This paper evaluates climate change effects on drought severity in the region of Thessaly, Greece. The Standardized Precipitation Index (SPI) has been used for estimation of drought severity. A geographical information system is applied for the division of Thessaly region to twelve hydrological homogeneous areas based on their geomorphology. Mean monthly precipitation values from 50 precipitati...

The regional management of trace elements in soils requires understanding the interaction between the natural system and human socio-economic activities. In this study, a social-ecological patterns of heavy metals (SEPHM) approach was proposed to identify the heavy metal concentration patterns and processes in different ecoregions of Beijing (China) based on a self-organizing map (SOM). Potenti...

Many recent studies have been devoted to the investigation of the nonlinear dynamics of rainfall or streamflow series based on methods of dynamical systems theory. Although finding evidence for the existence of a low-dimensional deterministic component in rainfall or streamflow is of much interest, not much attention has been paid to the nonlinear dependencies of the two and especially on how t...

H and geomorphology are important determinants of the structure and function of fluvial ecosystems. Streamflow quantity and timing are often viewed as “master variables” limiting the distribution and abundance of riverine species (Poff et al. 1997) and the flux of nutrients into streams (Grimm 1987, Welter et al. 2005). Geomorphic structure—particularly channel form—is known to influence commun...

Many recent studies have been devoted to the investigation of the nonlinear dynamics of rainfall or streamflow series based on methods of dynamical systems theory. Although finding evidence for the existence of a low-dimensional deterministic component in rainfall or streamflow is of much interest, not much attention has been given to the nonlinear dependencies of the two and especially on how ...

Question Does spectral diversity captured by unmanned aerial systems (UAS) provide reliable information for monitoring the eco-geomorphological integrity of Mediterranean coastal dune ecosystems? Can this discriminate between two areas with low (LP) and high (HP) human pressure? Location Tyrrhenian coast, Central Italy. Methods By processing UAS images, we derived normalized difference vegetati...

Introduction: In May 2008 the Phoenix Lander descended into the north polar region of Mars. It landed at 68.22 N, 234.25 E in a shallow valley about 20 km west of a 10 km crater named Heimdall. Phoenix imaged local geomorphology, determined local ice table depth and analyzed 19 soil samples from within a ~15 m 2 work volume. Important to