Sentences with phrase «half of surface waters»

Because of its high amount of surface water, it was ideal for loi, irrigated fields for farming the starchy vegetable taro, a staple crop, she said.

Over 70 percent of their surface water is polluted.

In addition the irrigated fields have severe problems of salination due to evaporation of surface waters that leave salt behind in the soil.

The Namoi River Valley catchment covers around 4 per cent of the Murray - Darling Basin and uses around 2.6 per cent of all surface water and 15.2 per cent of groundwater in the Basin (excluding the confined aquifers of the Great Artesian Basin).

This is accomplished with a powerful blast of warm air that quickly breaks up the layer of surface water on a userâ $ ™ s hands for quick removal and evaporation.

Satellites had spotted cold tongues of surface water extending westward from the South American coast, an indicator of a strong La Niña, El Niño's opposite number.

Scientists aren't sure why the blob formed, though many blame a ridge of high pressure that brought sunnier weather and less mixing of surface water with colder, deeper water.

Groundwater is an important source of freshwater, particularly in the West, and is often used to make up for the lack of surface water during droughts, the authors note.

The use of surface water is governed by more than a century of law and, in the case of the Colorado River, divided down to the gallon under a seven - state compact and state laws.

«Because of the frequent shortages of surface water, California has to resort to pumping out water from the ground, but that's not sustainable because there isn't enough rain to replenish the amount we're taking out.

Most of the surface water appears to be depleted, leaving behind a thick crust of dark organic material.

In the dry season, surface water reservoirs are at the same level as the aquifer that feeds them: altitude measurements of the surface water then made possible direct observations of the height of the groundwater.

«The primary producers, the phytoplankton, take carbon dioxide out of the surface waters and «fix» it into a form of carbon that can sink down to the deep where it is stored,» Gibson says.

The map shows the fractional amount of surface water that is likely to enter the hyporheic zone, where it can undergo filtration.

In a 2012 study of 33 fungicides used on potatoes, Kuivila's lab found that 75 percent of surface waters tested and 58 percent of ground water samples were contaminated with traces of at least one fungicide.

Salinity of the surface waters can be influenced by the amount of river water flowing into the oceans, yet no computer models of ancient ocean circulation had included this variable.

Evaluation of the area where this lake existed shows the expansion and contraction of this groundwater - linked body of surface water.

Water concentrated and conveyed by washes would have allowed for the diversion of surface water to irrigate large corn fields on the Chuska Slope, he said.

The fisheries biologist and Muthiah Muruganandam, a Fulbright scholar from the Indian Council of Agricultural Research, will use existing data to track changes in the characteristics and water quality of surface waters in northeastern South Dakota.

For example, scientists have found that El Niño and La Niña, the periodic warming and cooling of surface waters in the central and eastern tropical Pacific Ocean, are correlated with a higher probability of wet or dry conditions in different regions around the globe.

A prerequisite for this is a rapid rise in sea levels that would lead to an increased outflow of surface water in this direction.

However, significant emissions reductions to meet the two - degree target by 2100 could ensure that half of surface waters presently occupied by tropical coral reefs remain favourable for their growth.

Nearly one in 10 U.S. watersheds is «stressed,» with demand for water exceeding natural supply, according to a new analysis of surface water in the United States.

The patterns of occupancy were not necessarily surprising to researchers, but did verify that water depth, temperature and amount of surface water were significant predictors for a pool's suitability for Yosemite toad use.

Nearly one in 10 U.S. watersheds is «stressed,» with demand for water exceeding natural supply, according to a new, CIRES - led analysis of surface water in the United States.

As the paper suggests, one could be the evaporation of surface waters that have become exposed because of sea ice loss in the region, he added.

«According to climate predictions, annual precipitation is likely to decrease in the Southwest but increase in the eastern United States during the 21st century, therefore, the observed diverse trends of surface water body areas since 1984 could continue to occur in the future,» said Xiao.

Britton Stephens, an NCAR scientist and the project's co-principal investigator, said HIPPO flights have collected the first large - scale measurements of carbon dioxide and oxygen cycling into and out of surface waters of the Southern Ocean.

«The data, information and knowledge on long - term trends of surface water bodies across the CONUS at high spatial resolution are valuable for planning and management of surface water resources, however, they are not widely available yet,» said Xiao, professor of ecology and remote sensing in the Department of Microbiology and Plant Biology, OU College of Arts and Sciences.

Combining RPO and radiocarbon dating, scientists can link the most - heat - reactive organic matter to the youngest carbon dates, thereby obtaining more accurate sediment ages, which correspond to the ages of surface water plankton in the sediments.

They are also in discussions with another Ontario company to determine the applicability of their technology to the cleanup of surface waters surrounding the Fukushima plant in Japan.

It also reduces flooding, erosion and contamination of surface water.»

SRIC Puerco Water Quality Report - Summary of Surface Water and Ground Water Quality Investigations Conducted by Southwest Research and Information Center in the Puerco River Valley, New Mexico and Arizona, 1986 - 1987, prepared by Chris Shuey and Ray Morgan, Puerco River Education Project (PREP), SRIC, December 1987.

Most of the bottom waters are supersaturated and over half of surface waters are supersaturated.

More than half of the surface water is supersaturated also.

It is a primary cause of eutrophication of surface waters, in which excess nutrients, usually nitrogen or phosphorus, stimulate algae growth.

Continued thaw results in draining of surface waters and drying of upper soil layers, which might mitigate CH4 loss to the atmosphere [Watts et al., 2014].

http://www.capitalpress.com/California/20150818/drought-fallows-half-million-acres-in-california (NB, there was a decline of 9 million acre feet of surface water partially balanced by an increase of 6 million acre feet of well water, for a net decrease of only 3 million acre feet) What about non agriculture land?

The two alien life forms that we envision for this world are animals — mobile predators that live around the planet's few small bodies of surface water.

In appalling driving conditions with unbelievable amounts of surface water it handled it effortlessly.

Some of the major hydrology applications involve the use of surface water systems, namely rivers, open - channels, and estuaries.

The reserve receives an average of 52 inches of rainfall a year The average July - August temperature of surface waters is 29C.

* The Global Coral Reef Alliance says global warming of surface waters is already killing large amounts of coral.

http://www.capitalpress.com/California/20150818/drought-fallows-half-million-acres-in-california (NB, there was a decline of 9 million acre feet of surface water partially balanced by an increase of 6 million acre feet of well water, for a net decrease of only 3 million acre feet) What about non agriculture land?

Recent qualitative reconstructions of salinity based on various proxies suggest that values of surface water salinity in the Black Sea rose until ca. 3 kyr B.P., followed by a gradual freshening to present - day values (van der Meer et al., 2008; Coolen, 2011).

Florida was only marginally habitable for that reason until massive clearing of the bush and draining of the surface waters occurred.

------------ PS: The Global Coral Reef Alliance has documented dramatic declines in coral reefs caused by global warming of surface waters, using satellite data of of global coral reefs and sea surface temperatures.

The results of this study and of Feely et al. (2008) for the coastal North Pacific and Orr et al. (2008) for the Arctic show that undersaturation of surface waters with respect to aragonite is likely to become reality in a few years only.

Alright, how about winds resulting in the upwelling of deep water and the downwelling of surface water?

The combination of observation - based estimates... with NCAR CSM1.4 - carbon model projection indicates that 10 % of the surface water along the investigated Arctic transect will become undersaturated for at least one month of the year when atmospheric CO2 exceeds 409 ppm.