FN Archimer Export Format PT J TI Airborne remote sensing of ocean wave directional wavenumber spectra in the marginal ice zone BT AF SUTHERLAND, Peter GASCARD, Jean-Claude AS 1:1;2:2; FF 1:PDG-ODE-LOPS-SIAM;2:; C1 Inst Francais Rech Exploitat Mer, Lab Oceanog Phys & Spatiale, Plouzane, France. Univ Paris 06, Lab Oceanog & Climat, Paris, France. C2 IFREMER, FRANCE UNIV PARIS 06, FRANCE SI BREST SE PDG-ODE-LOPS-SIAM UM LOPS IN WOS Ifremer jusqu'en 2018 copubli-france copubli-univ-france IF 4.253 TC 22 UR https://archimer.ifremer.fr/doc/00333/44454/44125.pdf https://archimer.ifremer.fr/doc/00333/44454/44126.pdf LA English DT Article AB Interactions between surface waves and sea ice are thought to be an important, but poorly understood, physical process in the atmosphere-ice-ocean system. In this work, airborne scanning lidar was used to observe ocean waves propagating into the marginal ice zone (MIZ). These represent the first direct spatial measurements of the surface wave field in the polar MIZ. Data were compared against two attenuation models, one based on viscous dissipation and one based on scattering. Both models were capable of reproducing the measured wave energy. The observed wavenumber dependence of attenuation was found to be consistent with viscous processes, while the spectral spreading of higher wavenumbers suggested a scattering mechanism. Both models reproduced a change in peak direction due to preferential directional filtering. Floe sizes were recorded using co-located visible imagery, and their distribution was found to be consistent with ice breakup by the wave field. PY 2016 PD MAY SO Geophysical Research Letters SN 0094-8276 PU Amer Geophysical Union VL 43 IS 10 UT 000378347500060 BP 5151 EP 5159 DI 10.1002/2016GL067713 ID 44454 ER EF