We used transient electromagnetic (TEM) to map the hydrogeological structures in Choushui River Alluvial Fan Yunlin County of central Taiwan. A total 63 TEM measurements were collected using FASTSNAP system with 50 × m in-loop configurations middle and distal fan. The 1D model, based on prior information, was constructed from inverted soundings. Results showed a thin, resistive shallow layer 40...

The history of rivers on Mars is an important constraint Martian climate evolution. timing relatively young, alluvial fan-forming especially important, as Mars' Amazonian atmosphere thought to have been too thin consistently support surface liquid water. Previous regional studies suggested that fans formed primarily between the Early Hesperian and Amazonian. In this study, we describe how a com...

The detailed geomorphological study and mapping were done for Erbil Masterplan layout 2030, in order to be useful planning urban development various land uses harmony with the instant expansion of city. map was constructed a scale1:320000 according basic geomorphic processes; structural, denudational, fluvial origin. city Urban area is situated Low Folded Zone, surrounded from north by Pirmam a...

Based on the identified typomorphic features of placer gold, a set determined morphogenetic criteria is proposed to identify genesis gold content and different sources in platform areas, which allow more correctly selecting search methods improving efficiency forecasting ore deposits. Gold particles larger than 0.25 mm with signs wind-worn processing indicate formation autochthonous aeolian pla...

The groundwater of the Choushui River alluvial fan in Central Taiwan has been overexploited for a long time. It is essential to understand factors governing changes level (GWL) use water resources. In this study, we first conducted Mann–Kendall test identify significant trends regional GWL and obtained its spatial characteristics using Moran’s I index fan. Furthermore, established geographicall...

Alluvial soils are reservoirs of metal contaminants such as Pb that originate from many different sources and are integrated temporally and spatially through erosional and depositional processes. In this study the source, lability and solubility of Pb were examined in a range of alluvial soils from the middle and lower River Trent and its tributary the River Dove using Pb isotope apportionment ...

The loess in the arid area of Xinjiang is located at eastern end Central Asia Loess Belt, and paleoclimate research about it great importance for understanding mechanism interaction Eurasian Westerly monsoon system aridity Asia. This review focuses on recent progress concerning spatial distribution, material composition provenance points out shortcomings challenges to dust circulation. Field in...