Between Los Angeles and San Francisco, the San Andreas Fault releases stress by gradual movement. Scientists calculate fault slip from offset topography and discuss seismic hazard. By Chelsea …
Researchers used a modeling approach to study the magnitudes of California’s largest historical earthquakes, finding that the 1906 San Francisco quake was magnitude-7.9. By Lauren Milideo, Ph.D., science writer …
We find that the Petrinja earthquake raised the chances of another large, damaging shock nearer to Zagreb by a factor of three, but the probability is still low, at about …
A M3.6 earthquake rattled the San Francisco Bay Area early this morning. The quake struck ~7 miles offshore and USGS data suggest that it accommodated right lateral strike slip …
A magnitude-6.4 earthquake rattled Central Croatia on Tuesday, Dec. 29. Reports of significant damage highlight vulnerable construction in the region. By: Nenad Bijelić, Ph.D., EPFL (École Polytechnique Fédérale de …
A damaging M6.4 earthquake rattled Croatia today, centered near Petrinja. It appears to have struck on a strike slip fault. This quake came a day after a M5.2 quake …
Kīlauea Volcano on the Big Island of Hawaii reawakened on Dec. 20 with a flourish, fountaining lava in its summit crater. Temblor talks with volcanologist Michael Poland about what the …
A recent study concludes that small- to moderate-sized earthquakes are greater contributors to earthquake hazard and risk than large earthquakes. By D’Maia Curry, freelance science writer Citation: Curry, …
Friday’s coverage of the American Geophysical Union (AGU) 2020 Fall Meeting focuses on preparing for cascading hazards, searching for unusual subduction zone earthquakes and helping illuminate earthquake hazard in Haiti. …
Welcome to Temblor’s coverage of the American Geophysical Union (AGU) 2020 Fall Meeting! Today (Thursday, December 10, for those keeping track), we focus on student-led research that our readers might …
A M6.1 earthquake struck Taiwan late last night off the island’s eastern coast. Shaking was felt as far away as Hong Kong. The region sits on a relatively complex …
By Sotiris Valkaniotis, Ph.D., Koronidos Str., Greece and Athanassios Ganas, Ph.D., National Observatory of Athens, Institute of Geodynamics Citation: Valkaniotis, S., and Ganas, A., 2020, Surface deformation observed in …
By: Haluk Eyidoğan, Ph.D., Professor of Seismology, İstanbul Technical University Citation: Eyidoğan, H., 2020, M5.0 quake strikes Eastern Turkey, Temblor, http://doi.org/10.32858/temblor.142 A M5.0 earthquake struck Thursday in …
Rare catastrophic events prove hard to predict, but catastrophist Gordon Woo posits a methodical way to think through just how bad future disasters might be. By Alka Tripathy-Lang, Ph.D., …
A M 6.1 earthquake struck offshore of Central Chile yesterday. The quake occurred on the edge of the rupture extent of the 2010 M 8.8 Maule earthquake. Large earthquakes …
A new method helps hospitals prepare to promptly treat the most severely injured patients right after a major earthquake. By, Elizabeth Goldbaum, Science Writer (@EFGoldbaum) Citation: Goldbaum, E, …
İzmir’de 30 Ekim depreminde birçok bina çöktü. Şehir genelinde potansiyel deprem yer hareketlerinin belirlemesinin daha iyi yapılması ve deprem şartnamesine uyum, kuvvetli deprem yer hareketlerine dayanıklı binaların tasarlanmasını sağlayacaktır. …
Several buildings in İzmir collapsed during the Oct. 30 earthquake. Code compliance with better assessments of potential ground motion throughout the city would ensure the design of buildings to withstand …
Natural hazards don’t have to become natural disasters if you properly prepare. That’s called resilience. And it’s the focus of a free year-long webinar series that starts this week. …
Multidisciplinary research on archaeological sites in Israel suggests a different fault than originally thought damaged the city in the eighth century and may rupture again. By Vanessa Vieites, science …
Researchers use precariously balanced rocks to reduce uncertainties in seismic hazard models for California’s Central Coast. By Akash Kharita, Indian Institute of Technology, Roorkee Citation: Kharita, A., 2020, …
Ege Denizi adalarından Samos, 116 yıl sonra yeniden büyük bir depremle sarsıldı. Yazar: Margarita Segou, Ph.D., Birleşik Krallık Jeoloji Kurumu Alıntı: Segou, M., 2020, Samos depreminin 48 saat …
A M3.6 quake shook the northeastern U.S. yesterday, including major cities such as Boston and New York. Although earthquakes of this magnitude are rare in this part of the …
A team of scientists puts together the whole picture on what caused the extreme magnitude and slip during the 2011 magnitude-9 Tohoku earthquake, and overturns a long-held scientific law. …
Preliminary data indicate that the fault that ruptured in the Samos earthquake slipped 6 feet (1.8 meters). By Athanassios Ganas, National Observatory of Athens, Institute of Geodynamics Panagiotis Elias, National …
Το νησί της Σάμου χτυπήθηκε από δυνατό σεισμό μετά από 116 χρόνια Δρ. Μαργαρίτα Σέγκου, Βρετανική Γεωλογική Υπηρεσία παραπομπή: Σέγκου, Μ., 2020, Το νησί της Σάμου χτυπήθηκε από …
By Miguel Neves, Ph.D. Candidate, Georgia Institute of Technology (@Waves2Miguel) A new study based on earthquakes in the Marmara Sea, Turkey, showed how a moderate earthquake initiated and suggests …
The Aegean Sea island of Samos is struck by another large earthquake after 116 years. By Margarita Segou, Ph.D., British Geological Survey Citation: Segou, M., 2020, What do …
A strong earthquake rattled Turkey and Greece today, causing significant damage and a tsunami that flooded parts of Seferihisar, Turkey, and the Greek island of Samos. By Jennifer Schmidt, …
A M 7.0 earthquake rattled Western Turkey and Eastern Greece today. The epicenter is located within the Aegean Sea, north of Samos. Reports of severe damaged in Izmir. …
M5.0 and M4.4 quakes struck near Batangas City in the Philippines this morning. The region is at risk of strong shaking according to Temblor’s hazard model. The nearby 1994 …
Last week’s magnitude-7.6 Alaska quake raises questions about the nature of aftershocks. By Elisabeth Nadin, Ph.D., Associate Professor, University of Alaska Fairbanks Citation: Nadin, E., 2020, Alaska’s double …
During large quakes, rocks can jump or shift from their initial locations. How far they traveled tells scientists how much the ground moved during rupture. By Alka Tripathy-Lang, Ph. …
Ground motions in Los Angeles Basin show up to four times greater shaking than expected from the Ridgecrest earthquake. by Laura Fattaruso, M.S., Ph.D. Candidate, UMass Amherst (@labtalk_laura) …
In the wake of the recent M7.8 and M7.6 earthquakes in Alaska, Temblor issued an earthquake forecast for the next 12 months, based on the background quake rate and …
Scientists working on the California Historical Intensity Mapping Project compare quake-shaking forecasts to measured shaking intensity, with some surprising results. By Julie Pierce Onos (@JuliePierceOnos) Citation: Pierce Onos, …
Surveys reveal how different stakeholders used aftershock forecasts following the 2016 Kaikōura earthquake in New Zealand. By D’Maia Curry, freelance science writer Citation: Curry, D., 2020, How do people …
A M7.5 quake struck off the coast of Sand Point, Alaska today, triggering a tsunami warning for much of the Aleutian Islands. The quake struck in the middle of …
As millions of people participate in earthquake drills as part of the ShakeOut, resilience experts note the importance of preparation, especially for businesses. A new resilience webinar series was announced. …
Orta Anadolu’nun (Türkiye) oldukça büyük bir bölümünü kesen hipotetik bir makaslama zonunda orta şiddette bir deprem oldu. Haluk Eyidoğan, Ph.D., Sismoloji Profesörü, İstanbul Teknik Üniversitesi Citation: Eyidoğan, H., …
A moderate quake struck on a hypothetical shear zone that cuts through a sizable portion of Central Turkey. By: Haluk Eyidoğan, Ph.D., Professor of Seismology, İstanbul Technical University …
A series of small earthquakes near the recently built Calaveras Dam replacement is a reminder of the significant seismic hazard at the new dam site. By Melissa L. …
Ross Stein tells a story of how a group of residents saved their neighborhood from the recent CZU Lightening Complex Fire in this 3.5-minute video. By Ross Stein, Ph.D., …
An earthquake swarm south of the Salton Sea fired off hundreds of quakes in the past 24 hours, including a magnitude-4.9 jolt felt as far away as San Diego. …
A vigorous seismic swarm is in progress in the Brawley Seismic Zone, a fault band that connects the Imperial Fault with the San Andreas. The Zone has a history …
The faults bounding the Himalayan range front could produce great earthquakes, similar to those which struck the Aleutian arc during the twentieth century. By Akash Kharita, Indian Institute of …
Researchers have discovered a pattern in slickenlines — scratches on fault surfaces — that can be used to determine which way a fault ruptured in a past earthquake. By …
Researchers devised a way to measure changes in ocean temperature using earthquakes. By mining historical seismic records, researchers got a glimpse of past ocean trends. By Shi En Kim …
A M5.3 quake struck Central Turkey this evening. Although the area has been relatively seismically quiet in the last century compared to other parts of the country, strong earthquakes …
A M4.5 shock rattled Southern California last night. Reports of shaking reached San Diego. The epicenter lies just a few miles from that of the damaging 1987 Whittier Narrows …
COVID-19 infection rates would rise if a large earthquake occurred during the pandemic. Researchers say that the number of resulting new cases depends on whether authorities prepare now. By …
A M4.3 quake shook western Turkey today. This event lies near the eastern tip of the 1912 M7.4 Ganos earthquake rupture area, a site perhaps brought closer to failure …
A magnitude-5.1 earthquake that recently occurred in Baja California, Mexico was felt as far as Los Angeles, California. What is the seismic risk imposed by the faults in Baja California? …
A M6.4 quake shook the island of Mindanao in the Philippines this evening. The quake struck just offshore. In December of last year, the nearby onshore M6.8 Davao del …
A M 6.3 quake struck 40 km northwest of Ovalle, Chile this evening. The strong quake came on the heels of a M 6.8 shock that occurred last week …
A shallow M 6.8 quake rocked central Chile today. Several aftershocks have followed so far. M 7.0+ quakes are common in this region, which sits above the Peru-Chile Trench, …
In the early 1900s, debate raged about Southern California’s earthquake risk. Intrigued by the adversaries, seismologist Susan Hough wrote a book about it. By Alka Tripathy-Lang, Ph.D (@DrAlkaTrip) …
Some residents in central Jamaica were jolted awake this morning when a M4.5 quake struck the Island. Several faults — mostly strike slip — cut the region and occasionally …
A recent study shows that seismometers on the ground are behaving like magnetometers that record auroral activity in Alaska. By Jeng Hann Chong, Cal State University Northridge Citation: …
A M 5.3 quake shook the Pacific coast of Costa Rica today and was felt throughout the country. The region has hosted M 7+ quakes in the recent past …
Location matters: Seismologists studying historical casualty estimates after large earthquakes suggest future rescue efforts should look for rural-area victims. By Melissa L. Weber, MA (@Melwriter) Citation: Weber, M., …
A pair of earthquakes struck offshore Sumatra today. The first, a M 6.8, was followed by a M 6.9 approximately 6 minutes later. Both quakes likely struck along the …
A M 6.6 quake struck in Samar, Philippines this morning. Some damage had been reported in nearby areas. The strike slip quake likely originated along a section of the Philippine …
The quieting of seismic noise during the coronavirus lockdown may help scientists understand Earth’s natural vibrations. By Elizabeth Goldbaum, Science Writer (@EFGoldbaum) Citation: Goldbaum, E., 2020, Ground vibrations …
A fault that lies beneath north Las Vegas has now been shown to have tectonic origins — with implications for seismic hazards in Las Vegas. New research reveals when and …
An earthquake swarm under the Salton Sea appears to be calming down after a day, but scientists continue to keep a close eye on the region.
Earthquakes are not uncommon in the East African Rift Zone, often originating, as in the case of today’s M6.0 offshore Tanzania, on a secondary branch of the rift. Shaking …
Some 26 hours after the M 4.6, the Bombay Beach seismic swarm continues. But more surprising is that much of the Brawley Seismic Zone, and parts of all the …
A series of earthquakes have struck in the Salton Sea in Southern California. Events like this have occurred four times in the last 20 years. They are all swarm-like …
Yesterday’s magnitude-5.1 quake in western North Carolina was felt throughout the southeastern U.S. Although it came as a shock, a quake of this magnitude is not unexpected. By John …
A M 5.1 earthquake rattled parts of the eastern US today. The quake struck outside of Sparta, North Carolina. Moderate magnitude quakes are not rare in this part of …
Scientists are getting new clues about seismic activity before large earthquakes along subduction zones by measuring tectonic wobbles in Japan and Chile. By Chelsea Scott, Ph.D., Assistant Research Scientist, …
Aftershocks continue off the southern shore of Puerto Rico following a M6.4 quake in January of this year. Today, a M5.1 quake struck offshore, in an area that has …
A M5.4 quake struck off shore Japan yesterday. This quake is part of a continuing swarm of M5.0+ shocks along Honshu that began earlier this year, extending from Tokyo …
Computer simulations help researchers understand the range of possible outcomes of a rupture when key details of the San Andreas Fault are still unknown. By: Shi En Kim (@goes_by_kim) …
A magnitude-7.8 quake struck near the mostly uninhabited Shumagin Islands on July 22, 2020, potentially closing a large seismic gap along the Aleutian trench. By Elisabeth Nadin, Associate Professor, …
Today’s M 4.2 quake likely struck on a ‘tear fault’ that connects portions of the 1971 San Fernando earthquake rupture. Today’s event is strike-slip, whereas the 1971 event was …
New research suggests that water-rich rocks present along subduction zone boundaries may cause these areas to ‘creep’ along without generating earthquakes. By Melanie Chan, @mellojellochan Citation: Chan, M. …
A M 7.8 quake shook the Aleutian Islands this morning. The Alaska earthquake likely occurred along the subduction interface. The Aleutian arc is no stranger to large quakes, having …
A shallow M 4.2 quake shook Cebu City, Central Visayas on July 17th. The region is at elevated risk of strong shaking, according to Temblor’s models. The M 7.1 …
A recent study finds that ancient rock structures in Australia that formed over 500 million years ago determined the pathway of a 2016 earthquake. By Helen Santoro, freelance science …
The 2019 Ridgecrest quakes stressed the Garlock Fault. If it ruptured in a large shock, it would likely trigger a San Andreas earthquake north of Los Angeles. By Ross …
A shallow magnitude-5.1 earthquake struck the Boconó Fault in Venezuela today, and was felt as far away as Caracas. This right-lateral transform fault ruptured in large, damaging earthquakes 6 …
A swarm of earthquakes has shaken central Idaho over the past month, with two M4.0 quakes striking in the past 24 hours. This region has seen large quakes in …
A M 5.1 quake struck NE Colombia tonight. This quake is likely another event in the “Bucaramanga nest,” one of the highest concentrations of intermediate depth seismicity in the …
Smartphone usage may provide a global earthquake early warning system through crowdsourced motion detection with the MyShake app. By Melissa L Weber, M.A., freelance science writer (@Melwriter) Citation: …
A deep M 6.6 quake struck north of Java today. Shaking was felt throughout the island. The quake was deep enough to lie on the megathrust. Although likely unrelated, …
Researchers link subducting plate angle to earthquake events that produce larger than normal tsunamis — helpful information for future tsunami risk awareness. By: Danielle Woodring, M.S., structural geologist/science writer …
A recent paleoseismic study used a new method to identify the timing of past earthquakes that occurred in the Monterey Bay area prior to the 1906 San Francisco earthquake. …
New high-res 3D images of a fault zone show how fluid movement causes an earthquake swarm. By Julie Pierce Onos (@JuliePierceOnos) Citation: Pierce Onos, J. 2020, Imaging from …
Six magnitude-5.0+ shocks have struck greater Tokyo since April 1st, part of a larger swarm that extends north to Hokkaido, at a rate that is about three times higher than …
Durante esta semana, un terremoto de magnitud 7.4 golpeó la costa del estado de Oaxaca, México. Al igual que eventos previos, este terremoto demuestra la existencia de un complejo sistema …
A magnitude-7.4 quake struck just offshore of Oaxaca, México this week. This and previous quakes highlight complex faulting and remind us of earthquake risk in the area. By Aaron …
A M 5.8 quake struck today near the southern end of the Owens Valley Fault Zone. Retrospectively, it appears yesterday’s nearby M 4.6 quake was a foreshock. The damaging …
Today’s M 7.4 megathrust Oaxaca Earthquake was likely promoted by the deeper 2017 M 8.2 Tehauntepec quake. Here is the forecast Temblor submitted to the Willis Research Network in …
By Alka Tripathy-Lang, Ph.D (@DrAlkaTrip) Delhi’s citizens anxiously await a bigger shock during an ongoing swarm-like earthquake sequence, though swarms rarely include a larger event. Citation Tripathy-Lang, Alka, …
The Yogyakarta region of Indonesia was shaken by a M 5.0 quake at 2:33 am local time. The deep quake struck ~75 km offshore. Parts of Java is at …
A M 4.2 quake hit near Perry, Oklahoma last night. This is not unexpected in this region. Oklahoma has experienced several M 4+ earthquakes per year, including a M …
By Ross S. Stein and Volkan Sevilgen Temblor was founded on the principle that everyone, everywhere, should be able to learn their seismic risk. For the safety and financial …
By: Haluk Eyidoğan, Ph.D., Professor of Seismology, Istanbul Technical University A moderate earthquake struck the Bingöl province in eastern Turkey on Sunday. The quake occurred at the intersection between …
