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
Repeating earthquakes discovered in Costa Rica
An open invitation for researchers to use these remarkable Costa Rica quakes as a collaboration laboratory
Two damaging tremors highlight the Philippines’ coast-to-coast earthquake problem
Two deadly and damaging quakes late last month were probably unrelated to each other.
Ten times more earthquakes now detected in Southern California
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.
The 5 worst (and 5 best) places to live in the S.F. Bay Area if the great 1906 earthquake recurred today
While exact repeats of earthquakes are rare, if the 1906 quake did strike again, what will be our excuse for being so unprepared?
Scientific fraud announced in two studies of the 2016 M=7.0 Kumamoto, Japan, earthquake
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.
Three independent models converge on the high earthquake potential of Los Angeles
A new model joins two others in confirming the hazard posed by the tectonic forces that are squeezing and shearing greater LA.
Seismic warning to India: A shock strikes just north of Delhi
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)
Mexico-Guatemala earthquake, felt by millions, likely triggered by the 2017 megaquake
The megathrust fault lacks large subduction zone earthquakes in this region. What do these extensional earthquakes tell us?
Magnitude 5.7 earthquake strikes in a long-lived gap in great earthquakes
The earthquake is surrounded by recent great quakes; whether one could strike here is uncertain
Strong shaking from central coastal Chile earthquake: What does it reveal about the next megathrust shock?
The Coquimbo region has an unusual, increasing seismicity that may be preparing the area for a very large earthquake – Prof. Raul Madariaga
Seismic swarm hits Hayward Fault: What does it portend?
One may think that these quakes are small, so why do they matter? Why should I care?
What if the Northridge earthquake had struck today, on its 25th anniversary, during the U.S. government shutdown?
The partial shutdown could make things worse
Quake Connectivity: 3 January 2019 M=5.1 Japan shock was promoted by the April 2016 M=7.0 Kumamoto earthquake
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.
Mt. Etna eruption likely reactivated Fiandaca Fault
In Pennisi, the statue of Saint Emidio, protector from earthquakes, collapsed.
Sunda Strait tsunami launched by sudden collapse of Krakatau volcano into the sea
Tsunami, Eruption, and earthquake risk is not over
Did Tuesday’s M=7.9 Kodiak earthquake nudge the Alaskan Megathrust closer to failure?
The Alaskan Megathrust was responsible for the M=9.2 Good Friday earthquake in 1964.
Which fault ruptured in the M=6.6 Kos-Bodrum earthquake?
While the fault that ruptured in last week’s Kos-Bodrum earthquake is still up for debate, we now know that the M=7.7 earthquake in the Commander Islands ruptured the Bering Fault Zone
14 November 2016 Mw=7.8 New Zealand earthquake shows an uncanny resemblance to the 2015 Nepal shock
At 12:02 a.m. local time, a Mw=7.8 (per USGS), Mw=7.5 (per GNS Science, NZ) earthquake struck New Zealand’s South Island, and caused tsunami warnings to be issued for all of New Zealand’s east coast.
How a M=6 earthquake triggered a deadly M=7 in Japan
It’s been over four months since we wrote about the powerful Kumamoto quake sequence: The 15 April 2016 Mw=6.2 (Mjma 6.5) Kumamoto, Japan, shock, which was succeeded 28 hours later by the very damaging Mw=7.0 (Mjma 7.3) shock on the same fault system. We can now give you a preview of crucial new discoveries by Japanese and other researchers.
Italy earthquake leaves seismic gaps that were last filled by three large earthquakes in 1703
Could this happen again now? As with precursory swarms, progressive earthquake sequences are uncommon.
The Tail that Wagged the Dog: M=7.0 Kumamoto, Japan shock promoted by M=6.1 quake that struck 28 hr beforehand
Was the M=6.1 a foreshock of the M=7.0, or was the M=7.0 an aftershock of the M=6.1?