AIM Natural calamities are known to result in higher stress conditions and also result in adverse health outcomes including development of non-communicable diseases. The impact of tsunami on mental stress and prevalence of hyperglycemic conditions was assessed in a population affected by the calamity in coastal populations of southern India. METHODS Two populations similar in demography and p...

[1] Since the 26 December 2004 Indian Ocean tsunami, the role of mangrove forests as natural defenses protecting coastal communities from tsunami disaster has been highlighted. However, some mangrove forests were destroyed by that tsunami. They are expected to have lost their protective functions. In this study, we develop a fragility function to assess the mangrove trees’ vulnerability, expres...

OBJECTIVE Nine tsunami-affected districts in Aceh, Indonesia, were surveyed between February and August 2005 to characterize tsunami mortality. METHODS The surveys employed a two-stage cluster methodology with probability proportional to size sampling, and encompassed 1653 tsunami-displaced households with a pre-tsunami population of 10 063 individuals. FINDINGS Of the original pre-tsunami ...

Secondary magnetic fields are induced by the flow of electrically conducting seawater through the Earth's primary magnetic field ('ocean dynamo effect'), and hence it has long been speculated that tsunami flows should produce measurable magnetic field perturbations, although the signal-to-noise ratio would be small because of the influence of the solar magnetic fields. Here, we report on the de...

We demonstrate a flexible strategy for local tsunami warning that relies on regional geodetic and seismic stations. Through retrospective analysis of four recent tsunamigenic events in Japan and Chile, we show that rapid earthquake source information, provided by methodologies developed for earthquake early warning, can be used to generate timely estimates of maximum expected tsunami amplitude ...

Operational TEWS play a key role in reducing tsunami impact on populated coastal areas around the world event of an earthquake-generated tsunami. Traditionally, these systems NEAM region have relied implementation decision matrices. The very short arrival times waves from generation to this made it not possible use real-time on-the-fly simulations produce more accurate alert levels. In cases, w...

Tsunamis generated by earthquakes involve physical processes of different temporal and spatial scales that extend across the ocean to the shore. This paper presents a shock-capturing dispersive wave model in the spherical coordinate system for basin-wide evolution and coastal run-up of tsunamis and discusses the implementation of a two-way grid-nesting scheme to describe the wave dynamics at re...

[1] The devastating 26 December 2004 Indian Ocean tsunami stressed the need for assessing tsunami hazard in vulnerable coastal areas. Numerical modeling is but one important tool for understanding past tsunami events and simulating future ones. Here we present a robust simulation of the event, which explains the large runups and destruction observed in coastal Thailand and identifies areas vuln...

Three benchmark cases are proposed to study tsunamis generated by underwater landslides. Two distinct numerical models are applied to each benchmark case. Each model involves distinct center of mass motions and rates of landslide deformation. Computed tsunami amplitudes agree reasonably well for both models, although there are differences that remain to be explained. One of the benchmark cases ...