BREAKING: The San Andreas Fault Could Unleash a Tsunami Bigger Than Anything in History!

[Music] the San Andreas fault an Infamous geological feature is the source of California's most significant earthquakes this major fault line has shaped the state's landscape in history the strike slip fault marks the boundary between the Pacific and North American tectonic plates causing them to slide past each other leading to size activity understanding this fault is crucial as it not only highlights the dynamic nature of Earth's crust but also the potential for future catastrophic earthquakes discover the science behind faults the history of seismic events like the devastating 1906 San Francisco earthquake and ongoing research predicting when the next big Quake might occur so stay tuned for an in-depth look at why the San Andreas fault is not just a fault line but a focal point of scientific study and Public Safety concern understanding faults now first things first let's talk about what a fault actually is imagine you have a big rock and suddenly there's a crack in it now that crack is a fault faults happen when rocks break and slip along a plane now most of the time these faults are tiny almost microscopic and they don't really matter that much but sometimes faults can be huge stretching for Miles beneath the earth's surface now not all Faults Are The Same they come in different types depending on how the rocks move if the rocks move mostly up and down we call it a dip slip fault you might be related to a dip slip now there's another kind called a strike slip fault where the rocks move side to side almost like they're sliding past each other in a club and then there's the thrust fault where one rock gets pushed up over the other and we're not going to give you a metaphor for that one you'll have to use your imaginations now the San Andrea's fault that's a strik slip fault meaning that The Rock move sideways along it like dancing fishies but why does the San Andreas fault even exist well to understand that we need to talk about tectonic plates picture the Earth's crust like a giant jigsaw puzzle made up of different pieces called plates these plates are always moving although very slowly when these plates meet that's where things get interesting the San Andrea's fault marks the boundary between two of these plates the North American Plate and the Pacific Plate now here's where it gets really exciting as these plates move they don't always slide smoothly past each other sometimes they get stuck now when they finally Do Slip all that builtup energy gets released causing an earthquake scientists call this process elastic rebound I like to call it today was not the day to mess with Mom the San Andrea's fault so how does all of this play out along the San Andrea's fault well picture this you're standing on one side of the Vault and I'm standing on the other if theault suddenly moves we'll both die I'm joking you would see me shift to your right and I'd see you shift to my right now that's because the rocks are moving sideways along the fault and when they move they send seismic waves Rippling through the ground causing the shaking that we feel during an earthquake California isn't just home to the San Andreas Vault there's plenty of other vaults crisscrossing the state like the Hayward fault now these faults aren't as famous as the San Andreas fault but they're just as important in fact California has more faults than most States earning it a reputation as earthquake country but despite this not all earthquakes in California are huge the biggest Quake actually happens near subduction zones where one plate slides under another the story of the San Andreas fault stretches back millions of years it all started around 28 million years ago when the Earth's crust began to crack near what is now Los Angeles since then the fault has been steadily growing shaping the landscape of California as it goes and here's the crazy thing it's not done yet the San Andreas fault is still active still moving and still shaping the world around it 1906 one of the most infamous chapters in The Faults history unfolded on the morning of April 18th 1906 it was a day like any other in San Francisco bustling with activity and optimism but in a matter of moments everything changed at 5:12 a.m. the Earth began to tremble violently as the San Andreas fault Unleashed its pent up Fury the earthquake ruptured a massive stretch of land along the San Andreas fault spanning approximately 296 miles from Northwest of San Juan Batista to Cape Menin this rupture wasn't just any ordinary seismic movement it puzzled scientists of the time with its extensive horizontal displacement and sheer length in fact its true significance wouldn't be fully Gra grasp until decades later with the emergence of plate tectonics theory first a fores shock occurred a warning sign felt across the San Francisco Bay Area then around 20 to 25 seconds later the main shock hit with devastating power its epicenter was located near San Francisco the shaking was intense and lasted for about 45 to 60 seconds it wasn't just localized to San Francisco the Tremors were felt as far north as Southern Oregon and as far south as Los Ang Inland the Quakes effects reached Central Nevada imagine the sheer scale of such a seismic event impacting communities over such a vast area the intensity of the shaking varied depending on the underlying geology of the area places situated in valleys filled with sediment experien stronger Tremors compared to areas with solid Bedrock beneath them one striking observation was how reclaimed land from San Francisco Bay fared poorly during the Quake experiencing some of the most severe shaking this understanding of how geological conditions influence shaking intensity is crucial for modern seismic hazard assessment the aftermath of the earthquake was catastrophic San Francisco in particular bore the brunt of the devastation but here's an interesting fact despite its common name the earthquake's impact wasn't limited to San Francisco alone damage was severe along the entire length of the fault rupture now it's estimated that the commonly cited death toll of around 700 people vastly underestimates the true number in reality the loss of life was likely 3 to four times higher with most fatalities occurring in San Francisco and 189 reported elsewhere the earthquake's Legacy extends beyond the immediate destruction that it caused a marked a turning point in our understanding of earthquakes and their underlying mechanisms following the Quake scientists embarked on a quest to comprehend what had happened and why this Quest led to the formulation of the elastic rebound Theory by Reed in 1910 the theory which suggests that accumulated strain and rocks as released during earthquakes Remains the Cornerstone of our understanding of seismic activity to this day the earthquake also sparked a wave of scientific inquiry into the fault itself and the surrounding geological landscape geologists meticulously studied the fault rupture and the effects of the shaking laying the groundwork for modern earthquake research one simal work that emerged from these efforts is the lawon report of 1908 which remains a foundational reference for understanding standing the 1906 earthquake and its consequences seismic findings decades ago scientists noticed a curious pattern earthquakes seem to occur here roughly every 22 years this predictability however has been disrupted in recent times imagine a giant zipper one end of the zipper is always moving steadily while the other end gets stuck building up tension that's a bit like what happens along the San Andreas fault line near Parkfield to the north of Parkfield the plates slide past each other smoothly but south of Parkfield they're stuck causing stress to build up over time and when that stress becomes too much it can snap triggering an earthquake historically the snapping has occurred approximately every 22 years but in recent decades things have been a bit different the last significant earthquake in this area happened in 2004 and since then it's been eerily quiet now does this mean that the danger has passed not quite a team of researchers from different institutions took a closer look at what's happening beneath the surface they wanted to understand if the calm we're experiencing now is just a temporary reprieve or something more significant is at play their findings suggest that while the San Andreas fault near Parkfield may seem quiet on the surface there's still cause for concern think of the Earth's crust as a giant puzzle made up of a bunch of pieces when these pieces shift and grind against each other they create seismic waves before an earthquake there are usually some telltale signs lowf frequency seismic waves start to fade away while high frequency waves become more pronounced it's like the Earth is sending us a warning signal however in the case of Parkfield these warning signals seem to be missing the Earth isn't behaving as expected which has puzzled scientists one theory is that nearby earthquakes may have relieved some of the pressure delaying the inevitable big one but even with this delay the underlying stress along the fault remains to better understand this stress the re search team looked at various factors like how seismic waves travel through the ground and how they change over time these changes can give clues about the state of the fault beneath our feet and what they found was quite concerning the behavior of the fault today is different from what it was before the 2004 earthquake it's like the puzzle pieces are shifting in unexpected ways one particular aspect they focused on is seismic continuation which is just a fancy term for how seismic waves lose energy as they travel through the Earth this attenuation pattern has shown anomalies compared to the period before the 2004 earthquake indicating that the fault may be under significant stress now here's where things start to get just a little tricky while there are signs that the fault is under stress it's not entirely clear when or if that stress will be released in a major earthquake the traditional 22-year cycle might still hold true or it might not this uncertainty is what makes earthquake so challenging to predict but just because we can't predict earthquakes with certainty doesn't mean that we should ignore the signs the relative calm that we're experiencing now shouldn't lull us into a false sense of security California is no stranger to earthquakes cities like Los Angeles and San Francisco sit a top active seismic zones where the ground can shake with little to no warning history of disasters in 1989 the Earth shook in a threatening way once again as a quake though somewhat Milder than that of 1906 rattled the region people however lull themselves into safety only to face an even stronger and more destructive earthquake and North Ridge 5 years later Northridge located on one of the larger secondary fault lines of the San Andreas fault experiened the wrath of an earthquake that devastated the suburb Los Angeles a city of millions is just 31 Mi east of the main fault line placing it directly in the danger zone while earthquakes and increas seismic activity have been measured closer to the fault communities miles away such as Point rise Frasier Park deli city Desert Hot Springs gourman San Bernardino Wrightwood Palmdale and Bodega Bay are also considered at significant risk at a recent National earthquake conference Thomas Jordan the director of the Southern California earthquake Center delivered a worrying announcement he stated that the San Andreas fault is in a very critical state and people must be prepared for a major earthquake at any time NASA satellite measurements from space have pinpointed the Southern California section of the fault as particularly susceptible to giving way this warning has prompted increased alertness among California residents still the Paradox remains that people are forced to return to their normal lives despite living constantly with the risk in fear reminiscent of those who chose to build homes right near active volcanoes or in other highrisk areas as evidenced by the recent eruption of the Canary Island of La Palma now if you're liking this video so far then make sure you subscribe to the channel thank you lessons from L Palma at 2021 L Palma faced the unpleasant truth after over 50 years of dorcy when the kumra viia erupted the ash rain transformed the landscape into a burning desert and lava flows inexorably made their way into the Atlantic while La Palma sparcely populated compared to California managed a Flawless evacuation it serves as a warning about the reliability of early Warning Systems scientists reluctantly admit that the capabilities of seismological monitoring of the earth and Global early warning systems are far from reliable major volcanic eruptions and earthquakes in the last few decades were largely unpredictable the earthquake in Haiti in 2010 the tohoku earthquake in Japan in 2011 and the devastating earthquake quake in Nepal in 2015 all took people by surprise causing massive loss of life even the largest tsunami of our time in 2004 in Southeast Asia occurred without any significant warning returning to the San Andreas Vault history teaches us that the last time a large section broke off in the southern regions in 1857 it was accompanied by an earthquake of magnitude 7.9 and the days leading up to the catastrophe settlers and gold prospectors reported an odd silence that had spread across the land an eerie Calm before the Quake Thomas Jordan emphasizes that continuous seismic activity within certain parameters is reassuring and a sudden silence can indicate an impending catastrophe in the face of this impending disaster millions of people in the region have been preparing for years buildings are constructed based on the latest earthquake safety findings and roads and bridges are designed to flexibly withstand shocks up to magnitudes of 8.0 on the RoR scale the Los Angeles Regional Administration relying on modernization data estimates up to 50,000 seriously injured people $200 billion in property damage and severe disruption to public order lasting for days in the event of an earthquake disaster the mayor of the celebrity Metropolis predicts that 1500 people could anticipate death in a serious case however more pessimistic experts argue that such estimates are a farce if the San Andre's Vault were to break apart entirely hundreds of thousands of lives could be lost and some of California's most glamorous cities and communities could be lost forever what if imagine waking up one morning to find out the scientists have just announced that the San Andrea's fault the famous fault line running through California is on the brink of something massive it's a bit of a chilling thought isn't it let's start by considering the human toll of a major earthquake along the San Andrea's fault California is home to millions of people from buslink cities like Los Angeles and San Francisco to quiet towns nestled in the mountains if a significant earthquake were to strike the impact on human lives could be devastating buildings could collapse roads could buckle and infrastructure could be severely damaged additionally lives could be lost families torn apart and communities left reing in the aftermath but here's the thing it's not just lives at stake it's also the infrastructure and economy of California think about all the buildings Bridges and highways crisscrossing the state they're essential for everyday life from commuting to work to getting groceries at the store a major earthquake could wreak havoc on this infrastructure disrupting Transportation communication and utilities Not only would it take time and resources to repair the damage but it could also have long- lasting economic repercussions impacting businesses jobs and livelihoods ensuring Public Safety and coordinating emergency response efforts would be Paramount in the event of a major earthquake along the San Andreas fall First Responders would be tasked with rescuing survivors providing Medical Care and maintaining Law and Order amidst chaos and confusion however the sheer scale of the disaster could overwhelm existing resources and infrastructure posing significant challenges to effective emergency response adequate planning coordination and resources would be essential to mitigate the impact and save lives let's also not forget about the environmental impact of a major earthquake along the San Andreas Fault the shaking and ground displacement could trigger landslides liquefication and soil erosion altering the landscape and affecting ecosystems Additionally the release of builtup pressure along the fault could lead to secondary hazards such as tsunamis or aftershocks further exacerbating the environmental impact and complicating recovery efforts protecting the environment and mitigating ecological damage would be crucial considerations in the aftermath of such an event beyond the physical and economic consequences a major earthquake along the San Andrea's fault would also test the social and psychological resilience of Californians fear anxiety and Trauma could linger long after the ground stop shaking affecting mental health and well-being so what are your thoughts on all of this make sure you let us know in the comment section down below and make sure to like the video thanks for watching we'll see you next time