A magnitude-6.5 quake struck a remote part of Nevada today, but was felt in the San Francisco Bay area, Bakersfield, and Las Vegas. Based on its aftershocks and focal mechanism, the event probably struck on an unnamed left-lateral fault, or perhaps the Emigrant Peak Fault.
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 …
Yesterday’s M5.8 is the latest in a series of M5+ quakes to rattle greater #Tokyo since the beginning of the year. The long-term rate of M5+ quakes within 100 km …
Three widely felt earthquakes shook the Philippines today, but it’s unclear if they triggered each other. They appear to have struck on the twin subduction zones that formed the islands. …
Another quake struck beneath the Tokyo metro region just after 10 pm local time on May 4th. This quake, a M 5.6, is the latest in a swarm that has …
A M 3.3 quake rattled parts of the northern Los Angeles metro area last night. The region is at risk of strong shaking, according to Temblor’s models. Los Angeles has …
A series of M 4+ aftershocks struck this morning off shore of Puerto Rico, south of Ponce, with the largest being a M 5.3. These quakes follow the M 6.4 …
Today’s magnitude-6.6 was far enough offshore to cause no damage. But this thrust event likely struck on or just above the Hellenic Arc megathrust zone, which ruptured in AD 365 …
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, …
A M 5.0 earthquake occurred today near the town of Padangsidempuan, Indonesia. Sumatra is transected by the right-lateral Sumatran fault system. Today’s quake occurred within a tectonically complex region …
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: 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 …
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 …
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 …
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 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 …
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 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 …
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 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: …
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 …
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)
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. …
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 …
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 …
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., …
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 …
By Alka Tripathy-Lang, Ph.D. (@DrAlkaTrip) Ang Taal Volcano, na kilala sa nakamamanghang crater lake, ay biglang sumabog noong Linggo, Enero 12, 2020, napilitang lumikas ang mga kalapit na nayon. …
Taal Volcano, known for its picturesque crater lake, erupted suddenly on Sunday, Jan. 12, 2020, forcing evacuations of nearby villages.
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), …
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, …
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, …
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 …
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 …
Por Albert Leonardo Aguilar Suarez, Ph.D. candidate, Stanford University, y Ross S. Stein, Ph.D., Temblor, Inc. Evacuaciones en Bogotá y la suspensión de sistemas de transporte siguieron al sismo …
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
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.
By Alka Tripathy-Lang, Ph.D. (@DrAlkaTrip) Nitong nagdaang dalawang buwan, apat na lindol sa pagitan ng magnitude-6.4 hanggang -6.8 ang nanalasa sa timog-kanluran ng Mt. Apo, isang tahimik na stratovolcano …
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 …
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 …
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.
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
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.
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?
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
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 …
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 …
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 …
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
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
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.
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.
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 …
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.
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.
Her yıl depremlerden dolayı ortalama 1.000 kişinin hayatını kaybettiği, 2.000 kişinin yaralandığı, 7.000’den fazla binanın kullanılamaz duruma geldiği ülkemizde deprem hiçbir zaman sürpriz olmayacaktır.
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 …
Apollo 11 was the first step for humankind, and a giant leap for seismology. Landing and deploying seismic sensors on the moon required significant advances in instrumentation and shaped the study of earthquakes. Now we know that both planets host tidally triggered earthquakes.
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.
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.
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.
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 …
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.
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 …
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.
Il 23 giugno, un terremoto di magnitudo 3.6 ha avuto come epicentro la città di Colonna, a sud-est di Roma, tra il complesso vulcanico dei Colli Albani e la città di Tivoli, famosa per l’estrazione del travertino. Non si è quindi trattato di uno scuotimento dovuto a un forte terremoto nell’Appenino centrale, come inizialmente temuto.
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.
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.
Mars InSight Lander: Marsquakes, Breakthroughs, and Breakdowns
Could the 2019 M=6.4 Yamagata-Oki, Japan, earthquake be an aftershock of an M=7.5 event that struck in 1964
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.
While no one quake can invalidate an earthquake hazard model, larger-than-expected quakes on both the Tohoku and Japan Sea coasts point to inadequacies in Japan’s national seismic model.
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.
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.
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.
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.
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.
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.
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.
A magnitude-8.0 quake shook deep below the Amazon Rainforest in Peru, causing extensive liquefaction and shaking from Colombia to Chile.
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
An open invitation for researchers to use these remarkable Costa Rica quakes as a collaboration laboratory
Two deadly and damaging quakes late last month were probably unrelated to each other.
The authors claim they found dynamic triggering of tiny aftershocks up to 275 km (150 mi)
from an M=7.2 mainshock in 2010, but they have not proved their case.
While exact repeats of earthquakes are rare, if the 1906 quake did strike again, what will be our excuse for being so unprepared?
Malatya-Ovacık Fayı’nın Arguvan ilçesinin yakınında 21 Mart 2019 tarihinde oldukça sığ derinliklerde bir deprem etkinliği başlamış ve yüzlerce küçük deprem olmuştur
一つ目の不正論文では、筆者の仮説を支持する為に、断層滑り分布とそれに伴う地震の場所が阿蘇火山の方向へずらされていた。二つ目の不正論文では、震源近くの臨時観測点で観測されたとされる地震波形が、実際には筆者により捏造されたものだった。両方の論文において、調査委員と大学は論文の取り下げを勧告した。
In one case, the fault rupture and its associated seismicity had been shifted toward a volcano in support of the author’s hypothesis; in the other, seismograms from temporary near-fault stations had been manufactured. In both cases, evaluation committees and universities called for retractions.
Morfolojik ve jeolojik olarak oldukça belirgin olan Acıpayam baseninde 20 Mart 2019’da Mw=5.7 büyüklüğündeki kuvvetli bir deprem olmuş, deprem çok sayıda kırsal yapıda hasara neden olmuştur.
A new model joins two others in confirming the hazard posed by the tectonic forces that are squeezing and shearing greater LA.
India is one of the countries with the most earthquake-related deaths. Just in the past century, over 100.000 people have died due to earthquakes in the country (Bilham, 2009)
Ross S. Stein, Ph.D., Temblor, Inc. On February 3, a Magnitude 4.5 quake struck 30 mi (50 km) south of Eureka, followed in rapid succession by four more Magnitude 3+ …
La megafalla de cabalgamiento carece de grandes terremotos en la zona de subducción en esta región. ¿Qué nos dicen estos terremotos extensionales?
The swarm appears to be occurring on a right-lateral reverse fault that connects the San Andreas and Mendocino Fracture Zone with the shallow portion of the Cascadia Megathrust.
The megathrust fault lacks large subduction zone earthquakes in this region. What do these extensional earthquakes tell us?
