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  • Strength of soil aggregates and of aggregate beds in Impact of water and external forces on soil structure. Selected papers of the 1st Workshop on soilphysics and soilmechanics, Hannover 1986.
  • The crushing test on soil aggregates of irregular shape is calibrated against the Brazilian test for cylinders. Factors affecting the strength of soil aggregates are reviewed. These include water content, wetting and drying cycles, and age hardening
  • . The stresses on individual aggregates in random beds of uniform aggregates are analysed. Changes in the structure of beds of aggregates with compaction and with rainfall are compared.
  • The dynamics of rainsplash erosion and the role of soil aggregate stability
  • The work of a number of authors is integrated to reveal a sequence of events occurring during rainsplash erosion. The implication of this sequence is that aggregate stability plays a central regulatory role. Using 20 iron rich soils from Mozambique
  • it is shown that their temporal dynamics as regards splash loss is consistent with this proposed sequence, and that in addition aggregate stability does directly relate to total splash loss over a 50 minute period of rain. By now considering the soil
  • properties a statistical model is formulated. A model which seems to imply that the central regulatory role of aggregate breakdown is only a partial answer to erodibility, as important are the characteristics of the breakdown bi-products.
  • Drop testing aggregate stability of some soils near Merida, Spain
  • The drop test for aggregate stability results in a distribution of destroyed aggregates with increasing drop number. The influence of prewetting time on drop test results is considered. Secondly new indices to describe the drop test results
  • and modifications of the drop test are suggested to avoid undue influence of small numbers of very stable aggregates, and to shorten the test procedure.
  • Relationships between aggregation and iron oxides in Terra Rossa soils from southern Italy
  • This paper reports the relationships between the mineralogy of the Fe oxides and aggregation in Terra Rossa soils of Southern Italy. Consideration is given to the possible interaction between Fe oxides and other constituents.
  • Improving aggregate stability of sodic sandy loam soils by organics
  • The objective of this study was to examine at different application rates the effectiveness of some natural and synthetic organics in improving aggregate stability of sodic soils. An attempt has also been made by multi-index approach to select
  • Stability of clay aggregates as a function of water regimes in Impact of water and external forces on soil structure. Selected papers of the 1st Workshop on soilphysics and soilmechanics, Hannover 1986.
  • The experiments confirm the results that stability of clay aggregates is not only a matter of water content. Stability of clay aggregates is a function of their water regime, which is the result of the amount of water and the corresponding pressure.
  • An evaluation of the use of size distribution of sediment in runoff as a measure of aggregate breakdown in the surface of a cracking clay soil under rain
  • Two rainfall simulators of different plot size were used to test whether sediment in runoff could be used to measure aggregate breakdown in the surface of a cracking clay soil under rain. Size distributions of deposited sediment were similar
  • Some observations on the stability of soil aggregates to raindrop impact
  • Spatial aggregation of complex terrain
  • Erosion of calcimagnesic soils as aggregates in Jurassian pedological systems
  • Spatial and temporal aggregation effects in a regional water supply planning model
  • An improved method of aggregate stability measurement
  • The A. shows, under controlled experimental conditions, aggregates of fresh and partly-weathered schist and fresh pre-cut schist blocks submitted to 500 accelerated freeze-thaw and hydration-dehydration cycles. Although hydration effects were
  • not as effective as frost action in causing particle size reduction in aggregates, the two mechanisms may well reinforce one another in periglacial environments, enhancing the ability of these areas to serve as source regions for loess.
  • Dial patterns of aggregative behavior in tadpoles of Bufo americanus, in relation to light and temperature
  • Effects of time under rain, sampling technique and transport of samples on size distributions of water-stable aggregates
  • A comparison of aggregate stability test procedures in determining the stability of fine sandy soils in Fife, Scotland
  • The role of moisture content in the stability of soil aggregates from a temperate silty soil to raindrop impact
  • Here a general definition of one of the components of soil erodibility, namely soil detachability is proposed. This definition is supported by some experimental evidence. Texture, aggregate stability and soil shear strength are the main soil
  • This paper reports the use of a hand held shear vane (a technique that can easily be applied in the field) to examine the relationship between soil strength and rill initiation for a strongly aggregated vertisol.
  • The influence of organic matter on splash detachment is investigated using soils with grass and peat treatments. Because of the different processes involved, both negative and positive relationships between splash detachment and aggregate stability