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Wave-current bottom shear stresses and sediment re-suspension in the mouth bar of the Modaomen Estuary during the dry season
  • ISSN号:0253-505X
  • 期刊名称:《海洋学报:英文版》
  • 时间:0
  • 分类:TV148.3[水利工程—水力学及河流动力学] P343.3[天文地球—水文科学;天文地球—地球物理学]
  • 作者机构:[1]Center for Coastal Ocean Science and Technology Research, Sun Yat-sen University, Guangzhou 510275, China
  • 相关基金:The Program of International S&T Cooperation under contract No. 2010DFA24470; the National Science Foundation of China under contract No. 41376101; the Guangdong Provincial Science and Technology Planning Project under contract Nos 2012A030200002 and 2011B031100008
中文摘要:

根据在嘴块在 2012 年 2 月与波浪,水流,和沉积相关的测量数据 Modaomen 河口,有一个反复的方法的 Soulsby 公式被用于精明的底部砍压力(BSS ) 和他们沉积重新暂停上的效果。胀大导致 BSS 被发现了是 BSS 的最重要的部分。在这研究,在 wavecurrent 之间的关联系数砍应力和 SSC 是 0.86,并且在电流之间砍强调, SSC 仅仅是 0.40。SSC 的山峰与高度和 swell 的 BSS 一致。swell 是为沉积重新暂停的主要机制,并且沉积重新暂停上的潮汐的当前的效果是小的。SSC 的山峰在高潮汐的水平上被集中,并且洪水潮提高波浪砍压力和 SSC 接近底部。批评砍为在观察车站的沉积重新暂停的应力在 0.20 和 0.30 N/m 之间 < 啜 class= “ a-plus-plus ” > 2 。潮汐的水流太弱,不能煽动底部沉积进流动,但是 WCI (波浪水流相互作用) 对足够强壮重新推迟粗糙的沉积。

英文摘要:

On the basis of the measurement data pertaining to waves, current, and sediment in February 2012 in the mouth bar of the Modaomen Estuary, the Soulsby formulae with an iterative method are applied to calculating bottom shear stresses (BSS) and their effect on a sediment resuspension. Swell induced BSS have been found to be the most important part of the BSS. In this study, the correlation coefficient between a wavecurrent shear stress and SSC is 0.86, and that between current shear stresses and SSC is only 0.40. The peaks of the SSC are consistent with the height and the BSS of the swell. The swell is the main mechanism for the sediment re-suspension, and the tidal current effect on sediment re-suspension is small. The peaks of the SSC are centered on the high tidal level, and the flood tide enhances the wave shear stresses and the SSC near the bottom. The critical shear stress for sediment re-suspension at the observation station is between 0.20 and 0.30 N/m2. Tidal currents are too weak to stir up the bottom sediment into the flow, but a WCI (wave-current interaction) is strong enough to re-suspend the coarse sediment.

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期刊信息
  • 《海洋学报:英文版》
  • 主管单位:
  • 主办单位:中国海洋学会
  • 主编:潘德炉
  • 地址:北京海淀大慧寺路8号
  • 邮编:100081
  • 邮箱:hyxbe@263.net
  • 电话:010-62179976
  • 国际标准刊号:ISSN:0253-505X
  • 国内统一刊号:ISSN:11-2056/P
  • 邮发代号:82-285
  • 获奖情况:
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,美国化学文摘(网络版),荷兰文摘与引文数据库,美国剑桥科学文摘,美国科学引文索引(扩展库),英国科学文摘数据库,英国动物学记录
  • 被引量:331