Sequoia Application Note SEQ-001-V1 Beam attenuation (c, [m-1]) is a critical inherent optical property (IOP) for oceanographers studying underwater visibility and suspended particles in the water column. Measuring beam attenuation in-situ requires transmissometers...
In the Beginning… In the 1960’s oceanographers started suggesting that sinking particles were a main source of food and nutrient delivery to deep-sea organisms. Researchers soon conceived and deployed sediment traps to investigate further (Wiebe...
Understanding particle behavior in the aquatic environment is fundamental to unraveling key processes in biogeochemistry, sediment transport, and ecosystem dynamics. Since 1995, Sequoia’s LISST and Hyper instruments have become important tools for quantifying...
When designing a transmissometer or a laser diffraction-based sensor for particle size analysis, an important consideration is the beam acceptance angle. A transmissometer measures a—generally small—portion of the forward-scattered light: light that...
…Wherein we’ll learn about the LISST-Tau and some of the ongoing developments at Sequoia. (Part XIII can be found here https://www.sequoiasci.com/article/the-history-of-sequoia-part-xiii/ ) In the fall of 2019 Sequoia got the opportunity to develop...