Sentences with phrase «on shallow soil»

Are trees more stressed on shallow soils than deeper soils in the region?

Not exact matches

Elevated levels of radium have been found in groundwater samples from shallow monitoring wells on the Bethpage High School campus and the state DEC plans to take more samples and scan field and soil areas there for more radioactive elements.

In a paper in the current issue of Geology, Mark Sephton of Imperial College London and his colleagues reveal that sedimentary rocks from that period — when they were on the bottom of a shallow sea — contain a pulse, or unusually elevated levels of organic material from soil and plants.

The Phoenix lander, on course to reach Mars on May 25, will assess habitability of a shallow subsurface environment of icy soil farther north than any earlier mission has landed.

Both areas are on shallow siliceous soils of low fertility and high erodibility formed on primarily granitic rocks.

Although such exploration is conducted in winter, snow cover on the 1002 Area is often shallow and uneven, providing little protection for sensitive tundra vegetation and soils.

The meeting will mainly cover the following themes, but can include other topics related to understanding and modelling the atmosphere: ● Surface drag and momentum transport: orographic drag, convective momentum transport ● Processes relevant for polar prediction: stable boundary layers, mixed - phase clouds ● Shallow and deep convection: stochasticity, scale - awareness, organization, grey zone issues ● Clouds and circulation feedbacks: boundary - layer clouds, CFMIP, cirrus ● Microphysics and aerosol - cloud interactions: microphysical observations, parameterization, process studies on aerosol - cloud interactions ● Radiation: circulation coupling; interaction between radiation and clouds ● Land - atmosphere interactions: Role of land processes (snow, soil moisture, soil temperature, and vegetation) in sub-seasonal to seasonal (S2S) prediction ● Physics - dynamics coupling: numerical methods, scale - separation and grey - zone, thermodynamic consistency ● Next generation model development: the challenge of exascale, dynamical core developments, regional refinement, super-parametrization ● High Impact and Extreme Weather: role of convective scale models; ensembles; relevant challenges for model development

I do not know the exact rules because I secure all trenches but - and this also depends on the soil - the looser the soil the more shallow you need «shoring» If it's more than a 3 - 4» deep take care and slope the sides - the deeper you get you need to secure the sides.

While the plants can cope with dry, thin soils, foilage may become pale and yellow on very shallow soil over chalk.