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Distribution of heavy metals and potential ecological risk in surface sediment of offshore marine areas in Lianyungang
连云港近岸海域表层沉积物中重金属的分布特征及潜在生态危害

ZHANG Qing,ZHOU De-shan,SONG Xiang-ming,ZHAO Chong-hou,CHEN Ke-hong,
张 晴
,周德山,宋向明,赵冲厚,陈克红

土壤 , 2012,
Abstract: This paper analyzed the correlation of heavy metals in sediment of Lianyungang sea area by the methods of variation coefficients,concentration coefficients and potential ecological risk indexes.The results showed that significant differences existed in spatial distribution and accumulation of heavy metals,the extent of spatial fluctuation was in order of Cu = Cd>Hg>Cr>As>Zn>Pb,the extent of the accumulation was in order of Zn>Cr>Cd>Cu>As>Pb>Hg;The potential ecological risk of heavy metals to ocean ecology system was very slight except for Cd which was at middle pollution level found at 5 stations,the potential ecological risk was in order of Cd>Hg>As>Cu>Pb>Cr>Zn,the accumulation of heavy metals was serious and the potential ecological risk was high in port area;Organic carbon(DOC) and acid volatile sulfide(AVS) influenced the transport and transform process of heavy metals and then influenced the potential ecological risk level and biotoxicity.
莺歌海盆地泥-流体底辟构造成因机制与天然气运聚  [PDF]
张敏强,钟志洪,夏斌,李绪宣,孙珍,王良书,王振峰
大地构造与成矿学 , 2004,
Abstract: 莺歌海盆地的泥-流体底辟构造发育演化是区域构造应力场变化和超压体系形成演化的结果。与盆地构造类型密切相关的不均衡压实和热作用引起盆地超压体系的发育,而区域构造应力场变化则导致盆地中中新世以泥底辟作用为主,晚中新世―第四纪以流体底辟作用为主,其中,早期泥底辟阶段形成的构造形态对晚期流体底辟作用有显著的控制作用。在莺歌海组浅层底辟圈闭中,圈闭形成期与中新统气源岩生烃过程的匹配是造成含不同天然气组分的流体发生幕式充注的主要原因。
A MOVEMENT DISCRIMINATION OF SURFACE SEDIMENT NEAR BEACH OF THE LIANYUNGANG AREA
连云港附近岸滩表层沉积物的动态判别

唐寅德
海洋科学 , 1987,
Abstract: This paper discusses mean grain size character of surface sediments near beach of the Lianyungang. Better relationships between mean grain size and maximum bottom shearing force of wave and current is found using a multivariate statistical analysis. As a result, sediment movement can be discriminated. Which is of practical significance for predicting beach erosion and deposit variations.
泥底辟输导流体机制及其与天然气水合物成藏的关系
Diapir Conduit Fluid Mechanism and Its Relationship with Gas Hydrate Accumulations
 [PDF]

刘杰, ,孙美静,杨睿, , 苏明, , 严恒
LIU Jie
, SUN Meijing, YANG Rui, SU Ming, YAN Heng

- , 2016,
Abstract: 摘要: 摘要:详细阐述不同成因的泥底辟流体输导模式,探讨了泥底辟输导体系的演化与天然气水合物成藏之间的关系,并分析神狐海域泥底辟输导体系对天然气水合物成藏的影响。底辟核外部伴生断裂、底辟核内部流体压裂裂缝和边缘裂缝带均可作为输导流体的通道。根据运移通道和动力等差异性,提出泥底辟输导流体的2种端元模式:超压-流体压裂输导型和边缘构造裂缝输导型。在此基础上,讨论了泥底辟(泥火山)的不同演化阶段对水合物的形成、富集和分解的影响。早期阶段,泥底辟形成的运移通道可能未延伸到水合物稳定带,导致气源供给不够充分;中期阶段,水合物成藏条件匹配良好,利于天然气水合物生成;晚期阶段,泥火山喷发引起水合物稳定带的热异常,可能导致水合物分解,直至泥火山活动平静期,水合物再次成藏。神狐海域内泥底辟分为花冠状和穹顶状两类,花冠状泥底辟以超压-流体压裂输导型为主;穹顶状泥底辟以底辟边缘裂缝输导型为主。泥底辟输导体系的差异性可能是神狐海域天然气水合物非均质分布的影响因素之一。 关键词:泥底辟;输导体系;天然气水合物;成藏机制;神狐海域
Abstract: Abstract:This paper describes fluid migration patterns about mud diapir with different origins, then discusses the relationship between natural gas hydrate accumulation and the evolution of mud diapir migration system, and analyzes the effect of mud diapir migration system on gas hydrate accumulation in Shenhu area.The fluid migration systems for diapir consist of external associated fault and fracture, the internal overpressured fluid fracture and structural fracture in the margin of diapir. Depending on migration conduit and migration dynamics, two kinds of fluid migration patterns have been proposed: overpressureconducting fracturing fluid migration type and marginal fracture migration type. In addition, the mud diapir (mud volcano) has different effects on formation and stability of the hydrate in the different evolution stages. The migration channel may not extend to the hydrate stability zone in the early stages of mud diapiric formation, which results in insufficient supply of CH4. It is conducive to the formation of natural gas hydrates in the middle stage, because of good matching in hydrate metallogenic conditions; the abnormal heat in the hydrate stability zone, caused by high temperature gasbearing fluid from mud volcano eruption, may lead to the decomposition of hydrates in the late stage. Until the quiet period of mud volcano activity, hydrates can be reserved again. According to morphological characteristics of diapirs in Shenhu Area, mud diapirs could be classified into two types: corolliform and domeform diapirs. The fluid migration pattern of corolliform diapirs belongs to overpressureconducting fracturing fluid migration type; the fluid migration pattern of domeform diapirs belongs to marginal fracture migration type. Different diapiric migration patterns may be one of main factors of nonhomogeneous distribution of gas hydrate in Shenhu area
深海表层海泥模拟及地面力学特性研究  [PDF]
李力,李庶林
工程力学 , 2010,
Abstract: 深海表层海泥车辆地面力学特性是开发大洋矿产资源-多金属结核采矿车的理论基础。该文深入研究深海表层海泥样品和陆地二种膨润土的物理性质,确定深海表层模拟海泥的原料,分析深海表层海泥和模拟海泥的物理力学参数,配制出具有极高含水量、极小内摩擦角、高液限、高塑性、大孔隙比、低强度和低重度等深海表层海泥特性的模拟海泥,根据车辆地面力学理论,开展多种平板在垂直方向上的海泥载荷-沉陷实验和不同节距、不同齿高、不同齿形和不同齿宽的履带齿板在水平力作用下的海泥剪切应力-位移实验,深入分析实验数据,国内首次提出基于Bekker理论和Reece理论的深海表层海泥的二种载荷与沉陷特性,及深海表层海泥的剪切应力和位移特性,深入分析我国多金属结核采矿车在深海表层海泥上行走时履带牵引力与打滑率特性,为进一步开发海底采矿车提供了设计依据和理论。
冲绳海槽宫古段西部槽底海底气泉的发现
栾锡武,秦蕴珊
科学通报 , 2005,
Abstract: 中国科学院海洋研究所“科学一号”调查船于2000年在冲绳海槽宫古段进行了地球物理调查.在对调查资料进行了处理以后,在西部槽底近陆坡底部的位置上发现了海底气泉的存在.给出了海底气泉存在的证据,并讨论了海底气泉的成因及水合物存在的可能.指出,模拟测深记录上以及单道地震剖面上出现的气柱现象可能是由地层中的气体从海底逸出引起的;海底气泉控制了直径约2.2km左右的范围,为一个巨型的低温气泉.H14地震剖面上发育典型的帘式反射,标志着异常反射区地层中游离气的存在.H12地震剖面在相近的位置上出现的浊反射进一步印证了地层中游离气的存在.根据地震剖面上异常反射的形式,推测地层中游离气含量比较高,至少超过地层体积的1%.在构造位置上,海底气泉处在海槽西部近陆坡底部一个次一级的盆地当中.该盆地的西侧为东海陆架断隆,而东侧以及南北两侧都被基底隆起所控制.其中南部的基底隆起至今还在明显抬升中.盆地中发育了很厚的沉积地层,地层厚度超过3.5km.由于地层自身的重力负荷,以及周边基底隆起引起的构造挤压,盆地中层D以下发育泥底辟构造.泥底辟构造成为地层中超高压气体及低密度流体向上迁移的有效通道,也是海底气泉发育的直接原因.根据温度和压力条件估算以及地震反射特征,认为气泉处帘式反射顶部以
冲绳海槽宫古段西部槽底海底气泉的发现  [PDF]
栾锡武,秦蕴珊
科学通报 , 2005,
Abstract: 中国科学院海洋研究所“科学一号”调查船于2000年在冲绳海槽宫古段进行了地球物理调查.在对调查资料进行了处理以后,在西部槽底近陆坡底部的位置上发现了海底气泉的存在.给出了海底气泉存在的证据,并讨论了海底气泉的成因及水合物存在的可能.指出,模拟测深记录上以及单道地震剖面上出现的气柱现象可能是由地层中的气体从海底逸出引起的;海底气泉控制了直径约2.2km左右的范围,为一个巨型的低温气泉.H14地震剖面上发育典型的帘式反射,标志着异常反射区地层中游离气的存在.H12地震剖面在相近的位置上出现的浊反射进一步印证了地层中游离气的存在.根据地震剖面上异常反射的形式,推测地层中游离气含量比较高,至少超过地层体积的1%.在构造位置上,海底气泉处在海槽西部近陆坡底部一个次一级的盆地当中.该盆地的西侧为东海陆架断隆,而东侧以及南北两侧都被基底隆起所控制.其中南部的基底隆起至今还在明显抬升中.盆地中发育了很厚的沉积地层,地层厚度超过3.5km.由于地层自身的重力负荷,以及周边基底隆起引起的构造挤压,盆地中层D以下发育泥底辟构造.泥底辟构造成为地层中超高压气体及低密度流体向上迁移的有效通道,也是海底气泉发育的直接原因.根据温度和压力条件估算以及地震反射特征,认为气泉处帘式反射顶部以上地层可能含有水合物.
三槽氧化沟内底推位置与积泥厚度的分析研究  [PDF]
孔凡博,张耀宗
环境工程 , 2013, DOI: 10.13205/j.hjgc.201304002
Abstract: 氧化沟工艺由于进水中含有大量的无机颗粒,无机颗粒的沉淀导致沟内积泥较厚。为了不影响正常生产,依据经验数据,依次对1号、2号氧化沟安装底推。对沟内积泥情况及影响因素进行分析比较,得出氧化沟的积泥主要由进水中密度较大的无机颗粒造成,且积泥规律与底推安装位置和运行情况相关。
白泥海水脱硫示范工程的中试研究  [PDF]
楚宪峰,田建茹,孙炳宏,陈国丽,丁甫军
环境工程 , 2009, DOI: 10.13205/j.hjgc.200905023
Abstract: 对黄岛发电厂3#机组白泥海水脱硫示范工程进行了中试研究。试验结果表明以白泥做吸收剂,脱硫效率可达到90%以上,并能产生较好的经济效益,脱硫过程中可以直接消耗白泥,从而达到以废治废的目的。
新元古代沂沭海峡地震引发的软沉积物变形及其微量元素信息*
Earthquake-induced soft sediment deformations and their trace-element information in the Neoproterozoic Yishu Strait
 [PDF]

张邦花, 田洪水, A.J.vanLoon
- , 2017, DOI: 10.7605/gdlxb.2017.01.008
Abstract: 新元古代沂沭海峡位于郯庐断裂带昌邑—大店断层西侧宽60~90,km、长300,km的区域内,其分布范围基本与郯庐断裂带中段一致。新元古代,该海峡盆地先后沉积了青白口系、南华系及震旦系的滨—浅海相陆源碎屑、泥质及碳酸盐沉积物,其岩石地层称之为土门群。本次研究从该海峡盆地土门群佟家庄组(由石英砂岩、泥灰岩和页岩组成,属南华系)、浮来山组(由细—粉砂岩夹页岩组成,属震旦系)及石旺庄组(主要由碳酸盐岩组成,下部夹页岩,属震旦系)中鉴别出了一系列地震触动软沉积物形成的变形构造,包括液化砂墙和砂脉、负载构造、火焰构造、球枕构造、软布丁构造、底辟构造、滑塌褶曲和同沉积断层等。它们是地震事件的记录——震积岩。新元古代中晚期(约800600,Ma)沂沭海峡盆地拉张裂陷是它们形成的动力机制。根据石旺庄组中的微亮晶方解石脉与地震成因的变形构造(如负载、火焰、软布丁及同沉积断层等)共(伴)生的事实,并结合模拟地震试验结果分析,认为微亮晶方解石脉很可能是地震引发的饱和灰泥(方解石微粒)液化脉。微量化学元素分析结果表明,这些震积岩中的w(La)/w(Sc)和 w(La)/w(Th)值高于上地壳平均值和正常沉积层,而w(Th)/w(Sc)值则较低,深源微量元素NiCr的含量也高于上地壳平均值及正常沉积层。这些微量元素特征是当时的盆地基底不稳定、快速沉积且伴有深部物质元素混入的反映,强地震很可能是快速沉积和促进深源物质混入的主要动力。土门群中发育的一系列地震引起的软沉积物变形(震积岩),再次证明了古郯庐断裂带的存在,由它们记录的地震事件也是晋宁运动乃至Rodinia超大陆的裂解的响应。
The Yishu Strait is a region of 60~90,km wide and 300,km long that is located at the western side of the Changyi-Dadian Fault of the Tanlu Fault Zone,which extent is essentially as same as that of the middle segment of the Tanlu Fault Zone. During the Neoproterozoic,littoral neritic sediments composed of terrigenous clastics,clays and carbonates were deposited in the basin. These sediments belong stratigraphically to the Tumen Group from the Qingbaikou to Sinian. A variety of soft-sediment deformation structures(SSDS)were identified from the Tumen Group,including dikes or veins of liquefied sand,load cast structures,flame structures,ball-and-pillow structures,soft boudinages,diapirs,slumps and synsedimentary faults. They occur in the Nanhua Tongjiazhuang Formation(which consists of quartz sandstones,marls and shales),the Sinian Fulaishan Formation(which consists of fine sandstones and silty sandstones interbedded with shales)and the Shiwangzhuang Formation(with mainly carbonate rocks,interbedded in the lower part with sandy shales)of the Tumen Group. They are records of seismic events,i.e. seismites,which were related to tectonic tension and seismic activity in the Paleo-Tanlu Fault Zone. Strong earthquakes caused by the rifting of the strait basin was the dynamic trigger mechanism responsible for the formation of the SSDS during the mid-late stage of the Neoproterozoic(approx. 800-600,Ma). Because of the joint occurrence of microspar calcite veins(molar
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