Auxiliary material for Paper 2010GL044921

Seals map bathymetry of the Antarctic continental shelf

Laurie Padman 
Earth and Space Research, Corvallis, Oregon, USA

Daniel P. Costa 
Ecology and Evolutionary Biology, University of California, 
Santa Cruz, California, USA

S. Thompson Bolmer 
Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA

Michael E. Goebel 
Antarctic Ecosystem Research Division, SWFSC, 
National Marine Fisheries Service, NOAA, 
La Jolla, California, USA

Luis A. Huckstadt 
Ocean Sciences, University of California, Santa Cruz, California, USA

Adrian Jenkins 
British Antarctic Survey, Cambridge, UK

Birgitte I. McDonald 
Scripps Institution of Oceanography, La Jolla, California, USA

Deborah R. Shoosmith
British Antarctic Survey, Cambridge, UK



Padman, L., D. P. Costa, S. T. Bolmer, M. E. Goebel, L. A. Huckstadt, A. 
Jenkins, B. I. McDonald, and D. R. Shoosmith (2010), Seals map bathymetry of the 
Antarctic continental shelf, Geophys. Res. Lett., 37, L21601, 
doi:10.1029/2010GL044921.

Introduction

Auxiliary material for this article contains a figure showing differences
between seal-derived bathymetry and the TOPO12.1 topography grid, and 
between updated trackline bathymetry and TOPO12.1.

1. 2010gl044921-fs01.tif
Figure S1. (a) Difference (in m) between depths of seal dives interpreted as 
to the seabed (see section 3) and depth from the TOPO12.1 bathymetry grid 
(see section 4). Seal dives are only shown where TOPO12.1 water depth is 
<1200 m. (b) Difference (in m) between updated trackline data set and 
TOPO12.1.  For both panels, color scale are the same, with red shades 
indicating measurements shallower than TOPO12.1 and blue shades indicating 
values deeper than TOPO12.1.  The black contour on each panel shows the 
1000m isobath from TOPO12.1. Identified features 1-6 are described in 
section 4.