What's new
US Message Board - Political Discussion Forum

This is a sample guest message. Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!

San Andreas Won't be the Next Big One

longknife

Diamond Member
Joined
Sep 21, 2012
Messages
42,221
Reaction score
13,047
Points
2,250
Location
Sin City
New-Madrid-Fault-Earthquake-Zone.jpg




More heavily populated than when there were others and buildings not constructed to withstand major quakes. Read more @ A New Madrid Earthquake Is Coming And America Will Be Shaken Like Never Before
 

Billy_Bob

Diamond Member
Joined
Sep 4, 2014
Messages
25,557
Reaction score
12,542
Points
1,430
Location
Top Of The Great Divide

Old Rocks

Diamond Member
Joined
Oct 31, 2008
Messages
59,922
Reaction score
7,711
Points
1,840
Location
Portland, Ore.
There are two faults in the US that are far more dangerous than the San Andreas. One is the Cascadia Subduction and the other the New Madrid. Both are due. Interesting times when either lets go.
 

mamooth

Gold Member
Joined
Aug 17, 2012
Messages
24,618
Reaction score
6,839
Points
290
Location
Indianapolis, Indiana
The actual earthquake hazard map is quite different than the one which that panic-blogger presents. It doesn't have New Madrid covering the whole midwest.

4279190_G.jpg
 

9aces

Senior Member
Joined
Dec 30, 2015
Messages
985
Reaction score
198
Points
45
There are two faults in the US that are far more dangerous than the San Andreas. One is the Cascadia Subduction and the other the New Madrid. Both are due. Interesting times when either lets go.

Interesting, I knew about the New Madrid, since I live within a few hundred miles of it. I hadn't heard of the other one, thanks for pointing it out.
 

Billy_Bob

Diamond Member
Joined
Sep 4, 2014
Messages
25,557
Reaction score
12,542
Points
1,430
Location
Top Of The Great Divide
The actual earthquake hazard map is quite different than the one which that panic-blogger presents. It doesn't have New Madrid covering the whole midwest.

4279190_G.jpg
Actually the bloggers map is right on the money when you compare it with the North American Craton and its adjoining masses. Now if you want to discuss probability maps, which is what you posted that is a different story.

North_america_craton_nps.gif


Stress all around the Craton edge have been firing off for some time now...

craton-edge-earthquakes-december-9-2013.jpg

From an article three years ago.. WORLDWIDE EARTHQUAKE SUMMARY: Updated Live, 24/7! - Live Quake Reports Discussions on The Crisis Forums
 

Old Rocks

Diamond Member
Joined
Oct 31, 2008
Messages
59,922
Reaction score
7,711
Points
1,840
Location
Portland, Ore.
The actual earthquake hazard map is quite different than the one which that panic-blogger presents. It doesn't have New Madrid covering the whole midwest.

4279190_G.jpg
A good map, except it is based on historical data. The problem with that is that the Cascadia Subduction zone has not moved in historical times. That red should extend all the way up to the northern tip of Vancouver Island. And the problem with the New Madrid quakes are that the underlaying strata are mostly flatlaying, and act like a drumhead. So that quake put large waves on the Great Lakes, and shook down the houses on stilts in Florida.

Yes, the buildings in that area are not built to even the most minor of earthquake codes. But that would be government regulation.
 

flacaltenn

Diamond Member
Staff member
Senior USMB Moderator
Moderator
Gold Supporting Member
Joined
Jun 9, 2011
Messages
62,126
Reaction score
17,182
Points
2,180
Location
Hillbilly Hollywood, Tenn
There are two faults in the US that are far more dangerous than the San Andreas. One is the Cascadia Subduction and the other the New Madrid. Both are due. Interesting times when either lets go.

People who helped close my house in Tenn all looked SHOCKED when I took the Earthquake insurance. EVERYTHING here is brick facade. And the FlaCalTenn compound has a TRAINLOAD of brick on it.

At least it was affordable compared to Cali. One reason I moved from Cali was that I was living about 0.20mi from the San Andreas with NO earthquake coverage. State took it over and screwed it up..
 

flacaltenn

Diamond Member
Staff member
Senior USMB Moderator
Moderator
Gold Supporting Member
Joined
Jun 9, 2011
Messages
62,126
Reaction score
17,182
Points
2,180
Location
Hillbilly Hollywood, Tenn
The actual earthquake hazard map is quite different than the one which that panic-blogger presents. It doesn't have New Madrid covering the whole midwest.

4279190_G.jpg

Different scales -- different data. The USGS is ESTIMATED accelerations. Not Richter. The blog map shows the extent of 6.8 scale readings in 1895... The actual PROPAGATION of energy will depend on WHERE the accelerations occur.. Don't get all snippy..
 

Old Rocks

Diamond Member
Joined
Oct 31, 2008
Messages
59,922
Reaction score
7,711
Points
1,840
Location
Portland, Ore.
There are two faults in the US that are far more dangerous than the San Andreas. One is the Cascadia Subduction and the other the New Madrid. Both are due. Interesting times when either lets go.

People who helped close my house in Tenn all looked SHOCKED when I took the Earthquake insurance. EVERYTHING here is brick facade. And the FlaCalTenn compound has a TRAINLOAD of brick on it.

At least it was affordable compared to Cali. One reason I moved from Cali was that I was living about 0.20mi from the San Andreas with NO earthquake coverage. State took it over and screwed it up..
The earthquake insurance or the San Andreas fault?

Yes, a very wise move on your part. The earthquake insurance, that is. May not move in your lifetime, but there is a very definate chance that it may. Best to have some water and food in store, and the ability to cook without natural gas or electricity.
 

flacaltenn

Diamond Member
Staff member
Senior USMB Moderator
Moderator
Gold Supporting Member
Joined
Jun 9, 2011
Messages
62,126
Reaction score
17,182
Points
2,180
Location
Hillbilly Hollywood, Tenn
There are two faults in the US that are far more dangerous than the San Andreas. One is the Cascadia Subduction and the other the New Madrid. Both are due. Interesting times when either lets go.

People who helped close my house in Tenn all looked SHOCKED when I took the Earthquake insurance. EVERYTHING here is brick facade. And the FlaCalTenn compound has a TRAINLOAD of brick on it.

At least it was affordable compared to Cali. One reason I moved from Cali was that I was living about 0.20mi from the San Andreas with NO earthquake coverage. State took it over and screwed it up..
The earthquake insurance or the San Andreas fault?

Yes, a very wise move on your part. The earthquake insurance, that is. May not move in your lifetime, but there is a very definate chance that it may. Best to have some water and food in store, and the ability to cook without natural gas or electricity.

Cali took over from the insurers. Raised the deductible to more than 20% of the structure. And the premiums were so much higher that people just dropped off in droves. Went from something like 65% home owners enrolled to less than 20% in just a couple years.

The folks who have to worry about disruption are in Western Tenn --- even St Louis for that matter. You wanna see scary shit ---- go here ---- Mississippi River ran backward 1812, maps 30foot uplifts during those quakes. The Mississippi damned itself and created ReelFoot lake and took a new bed.

In Mid Tenn -- our biggest issue is 2 broken ass damns up in Kentucky that will flood the Cumberland and Nashville if they go. And they probably would. They've been tinkering with those for 10 years and not really "fixing" them.. Just like they tinkered with the floodwalls in New Orleans for a couple decades of funding...
 

Old Rocks

Diamond Member
Joined
Oct 31, 2008
Messages
59,922
Reaction score
7,711
Points
1,840
Location
Portland, Ore.
When I worked for the Forest Service in the Soils lab, we did a study with on thixotropic soils. Part of that involved studies of that quake. We have many places in Portland that have that type of soils. Although I was not directly involved in the study, I kept up on it, and was involved with some of the tests and equipment maintenance.

Those dams sound like the problems with the Fort Peck dam in Montana. During the 2011 floods, the concrete on the spillways was chunking out, and they were worried that the whole dam would fail. But afterwards, they gave the Corps of Engineers just enough money to bring it back to the state it had been. So if get a spring like that again, it could well go. And every dam below it on the Missouri and Mississippi.

People simply don't want to believe that these kinds of things can happen until after they happen.
 

CrusaderFrank

Diamond Member
Joined
May 20, 2009
Messages
121,427
Reaction score
36,603
Points
2,290
Lack of adequate earthquake building codes in those states will be the biggest part of the disaster.

A minor tremor in VA cracked the Washington obelisk and made my office on 42nd and Lexington sway back and forth like a wave pasding under a small boat, so yeah, we're screwed
 

USMB Server Goals

Total amount
$260.01
Goal
$350.00

Most reactions - Past 7 days

Forum List

Top