Tsunami Efficiency Due to Very Slow Earthquakes

  title={Tsunami Efficiency Due to Very Slow Earthquakes},
  author={S. Riquelme and Mauricio Fuentes},
  journal={Seismological Research Letters},
Often, tsunami “sources” have been treated as a quasistatic problem. Initial studies have demonstrated that, for earthquake rupture velocities in the span of 1.5–3  km/s, the kinematic and static part of the tsunami can be treated separately. However, very slow earthquake rupture velocities in the span of 0.1–1  km/s have not been included in tsunami analytical or numerical modeling. Here, we calculated the tsunami efficiency, extending Kajiura’s definition for different models. We… 
1 Citations
Potential megathrust co-seismic slip during the 2020 Sand Point, Alaska strike-slip earthquake
In October 2020, a Mw 7.6 earthquake struck to the south of the Shumagin Islands in Alaska, nearly 3 months after the Mw 7.8 Simeonof megathrust event. The initial models of the earthquake indicate...


Mechanism of the 1992 Nicaragua Tsunami Earthquake
The 1992 Nicaragua earthquake generated larger tsunamis than expected from its surface wave magnitude (Ms 7.2) and is known as a ‘tsunami earthquake’. Seismological studies showed that the duration
Implications on 1 + 1 D Tsunami Runup Modeling due to Time Features of the Earthquake Source
The time characteristics of the seismic source are usually neglected in tsunami modeling, due to the difference in the time scale of both processes. Nonetheless, there are just a few analytical
Tsunami earthquakes: Slow thrust‐faulting events in the accretionary wedge
The November 20, 1960, Peru, October 20, 1963, Kurile and June 10, 1975, Kurile earthquakes are classified as tsunami earthquakes based on anomalously large tsunami excitation relative to earthquake
Tsunami earthquakes and subduction processes near deep-sea trenches
A tsunami earthquake is defined as a shock which generates extensive tsunamis but relatively weak seismic waves. A comparative study is made for the two recent tsunami earthquakes, and a subduction
Numerical simulation of tsunami runup in northern Chile based on non-uniform k−2 slip distributions
A large seismic gap lies along northern Chile and could potentially trigger a Mw ~ 8.8–9.0 megathrust earthquake as pointed out in several studies. The April 1, 2014, Pisagua earthquake broke the
Tsunami earthquakes possibly widespread manifestations of frictional conditional stability
[1] Tsunami earthquakes, shallow events that produce larger tsunamis than expected given their surface wave magnitudes (Ms), typically have long durations and a source spectrum depleted in short
The 1992 Nicaragua earthquake: a slow tsunami earthquake associated with subducted sediments
THE 1992 Nicaragua earthquake was a ‘tsunami earthquake‘; that is, it generated tsunamis1 disproportionately large for its surface-wave magnitude, Ms. The moment magnitude, Mw, determined from
Mechanism of tsunami earthquakes
The mechanism of the Aleutian islands earthquake of 1946 and the Sanriku earthquake of 1896 is studied on the basis of the data on seismic waves from 5 to 100 s and on tsunamis. These earthquakes
The 17 July 2006 Java tsunami earthquake
The 17 July 2006 Java earthquake involved thrust faulting in the Java trench and excited a deadly tsunami (∼5–8 m) that inundated the southern coast of Java. The earthquake's size estimates vary
Hikurangi margin tsunami earthquake generated by slow seismic rupture over a subducted seamount
Abstract Tsunami earthquakes generate much larger tsunami than their surface wave magnitude would suggest and are a problem for tsunami warning systems. They are often not accompanied by intense or