Preparing for an earthquake during a pandemic
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 …
Baja quakes highlight seismic risk in northern Mexico
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? …
The Great Quake Debate: an interview with seismologist and author Susan Hough
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) …
Seismic sensors on the ground record auroras in the sky
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: …
Rural areas may suffer disproportionately in quakes
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., …
Ground vibrations in the time of coronavirus
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 …
Rapid climate change caused Las Vegas fault to shake
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 …
Salton Sea Swarm quiets down
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.
Magnitude-5.1 earthquake rattles southeastern U.S.
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 …
Some tectonic plates ‘wobble’ before major earthquakes
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, …
Fault geometry plays a role in San Andreas ruptures
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) …
Does Alaska’s magnitude-7.8 Simeonof earthquake finally close a seismic gap?
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, …
Hydrated oceanic crust supports benign plate movement at subduction zones
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. …
Ancient rock structures guided rupture pathway in Australian quake
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 …
Ridgecrest earthquakes could cause a San Andreas chain reaction
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 …
Crowdsourcing Earthquake Early Warning Systems
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: …
Subducting plate angle dictates tsunami threat during large earthquakes
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 …
Tree rings and statistics team up to date earthquakes
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. …
Imaging from 22,000 small earthquakes reveals fault zone intricacies
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 …
Magnitude-5.9 quake is the latest and largest in Tokyo seismic swarm
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 …
El temblor de la Crucecita demuestra el riesgo a la ocurrencia de Terremotos en México
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 …
La Crucecita earthquake illustrates quake risk in México
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 …
Don’t panic, prepare! Delhi earthquakes remind citizens of risk
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, …
Magnitude-5.9 quake strikes the eastern end of the North Anatolian Fault
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 …
Five Puget Sound cities likely to feel strong shaking in a megaquake
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 — …
Challenges of earthquake early warning
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 …
Fiber-optic cables help track soil properties, liquefaction potential
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 …
Implications of the Tonopah magnitude-6.5 earthquake for worldwide seismic hazard assessment
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 …
Magnitude-6.5 earthquake rattles Nevada and California
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 …
Seismic hazard increased following 2019 Ridgecrest event
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 …
Volcanic lightning helps aviators avoid hazardous ash
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, …
Pandemic lockdown sensitizes New Delhi to earthquake risk
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 …
Dual disaster planning, communication and reason for hope: a discussion with professor Sam Montano
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, …
Opinion: Volcano observatories reduce risk around the globe. Here’s how we can support them
By: Jacob B. Lowenstern, Ph.D. and John W. Ewert, U.S. Geological Survey Cascades Volcano Observatory Volcano observatories are a critical tool for governments to reduce the impacts of volcanic …
Southern California jolted by moderate but intense quake
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 …
万一大流行期间自然灾害来袭怎么办？
英文链接 英文作者：John C. Mutter博士 哥伦比亚大学地球与环境科学教授以及国际与公共事务教授 英文发表时间：2020年4月1日 翻译：google translate (谷歌翻译) 后期修改: 彭志刚（Zhigang Peng）博士 佐治亚理工地球与大气系教授 考虑到地球自然灾害的发生频率，以及冠状病毒大流行的持续时间，我们几乎无法避免它们同时发生。试想，当某地的疫情已经失控时，突然又发生一次大地震或者大风暴，这时我们该怎么办呢？ 英文引用 ：Mutter, J.C., (2020), What if? What if a natural disaster strikes amid a …
Induced earthquakes can cause as much damage as tectonic quakes
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 …
Opinion: What if? What if a natural disaster strikes amid a pandemic?
By John C. Mutter, Ph.D., Professor of Earth & Environmental Sciences and Professor of International & Public Affairs, Columbia University Given the timescales of the Earth’s natural spasms, and …
Significant Idaho earthquake unlikely to cause unrest in Yellowstone
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 …
Opinion: Catastrophic earthquake, oil rig blowout, fire, storm or pandemic: Thinking about the unthinkable
by John C. Mutter, Ph.D., Professor of Earth & Environmental Sciences and Professor of International & Public Affairs, Columbia University After a catastrophe, whether earthquake or pandemic or anything …
Slow moving fault pieces may limit large Himalayan quakes
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. …
Earthquake strikes Utah amid COVID-19 pandemic
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 …
Faults slip slowly in Cascadia
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 …
Taal’s eruption illuminates volcanic lightning for scientists
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 …
Shaking on Mars Results in Good Vibrations On Earth
By Tiegan Hobbs, Ph.D., Postdoctoral Seismic Risk Scientist, Temblor (@THobbsGeo) After a year of operating, the largest marsquakes recorded by NASA’s InSight Lander are associated with a nearby volcanic province: …
Strong earthquakes on Turkey-Iran border trigger scientific cooperation
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 …
A new way to find old earthquakes uses organic molecules
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 …
Opinion: Will Oregon’s legislature choose resiliency?
By Douglas Toomey, Ph.D., Professor, University of Oregon Despite full knowledge of the risks the Cascadia Subduction Zone poses, Oregon’s legislature has been unable to fund hazard mitigation activities. …
![In the San Francisco Bay Area, the Bay Area Rapid Transport System, or BART, will automatically brake its trains when an earthquake is detected, according to the Incorporated Research Institutions for Seismology (IRIS). Photo Credit: Pi.1415926535 [CC BY-SA 3.0]](https://static.temblor.net/wp-content/uploads/2020/02/BART-300x150.jpg)
How good is earthquake early warning?
By Elisabeth Nadin, Ph.D., Associate Professor, University of Alaska Fairbanks New research reveals that Earthquake Early Warning networks provide a timely warning of impending shaking more often than not. …
Recovery Underway Following Damaging 24 January 2020 Elazığ Earthquake in Eastern Turkey
Haluk Eyidoğan, Ph.D., Professor of Seismology, Istanbul Technical University Tiegan Hobbs, Ph.D., Postdoctoral Seismic Risk Scientist, Temblor (@THobbsGeo) A destructive magnitude-6.8 earthquake in Turkey leaves thousands homeless. Preceded by foreshocks …
More unrest in the Caribbean as Jamaica is struck by a magnitude 7.7 earthquake
By Tiegan E. Hobbs, Ph.D., Postdoctoral Seismic Risk Scientist, Temblor (@THobbsGeo) A large earthquake in the Caribbean Sea, unrelated to the recent Puerto Rico earthquake, caused sinkholes and liquefaction. Despite …
Response and initial scientific findings from the southwestern Puerto Rico 2020 Seismic Sequence
By Alberto M López, Ph.D., K. Stephen Hughes, Ph.D. and Thomas R. Hudgins, Department of Geology, University of Puerto Rico – Mayaguez Campus Elizabeth Vanacore, Ph.D. and Gisela Báez-Sánchez, B.S., …
InSAR shows massive ground deformation around the erupting Taal Volcano
By Alka Tripathy-Lang, Ph.D. (@DrAlkaTrip) Since Taal began erupting last week, satellite images show surface movement around the volcano. Such rainbow imagery has flummoxed Twitter users. Citation: Alka …
Philippine volcano Taal erupts with a fury of earthquakes and ash
Taal Volcano, known for its picturesque crater lake, erupted suddenly on Sunday, Jan. 12, 2020, forcing evacuations of nearby villages.
Past meets present to help future seismic hazard forecasts in San Diego
By Alka Tripathy-Lang, Ph.D. (@DrAlkaTrip) Urbanization obscures a complex fault zone on which downtown San Diego sits, but decades-old geotechnical studies reveal the faults. Citation: Alka Tripathy-Lang (2020), …
La secuencia sísmica del invierno 2019-2020 en Puerto Rico que ha mantenido a la población en alerta
Alberto M. López, K. Stephen Hughes, and Elizabeth Vanacore Department of Geology, University of Puerto Rico – Mayagüez Puerto Rico Seismic Network, University of Puerto Rico – Mayagüez Citation: López, …
Puerto Rico’s Winter 2019-2020 Seismic Sequence Leaves the Island On Edge
Alberto M. López, K. Stephen Hughes, and Elizabeth Vanacore Department of Geology, University of Puerto Rico – Mayagüez Puerto Rico Seismic Network, University of Puerto Rico – Mayagüez Citation: López, …
New year, new California quakes
By Alka Tripathy-Lang, Ph.D. (@DrAlkaTrip) On Wednesday night, two small earthquakes welcomed California into the next decade. Citation: Alka Tripathy-Lang (2020), New year, new California quakes, Temblor, http://doi.org/10.32858/temblor.063 …
Triumphs, Conundrums, and Debates in Earthquake Forecasting and Seismic Hazards
By Ross S. Stein, Ph.D., Temblor CEO Citation: Ross S. Stein (2019), Triumphs, Conundrums, and Debates in Earthquake Forecasting and Seismic Hazards, Temblor, http://doi.org/10.32858/temblor.062 At the American Geophysical …
Largest Colombian crustal earthquake in 20 years strikes on Christmas Eve
Evacuations in Bogotá and the suspension of transportation systems followed a magnitude-6.2 earthquake, which struck on or near where the North Andean Block grinds against South American Plate. The mainshock was followed just 15 minutes later by a magnitude-5.7 aftershock. Further large aftershocks remain a possibility
Can scientists forecast human-induced earthquakes?
Aiming to make energy production safer, scientists developed a new model for forecasting earthquakes caused by oil and gas operations in the central U.S.
Four large quakes in two months jolt southern Philippines
By Alka Tripathy-Lang, Ph.D. (@DrAlkaTrip) In the past two months, four quakes between magnitude-6.4 to -6.8 ruptured southwest of Mount Apo, a quiet stratovolcano near Davao City, in the …
Gorkha aftershocks reveal seismic hazard in Nepal
by Jennifer Schmidt, Ph.D. (@DrJenGEO) Researchers used seismic signals from 8,000 earthquakes after the Gorkha quake in 2015 to image the fault structure beneath Nepal. They found a system of …
Albania earthquake strikes highest-hazard zone in the Balkans, devastating nearby towns
As of today, some 24 people are dead and 650 injured, and many more are unaccounted for in collapsed concrete buildings on the coastal plains surrounding the epicenter. The quake likely struck on a ‘blind thrust fault’ that does not reach the Earth’s surface but had nevertheless been previously identified by geologists.
Can science tell when a large earthquake will be followed by an even larger one?
Realtime aftershock statistics may be able to identify whether an even larger event is likely to follow, the authors of a new study argue. Additional prospective testing and more strategic public communication will be needed prior to deployment
California Earthquake Early Warning tested by moderate Bay Area earthquakes
Warnings were issued for the magnitude-4.5 and magnitude-4.7 quakes 5-6 seconds after they ruptured via ShakeAlert, and alerts reached beta testers of the MyShake app about 2 seconds later. While important progress, these intrinsic delays mean that those who experienced strong shaking received no warning. Alert delays may be longer as the number of alert recipients grows.
Opinion: Fate and denial: The Fukushima reactor 3, and the L’Aquila earthquake 7
The recent acquittal of the TEPCO executives in the Fukushima power plant tragedy hearkens back to the trial of the Italian seismologists who were charged with negligence after the L’Aquila, Italy, earthquakes. Both events raise the question: How much do you prepare for the most dreadful disasters, which result from truly large or rare paroxysms of the Earth?
Forecasting aftershocks: Back to square one after a Deep Learning anticlimax
A 2018 study published in Nature by Phoebe DeVries and her colleagues at Harvard and Google claimed that Deep Learning was able to predict the locations of aftershocks with accuracies far greater than Coulomb stress transfer could achieve
Over 66 million people participate in international ShakeOut; prompts evaluation of personal preparedness
Tiegan Hobbs, Ph.D., Postdoctoral Seismic Risk Scientist, Temblor @THobbsGeo Across the planet, people dropped under their tables at 10:17am on 10/17 to practice what to do in the event of …
Holding a mirror to the Loma Prieta earthquake 30 years later
17 Oct 2019 marks the 30th anniversary of the Loma Prieta earthquake, the Bay Area “wake-up call” that revealed our weaknesses and catalyzed our preparation. But the quake has been …
Shaking in California continues: Magnitude 4.7 strikes the San Andreas Fault south of Hollister
Another earthquake with magnitude greater than 4 has struck California in less than a day. It occurred on a portion of the San Andreas Fault which is relatively quiet, but …
Magnitude 4.5 Pleasant Hill earthquake felt throughout the S.F. Bay area and into the Central Valley
Last night, nearly everyone in the greater Bay area was awakened at 10:30 pm by a Magnitude 4.5 shock near the town of Pleasant Hill, north of Walnut Creek
Earthquake size is not foretold in the first second of rupture, study finds, shortening warning times
A new comprehensive study of almost 100,000 earthquakes in Japan suggest that large or small, quakes look alike in the first 0.2 seconds
Strong earthquake strikes near the Marmara Fault, damaging 77 buildings and frightening Istanbul residents
One hospital, four schools, and nine administrative buildings are severely damaged. Some 29 schools of various degrees of damage were forced to close, at least temporarily.
Could the 26 Sept 2019 Marmara Sea earthquake trigger a much larger event closer to Istanbul?
Based on the M 5.7 aftershocks thus far, there is a 3% chance that it could trigger a magnitude-6.5 or larger shock in the next year. The M 5.7 also brought a portion of the Marmara Fault significantly closer to failure.
Secrets of a Los Angeles blind thrust fault reveal increased seismic risk
A fault lying just a few kilometers below Los Angeles is active, according to new research. The work suggests previous examinations of so-called blind-thrust faults might need to be revisited …
Indonesian “Black Swan” quake: a painful reminder of last year’s M 7.5 Palu shock
Just two days shy of the one-year anniversary of the deadly earthquake and tsunami in Palu, Indonesia, a major earthquake ruptured beneath the nearby island of Maluku on the morning of Thursday, September 26. Local agencies are reporting 20 dead and 2,000 displaced in the wake of this M 6.5 earthquake.
Ridgecrest earthquake shut down cross-fault aftershocks
The Magnitude 7.1 earthquake abruptly halted aftershocks on the M 6.4 cross fault. It also produced a far-flung aftershock sequence that touched the San Andreas, but refused to cross the Garlock Fault.
August 1, 2019, magnitude-6.8 Chile earthquake reveals stress is building on the megathrust
Tiegan Hobbs, Ph.D., Postdoctoral Seismic Risk Scientist, Temblor (@THobbsGeo) Sandwiched in the neighborhood of the 1960 M=9.5, 2010 M=8.8, 2015 M=8.3 and 1985 M=7.8 earthquakes, a M=6.8 earthquake went virtually unreported …
Lasers speed up seismic damage assessments
Engineers may have found a way to measure displacement between floors of multistory buildings cheaply, accurately and in real-time, paving the way for quick analysis of the stability of critical infrastructure (e.g. hospitals, airports, water treatment plants) in the event of an earthquake.
The Ridgecrest earthquakes: Torn ground, nested foreshocks, Garlock shocks, and Temblor’s forecast
A new image of the ground deformation, a rich and enigmatic foreshock sequence, aftershock trends we can explain, and others that are more elusive. This is also the time see how Temblor app’s hazard forecast for Ridgecrest fared.
M 7.1 SoCal earthquake triggers aftershocks up to 100 mi away: What’s next?
The 50-km-long rupture has triggered widely dispersed aftershocks. However, almost none of these struck on the faults that the M 7.1 brought closer to failure: The major Garlock Fault; or the Blackwater, Panamint Valley, or Sierra Nevada Faults.
Magnitude 7.1 earthquake rips northwest from the M6.4 just 34 hours later
Ross S. Stein, Ph.D., Tiegan Hobbs, Ph.D., Chris Rollins, Ph.D., Geoffrey Ely, Ph.D., Volkan Sevilgen, M.Sc., and Shinji Toda, Ph.D. The M 6.4 earthquake loaded the site where the …
Earthquake Just North of Cascadia is Felt Along Canada’s West Coast
While it wasn’t the ‘Big One’, activity near the Revere-Dellwood Fault at the northern end of the Cascadia Subduction Zone is a reminder to Canadians to be prepared for shaking.
Earthquake early warning system challenged by the largest SoCal shock in 20 years
Tiegan Hobbs, Ph.D., Postdoctoral Seismic Risk Scientist, Temblor (@THobbsGeo) Chris Rollins, Ph.D., Postdoctoral Researcher, Michigan State University Citation: Hobbs, T.E. and Rollins, C., (2019), Earthquake early warning system challenged …
Southern California M 6.4 earthquake stressed by two large historic ruptures
The site of the 4th of July shock was stressed by the great 1872 Owens Valley quake and the 1992 Landers quake. Their overlapping stress lobes may have raised the stakes for this region.
Earthquake rumbles the gates of Rome
On June 23, a Mw=3.6 earthquake struck Colonna, Italy, southeast of Rome. Despite initial fears that it was yet another large quake near the central Apennines, it struck instead nearby the Alban Hills volcanic complex and the source of the famed Tivoli marble.
Opinion: Oregon legislature turns its back on tsunamis
While Japan is moving entire towns out of the tsunami zone in the wake of the 2011 Tohoku disaster, Oregon is doing the opposite, trading public safety for developer profits.
The first Marsquake is recorded
Mars InSight Lander: Marsquakes, Breakthroughs, and Breakdowns
Damaging aftershock hits Japan after 55 years
Could the 2019 M=6.4 Yamagata-Oki, Japan, earthquake be an aftershock of an M=7.5 event that struck in 1964
Can the size of a large earthquake be foretold just 10 seconds after it starts?
Previous research suggests that not until halfway through the rupture—90 seconds for an M=9 shock—can one predict its magnitude, but new findings could bring this down to 10-15 sec, which would greatly extend and enhance Earthquake Early Warnings.
Identificata la faglia responsabile del terremoto di Messina del 1908
Nel 1908 un terremoto di magnitudo 7.1 colpì la città di Messina. Il terremoto e successivo tsunami devastarono l’abitato, uccidendo più di 75.000 persone.
Fault responsible for the 1908 Messina earthquake identified
This study has shown that it is better to try and link historical earthquakes to studied and mapped active faults, and therefore to use this information when calculating the seismic hazard posed to a region.
Seismic swarm in progress in Southern California
The mysterious ‘Fontana Trend’ lit up in shallow and widely felt shocks during the past week, putting residents on edge. The swarm lies near the junction of the major Sierra Madre and San Jacinto Faults.
Osa Peninsula, Costa Rica: A unique opportunity to drill and instrument the seismogenic zone of large megathrust earthquakes
We welcome inquiries from scientists and institutions for such an ambitious yet discounted project. Resources from ICDP, national funding agencies, and potentially other foundations could be leveraged to take advantage of this unique tectonic and temporal opportunity.
Terremoto en El Salvador: Un Evento Moderado en un Área de Riesgo Sísmico Extremo
Debido a su ubicación costa afuera y una profundidad moderada, el temblor del jueves provocó pocos daños. Pero varios indicios sugieren que la suerte de El Salvador no durará por mucho más. Este evento también resalta el creciente número de terremotos extensionales grandes: una tendencia global con implicaciones de peligro importantes.
El Salvador Earthquake: A Moderate Event in An Area of Extreme Seismic Risk
Because of its offshore location and moderate depth, Thursday’s shock did little damage. But many indications suggest that El Salvador will not stay so lucky for long. This event also highlights the increasing number of large extensional earthquakes: a global trend with important hazard implications.
Se siente intense terremoto en Perú a lo largo de Sudamérica
Un fuerte terremoto de Mw 8.0 sacudió a Perú a las 2:41 am hora local este domingo 26 de mayo de 2019, desde un epicentro dentro de la Reserva Nacional de Pacaya-Samiria en la selva tropical del Amazonas.
Deep earthquake in Peru is felt along the length of South America: More to follow?
A magnitude-8.0 quake shook deep below the Amazon Rainforest in Peru, causing extensive liquefaction and shaking from Colombia to Chile.
Large Earthquake in Papua New Guinea re-ruptures major fault in just 19 years: More to follow?
A magnitude-7.5 quake broke the same fault that produced a magnitude-8.0 quake in 2000, an extraordinarily short recurrence time that also broke all our rules