C-band SAR observations of marginal ice zone rheology in the Labrador Sea

Author

Drinkwater, Mark R. ; Squire, Vernon A.

Author_Institution

Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA

Volume

27

Issue

5

fYear

1989

fDate

9/1/1989 12:00:00 AM

Firstpage

522

Lastpage

534

Abstract

Synthetic-aperture radar (SAR) imagery collected during the LIMEX´87 field program in the Labrador Sea is used to qualitatively interpret the deformation modes in play throughout the experiment. The ice cover exhibited two distinct rheologies separated by a clear line of shear: a nonlinear viscous outer regime, and a quasi-brittle inner regime. A single constitutive relation capable of effectively modeling both is unlikely within a plastic rate-independent formulation. Rate-dependent effects are discussed in relation to favoring brittle fraction in an otherwise ductile material

Keywords

oceanographic regions; remote sensing; rheology; sea ice; C-band SAR observations; LIMEX´87; Labrador Sea; NW Atlantic; deformation modes; ductile material; ice cover; marginal ice zone rheology; nonlinear viscous outer regime; quasi-brittle inner regime; shear; Aircraft; Data mining; Electromagnetic scattering; Kinematics; Radar imaging; Rheology; Satellites; Sea ice; Spaceborne radar; Synthetic aperture radar;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing, IEEE Transactions on

Publisher

ieee

ISSN

0196-2892

Type

jour

DOI

10.1109/TGRS.1989.35935

Filename

35935