A regional assessment of multi-decadal changes in nitrate concentrations was done using historical data and a spatially stratified non-biased approach. Data were stratified into physiographic subregions on the basis of geomorphology and soils data to represent zones of historical recharge and discharge patterns in the basin. Data were also stratified by depth to represent a shallow zone general...

abstract flood is among phenomena which result considerable damages to resources and is a serious issue among hydrologists. the proper estimation of runoff is necessary for designating appropriate approaches for its control or optimal management. various problems have been reported in application of empirical models. the regional analysis of runoff with different return periods by applying wate...

Helicopter landing sites in proximity to the forest fire-risk zones are necessary for the delivery of supplies and fire emergency response teams. In this paper, we initially prepared forest fire risk map using Random Forest algorithm by overlaying the effective factors on fire occurring including vegetation types, physiographic, climatic and human factors. Then, three variants of natural candid...

The Gera basin is located in the Thuringian middle mountain range area of Germany. Physiographic and climatic factors, such as topography, landuse and soils as well as precipitation varying strongly. They are resulting in a highly complex of variable water and nutrients turnover processes. One of the main water quality problems occuring in the Gera basin is related to nutrients. Therefore the m...

Tahiti Nui is a quiescent tropical volcanic island (French Polynesia) characterized by an intense erosion (up to 0.25 km3·kyr−1 over the last 1 Ma) that resulted in 27 main drainage basins radially distributed around central depression. Those are different rates (from 0.07 24.6 10−2 km3·kyr−1), ages 469 892 ka), micro-climate set-ups and other landform factors. In this study, we assess, terms o...