基于ADP-XR和OBS-3A的潮滩水文泥沙过程研究 以胶州湾北部红岛潮滩为例
Observation of hydrographic and sedimentary processes over an intertidal flat based on ADP-XR and OBS-3A Taking Hongdao Island intertidal flat in the north of Jiaozhou Bay as an example
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摘要: 于2004年8月17~24日在胶州湾北部红岛潮滩上用OBS-3A和ADP-XR观测了水深、浊度、水平和垂直流速、回声强度、波浪、盐度、水温等水文泥沙要素,同时采集了悬沙和底沙样品作粒度分析.结果和结论为:(1)潮流动力较弱,表层和近底层最大流速分别只有31和26cm/s;(2)弱潮流动力导致潮周期大部分时间的悬沙浓度小于30mg/dm3,但浅水阶段近底悬沙浓度为100~1000mg/dm3;浅水阶段的短暂高悬浮泥沙浓度和其余长淹没时段的低悬沙浓度共同构成悬沙浓度的“U”形潮周期过程线;(3)悬沙浓度的垂直成层分布主要发生在潮周期的深水阶段和平静天气;(4)由于潮流弱和风浪的干扰,悬沙浓度未呈现大小潮周期的变化规律;(5)水体盐度为23.6~29.5;(6)淹没期的温度(21.4~28.6℃)比出露期的(19.3~30.9℃)稳定,温度极高值出现在午后出露期,而极低值出现在凌晨出露期;(7)“浅水效应”是弱动力潮滩泥沙运动的重要特点.Abstract: Turbidity,horizontal and vertical current speeds,echointensity,water depth,salinity and temperature were observed using OBS-3A and ADP-XR during a spring-neap period,on 17~24 August 2004.Meanwhile,suspended and bed sediments were sampled for grain size analysis.On the basis of calibration of turbidity with in situ sediment samples and regression between the turbidity and the echointensity,the turbidity and the echointensity were converted to a suspended sediment concentration (SSC).The SSC is found to be generally low.For most of the tidal duration,the near bottom(30 cm abovebed)SSC is less than 30 m g/dm3.Because mud grains are abundant in the bed sediments,the low SSC is mainly at tributed to low water energy especially weak currents.The near bottom current speed is generally less than 15 cm/s due to the narrow ness of the intertidal zone(500 m in width).However,the high SSC ranging f rom 100 mg/dm3 to greater than 1 000 mg/dm3 occurs during the shallow and short stages mainly due to the action of waves.As a result,the time series of near-bottom SSC is "U"-shaped during each tidal cycle.The vertical stratification of SSC tends to occurduring deep stages and calm weathers.The SSC does not show spring-neap cyclicity,which is at tributed to the int erference of waves.It is concluded that resuspension/settling over the study intertidal flat is governed by waves.
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LINDSAY P,BALLS P W,WEST J R.Influence of tidal range and river discharge on suspended particulate matter fluxes in the Forth Estuary (Scotland)[J].Estuarine,Coastal and Shelf Science,1996,42:63-82. KAWAANISI K,YOKOSI S.Characteristics of suspended sediment and turbulence in a tidal boundary level[J].Continental Shelf Research,1997,17:859-875. SCHOELLHAMER D H.Variability of suspended-sediment concentration at tidal to annual time scales in San Francisco Bay,USA[J].Continental Shelf Research,2002,22:1 857-1 866. BASSOULLET P,HIR P L,GOULEAU D,et al.Sediment transport over an intertidal mudflat:field investigations and estimation of fluxes within the "baie de marennes-Oleron" (France)[J].Continental Shelf Research,2000,20:1635-1653. RIDDERINKHOF H,van der HAMA R,van der LEE W.Temporal variations in concentration and transport of suspended sediments in a channel-flat system in the Ems-Dollard estuary[J].Continental Shelf Research,2000,20(12-13):1 479-1 493. GREEN M O,VINCENT C E,McCAVE I,et al.Storm sediment transport:observations from the British North Sea shelf[J].Continental Shelf Research,1995,15 (8):889-912. GARGETT A,WELLS J,TEJADA-MARTINEZ A E,et al.Langmuir supercells:a mechanism for sediment resuspension and transport in shallow seas[J].Science,2004,306:1 925-1 928. YANG Sui-lun,ZHANG Jing,ZHU Jun.Response of suspended sediment concentration to tidal dynamics at a site inside the mouth of an inlet:Jiaozhou Bay (China)[J].Hydrology and Earth System Sciences,2004,8(2):170-182. RIDDERINKHOF H.Sediment transport in intertidal areas[A].EISMA D.Intertidal Deposits:River Mouths,Tidal Flats,and Coastal Lagoons[M].Boca Raton,Florida:CRC Press,1998.345-362. 钱宁,万兆惠.泥沙运动力学[M].北京:科学出版社,1991. CARTER W R.Coastal Environments[M].San Diego:Academic Press,1988.617. TRENHAILE A S.Coastal Dynamics and Landforms[M].Oxford:Clarendon Press,1997.365. CHRISTIE M C,DYER K R.Measurements of the tubid tidal edge over the Skeffling mudflats[A].BLACK K S,PATERSON D M,CRAMP A.Sedimentary Processes in the Intertidal Zone:Geological Society Special Publication 139[C].London:The Geological Society,1998.45-55 WHITEHOUSE R I S,MITCHENER H J.Observations of the morphodynamic behaviour of an intertidal mudflat at different time scales[A].BLACK K S,PATERSON D M,CRAMP A.Sedimentary Processes in the Intertidal Zone:Geological Society Special Publication 139[C].London:The Geological Society,1998.255-271. DYER KR,CHRISTIE M C,FEATES N.An investigation into processes influencing the morphodynamics of an intertidal mudflat,the Dollard Estuary,the Netherlands:I.Hydrodynamics and Suspended Sediment[J].Estuarine,Coastal and Shelf Science,2000,50:607-625. UNCLES R J,STEPHENS J A.Observations of currents,salinity,turbidity and intertidal mudflat characteristics and properties in the Tavy Estuary,UK[J].Continental Shelf Researc,2000,20:1 531-1 549. ALVAREZA L G,JONES S E.Factors influencing suspended sediment flu in the upper gulf of Califomia[J].Estuarine,Coastal and Shelf Science,2002,54:747-759. 国家海洋局第一海洋研究所.胶州湾自然环境[M].北京:海洋出版社,1984. 高抒,汪亚平.胶州湾沉积环境与潮汐汊道演化特征[J].海洋科学进展.2002,20(3):52-59. YANG Shi-lun.Sedimentation on a growing intertidal island in the Yangtze River Mouth[J].Estuarine,Coastal and Shelf Science,1999,49:401-410. 杨世伦,陈启明,朱骏.半封闭海湾潮间带部分围垦后纳潮量计算的商榷——以胶州湾为例[J].海洋科学,2003,27(8):43-46. 李凡,张铭汉,宋怀龙.沉积环境[A].刘瑞玉.胶州湾生态学和生物资源[M].北京:科学出版社,1992.4-19. 汪亚平,高抒,李坤业.用ADCP进行走航式悬沙浓度测量的初步研究[J].海洋与湖沼,1999,30(6):758-763. KRUMBEIN W C.Size frequency distributions of sediments[J].Journal of Sedimentary Petrology,1934,4:65-77. 沈焕庭,茅志昌,朱建荣.长江河口盐水入侵[M].北京:海洋出版社,2003.175. KRONE R B.Aggregation of suspended particles in estuaries[A].KJERFVE B.Estuarine Transport Processes[M].Columbia:University of South Carolina Press,1978.177-190. GIBBS R J.Coagulation rates of clay minerals and natural sediments[J].Journal of Sedimentary Petrology,1983,53:1 193-1 203. DYER K R.Coastal and Estuarine Sediment Dynamics[M].Chichester:John Wiley &Sons,1986. 陈邦林,吴玲,邱佩英.长江口南港南槽地区悬移质絮凝机理研究[A].陈吉余,沈焕庭,恽才兴.长江河口动力过程和地貌演变[M].上海:上海科学技术出版社,1988.276-282. YANG Shi-lun,MENG Yi,ZHANG Jing,et al.Suspended Particulate Matter in the Jiaozhou Bay:Properties and Variations in Response to Hydrodynamics and Pollution[J].China Science Bulletin,2004,49(1):91-97. SCHUBEL J R.Turbidity maximum of the northern Chesapeake Bay[J].Science,1968,161:1 013-1 015. 汪亚平.胶州湾及邻近海区沉积动力学.中国科学院博士学位研究生学位论文.2000. 胡泽建,边淑华,赵可光,等.半封闭海湾淤积灾害预测关键技术研究——以胶州湾为例.青岛:国家海洋局第一海洋研究所,2000. GORDON R L.Acoustic Doppler Currents Profiler Principles of Operation:A Practical Primer.2nd ed.RD Instruments USA,1996.29-32.
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