CB-50 Data Buoy
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Tech Specs
Hull Height: 12.0” (30.48cm)
Center Hole Inner Diameter: 5.5” (13.97cm)
Tower Height: 10.0" (25.4cm)
Weight: 35 lb (16kg)
Net Buoyancy: 50 lb (23kg)
Hull Material: Cross-linked polyethylene foam with polyurea coating & stainless steel deck
Hardware Material: 316 stainless steel
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Case Studies
Cellular Data Buoys Predict E. Coli
The Chicago Park District is one of the largest municipal park managers in the nation with 8,100 acres of green space spread across 580 different parks. It also manages many indoor facilities, historical landmarks and beaches. At eight of its most popular beaches, the District has used cellular data buoys, for four years, in an effort to more quickly predict E. Coli levels that could necessitate beach closures. Chicago Park District has worked with NexSens Technology to source the equipment needed for the monitoring program, including buoys, data loggers, various water quality sensors and web datacenter services. The network of cellular data buoys began operating in the early 2010s as a pilot program and has since grown into a large-scale operation for city managers each summer. Along with its expansion, various research efforts have sampled its data for use in scientific studies to affirm the effectiveness of its E. Coli prediction modeling approach.
Understanding Lake Erie Walleye Hatches
Lake Erie is described by many as the "walleye capital of the world," but dwindling populations of the fish pose a concern for Great Lakes fishermen. The region's multi-billion-dollar commercial and recreational fishing industry relies heavily on walleye, and the last major walleye hatch in Lake Erie occurred in 2003. Hatch sizes since then have been, at best, below average. A six-year period of substandard spawning is unprecedented; worse yet, many worry that the lake’s walleye population has been on the decline since long before 2003. The Ohio Department of Natural Resources’ Division of Wildlife Sandusky Fish Research Unit is exploring whether walleye spawns are affected by lake currents. Aiding in the study are two current-tracking data buoys, positioned proximate to reefs in the lake where walleye breed. The investigation, part of a multi-agency project, will further examine findings from research by Michael Jones at Michigan State University's Department of Fisheries and Wildlife. Jones' research, which uses wind velocities over the lake to approximate lake currents, indicates that the success of a hatch seems to correspond with whether current is pushing toward or away from shore. This is largely because distance to shore dictates how warm the waters are, and temperature affects incubation and larvae growth, explains Fisheries Biologist Travis Hartman from the Sandusky Fish Research Unit.
Predictive E.coli Modeling
The Tom Ridge Environmental Center is located at the entrance to Presque Isle State Park in Erie, Penn. TREC is open year-round, offering visitors insight to what they can expect at Presque Isle State Park and the surrounding Great Lakes Region. TREC also serves as a center for research, contributing to conservation efforts, promoting environmental awareness, and helping to preserve the unparalleled beauty of Presque Isle. The Regional Science Consortium is one of the many educational and research organizations establishing itself at the center. The collaborative, non-profit consortium coordinates educational and research projects for Lake Erie and the upper Ohio River Basin. The consortium's objective is to have all branches of science working in collaboration to exchange expertise, equipment, and ideas while sharing researchers and students as well. One of the consortium's most recent research tools is a multi-parameter weather network that utilizes NexSens data loggers.