The Nathaniel B. Palmer supports Antarctic oceanographic research funded by the US National Science Foundation. Ocean current profiles are routinely measured using hull-mount acoustic Doppler current profilers (ADCP).

Presently two instruments are installed, the original 150-kHz "narrowband" instrument (NB150), and a 38-kHz Ocean Surveyor (OS38), both of which were made by Teledyne RD Instruments. The OS38 can be operated simultaneously with two types of pings: uncoded pings ("narrowband" or NB), and coded pings ("broadband" or BB). The former provides better range but less vertical resolution than the latter. The two types of pings are processed independently and presented here as separate data sets. In addition to the velocity measurements, transducer temperature measurements are shown. These should be regarded as providing only very approximate and qualitative information; the transducers are installed in fluid-filled wells, the temperature of which is often substantially higher than that of the seawater outside.

Acquisition and processing of these shipboard ADCP measurements is funded by the National Science Foundation grants OPP-9816483, OPP-0337375, and OPP-0838714.

For each cruise we provide a set of links to data plots (left column), to the data location in the NODC JASADCP (center, if present), and to netcdf files with the ADCP data and predicted barotropic tides (right column).

LIST VIEW

1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
2009	2010	2011	2012	2013

2007

nbp0701 2006/12/22 to 2007/01/28 Lyttelton, NZ to McMurdo Station nb150 JASADCP netCDF top

nbp0702 2007/02/02 to 2007/03/23 McMurdo Station to Punta Arenas, Chile nb150 JASADCP netCDF top

nbp0703 2007/03/31 to 2007/05/04 Punta Arenas, Chile to Punta Arenas, Chile nb150 JASADCP netCDF top

nbp0709 2007/09/22 to 2007/10/29 Punta Arenas, Chile to Punta Arenas, Chile nb150 JASADCP netCDF os38bb JASADCP netCDF os38nb JASADCP netCDF top

nbp0710 2007/11/13 to 2007/12/07 Punta Arenas, Chile, Punta Arenas, Chile nb150 JASADCP netCDF top

nbp0711 2007/12/12 to 2008/01/01 Punta Arenas, Chile to Lyttelton, NZ nb150 JASADCP netCDF top