Fire frequency in 21 forest planning regions of Portugal during the period 1975–2005 was
estimated from historical burnt area maps generated with semi-automatic classification of …

The objectives of this study were to evaluate spatial sampling and statistical aspects of
landscape-level wildfire rate of spread (ROS) estimates derived from airborne thermal …

We present a new measure of earthquake clustering and explore its use for comparing the
performance of three different declustering methods. The advantage of this new clustering …

Quantitative assessment of cooperativity effects is essential for a better understanding of the
interactions between system components that is an important step on the way from black …

Debris flows (especially those of high-density or high viscosity) usually appear in the form of
surge sequence. Each debris flow event consists of tens or hundreds of surges. A debris …

A mixed model is proposed to fit earthquake interevent time distribution. In this model, the
whole distribution is constructed by mixing the distribution of clustered seismicity, with a …

The occurrence of rockfall incidents on the transportation network may cause injuries, and
even casualties, as well as severe damage to infrastructure such as dwellings, railways …

Cellular automata (CA) are time and space discrete dynamical systems that can model
biological systems. The aim of this study is to simulate by CA experiments how the disease …

The stability of the power law scaling of earthquake recurrence time distribution in a given
space–time window is investigated, taking into account the magnitude of completeness and …

Risk analyses made in the area of seismic activity are going to be of great importance in
determining the earthquake interoccurence times. Several statistical methods have been …