Aeolian Simulation Laboratory

Experimental research in geomorphology

Soil Erodibility and Dust Emission

SEM images of soil aggregates

Soil erosion exerts significant environmental and socioeconomic consequences including soil loss and air pollution. Information is essential to support management strategies for soil conservation.

This long-term project aims to:

  • Explore aggregation dynamics through the topsoil characteristics and their response to climatic changes and anthropogenic pressures. This includes quantitative evaluation of essential soil resource (clay, nutrients) decline and land degradation.
  • Explore dust emission from natural and anthropogenic source areas by integrating field and laboratory wind tunnel experiments, towards developing a robust estimation of dust load quantities and parameterizations for predictive models.

Soil Stabilization and Dust Control

This project aims to develop materials and methods for preventing soil erosion and dust emission, while supporting sustainable land management practices to preserve natural resources. In the first phase, wind tunnel laboratory experiments are conducted to evaluate the efficacy of control products and stabilization methods. Findings are subsequently applied in experimental field plots, including quarries and agricultural areas.

Key targets include:

  • Optimization of brine/PVA application rates for dust control on unpaved roads
  • Development of clay-based geopolymer composites for loess soil stabilization
  • Amendment of quarry waste materials for the rehabilitation of erosive surfaces
  • Application of biopolymers for dust suppression in quarry environments
Dust emission from an unpaved road

Dust Storms and Air Pollution

Dust storm in Israel

Desert dust exerts profound impacts on both physical environments and human health. During dust storms, particulate matter (PM) concentrations rise well above established air quality standards. This project focuses on the northern Negev as a representative case study for projected climate change scenarios, under which non-arid regions may be expected to experience increasingly frequent dust events.

Key research topics include:

  • Analyses of dust storms across the eastern Mediterranean
  • Development of low-cost sensors for real-time dust-PM monitoring in high-resolution (BGSense)
  • Spatial and temporal dust-PM distributions in outdoor and indoor environments
  • Atmospheric PM concentration dynamics along urban routes using mobile measurements
  • Forest canopy effects on atmospheric PM distributions due to dust storms
  • Health exposure risks associated with desert dust (in collaboration with Soroka Medical Center)

Sand ripples

Investigating aeolian sand ripples on Earth and Mars through a comprehensive, multi-disciplinary framework incorporating field observations, remote sensing, sand grain analyses wind tunnel experiments, and mathematical modeling.

Key topics include:

  • Evolution, transverse instability, and longevity of megaripples. Characteristics and formation processes of the armoring layer.
  • Size and shape of sand grains, shear flow distributions, sand ripple wavelength, morphologies of impact ripples
  • Aeolian sand sorting mechanism, aerodynamic sand ripples, coevolution of two-type ripples, multi-scale in aeolian sand ripples
Megaripples in Kasui