Why use distributed sensing?
Fibre optic sensing is an innovative technology and there are no alternatives that are as cost-effective, technically feasible, and easy to apply in the environmental sector where most processes require high-precision measurements on scales ranging from centimetres to tens of kilometres.
Distributed acoustic (DAS) and temperature (DTS) systems offer high spatial and temporal profiling over large surfaces, long lengths and at locations where conventional point sensing is not applicable or cost effective.
Fibre optic sensing is also well suited for harsh environments and can support scientific work in the most inhospitable environments such as volcanic hot springs or glaciers with minimal environmental impact.
Advancements in DAS enabling new geophysical and geotechnical applications
The advancements in Silixa’s phase-coherent iDAS technology in the recent years have opened new perspectives for several geophysical and geotechnical applications.
The ability to collect high resolution acoustic data utilising dark fibers over very long ranges is invaluable. It enables continuous, remote seismic monitoring of the Earth’s near surface, even in highly populated areas, hence delivering better understanding of the subsurface. This not only offers more precise insight into the effects of climate change but also helps predict environmental hazards such as earthquakes, tsunamis or landslides.
In urban areas, continuous seismic monitoring can also be used to monitor hydrological systems, traffic flow, sediment transport in ports, and canal erosion.
Silixa’s DTS systems, the instruments of choice
Silixa’s distributed temperature sensing systems, with the highest accuracy and resolution performance in the market, have also been the instrument of choice for a number of environmental applications, such as soil moisture monitoring, atmospheric measurements, thermocline profile reproduction in lakes, seepage rate estimation in dams, groundwater-surface water interactions in streams, shallow thermocline environments, fractured rock characterisation and flow dynamics into boreholes.