The design and testing of small,low-cost GPS-tracked surface drifters |
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Authors: | Email author" target="_blank">Jay?AustinEmail author Sten?Atkinson |
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Institution: | (1) CTOH/LEGOS, 18 av. E. Belin, 31401 Cedex 9 Toulouse, France |
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Abstract: | We have designed and constructed drifters appropriate for use in regions characterized by limited horizontal extent. The drifters
follow the upper 30 cm of surface currents, but can be modified to follow water at any depth. The drifters store their latitude
and longitude internally, and transmit their current latitude and longitude to a handheld Global Positioning System (GPS)-radio
receiver, making their location and subsequent retrieval straight forward A field test of six drifters in Hog Island Bay,
Virginia, United States, in August 2003 was successful and led to several design improvements. With simple construction and
a total materials cost of under U.S.$200 this design will make drifters an accessible part of interdisciplinary experiments,
provide a potentially valuable educational tool, and make experiments that require large numbers of drifters more cost-effective. |
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