Latest Soil physics Stories

2009-06-20 15:33:28

Researchers trace a problem with a key climate model to its hyrdrology scheme and find a simpler scheme keeps simulations in line with real-world observations Imagine a climate model as a black box. You put something in, you get something out. But what happens when the output is completely unexpected? "If you don't get the results you expect, that's when you start to ask why," said climate modeler Peter Lawrence from the University of Colorado at Boulder's Cooperative Institute for Research...

2008-12-03 13:07:13

Researchers report in the Soil Science Society of America Journal that 3-D laser scanning can provide a more thorough analysis of a soil's quality, helping to further understand how healthy crops are produced. Soil researchers pay close attention to bulk density, as it is one of the most common soil measurements and it is often used as a measure of soil quality. A soil's bulk density can be indicative of the ease of root penetration, water movement, and soil strength. Measuring this...

2008-07-03 03:00:15

By Keener, H M Wicks, M H; Skora, J A VOLUMETRIC IMPORTANCE Study develops consistent methodology for accurately measuring volumes of unprocessed and processed materials at yard trimmings composting facilities. Part I OHIO has a total of four classes of compost facilities (I-IV) regulated by the Ohio Environmental Protection Agency (Ohio EPA), distinguished by the types of materials received and size of the facility. Class I facilities may receive any solid waste and require a permit...

2008-07-02 06:00:47

By Munch, E Franco, J; Deville, S; Hunger, P; Saiz, E; Tomsia, A P This work compares Two novel techniques for the fabrication of ceramic scaffolds for bone tissue engineering with complex porosity: robocasting and freeze casting. Both techniques are based on the preparation of concentrated ceramic suspensions with suitable properties for the process, in robocasting, the computer-guided deposition of the suspensions is used to build porous materials with designed three dimensional...

2008-04-25 08:10:00

Europeans want to peek into their soil and see how dry they are. And an Iowa State University professor is eager to help, and even check their results.The European Space Agency (ESA) is set to launch the Soil Moisture and Ocean Salinity (SMOS) satellite this fall as researchers try to learn more about the amount of moisture in the ground in the United States and around the world.ISU's Brian Hornbuckle is helping them. For the past year, Hornbuckle has led a team of investigators from ISU, the...

2007-07-17 14:25:47

The first soil moisture maps with a spatial resolution of one km are available online for the entire southern African subcontinent. As soil moisture plays an important role in the global water cycle, these maps, based on data from ESA's Envisat satellite, will lead to better weather and extreme-event forecasting, such as floods and droughts. "Predicting when and where floods are likely to happen is becoming more and more important," Geoff Pegram of the University of KwaZulu-Natal, South...

2007-02-28 09:56:24

By Jung, W K; Kitchen, N R; Anderson, S H; Sadler, E J ABSTRACT: Plant water and nutrient use for claypan soils are restricted by an argillic horizon (clay content > 500 g kg^sup -1^) that typically occurs 20 to 40 cm (8 to 16 in) below the soil surface. Identifying water infiltration characteristics for claypan soils under different management provides crucial information needed to optimize crop management and estimate watershed hydrology. The objectives of the study were: 1) to...

2007-02-01 09:00:43

U.S. scientists say they've determined rain evaporation and continental convection play an important part in the tropical water cycle. The researchers, led by John Worden at the National Aeronautics and Space Administration's Jet Propulsion Laboratory, analyzed global measurements of the isotopic composition of water vapor from NASA's Tropospheric Emission Spectrometer to determine the processes driving the tropical hydrological cycle. The scientists say they discovered rainfall...

2006-12-13 03:00:32

By Pandey, C; Shukla, S A two-year study was conducted in 2002-2003 (season one) and 2003- 2004 (season two) at a seepage irrigated vegetable farm in south Florida to investigate the effects of soil organic amendment (composted yard waste) on movement of water in a sandy soil. Season one result showed that for the same water table depth, soil moisture content in the compost field was higher than the noncompost field in the root zone (top 20 cm). The increased soil moisture was attributed to...

Word of the Day
  • A cloth or covering, more or less ornamented, laid over the saddle or furniture of a horse, especially of a sumpter-horse or horse of state.
  • Clothing, especially sumptuous clothing; equipment; outfit.
  • To cover with a caparison, as a horse.
  • To dress sumptuously; adorn with rich dress.
This word ultimately comes from the Medieval Latin 'cappa,' cloak.