南海北部海洋雾状层特征及影响因素初步研究

张晓飞; 陈坚; 项立辉; 方建勇; 李东义; 朱亚超; 欧阳凯; 范彦斌

南海北部海洋雾状层特征及影响因素初步研究

1.
国家海洋局第三海洋研究所海岸与海洋环境地质开放实验室,福建厦门 361005;江苏省有色金属华东地质勘查局,江苏南京 210007
2.
国家海洋局第三海洋研究所海岸与海洋环境地质开放实验室,福建厦门 361005
3.
江苏省有色金属华东地质勘查局,江苏南京 210007

基金项目: 中国近海海洋环境综合调查与评价专项(908-01-CJ13；908-01-CJ18)；国家海洋局公益性行业科研专项——南黄海辐射沙脊群空间开发利用及环境生态评价(201005006)。

计量
- 文章访问数: 1363
- HTML全文浏览量: 23
- PDF下载量: 1170
- 被引次数: 0
出版历程
- 收稿日期: 2013-02-01

A preliminary study on the characteristics of marine nepheloid layers in the northern South China Sea and their influential factors

1.
Open Laboratory of Ocean and Coast Environmental Geology, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China;East China Geological & Mining Organization for Nonferrous Metals in Jiangsu Province, Nanjing 210007,China
2.
Open Laboratory of Ocean and Coast Environmental Geology, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China
3.
East China Geological & Mining Organization for Nonferrous Metals in Jiangsu Province, Nanjing 210007,China

摘要

摘要: 在粤东上升流区和南海北部陆架陆坡区共选取7条断面，通过分析水体的温度、盐度、密度、浊度、叶绿素浓度特征和悬浮体现场粒度平均粒径、体积浓度特征等，初步研究了南海北部海洋雾状层的特征及其受控机制。研究发现粤东上升流区底部雾状层普遍发育，在个别站位存在表层雾状层，高能的近岸浪流作用和来自港湾、河流的泥沙为表层雾状层和底部雾状层提供物源;南海北部陆架陆坡区底部雾状层也普遍发育，在珠江口外的内陆架和外陆架陆坡区表层雾状层比较常见，陆坡区中层雾状层比较发育，本区雾状层的物源主要来自珠江和台湾岛西南部河流的入海泥沙、海底沉积物以及生源颗粒物。南海北部底部雾状层的强度和扩散范围主要受水动力条件、河流入海物质的扩散和底质再悬浮等控制。
- 南海北部 /
- 海洋雾状层 /
- 影响因素
Abstract: Seven sections are studied in Yuedong(eastern Guangdong Province, China) upwelling area and the shelf-slope area of the northern South China Sea(NSCS). By analyzing the temperature, salinity, density, turbidity and chlorophyll concentration of seawater, and the mean grain size, volume concentration of suspended particles, the characteristics of the marine nepheloid layers in the NSCS and their influential factors are studied. The results show that the bottom nepheloid layer(BNL) develops widely in Yuedong upwelling area, and the surface nepheloid layer(SNL) exists at few sites. Particle matter in nepheloid layer is mainly from high energy coastal processes and bays, rivers in Guangdong Province.The BNL also develops widely in the shelf-slope area of the NSCS; the SNL often exists in the inner shelf off the Zhujiang River Estuary and the outer shelf-slope area; the intermediate nepheloid layer develops in the slope area. Particle matter in the nepheloid layer is mainly from the Zhujiang River and rivers in southwest Taiwan Island, seabed sediments and biogenous particle matter. The intensity and thickness of the BNL are mainly controlled by hydrodynamic conditions, dispersion of matter by river discharge, resuspension of fine deposites and so on.
- northern South China Sea /
- marine nepheloid layer /
- influencing factor

HTML全文

参考文献(35)

Eittreim S, Ewing M, Thorndike E M. Suspended matter along the continental margin of the North American Basin[J].Deep-Sea Research and Oceanographic Abstracts, 1969, 16(6): 613-624.

McCave I N. Nepheloid layers // Encyclopedia of Ocean Sciences, 2nd ed. 2009: 8-18.

Palanques A, Puig P, Guillén J, et al. Near-bottom suspended sediment fluxes on the microtidal low-energy Ebro continental shelf (NW Mediterranean)[J]. Continental Shelf Research, 2002, 22(2): 285-303.

Nyffeler F, Godet C H. The structural parameters of the benthic nepheloid layer in the northeast Atlantic[J]. Deep-Sea Research: Part A. Oceanographic Research Papers, 1986, 33(2): 195-207.

Ogston A S, Drexler T M, Puig P. Sediment delivery, resuspension, and transport in two contrasting canyon environments in the southwest Gulf of Lions[J]. Continental Shelf Research, 2008, 28(15): 2000-2016.

McCave I N. Local and global aspects of the bottom nepheloid layers in the world ocean[J]. Netherlands Journal of Sea Research, 1986, 20(2/3): 167-181.

McPhee-Shaw E E, Sternberg R W, Mullenbach B, et al. Observations of intermediate nepheloid layers on the northern California continental margin[J]. Continental Shelf Research, 2004, 24(6): 693-720.

Inthorn M, Mohrholz V, Zabel M. Nepheloid layer distribution in the Benguela upwelling area offshore Namibia[J]. Deep-Sea Research: Part Ⅰ. Oceanographic Research Papers, 2006, 53(8): 1423-1438.

Ruch P, Mirmand M, Jouanneau J M, et al. Sediment budget and transfer of suspended sediment from the Gironde estuary to Cap Ferret Canyon[J]. Marine Geology, 1993, 111(1/2): 109-119.

Oliveira A, Vitorino J, Rodrigues A, et al. Nepheloid layer dynamics in the northern Portuguese shelf[J]. Progress in Oceanography, 2002, 52(2-4): 195-213.

Thomsen L, van Weering T, Gust G. Processes in the benthic boundary layer at the Iberian continental margin and their implication for carbon mineralization[J]. Progress In Oceanography, 2002, 52(2-4): 315-329.

Sahl L E, Merrell W J, McGrail D W, et al. Transport of mud on continental shelves: evidence from the Texas shelf[J]. Marine Geology, 1987, 76: 33-43.

Naudin J J, Cauwet G. Transfer mechanisms and biogeochemical implications in the bottom nepheloid layer. A case study of the coastal zone off the Rhone River (France)[J]. Deep-Sea Research: Part Ⅱ. Topical Studies in Oceanography, 1997, 44(3/4): 551-575.

Liu J T, Lin H L. Sediment dynamics in a submarine canyon: a case of river-sea interaction[J]. Marine Geology, 2004, 207(1-4): 55-81.

吴自军, 彭晓彤, 王虎, 等. 海洋雾状层的成因及其对海洋碳循环过程的影响[J]. 海洋科学进展, 2004, 22(3): 364-369.

Ransom B, Shea K F, Burkett P J, et al. Comparison of pelagic and nepheloid layer marine snow: implications for carbon cycling[J].Marine Geology, 1998, 150(1-4): 39-50.

庞重光, 王凡. 东海悬浮体的分布特征及其演变[J]. 海洋科学集刊, 2004, 46: 22-31.

Milliman J D, Yang Z S, Meade R H. Flux of suspended sediment in the Changjiang Estuary // Proceedings of International Symposium on Sedimentation on the Continental Shelf with Special Reference to the East China Sea,Beijing: China Ocean Press,1983: 413-430.

杨作升, 郭志刚, 王兆祥, 等. 黄东海陆架悬浮体向东部深海区输送的宏观格局[J]. 海洋学报,1992,14(2): 81-90.

郭志刚, 杨作升, 张东奇, 等. 冬、夏季东海北部悬浮体分布及海流对悬浮体输运的阻隔作用[J]. 海洋学报, 2002, 24(5): 71-80.

曾明, 范德江, 孙效功, 等. 冬季黄河口及邻近海域悬浮体粒级组成和分布研究[J]. 海洋学报, 2010, 32(4): 129-138.

王爱军, 陈坚, 叶翔, 等. 台湾海峡西南部海域春季悬浮体及沉积物来源与输运机制[J]. 海洋学报, 2010, 32(6): 130-143.

Hung C C, Gong G C. POC/234Th ratios in particles collected in sediment traps in the northern South China Sea[J]. Estuarine, Coastal and Shelf Science, 2010, 88(3): 303-310.

冉莉华, 郑玉龙, 陈建芳, 等. 南海北部和中部硅藻通量季节性变化及其对季风气候的响应[J]. 海洋学报, 2011, 33(5): 139-145.

杨作升, 李云海. 太平洋悬浮体特征及近底雾状层探讨[J]. 海洋学报, 2007, 29(2): 74-81.

李云海. 中太平洋及东海陆架海洋雾状层特征及其影响因素研究 . 青岛: 中国海洋大学, 2007.

Milliman J D, Syvitski J P M. Geomorphic/tectonic control of sediment discharge to the ocean: the importance of small mountainous rivers[J]. Journal of Geology, 1992, 100: 525-544.

Liu Z F, Tuo S, Colin C, et al. Detrital fine-grained sediment contribution from Taiwan to the northern South China Sea and its relation to regional ocean circulation[J]. Marine Geology, 2008, 255: 149-155.

郝锵, 宁修仁, 刘诚刚, 等. 南海北部初级生产力遥感反演及其环境调控机制[J]. 海洋学报, 2007,29(3): 58-68.

蔡树群, 何建玲, 谢皆烁. 近10年来南海孤立内波的研究进展[J]. 地球科学进展, 2011, 26(7): 703-710.

潘爱军, 郭小刚, 许金电, 等. 粤东沿岸上升流对2006年夏季台风响应[J]. 中国科学, 2011, 41(10): 1530-1541.

Lorenzoni L, Thunell R C, Benitez-Nelson C R, et al. The importance of subsurface nepheloid layers in transport and delivery of sediments to the eastern Cariaco Basin, Venezuela[J]. Deep-Sea Research: Part Ⅰ.Oceanographic Research Papers, 2009, 56(12): 2249-2262.

袁圣强, 吴时国, 赵宗举, 等. 南海北部陆坡深水区沉积物输送模式探讨[J]. 海洋地质与第四纪地质, 2010, 30(4): 39-48.

高抒. 海岸与陆架沉积: 动力过程、全球变化影响和地层记录[J]. 第四纪研究, 2010, 30(5): 856-863.

Chronis G, Lykousis V, Georgopoulos D, et al. Suspended particulate matter and nepheloid layers over the southern margin of the Cretan Sea (N.E. Mediterranean): seasonal distribution and dynamics[J]. Progress in Oceanography, 2000, 46(2-4): 163-185.

施引文献

资源附件(0)

访问统计