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Ocean tools
| Term | Definition |
|---|---|
| gravity core | samples less than 10 meters deep and pulls out a tube of sediment to explore historical conditions. |
| secchi disk | used to estimate the transparency or turbidity of the water using a black and white disc |
| dip net | collecting specimens floating and swimming off a dock and/or side of vessel with a quick scoop |
| sediment sieves | analyzes grain sediment size to determine type and erosion possibilities |
| phytoplankton nets | triangular nets for collecting the diverse photosynthesizers within the water column |
| neuston net | large mesh net for capturing larger zooplankton often along the surface as it is towed behind the boat |
| niskin bottle | Used to collect water samples from discrete depths where they can be analyzed for phophates, nitrates, silicates and other |
| shipek grab | samples sediment in soft ooze, clay, sand or gravel bottoms that are relatively flat. |
| hydrophone | takes acoustic measurements by lowering it down into water column |
| dredge | Drag behind the boat to collect specimens from the ocean bottom |
| global positioning system | GPS: uses satellites to determine exact location |
| current meter | instrument for measuring the rate, force and direction of flowing water under the surface |
| trawl net | using otter boards to spread out the net, it captures large samples from different depths and often the bottom |
| hydrometer | used to measure the densities of the water |
| ROV | remotely operated vehicle: robotic vehicle operated by a person aboard the surface vessel while it is unoccupied |
| Drift bottle | Charts ocean currents by floating around in the water with a sensor |
| plankton net | cone shaped net with a collecting base at the base |
| refractometer | sued to measure salt concentration by looking at light bending as it pass through the water column |
| Self contained underwater breathing apparatus | SCUBA; has tank of air and regulator that allows a person to explore the water without assistance from the boat |
| grab sampler | used to scoop up a piece of the ocean floor |
| nansen bottle | collects sub surface water samples using a tripping mechanism to flip and collect the water |
| salinometer | hydrometer that measures the density to determine salt concentration of the water |
Created by:
whames4
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