Hydrology of area 12, Eastern Coal Province, West Virginia /

Mode of access: Internet.

Hydrology of area 19, Eastern Coal Province, Tennessee /

Mode of access: Internet.

Hydrology of area 24, Eastern Coal Province, Alabama and Georgia /

Mode of access: Internet.

Hydrology of area 5, Eastern Coal Province, Pennsylvania, Maryland, and West Virginia /

Mode of access: Internet.

Hydrology of area 10, Eastern Coal Province, West Virginia /

Mode of access: Internet.

Hydrology of area 49, northern Great Plains and Rocky Mountain coal provinces, Montana and Wyoming /

Mode of access: Internet.

Hydrology of area 21, Eastern Coal province, Tennessee, Alabama and Georgia /

Mode of access: Internet.

Hydrology of area 45, northern Great Plains and Rocky Mountain coal provinces, Montana and North Dakota /

Mode of access: Internet.

Hydrology of the Tertiary-Cretaceous aquifer system in the vicinity of Fort Rucker Aviation Center, Alabama /

Mode of access: Internet.

Hydrology of area 11, Eastern Coal Province, Ohio, Kentucky, and West Virginia /

Mode of access: Internet.

Response of coastal groundwater table to offshore storms

Large groundwater table fluctuations were observed in a coastal aquifer during an offshore storm. The storm induced significant changes of the mean shoreline elevation, characterized by a pulse-like oscillation. This pulse propagated in the aquifer, resulting in the water table fluctuations. A general analytical solution is derived to quantify this new mechanism of water table fluctuation. The solution is applied to field observations and is found to be able to predict reasonably well the observed storm-induced water table fluctuations. Based on the analytical solution, the damping characteristics and phase shift of the oscillation as it propagates inland are examined.

Quantifying effects of soil heterogeneity on groundwater pollution in four sites in the USA

Four sites located in the north-eastern region of the United States of America have been chosen to investigate the impacts of soil heterogeneity in the transport of solutes (bromide and chloride) through the vadose zone (the zone in the soil that lies below the root zone and above the permanent saturated groundwater). A recently proposed mathematical model based on the cumulative beta distribution has been deployed to compare and contrast the regions' heterogeneity from multiple sample percolation experiments. Significant differences in patterns of solute leaching were observed even over a small spatial scale, indicating that traditional sampling methods for solute transport, for example the gravity pan or suction lysimeters, or more recent inventions such as the multiple sample percolation systems may not be effective in estimating solute fluxes in soils when a significant degree of soil heterogeneity is present. Consequently, ignoring soil heterogeneity in solute transport studies will likely result in under- or overprediction of leached fluxes and potentially lead to serious pollution of soils and/or groundwater. The cumulative beta distribution technique is found to be a versatile and simple technique of gaining valuable information regarding soil heterogeneity effects on solute transport. It is also an excellent tool for guiding future decisions of experimental designs particularly in regard to the number of samples within one site and the number of sampling locations between sites required to obtain a representative estimate of field solute or drainage flux.