Earthquakes within the last 24 hours
- Thread starter buster
- Start date
We are always along for the ride. The fault line above South America has been rather active lately. I can't understand why they build non earthquake proof concrete buildings there. Right on the fault line.
Concrete is a wonderful building material, impressive compression strength. But near zero tolerance for quakes.
Steel on the other hand is a better choice for areas that shake.
When we flew earthquake relief flights to Haiti, it was obvious the concrete buildings failed, the steel hangar type buildings did not.
Concrete is a wonderful building material, impressive compression strength. But near zero tolerance for quakes.
Steel on the other hand is a better choice for areas that shake.
When we flew earthquake relief flights to Haiti, it was obvious the concrete buildings failed, the steel hangar type buildings did not.
All along the ring of fire.
"4 BIG EARTHQUAKES IN DIFFERENT PLACES? Is that rare? NO.
This event (4 earthquakes >=5.5 M within 24 hours >2000 mi apart) happened ~20 times this year.
It last happened on June 19 with 3 big, well-separated eqs, and June 7 for 4. They just aren't usually all in populated places." - Weather Matrix
This event (4 earthquakes >=5.5 M within 24 hours >2000 mi apart) happened ~20 times this year.
It last happened on June 19 with 3 big, well-separated eqs, and June 7 for 4. They just aren't usually all in populated places." - Weather Matrix
AZjeff
$50 Site Donor 2023
Cheaper and low tech?
I was in Turkey in the summer of 2000 when an earthquake hit. If the building codes were properly written and enforced, the damage and loss of life would have been much less. Instead, property owners were adding 3 additional floors onto 4 story buildings with no reinforcement of the foundation or lower floors. Concrete standards, which were generally inferior to US building standards, were cheated on. Often, you could rub concrete with a stick and sand would come off.
When you hear about earthquake disasters in places like Afghanistan, buildings collapse with people inside. With earthquakes in the Richter 6 range.
Ignorance and greed are the root cause of earthquake fatalities.
CleanSump
Site Donor 2026
Include cultures where cheating the customer and skirting regulations are embedded and tolerated business practices.
Concrete can be built to handle earthquakes. They make concrete bridges that easily handle dynamic loads well.
From the big Mexico city quake in the 80's:
"Many damaged buildings were built before the 1976 seismic code for Mexico City was issued. These buildings were designed in accordance with the 1942, 1957, and 1966 design codes which did not provide sufficient strength against an 8.1 magnitude earthquake (Suzuki 1988). Some buildings were not even designed for earthquake resistance (Suzuki 1988)."
https://www.engr.psu.edu/ae/thesis/..._Mexico_City_Summary_and_Lessons_Learned.html
There is enough correlation between major sunspots activity slamming the earth's atmosphere and earthquakes. The theory is that gigantic shifts of the density of the entire atmosphere is sufficient enough to produce both changers of atmospheric force acting on each square inch below those areas and actual change in the gravitational attraction of the atmosphere with respect to the Earth because of the vast change of density of that atmosphere.
Something that an individual cannot perceive as being there still have significant forces.
One of the youtube channels that monitors the sun's activity actually goes as far as to predict earthquakes , when there are major sunspots heading towards earth. And he has been a lot more accurate than people would suspect such a type of observation to predict.
Something that an individual cannot perceive as being there still have significant forces.
One of the youtube channels that monitors the sun's activity actually goes as far as to predict earthquakes , when there are major sunspots heading towards earth. And he has been a lot more accurate than people would suspect such a type of observation to predict.
MolaKule
Staff member
Some space-weather sites have attempted to correlate various solar events with earthquakes. Whether there is actual correlation is still debated.
We were driving north of the GG up in Marin when the alert came in on our cell phones. "Shelter in place, etc". Didn't feel it. As far as I know there were power outages but no major injuries. A 5.6 isn't that big, but was the biggest in the beautiful rural Mendocino County in like 90 years.
CleanSump
Site Donor 2026
Correlation doesn't mean cause and effect. It often rains on the 4th of July. People use fireworks on the 4th of July. Correlation, but not cause and effect.
We had an earthquake here in Maryland. Brick buildings cracked, chimneys' fell over, dishes broke. I simply thought a CH-53 was flying vary low over my house. Felt the same to me until I stepped outside and the ground was shaking.
We had an earthquake here in Maryland. Brick buildings cracked, chimneys' fell over, dishes broke. I simply thought a CH-53 was flying vary low over my house. Felt the same to me until I stepped outside and the ground was shaking.
About a year ago there was a small earthquake about ten miles from my house. Middle of the afternoon and my dogs went nuts and then I heard the loudest boom I’ve ever heard and then a few seconds later a very small shake. I think the boom shook the windows more than the quake did.
MolaKule
Staff member
The New Madrid Mo earthquake of 1811-1812 was a doosey.
James Audubon, the naturalist, was travelling through Kentucky when this occurred and said in one of his journals that the ground "undulated."
It also formed Reelfoot Lake, near Tiptonville Tn, which was actually a subsidence of the land during the earthquake.
https://www.usgs.gov/programs/earth...ary-1811-1812-new-madrid-earthquakes-sequence
https://dps.arkansas.gov/emergency-management/adem/plan-prepare/earthquake/20-intresting-facts/
James Audubon, the naturalist, was travelling through Kentucky when this occurred and said in one of his journals that the ground "undulated."
It also formed Reelfoot Lake, near Tiptonville Tn, which was actually a subsidence of the land during the earthquake.
https://www.usgs.gov/programs/earth...ary-1811-1812-new-madrid-earthquakes-sequence
https://dps.arkansas.gov/emergency-management/adem/plan-prepare/earthquake/20-intresting-facts/
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CleanSump
Site Donor 2026
The plates upheaved so much that parts of the Mississippi River flowed backwards. I remember that from a report I wrote in JHS.
