Lunar topographic data revealed a large population of large impact basins not previously recognized by standard photogeologic mapping. Crustal thickness model data reveal the presence of even more. The total number of lunar basins > 300 km diameter may exceed 150, more than 3 times that determined by photogeologic mapping alone. Introduction: Photogeologic mapping suggested the cumulative numbe...

Crater retention ages of the 20 largest impact basins previously recognized on Mars suggest most formed in a relatively short time, perhaps in less than 200 million years. New crustal thickness data suggests there are several additional very large basins, some lying outside the areas affected by those already known. Crater retention ages for these newly identified basins are not significantly o...

physiographic characteristics and climatic conditions are factors which contributing to river flow regime and understanding of relations between these factors and river flow in a basin result in its application for the ungauged sub-basins river flow prediction. in this research the relation between physiographic and climatic parameters of golestan province and rivers flow were examined by appli...

The BASINS (Better Assessment Science Integrating point and Non-point Sources, Release 2) system, created under the auspice of the U.S. Environmental Protection Agency (EPA), uses An'Vie\\, as a framework to integrate several hydrologic/hydraulic and water quality models. The BASINS system also includes a national stream characteristic database that contains reach-scale data on mean stream widt...

This study compares mean areal precipitation (MAP) estimates derived from three sources: an operational rain gauge network (MAPG), a radar/gauge multisensor product (MAPX), and the Precipitation Estimation from Remotely Sensed Information using Artificial Neural Networks (PERSIANN) satellitebased system (MAPS) for the time period from March 2000 to November 2003. The study area includes seven o...

The main objective of the paper is to understand the contributions to the uncertainty in low-flow projections resulting from hydrological model uncertainty and climate projection uncertainty. Model uncertainty is quantified by different parameterisations of a conceptual semi-distributed hydrologic model (TUWmodel) using 11 objective functions in three different decades (1976–1986, 1987–1997, 19...

Introduction Changes in land surface shape in active tectonic  zones result from interplay between tectonic forces and surface processes (Keller and Pinter, 1996; Keller et al., 1999). Salt Domes  are dome-shaped Geological structures whose central core is composed of salt. Their economic importance is due to the location of oil tanks in structures with salt domes and also the presence of sulf...

We examine the hypothesis that basins characterized by (1) marked spatial variability in precipitation, and (2) less of a filtering effect of the input rainfall signal will show improved outlet simulations from distributed versus lumped models. Basin outflow response to observed spatial variability of rainfall is examined for several basins in the Distributed Model Intercomparison Project. The ...