Âé¶¹ÊÓÆµ areas Âé¶¹ÊÓÆµ areas undertaken by Professor Ian Guymer and his colleagues. You are here Home Mixing Studies Âé¶¹ÊÓÆµ areas 3D visualisation of recorded dye concentrations through pipe cross-section in accelerating flow. Pipes Longbridge Pond, June 2016. Vegetation and ponds A fluorometer installed in a manhole in Telford. Urban drainage Cyclops fluorometer in Porter Brook. Rivers and channels Wallingford Coastal Âé¶¹ÊÓÆµ Facility. Estuaries and coastal