Category: Temblor

Researchers used supercomputers to create millennia of simulated earthquakes in Southern California, then studied what hazard these quakes might create.   By Lauren Milideo, Ph.D., science writer (@lwritesscience)   Citation: …

A recent study shows that seismic hazard analyses can be improved by connecting more faults in an earthquake forecasting model.   By Jeng Hann Chong, Cal State University Northridge   …

A preliminary analysis shows that the fault that slipped in December’s destructive magnitude-6.4 Petrinja earthquake slipped about 10 feet (three meters).   By Athanassios Ganas, National Observatory of Athens, Institute …

Recent lab experiments show that flashes of light seen during earthquakes come from rocks that fracture during landslides caused by shaking ground.   By Melissa L. Weber, science writer (@Melwriter) …

Un terremoto de magnitud-6.4 ocurrió cerca de San Juan, Argentina esta semana, pocos días después de que la ciudad conmemorara un nuevo aniversario del sismo que destruyera la ciudad 77 …

A magnitude-6.4 earthquake struck near San Juan, Argentina, this week, just days after the city commemorated a destructive earthquake three quarters of a century earlier.   By Carlos Costa, Ph.D., …

Researchers show how a range of fault slip angles explains the observed continuum of earthquake rupture speeds, even those thought forbidden by classic theory.   By Mariah C. Hoskins, Ph.D., …

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 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 …

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 …

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 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 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, …

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) …

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 …

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. …

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.   …

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 …

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 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? …

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)   …

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: …

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., …

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.

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 …

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, …

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, …

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 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 …

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: …

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 …

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, …

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 …

By: Ian Stone, Ph.D. candidate, University of Washington (@NoisyRocks)   Cascadia has experienced major earthquakes in the past. Should another occur today, the region’s cities would feel intense shaking — …

By: Miguel Neves, Ph.D. Candidate, Georgia Institute of Technology (@Waves2Miguel)   A new study examines the challenges of earthquake early warning systems, such as latency, and how to improve the …

By: Shi En Kim (@goes_by_kim)   Researchers repurpose underground fiber-optic cables for measuring soil properties in urban areas, which helps scientists determine how the soils — and thus the buildings …

By: Ross S. Stein, Ph.D. (Temblor, Inc., CEO) Shinji Toda, Ph.D. (International Research Institute for Disaster Science, Tohoku University) Volkan Sevilgen, M.Sc. (Temblor, Inc., CTO)   The magnitude-6.5 quake provides …

By Alka Tripathy-Lang, Ph.D (@DrAlkaTrip)   A shallow earthquake struck near the California-Nevada border in the early morning hours on May 15, 2020, waking people as far away as the …

By: Christian Fogerty, Science Writer (@ChristianFoger1)   Seismologists used a recently developed model to forecast aftershocks following the recent Ridgecrest earthquake sequence. Their findings revealed a short-term increase in seismic …

By Alka Tripathy-Lang, Ph.D. (@DrAlkaTrip)   A remote Alaskan volcano erupted for nine months, repeatedly disrupting aviation traffic. How can lightning help minimize ash hazards for aircraft?   Citation Tripathy-Lang, …

By: Ramesh P. Singh, Ph.D., School of Life and Environmental Sciences, Chapman University   Efficient energy transfer from the epicenter of Sunday’s magnitude-3.8 quake northeast of New Delhi, along with …

By Tiegan Hobbs, Ph.D., Postdoctoral Seismic Risk Scientist, Temblor (@THobbsGeo) Sam Montano, professor of emergency management and disaster science, talks about COVID19 and what recovery might look like. Citation: Hobbs, …

By: Deborah Kilb, Ph.D., Project Scientist, Scripps Institution of Oceanography (@Kinect_with_Sci), and Frank Vernon, Ph.D., Researcher, Scripps Institution of Oceanography   Over the last 20 years, the Anza area has …

By Laura Fattaruso, M.S., Ph.D. Candidate, UMass Amherst (@labtalk_laura)   A recent study finds that ground motions from earthquakes induced by oil and gas operations are similar to those produced …

By Tiegan Hobbs, Ph.D., Postdoctoral Seismic Risk Scientist, Temblor (@THobbsGeo) Shinji Toda, Ph.D., IRIDeS, Tohoku University A magnitude 6.5 earthquake hit a remote region of Idaho on March 31. Despite …

By Alka Tripathy-Lang, Ph.D. (@DrAlkaTrip)   The latest modeling shows that the interface between India and Eurasia may be segmented into pieces that can host earthquakes, and pieces that cannot. …

By Tiegan Hobbs, Ph.D., Postdoctoral Seismic Risk Scientist, Temblor (@THobbsGeo) As residents prepared for a pandemic, a magnitude-5.7 quake shook Salt Lake City, causing a chemical spill in the nearby …

By Noel Bartlow, Ph.D., Assistant Researcher, Berkeley Seismology Laboratory   The Cascadia Subduction Zone has occasional large earthquakes and frequent slow-slip events. A new study quantifies how these slow-slip events …

By Alka Tripathy-Lang, Ph.D. (@DrAlkaTrip)   Temblor talks to scientists Alexa van Eaton and Chris Schultz about the science behind bursts of lightning that lit up social media during Taal’s …

By Elisabeth Nadin, Ph.D., Associate Professor, University of Alaska Fairbanks, U.S. Haluk Eyidoğan, Ph.D., Professor of Seismology, Istanbul Technical University, Turkey Ali Moradi, Ph.D., Director of Iranian Seismological Center and …

By Laura Fattaruso, M.S., Ph.D. Candidate, UMass Amherst (@labtalk_laura)   A new study uses organic biomarkers to detect heat produced during large earthquakes. Scientists found several faults off the coast …