Sentence examples for creek sediments from inspiring English sources

However, the sediments of the Project Area lacked the woody detrital cover, high peat content, and predominance of silt and clay characteristic of the natural creek sediments.

Reactive phosphate δ18O values extracted from sediments and soils in the watershed range from 10.6‰ in a drainage ditch to 22.3‰ in creek sediments near agriculture fields.

Weston first began looking at pyrethroid levels in streams bordering farm fields in 2004, and reported levels in some creek sediments high enough to kill the shrimp-like amphipod, an organism used by the U.S. Environmental Protection Agency as an indicator of the health of freshwater sediment.

We determine the weathering rates using two independent means: (1) in situ-produced cosmogenic nuclides in surface soil and creek sediments in the close vicinity of the regolith combined with immobile element mass balance across the regolith and (2) river dissolved loads.

Creek sediments are confined environments where hydrostatic pressure gradients are high during flood and ebb tides.

They show that dissolved sulfide can occasionally reach the SWI at rising tide, even in creek sediments (Figure 5b).

In the process of demolishing contaminated buildings and dredging river and creek sediment, the E.P.A. has saved mill tools, large spools and machinery, and the employment records of thousands of immigrant workers, most of them Eastern Europeans who were often recruited fresh from Ellis Island.

If the surface area of the unvegetated creek sediment is smaller than that of the main tidal river, the hydrostatic pressure should be higher in the unvegetated creek bank sediment, and a vertical displacement toward the sediment-water interface may be promoted.

The decrease in dissolved sulfide followed by the production of soluble organic-Fe(III) in the surficial sediment layers (≤ 3 cm) of the creek sediment at ebb tide (Figure 4a and 4b) and at rising tide (Figure 7) may be related to the input of dissolved oxygen when the hydrostatic pressure changes in the sediment.

The only sample yielding EcO157 was a creek sediment sample collected adjacent to Farm A in July 2004.

In contrast, creek bank sediments contain large concentrations of ferrous iron (Table 1, Figure 3) and sometimes reduced manganese (Figure 2, Figure 4).