Decision makers in fluvial flood risk management increasingly acknowledge that they have to prepare for extreme events. Flood risk is the most common basis on which to compare flood risk-reducing strategies. This paper discusses the added value of robustness as an additional decision criterion compared to single-value flood risk only, by quantifying both metrics for the IJssel River valley in the Netherlands. Results show that robustness analysis is a valuable addition to flood risk analysis.
A new pan-European map of soil erosion is presented following a novel extension of the RUSLE model (e-RUSLE) designed for data-poor regional assessment and for identifying areas in Europe where to concentrate efforts for preventing soil degradation. e-RUSLE exploits the array-based semantics of a multiplicity of factors (semantic array programming). A climatic ensemble of an array of erosivity equations is considered along with a new factor for better considering soil stoniness within the model.
Deciphering coseismic offsets from creeping is a key point for an active fault behavior. In a subaqueous setting, coseismic offsets of the seafloor may be sealed off by earthquake-triggered sediments. Along the limit of a pull-apart basin in the Sea of Marmara, successive vertical offsets (up to 1.4m) are deduced from the thicknesses of homogenites which seal-off created scarps. During a 2kyr period, coseismic seafloor offsets are dominant, representing potential tsunami hazards.
This paper focuses on interactions between society and its volcanic environment at Mt. Bromo from a human–volcano-system perspective. The results show that the local population not only is exposed to negative volcanic impacts but also enjoys benefits and opportunities. Following this perspective, the concept of risk must be expanded from a pure negative connotation to a more holistic, open view of risk which addresses both potentially positive and negative aspects of the uncertain future.
The main characteristics of mudflow processes that have emerged in the past in the area downstream of the Grohovo landslide are examined, and the more relevant parameters and attributes describing the mudflow are presented. Principal equations that form the basis of the SPH depth-integrated model are reviewed and applied to analyze the Grohovo landslide and propagation of the mudflow wave downstream of the landslide.
This study provides an approach for effective disaster management by using geographic information technologies. ADYS, as an interoperable and object-oriented geographic data model, was designed for the activities at the different phases of landslide management. ADYS is compliant with the standards of ISO/TC211, OGC, and Turkey National GIS (TUCBS). ADYS toolbox using open spatial analysis tools was developed for the activities of landslide management.
This article uses summary statistics of spatial point process theory to study the spatio-temporal pattern of a rockfall inventory recorded with repeated terrestrial laser scanning surveys at a chalk coastal cliff site in Normandy, France. This allows testing and quantifying the significance of geomorphological observations. From a spatial distribution perspective, behaviours of small and large scars cannot be considered equivalent, suggesting that erosion processes and triggering factors differ.