Geochemical investigations have permitted the refinement of the environmental interpretation of the f-Member of the Qum formation, Central Basin, Iran, which has been established through detailed microfacies (MF) analysis. The analysis revealed that the f-Member carbonates consist of eight distinct microfacies designated by the letters A through H. On the basis of petrographic characteristi...

Hurricane-related winds are a major source of disturbance in coastal ecosystems of the southern United States, but their effects on forests in the southern Appalachian Mountains, >400 km inland, have seldom been documented. In October 1995, remnant winds of Hurricane Opal caused windthrow of individual and patches of trees throughout the mountainous region of western North Carolina, USA. The 2-...

Within basins that exhibit open-ocean convection, convectively mixed fluid is often observed in regions of upward-doming isopycnal surfaces, preconditioned by either cyclonic circulation and/or bottom topography. Here, an equilibrium statistical theory for open-ocean convection, developed in the context of two-layer heton models, is adapted to study the outcome of basinwide cooling events over ...

Substantial bottom topography in a basin with planetary vorticity gradients strongly affects the vertical structure of the linear topographic and planetary Rossby waves that spin up the ocean circulation. There is no barotropic mode with large amplitude topography and stratification. It is shown that the lowest frequency two-layer quasigeostrophic waves that exist with stratification, planetary...

Hydromorphometric analysis as a method is considered one of the most reliable and used methods in solving hydrological problems. Where it possible to know volume runoff rest elements that enter into water balance. Geographical Information System Remote Sensing technique hydro-morphometric Wadi Al-Mohammadi basin. Al-Mohammadi, located Western Desert, main valleys flow Euphrates River. It an imp...

Energy dissipators, such as stilling basins, are usually required at the toe of stepped chutes to achieve adequate and safe operation spillway. Stepped chute hydraulics has been extensively studied in last several decades, however, only limited knowledge is available on basin performance below chutes. In particular, effect slope remains unknown, despite being a central design issue. Therefore, ...

This study aimed to produce the erosion susceptibility map of Godrahav basin by using Analytic Hierarchy Process (AHP) method. stream basin, located within borders Artvin province in Eastern Black Sea Region, covers an area approximately 5310.12 hectares. In order area, 11 geo-environmental criteria which are effective formation (slope, aspect, profile curvature, drainage density, distance netw...

—We quantified the relationships among urban land cover, fishes, and habitat quality to determine how fish assemblages respond to urbanization and if a habitat index can be used as an indirect measure of urban effects on stream ecosystems. We sampled 30 wadeable streams along an urban gradient (5–37% urban land cover) in the Etowah River basin, Georgia. Fish assemblages, sampled by electrofishi...

â â â  in the last years, have been accelerated increased the damages of landslides by natural and anthropogenic factors. one of the main solutions to decrease landslide hazards is avoid from prone areas. for this purpose, it is necessary to prepare the landslide susceptibility map. in this research, after field studies in the ilam dam basin, nine factors including slope gradient, aspect, eleva...

This article aims to review studies pertaining to trends in rainfall, rainy days and temperature over India. Sen’s non-parametric estimator of slope has been frequently used to estimate the magnitude of trend, whose statistical significance was assessed by the Mann–Kendall test. Spatial units for trend analysis vary from station data to sub-division to sub-basin/ river basins. There are differe...