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Instrument: CTD Neil Brown Mark III
Description The Neil Brown Instrument Systems Mark III Conductivity, Temperature, Depth (CTD) instrument is an integral unit containing pressure, temperature and conductivity sensors with an optional dissolved oxygen sensor in a pressure-hardened casing. Developed in the 1970s, the Neil Brown CTD unit was able to digitize conductivity, temperature and pressure measurements at sufficient speeds to permit oceanographers to study 10 cm features at winch lowering speeds of 30 meters per minute. The most widely used variant in the 1980s and 1990s was the MK3B. The MK3C fitted with an improved pressure sensor to reduce hysteresis was developed to meet the requirements of the WOCE project. The instrument is no longer in production, but is supported (repair and calibration) by General Oceanics.
Datasets
Dataset Name
Brief Description
bottle
Merged hydrographic, nutrient and Carbon/Nitrogen
CTD-SIO
High resolution CTD and beam attenuation data
CTD_dh
Seward Johnson CTD casts, Georges Bank, 1995
CTD_ji
CTD for long term mooring cruises, GLOBEC Georges Bank, 1994-1999
CTD_rl
Process Study CTD data, Gulf of Maine/Georges Bank, 1994-1995.
hydrodata
NEFSC oceanographic profile (hydrography) data 1977 - present; northeast US continental shelf
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