In this paper, we describe a project to generate new tsunami hazard maps (for Hakui city in Japan) that change dynamically with the 3D landform and possible tsunami heights. We also generate 3D models of safe shelters in the city to help familiarize citizens with the facilities. Furthermore, we generated a website to enable the citizens to download the hazard maps and the shelters’ images. The website is linked to the official website of Hakui city and it provides comprehensible and clear information to assist citizens in preparing for potential tsunamis.

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eformability for failure analysis of masonry structures. Many people in developing countries live in masonry structures. In earlier DEM schemes, a structure is modeled as an assembly of rigid elements, but element deformability cannot be considered. The deformation of a structure can be modeled by overlapping between elements, but Poisson’s effect cannot be modeled. However, bricks used in developing countries can readily be deformed due to their low stiffness. Therefore, it is preferable to also consider element deformability in the DEM. In the new DEM, each element is divided into two parts: an inner part that considers deformation of the element itself, and an outer part that deals with contact between elements. Deformation of a structure can be modeled by overlapping between elements and deformation of the elements themselves. The validity of the method is confirmed through a comparison of the elastic deformation with a finite element model. It was found that the original DEM and the proposed method show different failure patterns of seismic behavior due to Poisson’s effect.

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A helicopter-borne magnetic survey is conducted at the landslide-prone area of the boundary zone between the Hida belt and the green tuff in southwestern Toyama Prefecture, and the effectiveness of the airborne magnetic survey is considered in relation to its ability to verify the magnetic structure in the slope regions. Analysis using the reduction-to-thepole (RTP) method is applied to airborne magnetic anomaly data in the survey after diurnal correction and removal of the International Geomagnetic Reference Field (IGRF)-7. In addition, the magnetic properties are measured, and x-ray powder diffraction of boring cores drilled in the region of the Funatsu granite is examined. According to the magnetic anomaly distribution using the RTP method, the area of igneous rock distribution shows high magnetic anomaly, and the hydrothermal alteration zone and colluvial deposit area of landslides show low magnetic anomaly. It has become clear through the study of boring cores that pole magnetic anomaly by airborne magnetic survey refl ects the distribution of many magnetization substances in the shallow part. Aeromagnetic surveys are an effi cient method of identifying both the distribution of collapsed soil sediments in the Neogene and areas of high landslide potential in Funatsu granitic rock.

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Japan experiences many floods every year, and information on severe weather can be improved in several ways. However, past researches into severe weather information indicate that residents tend to wait for information to change and to rely on outside information too much. Against this background, we propose local weather information (LWI) as an approach to disaster mitigation. LWI is an approach to enhancing weather risk awareness between forecasters and users of weather information. The basic concept of LWI is that residents share disaster risk data obtained from various weather information by using familiar, plain, and local expressions. The study area for this research is near Miya River in Ise City, located in central Japan. From the results of a questionnaire to residents in the study area, LWI increased evacuation likelihood. Moreover, this study introduces a collaborative framework among relevant groups through LWI, which is identified as a new social system of severe weather information. This new system creates smoother risk communication on disasters by connecting the local knowledge of residents with the expert knowledge of weather forecasters. As a next step, setting of weather conditions corresponding to LWI and verification of this collaboration will be the subject of future study.

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