Jérôme OLLIER’s Post

A catastrophic earthquake and tsunami are anticipated for the Pacific Northwest coast, stemming from the Cascadia Subduction Zone. This 700-mile fault, stretching from Northern California to Vancouver Island, could trigger a 9.0 magnitude earthquake similar to Japan's 2011 disaster. Recent research has revealed the fault is divided into several segments, each with unique geological properties, with the segment off Washington's coast posing the greatest risk. Despite the known dangers, infrastructure built before 2005 was not designed to withstand such an earthquake, and tsunami building codes were only implemented in 2016. The geological record indicates these mega earthquakes and tsunamis occur approximately every 500 years, with the next one expected within the next 200 years. The preparedness of the Pacific Northwest is inadequate, with many bridges, buildings, and critical facilities in vulnerable locations. Experts like Corina Allen from the Washington Geological Survey and Yumei Wang from Portland State University highlight the pressing need for retrofitting and building vertical evacuation structures. Currently, only three such structures exist in the region, with four more planned, though at least 50 are needed in Washington alone. Despite the potential for severe consequences, investment in necessary preparations is slow, hindered by the uncertain timing of the next event and the substantial costs involved. Seismologist Diego Melgar emphasizes that comprehensive preparations are a long-term effort that may not yield immediate benefits but are crucial for future generations. Ensuring safety involves building codes, early warning systems, and accessible evacuation zones, but achieving this requires significant financial and societal commitment . --- Sources: 1. Diego Melgar, University of Oregon 2. Corina Allen, Washington Geological Survey 3. Yumei Wang, Portland State University 4. CNN. "The Worst Airports in the U.S. for Connecting Flights"

Did you know a single day in 2004 reshaped global disaster preparedness forever? Here’s the story of the Indian Ocean tsunami and the lessons it taught the world. 📅 December 26, 2004 Indian Ocean Earthquake & Tsunami: Magnitude 9.1 earthquake, originating off the Sumatran coast. It was the third largest earthquake since 1900. The quake occurred 30 km below the ocean floor in the Sunda Trench, causing massive devastation. 🌍 Impact: 1️⃣ Felt across Indonesia, Bangladesh, India, Malaysia, Maldives, Myanmar, Singapore, Sri Lanka, and Thailand. 2️⃣ Killed 227,000+ people and displaced 1.7 million. 3️⃣ The tsunami impacted 17 countries along the Indian Ocean. 🌊 Tsunami Reach: Tsunami's effects were unprecedented for such a wide region. Severe damage and fatalities occurred in Northern Sumatra and Andaman & Nicobar Islands. 🌐 Global Awareness & Lessons: 4️⃣ Importance of disaster preparedness highlighted. 5️⃣ The 2004 tsunami served as a reminder of global vulnerability to natural hazards. 🔬 Scientific Advancements Post-2004: 6️⃣ Indian Tsunami Early Warning Centre (ITEWC), established in 2007, provides real-time monitoring using seismological stations and ocean sensors. 7️⃣ India is the fifth country globally with such a warning system. 8️⃣ Tsunami research led to important developments in tsunami geology and earthquake monitoring. ⚡ Research & Discoveries: 9️⃣ Excavations, like at Mahabalipuram, revealed evidence of ancient tsunamis, sparking more research in tsunami geology. 🔟 The Fukushima nuclear disaster in 2011 emphasized the need for better disaster planning for nuclear plants near coastlines. 1️⃣1️⃣ Tsunami modeling and earthquake instrumentation improved in the aftermath. 🌍 Future Risks & Preparedness: 1️⃣2️⃣ Experts warn of the Makran Coast (Iran, Pakistan) and Myanmar coasts, which could cause future tsunamis, affecting India's western coast and cities like Mumbai. 1️⃣3️⃣ Seismic research continues to study slow-slip events and pre-seismic movements for early detection of earthquakes. 🔍 Conclusion: The 2004 tsunami was a turning point in earthquake and tsunami research, significantly influencing scientific understanding of seismic hazards. This research has shaped modern tsunami warning systems and disaster preparedness worldwide.

Palawan Earthquakes: Rethinking Seismic Stability and Disaster Preparedness Recent earthquakes in Palawan, an island historically considered seismically stable, have prompted experts to call for a reevaluation of the region’s earthquake risks. The Philippine Institute of Volcanology and Seismology (PHIVOLCS) released a study urging for robust disaster preparedness measures, including reassessing potential earthquake sources and implementing stricter safety protocols for critical infrastructure projects. #PalawanEarthquakes #SeismicStability #DisasterPreparedness #PHIVOLCS #EarthquakeFaults #TsunamiRisk #GeologicHazards #InfrastructureSafety #PublicAwareness https://lnkd.in/gw8UKhyA

New Post: Japan issues first-ever ‘megaquake’ advisory, leaving citizens scared, confused - https://lnkd.in/gz9tei7K, one of the most earthquake-prone nations on earth, issued its first-ever "megaquake advisory" last week after a powerful quake struck off the southeastern coast of the southern main island of Kyushu.The magnitude 7.1 quake caused no deaths or severe damage but the advisory has led to widespread confusion and a lingering sense of worry — in a country well accustomed to regular quakes — about when the next big one will hit.The Associated Press explains what the advisory means, what people are being told to do, and what could happen if a massive quake hits Japan.7.1 MAGNITUDE EARTHQUAKE STRIKES OFF JAPAN'S COAST, TSUNAMI ADVISORY ISSUEDThe Japan Meteorological Agency issued the advisory after concluding that the magnitude 7.1 quake that struck on Aug. 8 on the western edge of the Nankai Trough increased the likelihood of another big one.There is a 70-80% chance of a magnitude 8 or 9 quake associated with the Nankai Trough within the next 30 years, and the probability is now "higher than normal" after the latest quake, the JMA says.But that is not a prediction that a megaquake will happen at any specific time or location, says University of Tokyo seismologist Naoshi Hirata, who heads the JMA’s experts panel. He urged people to remain cautious and prepared.The Nankai Trough is an undersea trench that runs from Hyuganada, in the waters just off the southeastern coast of Kyushu, to Suruga Bay in central Japan. It spans about 500 miles along the Pacific coast.The Philippine Sea Plate there slowly pulls down on the Eurasian Plate and causes it to occasionally snap back, an action that could lead to a megaquake and tsunami, JMA says.The last Nankai Trough quake off Shikoku in 1946 recorded a preliminary magnitude of 8.0 and killed more than 1,300 people.In 2013, a government disaster prevention team said a magnitude 9.1 Nankai Trough quake could generate a tsunami exceeding 33 feet within minutes, killing as many as 323,000 people, destroying more than 2 million buildings and causing economic damage of more than $1.5 trillion to large swaths of Japan’s Pacific coast.As a result of the "megaquake advisory," Japanese Prime Minister Fumio Kishida canceled his planned Aug. 9-12 trip to Central Asia and announced he would lead the government response and ensure preventive measures and communication with the public.The Fire and Disaster Management Agency instructed 707 municipalities seen as at risk from a Nankai Trough quake to review their response measures and evacuation plans.Experts and officials have urged people to stay calm and carry on their daily social and economic activities while also securing emergency food and water and discussing evacuation plans with family members.In a reassuring note on Monday, JMA experts said they have so far

On September 24, a magnitude 5.8 earthquake struck near Torishima island, prompting the Japan Meteorological Agency (JMA) to issue an unprecedented advance warning for a potential tsunami. This proactive measure was attributed to technological advancements and the expertise of JMA staff, who emphasized that human judgment is crucial in decision-making, beyond what artificial intelligence can provide. Previous earthquakes of similar magnitude around Torishima have historically led to tsunamis, observed in 1984, 1996, 2006, 2015, and 2018. However, linking these events to nearby undersea volcanic activity has posed challenges for the JMA. Unlike in the past, when warnings were issued post-event, the JMA has focused on studying moderate earthquakes capable of generating tsunamis, as most tsunamis are usually linked to larger quakes. Just six minutes after the earthquake, the JMA issued a tsunami advisory. Tsunami waves, with a peak of 70 cm recorded on Hachijojima island, affirmed the need for timely alerts, as tsunamis can arrive rapidly. The agency uses a database of 100,000 tsunami impact simulations, expanded with data from the Torishima region. On the day of the quake, JMA staff analyzed seismic waveforms against historical data to guide their warnings. The complexity of offshore tsunami prediction, aggravated by limited observation infrastructure, underscores the importance of skilled human oversight. With World Tsunami Awareness Day approaching on November 5, the JMA highlighted the need for public trust in its warning systems and urged action even in the absence of visible tremors. #AsiaRisk #NaturalDisasters #Japan Get a full accounting of the security situation in Asia by subscribing to Security Asia. Subscribe now--free of charge--at https://lnkd.in/g7Cs8Gkf https://lnkd.in/gVea2UpU

What’s Shaking Alaska?! Welcome to your seismic update from across the state. Over the past week, we recorded about 420 seismic events, three of which were reported as felt. The largest event was a magnitude 6.0 earthquake on the evening of July 19th. While this is a significant earthquake, it occurred in the sparsely populated western Aleutians, and at a depth of 16 miles, so there was only 1 report of it being felt. We are in the midst of our summer field season! That means maintaining and repairing our seismic stations, which are designed to withstand much of what Alaska throws at them. Many of our 254 stations are in remote parts of the state, so they are powered by batteries and solar panels. Thus, battery swaps are a key part of our summer work. Each site needs one or two dozen heavy-duty batteries, similar to a car battery. The main types of batteries we use are rechargeable, powered by solar panels. We transport the batteries to the site by trucks, planes, and helicopters, but the last step always involves carrying each 55-65 pound battery by hand and installing it in the hut. The hut power systems and solar panels are designed to withstand bear and mountain goat attacks, strong winds, heavy snow loads, and lack of sunlight in winter. Each site gets a new set of batteries about every 10 years. The resilience of our seismic network depends on a reliable source powering each station through Alaska’s extreme conditions. Learn more in our webstory https://lnkd.in/gfGx5EkW. Staying safe means being aware and prepared. Learn more at earthquake.alaska.edu, or on social media at akearthquake. For detailed seismicity reports, visit the Earthquakes tab on our website.

Japan - The Government of Japan Japan Airlines #JAPAN Japan Oil, Gas and Metals National Corporation (JOGMEC) Japan Wind Energy 2024 The University of Tokyo TOKYO ELECTRON LIMITED Keio University Keio University (慶應義塾大学) Japan Meteorological Agency McKinsey & Company Japan Medtronic Japan The Seismological Society of Japan Earthquake Engineering Research Centre (EERC) The Japanese-German Energy Partnership Team Fast Offer International | Work in Japan🇯🇵 Seismological Society of America Swiss Seismological Service (SED) at ETH Zurich Seismology Research Centre Caltech Seismological Laboratory Earth Surface Processes and Society UCL Department of Risk and Disaster Reduction (RDR) United Nations Office for Disaster Risk Reduction (UNDRR) Natural Disaster & Emergency Management Expo (NDEM) National Disaster and Emergency Management University Tetra Tech Disaster and Emergency Management Disaster Risk Reduction Forewarn Disaster Hackathon Nepal Earthquake Engineering Research Institute ICW Group Earthquake Insurance Earthquake Resiliency SECED - Society for Earthquake and Civil Engineering Dynamics The Institute of Structural Engineering, Earthquake Engineering and Construction IT The Japan Times Japan quakes on 1st & 15th December 2024 This post is specifically for Japan in general and specifically for Japan Seismology Institute. I am aware that ,Japan is the only country who is ready to listen the new theory on Earthquake occurance and prediction . So, here by I give time in UTC for one of my potent date for the next month is December 2024. The dates are 1st & 15th December 2024 The quakes ,predicted are major ie of 6.5+ magnitude in Japan area. Epicenter location ..Japan area. Time in UTC 02.00 hrs 07.00 hrs 14.00 hrs 22.30 hrs Disclaimer This theory is not approved by any institute and that, the quakes ,at the given time may not occur.There is no guarantee of any of the quake occurring on 1st &15th. December 2024. https://lnkd.in/dzRtvB6w

Japan just had a 7.1 magnitude earthquake, triggering a Tsunami warning. Japan and its surrounding areas account for 18% of earthquakes in the world. Japan and earthquakes go hand in hand due to the country's position along the Pacific Ring of Fire, and on the convergence of four major tectonic plates - the Pacific, Philippine, Eurasian, and North American plates. The Pacific Plate, in particular, is responsible for much of Japan's seismic unrest. As the world's largest tectonic plate, it is perpetually colliding and grinding against the smaller Eurasian and North American plates under the Japanese archipelago. Compounding this precarious tectonic positioning is Japan's mountainous terrain, which is the product of ancient seismic activity. The ongoing deformation and uplift of the Japanese landmass creates inherent structural instability that is routinely shaken by tremors and temblors. Tragically, Japan's long history of deadly quakes underscores the country's unenviable status as one of the world's most earthquake-prone regions. Yet remarkably, the Japanese people have cultivated a culture of earthquake preparedness that is the envy of the world. Rigorous building codes, advanced early warning systems, and community-based disaster planning have saved countless lives. Japan's resilience in the face of these natural calamities is a testament to the country's strength of spirit and unwavering determination.

🚨Petra Alert🚨 Within the last hour, a 7.0-magnitude earthquake occurred in Northern California, approximately 30 miles off the coast of Eureka, CA. The National Weather Service (NWS) issues tsunami warnings for the United States through its Tsunami Warning Centers. In California, these warnings are disseminated by the California Governor's Office of Emergency Services (Cal OES) and local emergency management agencies. Alerts are broadcast via Wireless Emergency Alerts (WEA) to mobile devices, NOAA Weather Radio, and other public alert systems. In anticipation of any aftershocks, tremors, or additional earthquakes, we recommend hotels promptly evacuate guests and staff to locations at least 0.25 miles inland or 50 feet above sea level. If evacuation is not feasible, implement vertical evacuation by moving individuals to the upper floors of sturdy, reinforced buildings. Ensure that staff are trained to assist all guests, particularly those with mobility challenges, and communicate evacuation instructions clearly in multiple languages if necessary. Keep emergency kits accessible and remain in safe zones until authorities declare the area secure. Preparedness and swift action are crucial to ensuring safety and minimizing risks. Thank you and stay safe. https://lnkd.in/gjdq73NV