Recently in Japan, railway ballasts have been flown out several times by heavy or intense rainfalls. However, the mechanism has not yet been investigated in detail, so that the risk and the countermeasures cannot be reasonably proposed. Therefore, in this research, model tests and numerical analyses were conducted to investigate the flow-out mechanism. It was found that the seepage characterist...

This exploratory study investigates the evacuation process of elderly facilities during Great West Japan Flood. Based on actual lifting up conditions and measurement data, we scrutinized time configured its scenario to explain vertical evacuation. The results highlight following points:

One of the most adverse weather phenomena in Catalonia are thunderstorms producing severe weather phenomenon like heavy rainfalls, hail storms, or tornadoes. Sometimes, these thunderstorms seem to have marked paths although in some cases these trajectories vary sharply, changing completely the movement directions that have previously followed, either breaking into several cells, or joining into...

The misinterpreted statistics of extreme events’ probability in drainage design codes can lead to an insufficient capacity systems. This is one the main factors frequent floods, especially coastal cities. Heavy rainfalls, so-called “1-in-50-year” or “1-in-100-year” events followed by may occur there every 2–3 years. We hope contribute correct understanding statistics. To achieve this goal, we f...