We examined the composition and concentration of amino acids by soil horizon and depth on the Tanana River floodplain in interior Alaska. Soils from mid-successional stages of balsam poplar and white spruce were separated into successive forest floor (Oe/Oa), buried organic horizons (BOHs), and mineral horizons; and water-extractable amino acid composition and concentration were determined by H...

Abstract Purpose The existence of black horizons (BHs) is often highlighted in European soils, and the Po River plain northern Italy. Nevertheless, BH chronological frameworks genetic models are still debated. present study investigated genesis BHs eastern Plain where they buried at various depths. Materials methods Soil sequences were with a multidisciplinary approach integrating geomorphologi...

The main objective of the work was to identify evolutionary changes in profile recent and buried soil Holocene, content humus composition mobile forms nutrients solonetzol- silted black insufficiently wetted zone Stavropol Krai. research carried out near village Inozemtsevo, soils study area are formed on marine sediments. A 1.5-metre-high grave erected more than 5,000 years ago. At a distance ...

Seasonal frost or permafrost soils may encounter heave thaw settlement resulting from atmospheric temperature changes and/or heat emanating the resource-carrying pipeline. Notably, these soil movements can damage Thus, various ground stabilization methods have been developed to prevent onset of phenomena in frost-susceptible soils, and application thermosiphons is a representative method. Recen...

Evolution of the mixed and shortgrass prairie of the North American Great Plains is poorly understood because of limited proxies available for environmental interpretations. Buried soils in the Great Plains provide a solution to the problem because they are widespread both spatially and temporally with their organic reservoirs serving as a link to the plants than once grew on them. Through stab...

Acoustic waves can be a viable tool for the detection and identification of land mines, unexplored ordnance (UXO), and other buried objects. Design of acoustic instruments and interpretation and processing of acoustic measurements call for accurate numerical models to simulate acoustic wave propagation in a heterogeneous soil with buried objects. Compared with the traditional seismic exploratio...