Continental earthquakes, especially shallow can cause disasters in populated areas. On 20 May 2016, a moderate magnitude earthquake (Mw 6.0) ruptured on Northern Territory of Australia. With the aim seismic hazard assessment, coseismic and postsesmic deformation Petermann has been determined using ALOS-2 ascending Sentinel-1A descending images. The field suggests that NNW direction with length ...

[1] Earthquake Early Warning (EEW) algorithms estimate the magnitude of an underway rupture from the first few seconds of the P-wave to allow hazard assessment and mitigation before the S-wave arrival. Many large subductionzone earthquakes initiate 50–150 km offshore, potentially allowing seafloor instruments sufficient time to identify large ruptures before the S-waves reach land. We tested an...

The 2015 Gorkha Nepal earthquake caused tremendous damage and loss. To gain valuable lessons from this tragic event, an earthquake damage investigation team was dispatched to Nepal from 1 May 2015 to 7 May 2015. A unique aspect of the earthquake damage investigation is that first-hand earthquake damage data were obtained 6–11 days after the mainshock. To gain deeper understanding of the observe...

The 2011 Tohoku earthquake (Mw 9.0) was followed by a large number of aftershocks that resulted in 70 early warning messages in the first month after the mainshock. Of these warnings, a non-negligible fraction (63%) were false warnings in which the largest expected seismic intensities were overestimated by at least two intensities or larger. These errors can be largely attributed to multiple co...

Early forecasting of aftershocks has become realistic and practical because of real-time detection of hypocenters. This study illustrates a statistical procedure for monitoring aftershock sequences to detect anomalies to increase the probability gain of a significantly large aftershock or even an earthquake larger than the main shock. In particular, a significant lowering (relative quiescence) ...

Recent studies have indicated the need of considering aftershocks in seismic design/assessment structures. This article investigates effect sequential mainshock and aftershock earthquakes on eccentrically braced steel frames with vertical energy-absorbing links. To achieve this, 4, 8 12-storey frame buildings are modelled Perform3D® software non-linear behaviour materials components. The subjec...

Abstract Four days after the 12 May 2008 M 7.9 Wenchuan earthquake struck Sichuan region of China, we submitted a prospective forecast based on transfer stress from mainshock onto significant faults crossing through populated areas. We identified where largest aftershocks were likely to occur that could cause loss life. returned revised article journal 5 June 2008, marking last day our observat...

In recent decades, significant research efforts have been devoted to developing fragility and vulnerability models for mainshock-damaged buildings, i.e., depending on the attained damage state after a mainshock ground motion (state-dependent fragility/vulnerability relationships). Displacement-based peak quantities, such as maximum interstory drift ratio, are widely adopted in analysis define b...

Abstract The 2016 Kumamoto earthquakes caused severe damage centering on the Mashiki residential area. velocity waveforms at station KMMH16 in Mashiki, during M 7.3 mainshock, show large pulses. We found that may be result of strong westward pulse. question raised is how near-fault ground motions with pulse were generated mainshock. focus characterized source model Strong Motion Generation Area...

On 30 October 2020, a strong earthquake of magnitude 7.0 occurred north Samos Island at the Eastern Aegean Sea, whose mechanism corresponds to an E-W normal fault dipping north. During aftershock period in December hydrographic survey off northern coastal margin was conducted onboard R/V NAFTILOS. The result detailed bathymetric map with 15 m grid interval and 50 isobaths morphological slope ma...