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Mona Block/Seamount and Puerto Rico Trench
#1
The two EQ Swarm regions are echoing each other and one is Mona Seamount..which, I think, is an ancient volcano that has eroded over time?
Scratchinghead

It's kind of interesting that it's shaking so hard and so often, and then that worse region on the south side of Puerto Rico has so much definition if you look closely at the chronological grouping of the activity..it's not exactly a scatter but defined regions..Almost like an "X" or "+" formation.

These are USGS screenshots from today going back 30 days 2.5 and over.

[Image: sDc01oJ.jpg]

[Image: LM5BlXf.png]

[Image: LXUZBe4.png]

[Image: TqdB9PV.png]

[Image: Ij1LvnX.png]



Article from 2012
The National Oceanic and Atmospheric Administration (NOAA) states that the Puerto Rico Trench is the deepest part of the Atlantic Ocean, with water depths exceeding 5.2 miles! The Puerto Rico Trench is also associated with the most negative gravity anomaly on earth, -380 milliGal, which indicates the presence of an active downward force.
The region is located on an active plate boundary zone between the North American plate and the northeast corner of the Caribbean plate. The North American tectonic plate is descending under Puerto Rico and the Virgin Islands, south of the trench.
The results of studies involving mapping and seismic profiling of the sea floor off Puerto Rico’s northern shore, have uncovered evidence of an enormous submarine landslide. The the suspect slide extends across roughly 35 square miles, and evidence indicates that a slide of this size would have involved approximately 620 cubic miles of material!
Assuming that the slide occurred as a single event, an underwater slide of this magnitude would have generated a tsunami of frightening proportions. The effects of such a tsunami on present day Puerto Rico would be disastrous, and considering that the region is still tectonically active, an event like this could likely occur again at some point in the future.



Remember Zen Gardner?

Zen Gardner:
“What Puerto Rico Trench?”  Exactly.
The arrows in the map above show the direction the underlying Caribbean tectonic plates are moving, with the resultant build-up of pressure releasing into a myrid of earthquakes in the region over the years. Puerto Rico is the smaller green island in the middle, with the Dominican Republic the larger island to the left. The string of other Caribbean islands is buried under the earthquake markers that flow down the page to the lower right.
You can see the Puerto Rico Trench wraps around the entire zone.
A few little known facts came to the fore as I was researching this area after spotting the recent increase in seismic activity in the Caribbean region.
1. The Puerto Rico Trench is the biggest and deepest such trench in the entire Atlantic ocean.
2. This trench is capable of producing 8.0 earthquakes and above.
3. The risk of a major quake, underwater landslide and mega tsunami are as great as that of the Seattle area. In fact, one recent risk assessment put it at 35 to 55%!
4. The zone hasn’t ruptured in over 200 years and that has geologists seriously concerned.
In other words, something major will happen. No one knows when, but it will happen,as it has in the past there.
Add that to the fact that 35 million people live in surrounding low lying areas and you have a monumental disaster just waiting to happen.
But Why No Warning?
What struck is that in everything I’m reading, it’s admitted this risk is huge but it’s hardly known in the area. Even Wikipedia admits:
Knowledge of the earthquake and tsunami risks has not been widespread among the general public of the islands located near the trench.
Why? Would it negatively impact the local economy, much like the idiot mayor’s development worries in the movie Jaws? Are there really such people in charge?
Well, look at the Gulf oil disaster and Fukushima for starters. I don’t think the concern is anyone’s health or well being – it’s preserving the status quo while the disasters take their toll as quietly as possible.
Remember–it’s not crisis prevention, it’s crisis management.
Puerto Rico, the Virgin Islands to its east, and eastern Hispaniola to its west, are located on an active plate boundary zone between the North American plate and the northeast corner of the Caribbean plate (figure 1). The Caribbean plate is roughly rectangular, and it slides eastward at about 2 cm/yr relative to the North American plate. Motion along its northern boundary (in the plate boundary zone region) is dominantly strike-slip (a geological fault in which an adjacent surface moves horizontally), with a small component of shortening. In contrast, on its eastern boundary, the Caribbean overrides the North American plate, creating the island arc of the Lesser Antilles with its active volcanoes.


https://globalrumblings.blogspot.com/201...azard.html
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#2
(02-11-2020, 06:43 PM)Mmmkay_Ultra Wrote: The two EQ Swarm regions are echoing each other and one is Mona Seamount..which, I think, is an ancient volcano that has eroded over time?
Scratchinghead

It's kind of interesting that it's shaking so hard and so often, and then that worse region on the south side of Puerto Rico has so much definition if you look closely at the chronological grouping of the activity..it's not exactly a scatter but defined regions..Almost like an "X" or "+" formation.

These are USGS screenshots from today going back 30 days 2.5 and over.

[Image: sDc01oJ.jpg]

[Image: LM5BlXf.png]

[Image: LXUZBe4.png]

[Image: TqdB9PV.png]

[Image: Ij1LvnX.png]



Article from 2012
The National Oceanic and Atmospheric Administration (NOAA) states that the Puerto Rico Trench is the deepest part of the Atlantic Ocean, with water depths exceeding 5.2 miles! The Puerto Rico Trench is also associated with the most negative gravity anomaly on earth, -380 milliGal, which indicates the presence of an active downward force.
The region is located on an active plate boundary zone between the North American plate and the northeast corner of the Caribbean plate. The North American tectonic plate is descending under Puerto Rico and the Virgin Islands, south of the trench.
The results of studies involving mapping and seismic profiling of the sea floor off Puerto Rico’s northern shore, have uncovered evidence of an enormous submarine landslide. The the suspect slide extends across roughly 35 square miles, and evidence indicates that a slide of this size would have involved approximately 620 cubic miles of material!
Assuming that the slide occurred as a single event, an underwater slide of this magnitude would have generated a tsunami of frightening proportions. The effects of such a tsunami on present day Puerto Rico would be disastrous, and considering that the region is still tectonically active, an event like this could likely occur again at some point in the future.



Remember Zen Gardner?

Zen Gardner:
“What Puerto Rico Trench?”  Exactly.
The arrows in the map above show the direction the underlying Caribbean tectonic plates are moving, with the resultant build-up of pressure releasing into a myrid of earthquakes in the region over the years. Puerto Rico is the smaller green island in the middle, with the Dominican Republic the larger island to the left. The string of other Caribbean islands is buried under the earthquake markers that flow down the page to the lower right.
You can see the Puerto Rico Trench wraps around the entire zone.
A few little known facts came to the fore as I was researching this area after spotting the recent increase in seismic activity in the Caribbean region.
1. The Puerto Rico Trench is the biggest and deepest such trench in the entire Atlantic ocean.
2. This trench is capable of producing 8.0 earthquakes and above.
3. The risk of a major quake, underwater landslide and mega tsunami are as great as that of the Seattle area. In fact, one recent risk assessment put it at 35 to 55%!
4. The zone hasn’t ruptured in over 200 years and that has geologists seriously concerned.
In other words, something major will happen. No one knows when, but it will happen,as it has in the past there.
Add that to the fact that 35 million people live in surrounding low lying areas and you have a monumental disaster just waiting to happen.
But Why No Warning?
What struck is that in everything I’m reading, it’s admitted this risk is huge but it’s hardly known in the area. Even Wikipedia admits:
Knowledge of the earthquake and tsunami risks has not been widespread among the general public of the islands located near the trench.
Why? Would it negatively impact the local economy, much like the idiot mayor’s development worries in the movie Jaws? Are there really such people in charge?
Well, look at the Gulf oil disaster and Fukushima for starters. I don’t think the concern is anyone’s health or well being – it’s preserving the status quo while the disasters take their toll as quietly as possible.
Remember–it’s not crisis prevention, it’s crisis management.
Puerto Rico, the Virgin Islands to its east, and eastern Hispaniola to its west, are located on an active plate boundary zone between the North American plate and the northeast corner of the Caribbean plate (figure 1). The Caribbean plate is roughly rectangular, and it slides eastward at about 2 cm/yr relative to the North American plate. Motion along its northern boundary (in the plate boundary zone region) is dominantly strike-slip (a geological fault in which an adjacent surface moves horizontally), with a small component of shortening. In contrast, on its eastern boundary, the Caribbean overrides the North American plate, creating the island arc of the Lesser Antilles with its active volcanoes.


https://globalrumblings.blogspot.com/201...azard.html

Do you remember the Hilena slump chaos on the big Island from 2018?

https://seismo.berkeley.edu/blog/2018/05...slump.html

Game over, TEOTWAWKI...good doom shit!!!!
Fuck That Shit!
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#3
Could the seismic activity be why the sharks are gathering and not migrating?

https://the-fringe.com/thread-cluster_of...inas_coast
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#4
Somewhere in the PR trench is a mud volcano also. Odd that there is not a lot of news regarding this. It is a bigger danger of giving way than the Cascadia subduction zone. I wonder if the tsunami would hit Florida.

[Image: RS5ANAP.jpg]
Puerto Rico Trench
The Puerto Rico Trench is the deepest part of the Atlantic Ocean and the Caribbean Sea. The peninsula of Florida is visible at the upper right. The islands of Cuba, Hispaniola, Puerto Rico, and the island group of the Virgin Islands are all identified on this three-dimensional bathymetric map, which displays depth.
Image courtesy of the U.S. Geological Survey
A large fault system, the Bunce Fault, was discovered in very deep water near the trench. The Bunce Fault is similar to the San Andreas Fault in California.
A mud volcano was discovered at a depth of 7,900 meters (25,919 feet). The volcano spewed mud as far as 10 kilometers (6.2 miles).
https://www.nationalgeographic.org/maps/...co-trench/
Mmmkay_Ultra  likes this!
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#5
Big tsunami raked Mexico's Yucatan coast 1,000 years ago

A wall of debris stretching about 30 miles (50 km) may be the remnants of a natural disaster that struck Mexico’s Caribbean coast more than 1,000 years ago in an area where tourists now flock to beach resorts and ancient Maya ruins.

https://www.reuters.com/article/us-scien...K620150305
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#6
The "Puerto Rico Trench" is a pseudo-medical condition, known to affect post-pubescent Puerto Rican males. Onset of the condition most often occurs in the deepest regions of the underarm pit, which have been clininally demonstrated to emit noxious plumes of endocrine vapour, mostly consisting of hormonal and chemical liquids. Doctors usually recommened showering more frequently as a treatment, however, due to the lack of systematic checkups and a public campaign of awareness, many Puerto Rican males who are affected by this condition have resorted to abundantly spraying aerosol deodorants, such as AXE®, a brand which has been criticized for its predatory marketing to the Hispanic community, in various affected anatomical areas, even the darkest nether regions, which is not recommended by the Surgeon General. This practice is most often referred to as the "Puerto Rican Shower".
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#7
popnana

Not really a bump..but more of a Thinking for the next 24-48 hours.

[Image: n1ZquKm.png]
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