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 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 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 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. …
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 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.
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.
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
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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
While exact repeats of earthquakes are rare, if the 1906 quake did strike again, what will be our excuse for being so unprepared?
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)
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.
El terremoto se encuentra rodeado por recientes grandes terremotos; es incierto si uno pudiera ocurrir aquí
The earthquake is surrounded by recent great quakes; whether one could strike here is uncertain
遠田晋次（東北大学災害科学国際研究所）・スタイン ロス（テンブラー）
Japanese authorities declared the Jan 3 shock to be an independent event; we argue that it was a product of the 2016 quake, which profoundly changed the hazard.
Il “gigante buono”. “Mamma”. “Sua Maestà”. Così i Siciliani usano chiamare l’Etna, uno dei vulcani più attivi e monitorati al mondo.
In Pennisi, the statue of Saint Emidio, protector from earthquakes, collapsed.
A tensional shock in a compressional setting strongly shook Anchorage, perhaps the U.S. city best rehearsed for earthquakes
Bounce back from an earthquake with simple insurance to recover from life’s disruption.
I was living in San Francisco when the 1989 Loma Prieta earthquake occurred, and now, as part of my Neighborhood Response Group, I’ve learned important steps every household should take to prepare for disaster. Give me a call and let’s talk about what your household needs to do to get ready.
SkinnyBraces were invented specifically to fit into the limited spaces inside typical “soft story” homes or apartments. Got a skinny space? You need a SkinnyBrace.
by Amar Rahman (Principal Risk Engineer / Global Practice Leader Natural Hazards at Zurich Insurance Company Ltd)
Ruptures on either fault could strongly shake Osaka, a vibrant city of 2.7 million inhabitants.
The M=5.9 earthquake resulted in three fatalities and hundreds of injuries.
The country’s largest man-made recreational harbor sits on highly-liquefiable soil, which could be avoided in a large earthquake.
Today’s eruption at Kilauea was the most explosive event since increased activity began on May 3.
Last night’s earthquake struck on the fault most likely to rupture in a large earthquake by 2043, according to the USGS.
Last night’s earthquake struck on the fault most likely to rupture in a large earthquake by 2043, according to the USGS.
Just this week, a California report came out showing the startling effect of climate change on wildfire, and Gov. Jerry Brown issued an executive order to combat wildfires, and allocated an additional $96 million for fire protection and risk reduction.
A new study, published this month finds a large precursory gravity change over the Japanese archipelago starting a few months before the M=9.0 Tohoku earthquake.
Un nuevo estudio publicado este mes halló un enorme cambio gravitatorio preliminar a lo largo del Archipiélago Japonés que inició unos pocos meses antes del terremoto de M=9.0 en Tohoku.
Una oleada de actividad sísmica en la Gran Isla de Hawái está relacionada a la actividad volcánica asociada con el magmatismo de Kïlauea.
A flurry of earthquake activity on the Big Island of Hawai’i is related to the volcanic activity associated with Kïlauea magmatism.
May marks the unofficial start of fire season in the Western U.S.
La ciudad colombiana de Manizales, en las profundidad de los Andes, experimentó una sacudida durante el sismo de hoy, con magnitud M=5.2
What would happen if a M=7.0 Hayward Fault earthquake struck the Bay Area today?
The Calaveras is capable of a magnitude 7+ earthquake
Over $100 million in damage caused by the Montecito mudflow may be covered under fire insurance.
Scientists are worried 8 million tons of rock could come crashing down by the end of the month.
Much larger quakes are common along the Nazca Trench
Prof. Ali Moradi shares his opinions on earthquake risk and preparedness in the region.
Today’s earthquake struck along the relatively seismically inactive section of the Java Trench.
Last night’s M=4.0 earthquake was felt in Portland, and a slow-slip event began after a 22 month period of quiescence.
Yesterday’s M=6.0 earthquake struck on or just above the subducting slab.
Esta hipótesis ha generado gran controversia entre los medios de prensa, ¿Cual será la reacción dentro de la comunidad científica?
This hypothesis has caught fire with the press. How will it fare among scientists?
The two largest shocks in 40 years both struck along an active 120-km-long fault that lies 10 km from three nuclear reactors
Neither earthquakes nor buildings kill the people in this beautiful and ancient country.
The quake had special significance for me personally, as my hometown—Khanaqin—lies on the Iraqi side of the border, just 50 km southwest of the epicenter.
Los sismos en el pacifico central de Costa Rica tienden a ocurrir en pares, por lo que no es posible descartar
la ocurrencia de un sismo similar.
Costa Rican shocks tend to come in pairs, and so this might not be over
Today’s earthquake sequence struck along two borders: political and tectonic.
At 10:19 am on Thursday, the Great ShakeOut drill will take place.
Rather than fires hunting us, we should hunt them
The majority of the buildings which collapsed were old structures which should have been retrofitted or condemned.
Así que, la mayoría de los expertos recomienda ‘agacharse, cubrirse y esperar’
The fault on which the M=6.1 aftershock in Mexico struck over the weekend was significantly stressed by the M=8.1 Chiapas quake on September 7
Miyamoto International is a global earthquake structural engineering and project management company providing critical services that sustain industries and safeguard communities around the world.
One chance in 30,000 sounds small until you compare it to one in a million
Por Germán Acosta Cervantes, Traductor al Español de Temblor
For over 60 years, Crusberg Decker Insurance Services, Inc. has proudly provided risk management solutions to businesses and individuals in California and the surrounding states. Over the course of three generations, our family-run agency has expanded to five locations to better meet the needs of you, our valued clients.
We have to accept the idea that several times a year, we’ll get an alert when shaking is very light
Una pregunta persiste en todas nuestras mentes, sobre si el terremoto de M=8.1 en Chiapas, de alguna forma, desencadenó el sismo de M=7.1, doce días después y a 600 km (360 mi) de distancia.
Based on coulomb stress calculations, the two events are likely unrelated
Today’s M=7.1 earthquake was the second large magnitude to strike the country in less than two weeks
El terremoto de M=7.1 de hoy, en el sur de la Ciudad de México, resultó en un daño importante a lo
largo de la ciudad.
Today’s earthquake struck along the Hayward Fault, which has a 33% chance of rupturing in a M=6.7+ earthquake by 2043, according to the USGS.
This region in Idaho could experience up to a M=7.3 earthquake
Had last week’s earthquake been shallower or to the northwest or southeast the effects could have been catastrophic.
The USGS estimates that economic losses could exceed $1 billion
If the city of Miami takes a direct hit from Hurricane Irma, losses could reach $200 billion
Penhall is your top choice for seismic engineering and construction services for every type of seismic retrofitting
Joshua B. Kardon is a licensed structural engineer based in Berkeley, California
Is the alignment of the moon a key to unlocking when large earthquakes will occur?
