Dataset: CTD_hydrography
Deployment: AL9901

Georges Bank Broad-scale hydrography, 1995 - 1999
Principal Investigator: 
Dr David Mountain (National Marine Fisheries Service, NMFS)
BCO-DMO Data Manager: 
Ms Dicky Allison (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Broad-scale Hydrography, 1995 - 1999

If you encounter any questionable values or have other questions, contact: David Mountain National Marine Fisheries Servce, NEFC Woods Hole, MA 02540 voice: 508 495 2000 fax: 508 495 2258 email:

File Descriptions:

At level 1 in the comments field, the user has three options for selecting CTD profile data available from this cruise:

mark5CTD link - Links the user to the Neil Brown Mark-5 CTD profiles. The Mark-5 profiler, has a higher sampling rate then the SeaBird SEACAT, was instrumented with an expanded suite of sensors and deployed almost exclusively at GLOBEC Standard stations.

seabirdCTD link - Links the user to the SeaBird SEACAT profiler deployed with the bongo plankton net tow system at Standard and Intermediate stations. The upcast portion of the tow is the most reliable and that is what is reported here. These profiles do not contain the parameters: light transmission, fluorescence, and scalar par. Users working with the plankton data may want to work with this data set exclusively.

primary link - Links the user to the best hydrography coverage available for the cruise. The "primary version", in most cases, is a composite of both the Mark-5 and SEACAT CTD casts. These casts have been extracted from their respective cruise files and sorted by time. As a result, the reported cast and station numbers are frequently duplicated and random in order. When present, SeaBird profiles are identified with a one hundred series cast number to distinguish from a Mark-5 profile, however, this convention is inconsistent and does not always appear in all cruises (primary link only).

Prepared by: Maureen Taylor, NMFS/Woods Hole, 2/7/1996
last updated: 19 Nov. 2004; gfh

More information about this dataset deployment