The shaping of continental slopes by internal tides

被引：288

作者：

Cacchione, DA

Pratson, LF

Ogston, AS

机构：

[1] US Geol Survey, Coastal & Marine Geol MS999, Menlo Pk, CA 94025 USA

[2] Duke Univ, Nicholas Sch Environm & Earth Sci, Durham, NC 27708 USA

[3] Univ Washington, Seattle, WA 98195 USA

来源：

SCIENCE | 2002年 / 296卷 / 5568期

关键词：

D O I：

10.1126/science.1069803

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The angles of energy propagation of semidiurnal internal tides may determine the average gradient of continental slopes in ocean basins (similar to2 to 4 degrees). Intensification of near-bottom water velocities and bottom shear stresses caused by reflection of semi-diurnal internal tides affects sedimentation patterns and bottom gradients, as indicated by recent studies of continental slopes off northern California and New Jersey. Estimates of bottom shear velocities caused by semi-diurnal internal tides are high enough to inhibit deposition of fine-grained sediment onto the slopes.

引用

页码：724 / 727

页数：4

共 21 条

[1] Spatial variability in sedimentary processes on the Eel continental slope [J].