CORMP maintains four types of mooring stations in Long and Onslow Bays :
- subsurface Quad-pod
- trawl-resistant bottom cage
- pier based “volcano” station
- real-time buoys.
OB27 Subsurface Quad-pod
CORMP has maintained a presence at OB27 since April 2000. At that time we placed a 2 meter tall Quad-pod in 30 meters of water (approximately 99 ft deep). The quad holds a 600 kHz upward-looking ADCP, a microcat CT logger that measures temperature, conductivity and pressure, and a 1.5 MHz Pulse-Coherent Acoustic Doppler Profiler. We have since added a SCUFA to measure fluorescence and turbidity.
The CORMP operations team visits the Quad monthly to recover instruments and take them back to the lab for downloading. The instruments are returned to the Quad as soon as possible so that data can be continuously collected.
In collaboration with our NCSU partners, we have maintained several moored stations on the continental shelf, since April 2002. Each moored station consists of instrumentation in a trawl-proof cage on the bottom, with the possible addition of other instruments on a taut-wire line going up into the water column. The trawl-proof cage contains an upward looking wave-upgraded ADCP and a Microcat or Seacat CT logger.
Stations OB1 and OB3 are in shallow (~20 m) water. OB2 and OB4 are in deeper (~40 m) water. The CORMP operations team visits each of the stations every 3 months to service the equipment, clean the cages of biofouling organisms, and take the instruments back to the lab to be downloaded and cleaned.
Real-time Pier Moorings
CORMP has deployed a “volcano” style cage approximately 1000 ft off the end of Johnny Mercer’s Pier in Wrightsville Beach , NC . The volcano houses a wave-upgraded ADCP and CT logger. With these instruments CORMP can provide real-time information to the public on currents, wave height and period, water temperature and salinity. The instruments are hard-wired back to the pier for continuous data flow to the public.
CORMP plans to deploy a similar suite of instruments off Ocean Crest Pier, Oak Island, NC by the end of summer 2005. This deployment will also include a weather station at the end of the pier.
CORMP is in the process of deploying 4 real-time weather and sea state buoys in Onlsow Bay, NC. The first two buoys were deployed in collaboration with NC State University – one is located approximately 5 miles offshore from the Masonboro Inlet Sea Buoy and the other is 27 miles offshore from the sea buoy. Both buoys provide basic marine weather observations, such as air temperature, wind direction and speed, humidity, and solar radiation. Along with marine weather, the buoys transmit oceanographic information on current speed and direction, water temperature, turbidity and salinity.
In association with CORMP and the Camp Lejune Marine Corp Base, the National Data Buoy Center (NDBC) deployed a buoy 4 miles off of Jacksonville, NC. CORMP will deploy another NDBC buoy 27 miles out of Jacksonville , NC during winter 2005/2006.