The authors are grateful to Sergey Fomel and Tamas
Nemeth for their valuable input, and to Eric Verschuur for the
synthetic data. The authors also thank the anonymous reviewers and
associate editor for their comments that certainly helped improve this
letter. This publication was prepared using Madagascar
(rsf.sf.net), a package for reproducible computational
experiments, SPG
(cs.ubc.ca/labs/scl/spgl1), and Sparco
(cs.ubc.ca/labs/scl/sparco), a suite of linear operators and
problems for testing algorithms for sparse signal reconstruction.
This research was in part financially supported by
NSERC Discovery Grant
22R81254 of F.J.H. and by CRD Grant
DNOISE
334810-05 of F.J.H. and M.P.F., and was carried out as part of the
SINBAD
project with support, secured through
ITF, from the following organizations:
BG Group,
BP,
Chevron,
ExxonMobil, and
Shell.