The unsmooth boundary will greatly affect motion morphology of a shallow water wave, and a fractal space is introduced to establish a generalized KdV-Burgers equation with fractal derivatives. The semi-inverse method is used to establish a fractal variational formulation of the problem, which provides conservation laws in an energy form in the fractal space and possible solution structures of t...

Catchment drainage area is a basic spatial unit in landscape hydrology within which the authorities estimate water balance and manage resources. The catchment commonly delineated based on surface topography, determined using digital elevation model. Therefore, only flow over implicitly considered. However, substantial portion of rainfall infiltrates percolates through soil profile to groundwate...

The high-frequency channel of lunar penetrating radar (LPR) onboard Yutu-2 rover successfully collected high quality data on the far side Moon, which provide a chance for us to detect shallow subsurface structures and thickness regolith. However, traditional methods cannot obtain reliable dielectric permittivity model, especially in presence mix between diffractions reflections, is essential un...

One deficiency of current shallow parsing based Semantic Role Labeling (SRL) methods is that syntactic chunks are too small to effectively group words. To partially resolve this problem, we propose semantics-driven shallow parsing, which takes into account both syntactic structures and predicate-argument structures. We also introduce several new “path” features to improve shallow parsing based ...

Bubbles generated by breaking waves can drive significant gas exchange between the ocean and atmosphere, but the role of bubble-mediated gas transfer in estuaries is unknown. Here, backscatter data from 41 acoustic Doppler current profiler stations was analyzed to assess subsurface bubble distributions in nine estuaries along the U.S. East and Gulf Coast. Wind speed, wind direction, and current...

Meltwater from the Greenland Ice Sheet often drains subglacially into fjords, driving upwelling plumes at glacier termini. Ocean models and observations of submarine termini suggest that plumes enhance melt and undercutting, leading to calving and potential glacier destabilization. Here we systematically evaluate how simulated plume structure and submarine melt during summer months depends on r...

We describe a three-dimensional 3D finite element analysis model of the contact between an atomic force microscopy AFM tip and a substrate with finite size subsurface structures. The model can simulate the contact stiffness measured by a scanning AFM tip on the surface of a sample with buried nanoscale structures. In addition to the analytical verification and convergence analysis, we present t...

Humans are exposed to chemicals in contaminated groundwaters that are used as sources of drinking water. Chemicals contaminate groundwater resources as a result of waste disposal methods for toxic chemicals, overuse of agricultural chemicals, and leakage of chemicals into the subsurface from buried tanks used to hold fluid chemicals and fuels. In the process, both the solid portions of the subs...

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...

Marchenko, S. 2018. Subsurface fluxes of mass and energy at the accumulation zone of Lomonosovfonna ice cap, Svalbard. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 1601. 52 pp. Uppsala: Acta Universitatis Upsaliensis. ISBN 978-91-513-0158-7. Glaciers cover ca 10% of the Earth's land and are found in the high altitudes and latitudes. They ar...