Information
Level 2 Detail of experimental conditions (what might be found in a journal paper or project brief in Hydstra)
Description of study
What?
Penetration resistance and shear strength were measured in three contrasting soils.
When and Where?
The study commenced in 1984 and concluded in 1986. The site was located on a broad ridge within an area of complex mesophyll vine forest. The soils are deeply weathered and of basaltic origin. The clay in this soil is dominated by kaolinite and oxides of iron and aluminium. Concentrations of dithionite-extractable iron are high in the soil with values ranging from 14% to 16% iron to a depth of 180 cm in the profile.
How?
Penetration resistance was measured using a “Bush, Mark I” recording penetrometer fitted with a cone of 12.9 mm diameter, 30o included angle. Shear strength was measured with a “Pilcon” vane, measurements were taken at depths of 5, 10, 15 and 20 cm. Estimates of shear strength and penetration resistance are based on 20 - 25 replicate profiles at each sampling occasion.
Project administration
Site identifier code: N/A
Principal investigator: Spain AV
Principal data manager: N/A
Principal organizations: Division of Soils, CSIRO.
Data custodian: Division of Soils, CSIRO.
Key co-operators: N/A
Data access policy: Research has been published but base data is not archived
Planned pathway for data: completed study, no evidence of formal database records.
Data warehousing: for ongoing studies N/A
Planned data upload frequency: for ongoing studies N/A
Key references and sources of this data synthesis
These data summaries have been extracted from:
Spain AV, Prove BG, Hodgen MJ and Lee KE. (1990). Seasonal variation in penetration resistance and shear strength of three rainforest soils from northeastern Queensland. Geoderma 47: 79-92.
Keywords:
Penetration resistance, rainforest, soil shear strength