Acoustic-Gravity Waves in the neutral atmosphere induce disturbances distribution of electrons ionosphere that can be observed Total Electron Content (TEC) Global Navigation Satellite System (GNSS) signals. Large GNSS networks such as Japan's GEONET provide spatially dense samples TEC time series which crosscorrelated to detect coherent structure these disturbances. Identifying atmospheric wave...

Given a distribution of earthquake-induced seafloor elevations, we present method to compute the probability resulting tsunamis reaching certain size on shore. Instead sampling, proposed relies optimization most likely fault slips that result in deformation inducing large tsunami wave. We model induced by bathymetry change using shallow water equations an idealized slice through sea. The earthq...

In the last years, large effort has been done to carry out multi-channel seismic reflection surveys (MCS) in SW Iberia to locate the active tectonic structures that could be related to the generation of the 1755 Lisbon earthquake and the tsunami. The outcome of these researches led to the identification of a large, compressive tectonic structure, named Marquês de Pombal thrust that, alone can a...

Calving from the floating termini of outlet glaciers and ice shelves is just the beginning of an interesting chain of events that can subsequently have important impacts on human life and property. Immediately after calving, many icebergs capsize (roll over by 90◦) due to the instability of their initial geometry. As icebergs melt and respond to the cumulative effects of ocean swell, they can a...

We report the result of a 2010 survey of the effects on the Iranian coastline of the tsunami which followed the earthquake of 27 November 1945 (M0 = 2.8 9 10 28 dyn cm; Mw = 8.2), the only large event recorded along the Makran subduction zone since the onset of instrumental seismology. Based on the interview of elderly survivors of the event, we obtained a database of nine values of run-up or s...

In a recent contribution, Fryer et al. (2004) have proposed to interpret many features of the 1946 Aleutian earthquake and tsunami as evidence for a major earthquake-triggered landslide. In particular, in support of their model, they claim that the T phase observed at Hawaiian Volcano Observatory (HVO) was generated at the time of the main shock, and dispute our earlier interpretation (Okal et ...

To estimate tsunami hazards, it is first necessary to have reliable data relating the rupture characteristics, such as epicenter, fault geometry, uplift speed, and duration. We made use of a mathematical model that combines analytical machine learning technique capable retrieving characteristics from acoustic data. The was applied with short computational times recorded by comprehensive nuclear...

In the past few decades, huge surges and waves generated during tsunami events have caused devastating destruction to both onshore offshore infrastructures, seriously threatening safety intactness of coastal communities around world. As one most important protection a seawall can effectively reduce impact intensity waves, thus playing vital role in protecting regions. Most previous studies syst...

Abstract Tsunami resonance excitation induces tsunami amplification, persistent oscillation, and strong current velocities, which may enlarge coastal hazards in tsunamigenic areas. Historically, the 2006 Pingtung earthquake doublet triggered tsunamis that affected south Taiwan coast. Studying features based on past is important for assessing obtaining critical disaster mitigation information. H...

In December 2004, Tamil Nadu, massive underwater earthquake sent giant waves crashing into coastlines across Southern Asia. Children were hit hard by the tsunami. Families were left homeless and lost their livelihoods. Many children lost their parents or were separated from their families and their schools were destroyed. It is well recognized that the nature and extent of disaster can influenc...