Adare Basin Sonobuoy Data
Please cite as:
Adare Basin Sonobuoy data (2007), Sonobuoy Data from the Adare Basin, Antarctica. Caltech. Dataset. doi:10.7909/C37P8W9P
The data described here were acquired during the NBP0701 Cruise aboard the icebreaker Nathaniel B. Palmer from Dec., 2006 to Jan, 2007.
The sonobuoy data were part of a geophysical survey in the Adare Trough region of the Ross Sea, Antarctica. In addition,
MCS, gravity, magnetics, bathy and other data types were also acquired. These data are available from the Marine Geoscience
Data System at the URL
MCS Data Plots
Plots of the MCS lines recorded as part of this experiment are shown
This study was supported by the National Science Foundation under awards OPP0440959 (PI S. Cande)
and OPP0440923 (PIs J. Stock and R. Clayton). We thank Captain Mike Watson, the crew, and the technical staff aboard the Palmer.
Selvans, M.M., J.M. Stock, R.W. Clayton, S.C. Cande, and F.J. Davey,
"Crustal velocity structure in the northern Ross Sea: From the Adare Basin onto the continental shelf",
U.S. Geol. Surv. Open-File Rep., 2007-1047: 4, 2007, DOI 10.3133/of2007-1047.
Granot, R., S.C. Cande, J.M Stock, F.J. Davey, and, R.W. Clayton,
"Postspreading rifting in the Adare Basin, Antarctica: Regional tectonic consequences",
Geochem. Geophys. Geosyst., 11(8): Q08005, 2010, DOI 10.1029/2010GC003105.
Selvans, M., R. Clayton, J. Stock, and R. Granot, (2012),
Using overlapping sonobuoy data from the Ross Sea to construct s 2D deep
crustral velocity model,
J. Geophys. Res., 33, pp 17-32, doi:10.1007/s11001-011-9143-z.
Selvans, M., J. Stock, R. Clayton, S. Cande, F. Davey, and R. Granot, Deep crustal structure of the Adare and Northern Basins,
Ross Sea, Antarctica, from sonobuoy data (2014), EPSL, 405, pp220-230.
Google Earth kml files:
The data available below were extracted from the MCS data (sonobouys are auxiliary channels) that is archived
in SEGY format at the MGDS. These data are in a custom format that is best described by the structure
isis.h . Each file consists of receiver gatherer (all the useable records by a single sonobuoy),
with each trace preceded by the header and followed by 4000 'float' data samples in IEEE format. The
x,y,z coordinates in the header are in a local cartesian grid like UTM. Thesw are accurate for computing
offsets and sonobuoy-ship azimuths. The headers also include lat-lon coords in WGS84.
A description of the seismic part of NBP0701 Cruise can be found
A number of the sonobuoys drift while they are recording. A procedure for correcting for this is described
in the Selvans et al (2012) reference. Not all the sonobuoys recorded are presented here - only the ones used
in the referenced studies. These however tend to be the best ones.
Table of Sonobuy Locations, Plots, Raw Data