Generic Vessel
Generic Vessel

The Acoustic Doppler Current Profiler (ADCP) is an in situ acoustic sensor used to measure ocean currents. ADCP utilizes the Doppler effect to detect sound waves, providing measurements of the speed and direction of currents throughout the water column. It can be easily mounted on various water platforms such as ships, buoys, and autonomous underwater vehicles (AUVs). Additionally, it can be deployed on the seafloor to deliver profile measurements of ocean currents.

The LISST Submersible Particle Size Analyzer is a water-based in situ particle analyzer manufactured by Sequoia Scientific. It is a laser-diffraction-based particle size analyzer that measures suspended particle size and concentration in aquatic environments, such as the ocean, rivers, lakes, and streams. It provides particle size distribution from 1 μm to 500 μm in 36 size ranges. It has a maximum operating depth of 600 m at a resolution of 0.01 m and a typical sampling rate of 1 Hz. The laser within the instrument operates at 670 nm and has an optical path of 25 mm.

Spectrometers are instruments used to separate and analyze the spectral components of a substance. They usually measure the electromagnetic radiation that has been reflected, absorbed, or transmitted by the physical sample. Spectrometers can operate across the ultraviolet to infrared spectrum. The most common types include optical, nuclear magnetic resonance, and mass spectrometers. They can be used on aircraft, research vessels, vehicles, and other ground-based platforms.

Turbidity sensors are in situ water quality sensors that measure the cloudiness, or turbidity, of a liquid caused by suspended particles. Turbidity sensors are nephelometers that emit light and detect the amount of light scattered by particles within the water sample. These sensors are used for assessing sediment levels and pollution in rivers and lakes, and monitoring the water quality of drinking water and industrial processes.

Singlebeam Echo Sounder System (SBES) is an in situ acoustic sensor used to measure the water depth to the seafloor. SBES determines the water depth by measuring the travel time of a sonar signal in two directions. SBES operate at a single frequency in the 24-33 kHz range for deeper water surveys and the 200-400 kHz range for shallow water surveys. SBES can operate in water depths under 100 meters up to 6,000 meters.