ITP58 Data Description

The ITP profiler was configured to operate on a standard sampling schedule of 2 one-way profiles between 7 and 750 m depth each day.  In the surface package, the GPS receiver was powered hourly to obtain locations, and buoy temperature and battery voltage status were recorded.

For the first 7 months after deployment in August 2012, the buoy drifted predominantly north toward the Lomonosov Ridge, then east and south across the Eurasian Basins.  Late in November 2013, the anchor at the bottom of the tether dragged over the Yermak Plateau northwest of Spitsbergen and all subsequent profile data were fouled and unusable.  On December 9, 2013 (over 15 months after deployment) the profiler ceased communicating with the surface package presumably due to separation of the tether as a result of the anchor dragging on the shallow bathymetry. The surface package continued to broadcast locations for another 18 months as it drifted through Fram Strait and with the East Greenland current through the Denmark Strait.  The last location transmitted from ITP58 in June 2015 was east of the southern tip of Greenland.

The plots to the right are of the final, calibrated, edited data (as opposed to the raw data presented on the active instrument pages).

See the Data Products tab to the left for descriptions of the three levels (I, II, III) of data processing and to access all data.

ITP 58 data can also be found at the links below:

Level II hourly buoy location data in ASCII format: itp58rawlocs.dat

Level III 1-Hz processed profile data in MATLAB format: itp58cormat.tar.Z and itp58cormat.zip

Level III 1-db bin-averaged processed profile data in MATLAB format: itp58final.mat
Level III 1-db bin-averaged processed profile data in ASCII format: itp58final.tar.Z and itp58final.zip