hydrocast
/ˈhaɪdroʊˌkæst/
noun
- A method of collecting water samples from different depths in the ocean or a lake for scientific study.
- The data from the hydrocast showed a layer of cold, nutrient-rich water near the bottom.
- The research team performed a hydrocast to measure temperature and salinity at various depths.
- Each hydrocast brought up water from 500 meters below the surface for analysis.