And that starts with infrastructure. Seismologists have a saying: “Earthquakes don’t kill people— buildings do.” Earthquakes release energy in the form of seismic waves that shake the ground both vertically and horizontally. Normal buildings can handle those up-and-down forces no problem.
For that, we turn to seismologists, geologists who specialize in studying seismic waves: the energy that’s unleashed after a slip and breakage on a fault. Seismologists use GPS, radar satellites, and super sensitive machines called seismographs to detect and analyze these waves as they travel underground. Global networks of these machines record seismic data, which then get shared and studied through a facility called SAGE —no big deal.
Global networks of these machines record seismic data, which then get shared and studied through a facility called SAGE —no big deal. Seismologists help us not only better understand how earthquakes happen, but also estimate the risks of one happening. Now, there’s more than one type of seismic wave— and some are more dangerous than others.
Like, seismic waves from an earthquake deep underground largely peter out by the time they reach the surface. Seismic waves are more intense the closer you are to an earthquake's epicenter— the point that's directly above where the fault slipped. The type of ground that seismic waves move through can also affect the intensity of an earthquake.
The reason? Older rocks! Seismic waves on the U.S. East Coast travel farther because the rocks there are much older than the rocks on the West Coast. The faults in these older rocks have had more time to heal, which lets the waves cross them more effectively, and be felt much farther away.
Hundreds of years later, scientists developed the field of seismology to study Earth’s insides. Tracking seismic waves within the earth helped British geologist Richard Oldham find the first evidence of Earth’s core in 1906, and led British physicist Harold Jeffreys to suggest that the core might be liquid twenty years later.
Lehmann solved one huge mystery, but there’s still so much to learn about Earth’s core. Further seismological research confirmed the makeup of that inner core: iron and nickel. But a 2025 study of seismic waves showed that the core may be changing shape and even changing the direction and speed of its rotation.
Geologists also study deep Earth through seismology: a field that analyzes seismic waves from earthquakes and other vibrations within the earth. From seismic wave measurements, geologists can take “x-rays” of the Earth, piecing together the properties of its layers. And even though we still haven’t made it to the mantle, Project Mohole and the Kola Superdeep Borehole weren’t failures.
But it turns out that sound can actually kill them. Loud seismic air guns, for example can kill zooplankton up to a kilometer away from the blast site. It's like a sonic scythe just cutting through the water and killing what is, essentially, the basis of the marine food chain.
The high-speed rail system that connects Tokyo to other Japanese cities is connected to the country’s earthquake early warning system. A network of seismographs monitors seismic waves below the surface and can send out an alert of high activity within seconds. The system then cuts the power to all trains within the at-risk zone and brings them to an emergency stop.
So can we tell when a tremor is nothing to worry about— and when it’s the lead-up to something more dangerous? And how do seismologists even estimate earthquake risk? Well, it’s nuanced. You see, “prediction” has a very specific meaning in earthquake-speak.
Volcanologists— who are not a species from “Star Trek” but rather scientists who study volcanoes— keep tabs on the amount of magma held within the volcano's underground reservoir, using tools like seismometers. Recent studies suggest there's more magma down there than we initially thought.
So when you think about that as an analogy, our goal is to build an assessment that, even if you've seen some YouTube videos online, So thinking about the seismic shift that would have to happen in this country to embrace that, in fact, college isn't the only endpoint for education--
So you would understand what happens to the rest of the work that is there-- the farms to be tilled and other work There's geology and seismicity.
So depending of the intensity of the earthquake, the vibration I feel in my arm is stronger or lower. And I call this the the seismic sense. Um yes. Um that would be it. And then the and then what we do like we see this Neil the extension of the news Neil
That's a different version of things being thrown out of a helicopter. There were also seismic sensors that were going out, magnetic sensors. This was early sensor technology.
These are things when Napster erupted in '99 and I got onto it, I'd gotten online in the late '80s, and it was so obviously a seismic shift, and such a big rock in the water. It was clear in '99 that the world was never going to go back.
Seismologists use GPS, radar satellites, and super sensitive machines called seismographs to detect and analyze these waves as they travel underground. Global networks of these machines record seismic data, which then get shared and studied through a facility called SAGE —no big deal. Seismologists help us not only better understand how earthquakes happen, but also estimate the risks of one happening.
So those are the body waves. But there’s another major type of seismic wave: surface waves, which travel along the, well, surface! And even though surface waves are the slowest, they can be the most destructive because they produce an undulating pattern with up-and-down, back-and-forth, and side-to-side motion.
Seismic waves are more intense the closer you are to an earthquake's epicenter— the point that's directly above where the fault slipped. The type of ground that seismic waves move through can also affect the intensity of an earthquake. Like, in 2011, an earthquake in Virginia was felt up to 600 miles away from its epicenter.
Moment magnitude describes the absolute energy released during an earthquake. It’s reached through a combination of seismic data and the physical shifts in the land that happen during an earthquake. Usually, this is referred to as just “magnitude,” or how much energy was released in general.
It’s an estimate of the long-term odds of an earthquake happening on a specific fault sometime in the future, based on how much time has passed between big earthquakes in a particular spot. Which is why gathering and analyzing seismic data is so important! They’re what forecasts are based on.
Earthquakes can happen anywhere on Earth, at any time— and unfortunately, we have no way of predicting exactly when or where. But by studying and tracking seismic data, scientists continue to refine forecasts, better assess the risks, and even research how to prevent and protect us from the most damaging shocks. Next time, we’ll learn more about earthquake preparedness.
Further seismological research confirmed the makeup of that inner core: iron and nickel. But a 2025 study of seismic waves showed that the core may be changing shape and even changing the direction and speed of its rotation. There’s also evidence that the inner core isn’t completely solid, but sort of squishy.
bridgmanite, which scientists think makes up much of Earth’s super-hot lower mantle. Geologists also study deep Earth through seismology: a field that analyzes seismic waves from earthquakes and other vibrations within the earth. From seismic wave measurements, geologists can take “x-rays” of the Earth, piecing together the properties of its layers.
about what you say you are doing about how much you care about gender equity and what you actually are doing to do it. And women are driving this seismic cultural shift. We had this experience when we launched where the first few people said, oh my god, yeah, no, women, like that is such a niche market.
how they could do in these special enclaves, you know. We're in a semi seismic area here.
So you would understand what happens to the rest of the work that is there-- the farms to be tilled and other work And it is in a high seismic zone where earthquakes have happened in the past few years, about five or six times, all over 5
You know? And I smiled about that. There's not like this seismic shift.
But he has no shoes on, and the sole of his feet are cracked. And it was a major seismic event that really led to the split of Islam between Shia and Sunni.
I would want to do seismic or other geophysical surveys and have some idea of the strata and what lies underneath my feet or underneath my wheels
small amounts of elected representation can create seismic political change.
about the fact that the the seismic testing that was going on in Madagascar
place. So it was a very vivid and very strong a strong score. So that yeah this uh the score is based on seismic activity of an a specific place and I also transformed this into into paintings. This is like a 100 century of earthquakes in the US that I also have
world. So this I will know if it the earth happens very far from where I am or very close. And also like my ne my next project is to feel the seismic activity on the moon because we feel that if we use internet as a sense we can explore things that happening very far from where we are like in the other side of the planet or even in space. So
They have all kinds of seismic activity.
It was just-- it was a seismic experience, reading him.
But buildings made from strong and flexible steel can stretch and bend more easily, absorbing the energy before returning to their original shape. This kind of preemptive engineering is part of seismic design, a way of designing and evaluating a building’s resistance to seismic forces. It’s a lot like how buildings are required to have a certain number of fire exits.
But not all big earthquakes necessarily produce strong shaking at the surface. Like, seismic waves from an earthquake deep underground largely peter out by the time they reach the surface. Seismic waves are more intense the closer you are to an earthquake's epicenter— the point that's directly above where the fault slipped.
Huge change, seismic change, that means there is likely greater resistance to the idea.
is radical change, seismic change, there are a number of ways we can reduce that friction.
One of my favorite things in "Star Wars" is the seismic charges from Django Fett in the Slave 1 in "Attack of the Clones."
One of my favorite things in "Star Wars" is the seismic charges from Jango Fett in the "Slave 1 and Attack of the Clones."
It doesn't have to be depicted as this seismic thing in someone's life.
and radiating shock waves that were detected on seismographs as far north as Columbia University in New York
get for a typical star that didn't have seismology.
He was one of the people who founded modern seismology, for example.
Dam in North America taller than the Space Needle in a seismic area um to sift through all of this slag and create
hire more playwrights and the business changed over it was a seismic shift
so that's the studio system here's the next seismic shift it's