstern, USGS Scientist-in-Charge of the Yellowstone Volcano Observatory in Menlo Park, California, and a co-author on the new paper.

Tomorrow I will post the "Oil Fracking and Volcanoes" how they may be connected !!!

Here is today's link:

You are not allowed to view links.
Please Register or Login

http://phys.org/news/2014-08-yellowstone-supereruption-ash-north-america.html


Best Regards..............Eugene

Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,57646.msg280734.html#msg280734



There are 1 attachment(s) in this post which you can not view or download

Please register for viewing them.

yellowstone super volcano.jpg


« Last Edit: August 27, 2014, 10:30:52 pm by Eugene52 »
Logged

Let's Talk Treasure right here on Thunting.com

Offline Homefire
Global Moderator
Platin Member
*****

Join Date: Jan, 2009
Thank you662

Activity
0%
Male
United States
Posts: 15906
Referrals: 0

52360.00 Gold
View Inventory
Windows NT 6.3
Windows NT 6.3
Mozilla compatible
Mozilla compatible

Awards
« Reply #1 on: August 27, 2014, 10:58:02 pm »
Go Up Go Down

  Fracking could be that little bit that's needed.   Think the Butter Fly Effect.    



Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,57646.msg280736.html#msg280736




« Last Edit: August 28, 2014, 08:20:17 am by homefire »
Logged
Offline OregonDirtFisher
Copper Member
*

Join Date: Aug, 2014
Thank you4

Activity
0%

United States
Posts: 41
Referrals: 0

170.00 Gold
View Inventory
Windows 7/Server 2008 R2
Windows 7/Server 2008 R2
Mozilla compatible
Mozilla compatible

Awards

Garrett Ace 150; Garrett AT Pro w/NEL Hunter&Tornado Coils; Fisher Gold Bug Pro
« Reply #2 on: August 28, 2014, 08:03:50 am »
Go Up Go Down

I remember sitting up on MT Hebo here in eighty watching MT ST. Helens blow her top.  I do recall that ash cloud going completely around the earth.  Can imagine Yellowstone going off.  It would put us in a new ice age!

Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,57646.msg280748.html#msg280748




Logged
Offline Homefire
Global Moderator
Platin Member
*****

Join Date: Jan, 2009
Thank you662

Activity
0%
Male
United States
Posts: 15906
Referrals: 0

52360.00 Gold
View Inventory
Windows NT 6.3
Windows NT 6.3
Mozilla compatible
Mozilla compatible

Awards
« Reply #3 on: August 28, 2014, 08:26:17 am »
Go Up Go Down

  As large and wide as Yellow Stone is I'm thinking if it does Erupt it would be more like a Spooge then Explosive eruption.  In any case All Hell is going to Rise.

Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,57646.msg280749.html#msg280749




Logged
Offline Mudflap
Knight
Gold Member
*

Join Date: Apr, 2010
Thank you92

Activity
0%

United States
Posts: 1864
Referrals: 0

9300.00 Gold
View Inventory
Mac OS X 10.9
Mac OS X 10.9
Firefox 31.0
Firefox 31.0

Awards
« Reply #4 on: August 29, 2014, 06:47:46 pm »
Go Up Go Down

Quote "In the unlikely event of a volcanic supereruption at Yellowstone National Park,..."

Probably not all that unlikely according to the scientists.


Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,57646.msg280811.html#msg280811




Logged
Offline golddustcarl
Silver Member
*

Mood:Happy
Happy

Join Date: May, 2014
Thank you159

Activity
0%
Male
United States
Posts: 1333
Referrals: 0

7377.00 Gold
View Inventory
Windows 7/Server 2008 R2
Windows 7/Server 2008 R2
Mozilla compatible
Mozilla compatible

Awards

NOKTA SIMPLEX+,Tesoro Vaquero, VibraProbe 580, Garrett Carrot, Garrett Master Hunter ADSIII
« Reply #5 on: August 29, 2014, 07:09:39 pm »
Go Up Go Down

Quote:Posted by homefire
  As large and wide as Yellow Stone is I'm thinking if it does Erupt it would be more like a Spooge then Explosive eruption.  In any case All Hell is going to Rise.


Saw a Nova program last year, and they said that it had exploded may times before. It doesn't just come out of one cone, but in many different places, and not necessarily at the same time. Sediment layers indicate that it was very explosive and ash sediments were found as far away as the Mississippi River.
Maybe we should all move to Patagonia, South America.

Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,57646.msg280815.html#msg280815


A bad day at gold prospecting or metal detecting is better than a good day at work.


Logged

GOLDDUST CARL

Print
Pages: 1    Go Up
Jump to:  

Powered by SMF 1.1.19 | SMF © 2005, Simple Machines | Sitemap
Copyright THunting.com