“Drifter (floating device)”的意思、由来-开放百科全书

词条

Drifter (floating device)

释义

Construction principle
Applications
Physical oceanography Biological oceanography
Types
See also
References

{{short description|An oceanographic instrument package floating freely on the surface to investigate ocean currents and other parameters like temperature or salinity}}

A drifter (not to be confused with a float) is an oceanographic device floating on the surface to investigate ocean currents and other parameters like temperature or salinity.^[1] Modern drifters are typically tracked by satellite,^[2] often GPS. They are sometimes called Lagrangian drifters since the location of the measurements they make moves with the flow. A major user of drifters is the Global Drifter Program.

Construction principle

The major components of a drifter include surface floats for buoyancy, underwater drogues to ensure the drifter follows the movements of the water and is unaffected by wind, instruments (e.g., data collecting instruments, transmitters to transmit the collected data, and GPS devices), and waterproof containers for instruments.^[3]^[4] Drifters are a technological evolution of ocean current analysis historically performed through drift bottle experiments, which in turn were built on the principle of a message in a bottle.^[5]

Applications

Physical oceanography

Drifters provide real-time information about ocean circulation. They make more accurate and frequent observations of surface current velocity than is possible from remote sensing measurements.

Biological oceanography

Drifters are frequently used to collect information on biological oceanography, such as transport of organisms.

Types

CODE drifter^[7]
SVP drifter

References

1. ^"What's a drifter?"
2. ^Global Drifter Program
3. ^"Drifters"
4. ^"Dissect a Drifter"
5. ^{{cite web |title=NWFSC's Own Message in a Bottle: Ocean Drifters and Tiny Tags Have Been Telling Stories for Decades |url=https://www.nwfsc.noaa.gov/news/features/bottle/bottle.cfm |publisher=NOAA's NWFSC |archiveurl=https://web.archive.org/web/20160724220756/https://www.nwfsc.noaa.gov/news/features/bottle/bottle.cfm |archivedate=July 24, 2016 |date=2013 |deadurl=no }}
6. ^{{cite web |title=Doing Their Part: Drifter Buoys Provide Ground Truth for Climate Data |url=https://www.climate.gov/news-features/climate-tech/doing-their-part-drifter-buoys-provide-ground-truth-climate-data |publisher=NOAA (climate.gov) |archiveurl=https://web.archive.org/web/20151219123621/https://www.climate.gov/news-features/climate-tech/doing-their-part-drifter-buoys-provide-ground-truth-climate-data |archivedate=December 19, 2015 |date=May 16, 2013 |deadurl=no }}
7. ^"Nearshore Circulation in the Bering Sea"

2 : Oceanographic instrumentation|Scientific equipment

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