摘要: Ice-coupled waves travelling beneath solid ice sheets experience decay arising from both scattering (reflections by inhomogeneities) and damping (a consequence of the viscoelasticity in sea-ice energy loss water). Scattering have been examined isolation but rarely together, which is necessary if a model to simulate reality accurately. This deficiency addressed herein. We describe that assimilates these mechanisms, used reproduce under two dimensional variable thickness. Damping more significant for lower period causes reduction observed rate.
onepetro.org参考文章(10)
Vernon A. Squire, Tony W. Dixon, An Analytical Model For Wave Propagation Across a Crack In an Ice Sheet International Journal of Offshore and Polar Engineering. ,vol. 10, pp. 652- 655 ,(2000)
Timothy D. Williams, Vernon A. Squire, Oblique scattering of plane flexural–gravity waves by heterogeneities in sea–ice Proceedings of The Royal Society A: Mathematical, Physical and Engineering Sciences. ,vol. 460, pp. 3469- 3497 ,(2004) , 10.1098/RSPA.2004.1363
D. V. EVANS, R. PORTER, Wave scattering by narrow cracks in ice sheets floating on water of finite depth Journal of Fluid Mechanics. ,vol. 484, pp. 143- 165 ,(2003) , 10.1017/S002211200300435X
V.A. Squire, T.D. Williams, Wave propagation across sea-ice thickness changes Ocean Modelling. ,vol. 21, pp. 1- 11 ,(2008) , 10.1016/J.OCEMOD.2007.10.006
V.A. Squire, Of ocean waves and sea-ice revisited Cold Regions Science and Technology. ,vol. 49, pp. 110- 133 ,(2007) , 10.1016/J.COLDREGIONS.2007.04.007
Hyuck Chung, C. M. Linton, Reflection and transmission of waves across a gap between two semi-infinite elastic plates on water Quarterly Journal of Mechanics and Applied Mathematics. ,vol. 58, pp. 1- 15 ,(2005) , 10.1093/QJMAMJ/HBH011
G. L. Vaughan, V. A. Squire, Scattering of ice coupled waves by a sea-ice sheet with random thickness Waves in Random and Complex Media. ,vol. 17, pp. 357- 380 ,(2007) , 10.1080/17455030701250467
G.L. Vaughan, T.D. Williams, V.A. Squire, Perfect transmission and asymptotic solutions for reflection of ice-coupled waves by inhomogeneities Wave Motion. ,vol. 44, pp. 371- 384 ,(2007) , 10.1016/J.WAVEMOTI.2007.01.001
J P Dugan, P Wadhams, P J Rottier, A K Liu, V A Squire, Of Ocean Waves and Sea Ice Annual Review of Fluid Mechanics. ,vol. 27, pp. 115- 168 ,(1995) , 10.1146/ANNUREV.FL.27.010195.000555
Timothy D.C. Williams, Reflections on ice : scattering of flexural gravity waves by irregularities in Arctic and Antarctic ice sheets University of Otago. ,(2006)