Does disaster shocks affect farmers’ willingness for insurance? Mediating effect of risk perception and survey data from risk-prone areas in East China

Natural Hazards - The study estimates the impact of disaster shocks and risk perception on farmers’ willingness for insurance. Based on data of 328 farmers from the Shandong province of East...     

How does resilience matter? An empirical verification of the relationships between resilience and vulnerability

Natural Hazards - The theoretical relationships between resilience and vulnerability have long been debated, but limited research has been done to test their relationships from an empirical...     

How much uncertainty does the choice of data transforming method brings to heat risk mapping? Evidence from China

Natural Hazards - Increasing extreme heat events have threatened human health seriously in the context of global climate change. As an important policy tool to resist heat-related risks, growing...     

College students’ consumption, contribution, and risk awareness related to online mapping services and social media outlets: does geography and GIS knowledge matter?

Location-enabled online tools and/or services (i.e. Google Earth/Maps, Flickr, Facebook check-ins, etc.) have been widely used for distributing and processing geospatial-related data. They attract diverse users to consume and contribute geographic information (GI) in many different forms. This study examines college students’ consumption and contribution of GI through these tools and/or services as well as their perception of risk and privacy. It evaluates the impact of Geographic information systems (GIS) and geography knowledge on the related behavior and perception. Through conducting a survey, it was found that college students’ consumption frequency of GI through the investigated tools and services is positively related to their knowledge in GIS and geography, but their GI contribution is not related. GIS knowledge was found to help raise students’ awareness level of risk. However, this relationship does not translate into students’ concern about potential privacy disclosure or their willingness to share personal location information through using location-enabled online tools and/or services. Discussions on the gap between students’ consumption and contribution of GI through the tools and/or services are shared in the paper as well as possible explanations on the disconnection between their risk awareness, privacy concern, and willingness to share personal information. Future research directions are discussed.     

How does the water–rock interaction of marly rocks affect its mechanical properties in the Three Gorges reservoir area,China?

Marly rock is a sensitive rock group of landslides in the Three Gorges reservoir area, China. It is composed predominantly of carbonate and clay minerals, water–rock interaction (WRI) of which could activate landslides in the reservoir area. To study the mechanism by which WRI affects the mechanical properties of marly rock, samples were collected from two boreholes (depth 301.78 and 307.14 m) and slope surface. Then, laboratory tests were designed to study the quantitative relationship between mineral contents and mechanical properties of intact rock, to analyze both change process of mineral composition and microstructure under short-term and long-term WRI. Finally, the change in mechanical properties and its effect on slope stability are suggested. This study indicates that the uniaxial compressive strength and Poisson ratio can be estimated by linear regression equations: (1) σ _c = 8.959 × (C/Q) ? 0.744 × CM + 58.516; (2) μ = 0.014 × (C/Q) ? 0.001 × CM + 0.234. The chemical reactions of WRI mainly included dissolution and ion exchange. On the slope surface, dissolution mainly acts on calcite, illite, dolomite, feldspar and other minerals dissolved in water. Underground, both chemical reactions of dissolution and ion exchange easily approach equilibrium with long-term seepage. Small-size minerals and micropores damage the stable microstructure of marly rock. These changes of minerals and microstructure can trigger shallow slope failure and develop deep creep deformation along some crash zones in the reservoir shoreline.     

Does knowledge of modern contraceptives and sexually transmitted infections affect contraceptive use and sexual behaviour? Evidence from senior high school girls in the Akuapem North Municipality,Ghana

It is widely documented that knowledge of sexually transmitted infections (STIs) and modern contraceptives should translate into a sexual behaviour that prevents STIs and unwanted pregnancy. This study was carried out to explore senior high school (SHS) students (girls) sexual behavior in relation to their knowledge about STIs and modern contraceptives. The study is based on a sample of 180 girls from three SHS in the Akuapem North Municipality, Ghana. Chi square test was performed to find out the relationship between knowledge about modern contraceptives, STIs and sexual behaviour. Results indicate that both knowledge of modern contraceptive and STIs are high and that knowledge of contraceptives and STIs influence utilization. However, adolescent girls utilize emergency contraceptives compared to condom. Contraceptive method preferred is different from methods used; and method used is different from intended reasons for contraception.     

Would you like to know more? The effect of personalized wildfire risk information and social comparisons on information-seeking behavior in the wildland–urban interface

Natural Hazards - Private landowners are important actors in landscape-level wildfire risk management. Accordingly, wildfire programs and policy encourage wildland–urban interface homeowners...