收藏本站
收藏 | 投稿 | 手机打开
二维码
手机客户端打开本文

Submarine fans: A critical retrospective(1950-2015)

G.Shanmugam  
【摘要】:When we look back the contributions on submarine fans during the past 65 years(1950-2015),the empirical data on 21 modern submarine fans and 10 ancient deep-water systems,published by the results of the First COMFAN(Committee on FANs) Meeting(Bouma et al.,1985a),have remained the single most significant compilation of data on submarine fans.The 1970 s were the "heyday" of submarine fan models.In the 21 st century,the general focus has shifted from submarine fans to submarine mass movements,internal waves and tides,and contourites.The purpose of this review is to illustrate the complexity of issues surrounding the origin and classification of submarine fans.The principal elements of submarine fans,composed of canyons,channels,and lobes,are discussed using nine modern case studies from the Mediterranean Sea,the Equatorial Atlantic,the Gulf of Mexico,the North Pacific,the NE Indian Ocean(Bay of Bengal),and the East Sea(Korea).The Annot Sandstone(Eocene-Oligocene),exposed at Peira-Cava area,SE France,which served as the type locality for the "Bouma Sequence",was reexamined.The field details are documented in questioning the validity of the model,which was the basis for the turbiditefan link.The 29 fan-related models that are of conceptual significance,developed during the period 1970-2015,are discussed using modern and ancient systems.They are:(1) the classic submarine fan model with attached lobes,(2) the detached-lobe model,(3) the channel-levee complex without lobes,(4) the delta-fed ramp model,(5) the gully-lobe model,(6) the suprafan lobe model,(7) the depositional lobe model,(8) the fan lobe model,(9) the ponded lobe model,(10) the nine models based on grain size and sediment source,(11) the four fan models based on tectonic settings,(12) the Jackfork debrite model,(13) the basin-floor fan model,(14) supercritical and subcritical fans,and(15) the three types of fan reservoirs.Each model is unique,and the long-standing belief that submarine fans are composed of turbidites,in particular,of gravelly and sandy high-density turbidites,is a myth.This is because there are no empirical data to validate the existence of gravelly and sandy high-density turbidity currents in the modern marine environments.Also,there are no experimental documentation of true turbidity currents that can transport gravels and coarse sands in turbulent suspension.Mass-transport processes,which include slides,slumps,and debris flows(but not turbidity currenrs),are the most viable mechanisms for transporting gravels and sands into the deep sea.The prevailing notion that submarine fans develop during periods of sea-level lowstands is also a myth.The geologic reality is that frequent short-term events that last for only a few minutes to several hours or days(e.g.,earthquakes,meteorite impacts,tsunamis,tropical cyclones,etc.) are more important in controlling deposition of deep-water sands than sporadic longterm events that last for thousands to millions of years(e.g.,lowstand systems tract).Submarine fans are still in a stage of muddled turbidite paradigm because the concept of high-density turbidity currents is incommensurable.

知网文化
【相似文献】
中国期刊全文数据库 前20条
1 ;Late Miocene Red River submarine fan,northwestern South China Sea[J];Chinese Science Bulletin;2011年14期
2 张亮;栾锡武;;Stability of submarine slopes in the northern South China Sea: a numerical approach[J];Chinese Journal of Oceanology and Limnology;2013年01期
3 QIU Wenxian;JIN Xianglong;SCHOFIELD Clive;LI Mingbi;;Preliminary considerations on the potential influence of submarine fans on marine delimitation[J];Acta Oceanologica Sinica;2013年12期
4 ;Mechanism of local scour around submarine pipelines based on numerical simulation of turbulence model[J];Acta Oceanologica Sinica;2006年02期
5 JIN Xianglong;;Recent progress in submarine geosciences in China[J];Acta Oceanologica Sinica;2013年12期
6 ;Morphology and architecture of the typical erosion-genesis submarine canyons on the East China Sea slope[J];Acta Oceanologica Sinica;2009年06期
7 彭阜南,眭良仁,梁居廷,沈华悌;DATA ON LOWEST SEA LEVEL OF THE EAST CHINA SEA IN LATE PLEISTOCENE[J];Science in China,Ser.B;1984年08期
8 钱进;吴时国;崔若飞;;Accuracy of the staggered-grid finite-difference method of the acoustic wave equation for marine seismic reflection modeling[J];Chinese Journal of Oceanology and Limnology;2013年01期
9 李昕,刘亚坤,周晶,马恒春,朱彤;Experimental Study on Free Spanning Submarine Pipeline Under Dynamic Excitation[J];China Ocean Engineering;2002年04期
10 ;Experimental Study on the Distribution of Velocity and Pressure near a Submarine Pipeline[J];Journal of Ocean University of China;2009年04期
11 李明高;李昕;董汝博;周晶;关炯;;Study on Model Tests and Hydrodynamic Force Models for Free Spanning Submarine Pipelines Subjected to Earthquakes[J];China Ocean Engineering;2010年02期
12 ;Relationship between polymetallic nodules and submarine hydrothermalism in the Central Pacific Ocean[J];Chinese Science Bulletin;1997年23期
13 ;Stability Design System of Submarine Pipelines[J];China Ocean Engineering;1995年01期
14 ;Effects of Internal Flow on Vortex-Induced Vibration and Fatigue Life of Submarine Pipelines[J];China Ocean Engineering;1996年03期
15 ;Research Priorities and Drilling Goals of Ocean Drilling Program[J];Abstracts of Chinese Geological Literature;1999年03期
16 张楠;张胜利;;Numerical simulation of hull/propeller interaction of submarine in submergence and near surface conditions[J];Journal of Hydrodynamics;2014年01期
17 ;A study of the microbial mineralization in submarine black smoker chimneys from the Okinawa Trough[J];Acta Oceanologica Sinica;2009年02期
18 陈严飞;李昕;周晶;关炯;;Study on Interaction Relationship for Submarine Pipeline with Axial Corrosion Defects[J];China Ocean Engineering;2008年03期
19 赵冬岩;周雷;何宁;王凤云;;Hydrodynamic Forces and Instability of Submarine Pipelines Under Waves and Currents:A Review[J];China Ocean Engineering;2010年02期
20 ;Study on First-Yield Collapse of Submarine Pipelines[J];China Ocean Engineering;1997年04期
中国重要会议论文全文数据库 前6条
1 Robert P.Lowell;;The dynamics of submarine geothermal heat pipes[A];中国科学院地质与地球物理研究所二○○三学术论文汇编·第二卷(青藏高原)[C];2003年
2 ;Study on fatigue test of submarine oil pipeline[A];第十四届中国海洋(岸)工程学术讨论会论文集(上册)[C];2009年
3 Bing SHAO;Yifei YAN;Tingting JANG;Xiangzhen YAN;;Dynamic Response Analysis of Suspended Submarine Pipeline Based on Soil Triaxial Test[A];2012年海峡两岸破坏科学/材料试验学术会议论文摘要集[C];2012年
4 ;Measurement Report of Strain and Stress for Hydrostatic Test of Tour Submarine[A];现代船舶机电维修技术(2005)[C];2005年
5 ;Research on Evaluation Method of Dynamic Uncertainty Based on Confident Interval[A];Proceedings of 14th Chinese Conference on System Simulation Technology & Application(CCSSTA’2012)[C];2012年
6 ;Fuzzy Controller and Rules Optimization Used For the Surface Maneuver Control of Submarine in Calm Sea Area[A];2009中国控制与决策会议论文集(3)[C];2009年
中国博士学位论文全文数据库 前2条
1 赵铁虎;[D];中国海洋大学;2011年
2 Salman Sadiq;[D];哈尔滨工程大学;2009年
中国知网广告投放
 快捷付款方式  订购知网充值卡  订购热线  帮助中心
  • 400-819-9993
  • 010-62982499
  • 010-62783978