Sentences with phrase «surface runoff»

According to the study, increasing deforestation causes, increased surface runoff, especially during the rainy season, which later flows on into streams and rivers.

One of their greatest uses is in fact their ability to reduce the volume of surface runoff which decreases the risk of floods in case of heavy precipitation.

By looking at how concentrations of chemical elements in the sediment change with depth, the researchers can develop a continuous record of how much surface runoff poured into the lake.

Losses of N occur as a result of organic matter mineralization and release of NH4 and then NO3 that can be leached to groundwater or leave in surface runoff.

In addition, the widespread use of permeable or porous pavement could reduce surface runoff dramatically and help replenish aquifers.

In this case, Russell and his colleagues looked at titanium, an element commonly used to gauge surface runoff.

They found a marked dip in titanium levels in sediments dated to between 33,000 and 16,000 years ago — a strong indicator that surface runoff slowed during that period.

In some areas, boreholes that tap underground aquifers can augment water availability; in others, rivers and seasonal surface runoff can be used for irrigation.

The study, called «Modeling the effects of adopting agroforestry on basin scale surface runoff and sediment yield in the Philippines,» uses a computer - based Soil and Water Assessment Tool (SWAT) to simulate the effects of different land uses on watershed hydrology and the ecosystem services provided by the Gabayan watershed.

The gridded CLM - simulated surface runoff and base flow were provided to MOSART at the end of each time step, and MOSART routed the runoff across hillslope and through tributaries and main channels of the river network.

As shown in a new study by a team of scientists led by Dr. Britta Schmalz (Kiel University), in cooperation with Dr. Mathias Kuemmerlen, LOEWE Biodiversity and Climate Research Centre (BiK - F) and Dr. Sonja Jähnig, Leibniz - Institute for Freshwater Ecology and Inland Fisheries (IGB), deforestation may change the water surface runoff conditions, leading to a negative impact on the occurrence of microorganisms in rivers and streams.

Much of the American West relies on groundwater and surface runoff stored in dams for much of their water.

During the rainy season or the season of melting snow, any groundwater contribution is masked by heavy surface runoff and shallow aquifer effects.

The improved HTESSEL hydrology used in ERA5 is based on a revised formulation of the soil hydrological conductivity and diffusivity, spatially variable according to a global soil - type map (with up to six hydrological classes), and surface runoff based on variable infiltration capacity.

However, no anthropogenic influence can be detected for 1 - day and 3 - day surface runoff, as increases in extreme precipitation in the present - day climate are offset by decreased snow cover and lower frozen water content in soils during the May — June transition months, compared to pre-industrial climate.

Results point to a doubling of surface runoff due to the frozen conditions, while 25 % of the modelled runoff originated from snowmelt.

This can lead to sudden and violent surface runoff, creating floods (such as this one in Carmel).

Urbanization increases surface runoff, by creating more impervious surfaces such as pavement and buildings do not allow percolation of the water down through the soil to the aquifer.

First, woody perennials are able to explore a larger soil volume for water and nutrients, provide better soil cover and reduce surface runoff, all of which will reduce the impacts of droughts and extreme rainfall.

The cores showed an increase in abundance of grass in the same sediments that showed a decrease in surface runoff.

Surface runoff is water, from rain, snowmelt, or other sources, that flows over the land surface, and is a major component of the water cycle.

Since the 1970s, scientists have identified valleys and channels on Mars which they think were carved out and eroded by rain and surface runoff, just like on Earth.

If forests are cut down and converted into fields, the surface runoff increases.»

Key Terms included: - Water Cycle - Condensation - Transpiration - Groundwater - Cloud - Evaporation - Surface Runoff - Water Vapor - Precipitation - Humidity - Dew Point - Perspiration Folding and playing directions are also included.

Dr. Geh Min, former president of Singapore Nature Society, highlighted the unique role of tropical mangrove ecosystems in providing wildlife habitat, curbing coastal erosion caused by intense wave actions or surface runoff, acting as a natural purifier of water, while serving as sitea for human recreation.

The simulated data includes snow water equivalent, soil moisture, surface runoff (runoff), subsurface runoff (baseflow), and actual evapotranspiration for a region covering the Peace, upper Columbia, Fraser and Campbell River watersheds.

Surface runoff - The water that travels over the land surface to the nearest surface stream; runoff of a drainage basin that has not passed beneath the surface since precipitation.

In Kashmir, «the surface runoff... is decreasing,» he says.

It was also found that despite increased precipitation, due to increased surface temperatures and increased surface runoff, higher atmospheric demand for moisture results in drier soils.

As a result, the peaks in California's snow melt and surface runoff are likely to be more pronounced and to occur earlier in the calendar year, increasing the duration of the warm - season low - runoff period and potentially reducing surface soil moisture.

Users can sign in to the portal using OpenID and access the snow water equivalent, soil moisture, surface runoff (runoff), subsurface runoff (baseflow), and actual evapotranspiration data for a region covering the Peace, upper Columbia, Fraser and Campbell River watersheds, in three different formats, using an intuitive, map - based web interface.

Urbanisation leads to reduced infiltration and increased surface runoff, which Gornitz et al. (1997) estimate may contribute 0.35 to 0.41 mm / yr of sea level rise.

As a result, the peaks in California's snowmelt and surface runoff are likely to be more pronounced and to occur earlier in the calendar year (35, 36), increasing the duration of the warm - season low - runoff period (36) and potentially reducing montane surface soil moisture (37).

The purpose of this is to keep groundwater from seeping in to your basement from below, or surface runoff from making its way in.