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1.
In the past, domestic and abroad scientific workers have done a great number of researches of experiment forthe relationship between electrical resistivity change and stress on rock (Geoelectric Testing Group, Department ofGeophysics, Peking University and Research Division, Seismological Brigade of Lanzhou, 1978; Zhang, 1981;Chen, et al, 1983, Zhao, et al, 1983, Zhang, Lu, 1983; Zhang, et al, 1985; Brace, Orange, 1968, Kurite, 1986;Teisseyre, 1989), such as simulating the dynamic cour… 相似文献
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The bottom of the Lower Cambrian series is an important bed typical of boundary event. The bed had been enriched with many useful elements such as Ni, Mo, Cu, Pb, Zn, Au, Ag, Ru, Rh, Pd, Os, Ir and Pt, many rare and dispersed elements such as Cd, Se, Tl, … 相似文献
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《湖泊科学》2021,33(1)
专稿
论水生野生动物的主动保护与被动保护（1-10）
杨海乐,危起伟
淡水贝类观察——生物阐释水污染和毒理的创新手段（11-27）
陈修报,杨健,刘洪波,姜涛
综述
天然胶体的水环境行为（28-48）
王沛芳,包天力,胡斌,钱进
湖泊富营养化响应与流域优化调控决策的模型研究进展（49-63）
刘永,蒋青松,梁中耀,吴桢,刘晓钰,冯秋园,邹锐,郭怀成
研究论文
——富营养化与水华防控
19882018年滇池氮磷比的时空演变特征与原因解析（64-73）
高伟,程国微,严长安,陈岩
基于水华蓝藻固有光学特性的主要类群定量识别方法（74-85）
褚乔,张壹萱,张玉超,马荣华,胡旻琪
西藏巴松错浮游植物功能群垂直分布特征及其与环境因子的关系（86-101）
安瑞志,潘成梅,塔巴拉珍,杨欣兰,巴桑
鄱阳湖丰水期着生藻类群落空间分布特征（102-110）
钱奎梅,刘霞,陈宇炜
夏季东太湖光合有效辐射衰减特征及其对沉水植物恢复的指示（111-122）
徐德瑞,周杰,吴时强,戴江玉,吴修锋
喀斯特湿地水葫芦（Eichhornia crassipes）生长及表型可塑性特征对不同富营养化水体的响应（123-137）
滕秋梅,孙英杰,沈育伊,张德楠,徐广平,周龙武,张中峰,黄科朝,何文,何成新
——水环境保护与修复
城市场次降雨径流污染负荷快速估算方法（138-147）
何胜男,陈文学,廖定佳,周瑾,穆祥鹏
Fenton体系处理黑臭河道沉积物的效果初探（148-157）
罗春燕,巩小丽,张巧颖,陈煜,杜瑛珣
鄱阳湖网箱养殖区沉积物有机质来源分析（158-167）
王毛兰,熊鑫,何昶,赵茜宇,刘景景
不同丰枯情景下长江三角洲非通江湖泊（滆湖、淀山湖和阳澄湖）有色可溶性有机物组成特征（168-180）
石玉,李元鹏,张柳青,郭燕妮,周蕾,周永强,张运林,黄昌春
——水生态与生物多样性保育
水位对洞庭湖湿地4种典型沉水植物的影响（181-191）
刘向东,侯志勇,谢永宏,于晓英,李旭,曾静
水位波动的幅度与频率对刺苦草(Vallisneria spinulosa)生物量和形态特征的影响（192-203）
丁明明,黎磊,金斌松,陈家宽
河流大型底栖动物对环境压力的响应:以太湖、巢湖流域为例（204-217）
张又,蔡永久,张颖,高俊峰,李宽意
19882016年洞庭湖大型底栖动物群落变化及驱动因素分析（218-231）
王丑明,张屹,田琪,黄代中,高吉权,刘云志,龚正,陶世新,孟星亮
西江广东鲂（Megalobrama terminalis）繁殖生物学及繁殖策略（232-241）
刘亚秋,李新辉,李跃飞,陈蔚涛,李捷,朱书礼
——水文与水资源保护
基于系统动力学的巢湖流域水资源承载力动态预测与调控（242-254）
张礼兵,胡亚南,金菊良,吴成国,周玉良,崔毅
太湖流域梅雨的划分及其典型年异常成因分析（255-265）
吴娟,梁萍,林荷娟,吴志勇,钱琦雯
近100年来长江与洞庭湖汇流河段水文特征演变（266-276）
肖潇,毛北平,吴时强
长江中游沙质河段床沙级配调整过程计算（277-288）
李林林,夏军强,周美蓉,邓珊珊
洪泽湖水沙变化趋势和冲淤时空分布及驱动因素（289-297）
贲鹏,虞邦义,张辉,胡勇
三峡水库中段库底水体CH4浓度变化及其主要影响因素（299-308）
秦宇,苏友恒,李哲,刘正勉,张渝阳
——流域与可持续发展
近30年来鄱阳湖生态系统服务变化（309-318）
陈旻坤,徐昔保
研究简报
淡水磷酸盐氧同位素前处理方法的优化（319-328）
薛珂,张润宇,安宁,陈敬安,邹银洪,刘勇,张志 相似文献
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LINTRODUCTIONAstudyonevolutionandpredictionofthefluvialgeomorphicsystemhasdevelopedinthe1970's(Scheideggef,1975),andisstillapplied.Fromthemiddleofthe1980'son,researchofcatastrophicprocessesinthefluvialgeomorphicSystem(catatrophism,hazards)hasbeenfocusedon(SchummandChorley,1983,ShenandSchumm,1981,Chorley,SchununandSugden,1985).WhenafluvialgeomorphicSystemislocatedatthelinearregionofanollequilibriumstatebutveryclosetoequilibriumone,theboundaryconditionprotectstheSystemfromequilibrium,an… 相似文献
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A numerical study of 1-D nonlinear P-wave propagation in solid 总被引：3，自引：0，他引：3
IntroductionBecauseoftheextensivedistributionofruptures,micro-cracksandcrystalfracturesintheearth,therelationshipsbetweenthestressandstrainarenolongerlinear,infact,theyarenonlinear.Inordertoinvestigateandusethenonlinearcharacteristicsofsolidmediumintheearth,weshouldconsidertheinfluenceofnonlinearresponseduringthecourseofseismicmodelingandinversion.Thisisoneoftheimportantstudyfieldsthathavebeenpaidgreatattentionsinthere-centyearsintheworld(Minster,etal,1991;ZHANG,TENG,1993).Thenonlinearchar… 相似文献
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The crystal structure of (Fe_4Cr_4Ni)_9C_4 总被引：1，自引：0，他引：1
SHI Nicheng MA Zhesheng XIONG Ming DAI Mingquan BAI Wenji FANG Qingsong YAN Binggang & YANG Jingsui . X-ray Diffraction Laboratory China University of Geosciences Beijing China . Institute of Geology Chinese Academy of Geological Sciences Beijing China 《中国科学D辑(英文版)》2005,48(3)
The Luobusha podiform chromite deposit occursin the Luobusha ophiolite exposed at the In-dus-Yarlung Zangbo suture[1]. The wall rocks of chro-mitites are harzburgites. Many mantle minerals werefound in chromitites and harzburgites. Among of them,there are 120 grains of diamond[2], many elementalmetals (mainly Au, Cu, Fe, Ni, Cr, Al, W, Zn, Pb, Sn,Os, Ir, Ru, C, etc.) and their intermetallic compounds.Besides diamond and graphite, the element C isalso combined with Fe, Cr, Ni, Ti and … 相似文献
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Distribution of empirical recurrence intervals for segment-rupturing earthquakes on active faults of the Chinese mainland 总被引：2，自引：0，他引：2
闻学泽 《地震学报(英文版)》1999,12(6):667-675
IntroductionInassessingtheprobabilitiesoftime-dependentandlong-termseismichazardsforsegmentsofactivefaults,itisnecessarytohavetheprobabilitydensity,f(O,fordescribingtherecurrenceintervaldistributionforsegment-rupturingearthquakes.Fromf(nandthefollowingequation,theconditionalprobability,pc,whichincreaseswiththetime,Te,elapsedsincethelatestearthquake,isabletobecalculated(Nishenko,Buland,1987,WorkingGrouponCaliforniaEarthquakeProbabilities,1995;Wen,1995,1998)fwhereATisthetimeintervalforthefor… 相似文献
11.
Chai Chizhang Zhang Weiqi and Jiao DechengSeismological Bureau of Ningxia Hui Autonomous Region Yinchuan China 《中国地震研究》1998,(4)
Through detailed field mapping, the tectonic deformation in the front area of the Tianjingshan fault zone is discussed in this paper. The result shows that there are two Quaternary thrust (oblique) fault-fold belts, namely: the Miaoshan and Hongjianshan fault-fold belts, in the front area of the south wall's strike-slip movement of the Tianjingshan fault zone. The Hejiakouzi Quaternary anticline, which is a part of the Miaoshan fault-fold belt, is mainly discussed. It is pointed out that the fold began to grow in the middle part near Hejiakouzi in the mid-late stage of middle Pleistocene epoch and then gradually developed towards the ends in late Quaternary. Based on the Cenozoic structural features, the genesis of the Miaoshan and Hongjianshan fault-fold belts and the kinematic relation they bear with the Tianjingshan fault zone are analyzed. 相似文献
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Tianshan is one of the longest and most active intracontinental orogenic belts in the world. Due to the collision between Indian and Eurasian plates since Cenozoic, the Tianshan has been suffering from intense compression, shortening and uplifting. With the continuous extension of deformation to the foreland direction, a series of active reverse fault fold belts have been formed. The Xihu anticline is the fourth row of active fold reverse fault zone on the leading edge of the north Tianshan foreland basin. For the north Tianshan Mountains, predecessors have carried out a lot of research on the activity of the second and third rows of the active fold-reverse faults, and achieved fruitful results. But there is no systematic study on the Quaternary activities of the Xihu anticline zone. How is the structural belt distributed in space?What are the geometric and kinematic characteristics?What are the fold types and growth mechanism?How does the deformation amount and characteristics of anticline change?In view of these problems, we chose Xihu anticline as the research object. Through the analysis of surface geology, topography and geomorphology and the interpretation of seismic reflection profile across the anticline, we studied the geometry, kinematic characteristics, fold type and growth mechanism of the structural belt, and calculated the shortening, uplift and interlayer strain of the anticline by area depth strain analysis.
In this paper, by interpreting the five seismic reflection profiles across the anticline belt, and combining the characteristics of surface geology and geomorphology, we studied the types, growth mechanism, geometry and kinematics characteristics, and deformation amount of the fold. The deformation length of Xihu anticline is more than 47km from west to east, in which the hidden length is more than 14km. The maximum deformation width of the exposed area is 8.5km. The Xihu anticline is characterized by small surface deformation, simple structural style and symmetrical occurrence. The interpretation of seismic reflection profile shows that the deep structural style of the anticline is relatively complex. In addition to the continuous development of a series of secondary faults in the interior of Xihu anticline, an anticline with small deformation amplitude(Xihubei anticline)is continuously developed in the north of Xihu anticline. The terrain high point of Xihu anticline is located about 12km west of Kuitun River. The deformation amplitude decreases rapidly to the east and decreases slowly to the west, which is consistent with the interpretation results of seismic reflection profile and the calculation results of shortening. The Xihu anticline is a detachment fold with the growth type of limb rotation. The deformation of Xihu anticline is calculated by area depth strain analysis method. The shortening of five seismic reflection sections A, B, C, D and E is(650±70) m, (1 070±70) m, (780±50) m, (200±40) m and(130±30) m, respectively. The shortening amount is the largest near the seismic reflection profile B of the anticline, and decreases gradually along the strike to the east and west ends of the anticline, with a more rapidly decrease to the east, which indicates that the topographic high point is also a structural high point. The excess area caused by the inflow of external material or outflow of internal matter is between -0.34km2 to 0.56km2. The average shortening of the Xihubei anticline is between(60±10) m and(130±40) m, and the excess area caused by the inflow of external material is between 0.50km2 and 0.74km2. The initial locations of the growth strata at the east part is about 1.9~2.0km underground, and the initial location of the growth strata at the west part is about 3.7km underground. We can see the strata overlying the Xihu anticline at 3.3km under ground, the strata above are basically not deformed, indicating that this section of the anticline is no longer active. 相似文献
In this paper, by interpreting the five seismic reflection profiles across the anticline belt, and combining the characteristics of surface geology and geomorphology, we studied the types, growth mechanism, geometry and kinematics characteristics, and deformation amount of the fold. The deformation length of Xihu anticline is more than 47km from west to east, in which the hidden length is more than 14km. The maximum deformation width of the exposed area is 8.5km. The Xihu anticline is characterized by small surface deformation, simple structural style and symmetrical occurrence. The interpretation of seismic reflection profile shows that the deep structural style of the anticline is relatively complex. In addition to the continuous development of a series of secondary faults in the interior of Xihu anticline, an anticline with small deformation amplitude(Xihubei anticline)is continuously developed in the north of Xihu anticline. The terrain high point of Xihu anticline is located about 12km west of Kuitun River. The deformation amplitude decreases rapidly to the east and decreases slowly to the west, which is consistent with the interpretation results of seismic reflection profile and the calculation results of shortening. The Xihu anticline is a detachment fold with the growth type of limb rotation. The deformation of Xihu anticline is calculated by area depth strain analysis method. The shortening of five seismic reflection sections A, B, C, D and E is(650±70) m, (1 070±70) m, (780±50) m, (200±40) m and(130±30) m, respectively. The shortening amount is the largest near the seismic reflection profile B of the anticline, and decreases gradually along the strike to the east and west ends of the anticline, with a more rapidly decrease to the east, which indicates that the topographic high point is also a structural high point. The excess area caused by the inflow of external material or outflow of internal matter is between -0.34km2 to 0.56km2. The average shortening of the Xihubei anticline is between(60±10) m and(130±40) m, and the excess area caused by the inflow of external material is between 0.50km2 and 0.74km2. The initial locations of the growth strata at the east part is about 1.9~2.0km underground, and the initial location of the growth strata at the west part is about 3.7km underground. We can see the strata overlying the Xihu anticline at 3.3km under ground, the strata above are basically not deformed, indicating that this section of the anticline is no longer active. 相似文献
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熊坡背斜构造变形与蒲江-新津断裂活动特征 总被引：3，自引：0，他引：3
熊坡背斜位于龙门山构造带东南端的成都盆地内,是龙门山逆冲推覆构造向前推挤进入盆地内部的一个主要变形区域,与其配套发育的断裂为蒲江-新津断裂,断裂与背斜褶皱之间在构造变形模式上表现出明显的一致性。在褶皱和断裂的构造变形和活动特征上,熊坡背斜南段表现为一种不对称的褶皱,向NE方向发展表现为较为宽缓的对称褶皱形态,卷入的地层主要是中生代及其以前的地层,对蒲江-新津断裂的地貌调查结果表明,断裂没有对该区域内广泛发育的冲沟Ⅰ级阶地产生影响,而对山前发育的相当于南河(岷江Ⅰ级支流)Ⅳ级阶地的洪积台地有明显的控制作用,说明断裂活动时间应该为第四纪早期,到第四纪晚期活动减弱或是趋于静止 相似文献
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托斯台逆断裂-褶皱带晚第四纪活动特征 总被引：1，自引：0，他引：1
托斯台逆断裂-褶皱带位于乌鲁木齐山前坳陷的西部,为近东西向展布的新生代逆断裂．背斜带。它主要由北单斜带、中部背斜带和南单斜带3个构造带组成,在各构造带均发育逆活动断裂。地震勘探资料显示,南单斜带与中部背斜带为滑脱体,逆断裂在深部沿滑脱面与清水河子深断裂相汇。研究表明,北单斜带与中部背斜带逆断裂断错了晚更新世堆积物,在晚更新世有显著的活动;南单斜带逆断裂断错了全新世堆积物,在全新世时期有最新活动。中部背斜带逆断裂晚更新世以来水平缩短速率为0．6～1．3mm／a;南单斜逆断裂全新世水平缩短速率为0．2～0．6mm／a。 相似文献
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龙泉山构造带是四川盆地内川西强烈断陷区和川中稳定隆起区之间的一条区域性断裂.2008年汶川地震后该断裂带未来的强震潜势备受关注.本文对该断裂带的展布、晚第四纪活动性、深部构造形成机制以及断裂带未来的地震危险潜势进行了讨论.断裂带北段位于德阳东侧龙泉山脉西缘;龙泉山脉中段的山体两翼存在断裂;断裂带的南段以向西倾斜的断裂为主.这些断裂在晚更新世以来曾有活动,前人阶地调查显现该断裂带全新世存在活动.考虑到该断裂带未来的地震潜势评估,值得对该断裂带的活动性及断裂带深部构造和运动方式开展进一步的调查. 相似文献
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发育在帕米尔弧形推覆构造带最前缘的木什活动背斜是一南缓北陡的第四纪滑脱褶皱,背斜的最小地壳缩短量为0.7km,构造隆升幅度可达1.5km.木什背斜北翼逆断层由一系列坡向北的反向断层陡坎组成,不同断坎间垂直位移分布呈现此消彼长的特征,不论是整个北翼逆断层西段还是单条断坎,其垂直位移均呈东高西低的不对称分布,位移梯度东高西... 相似文献
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库车坳陷是南天山中段新构造运动异常强烈的地区,发育4排近EW向展布的逆断裂-背斜带。通过野外实地考察及前人资料分析,认为该区晚第四纪以来的构造变形主要集中于喀桑托开逆断裂-背斜带、秋里塔格逆断裂-背斜带和最南缘的亚肯逆断裂-背斜带之上,而且不同构造带之间的变形方式存在较大差异。作者利用全站仪(total station)对上述构造带的变形地貌进行了精确测量,并结合年代学分析,得到喀桑托开逆断裂-背斜的地壳缩短速率为1·0~2·0mm/a,秋里塔格逆断裂-背斜带的地壳缩短速率为2·5~3·0mm/a,亚肯盲逆断裂-背斜的地壳缩短速率为1·5~2·0mm/a。晚第四纪以来,库车坳陷SN向总的地壳缩短速率不<5·0~7·0mm/a 相似文献
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通过对天山北麓 190 6年玛纳斯 7 7级地震区的浅层地震探测资料、石油地震反射剖面、二维电性结构剖面、深地震反射剖面的研究 ,发现玛纳斯地震区多层次活动构造系统的根带 ,它通过脆 -韧转换带与天山活动构造块体内上地壳中的低速、高导层连为一体。低速、高导层可能是天山地壳内正在活动的韧性剪切带 ,而齐古逆断裂 -褶皱带下的脆 -韧转换带是连接深部活动韧性剪切带与地壳浅部脆性破裂的枢纽 ,也是现今孕育和发生大地震的重要构造部位。 190 6年玛纳斯地震发生在脆韧转换带的底部 ,地震区的活动逆断裂和褶皱只是部分记录了深部韧性剪切带活动的信息 相似文献
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利用浅地层剖面仪对郯庐断裂带莱州湾段进行了活断层探测,发现郯庐断裂带主干断裂在第四纪晚期以来具有明显的活动,继承了晚第三纪以来的主要构造活动特点,仍是这一区域的主导性构造. 西支KL3断裂由多条高角度正断裂组成,最新活动时代为晚更新世晚期至全新世早期,受到一系列错断晚更新世晚期沉积的北东或近东西向断裂的切割;东支龙口断裂由两段右阶斜列的次级断层组成,沿断裂带不但有明显的晚第四纪断错活动,而且还发育北北东向晚第四纪生长褶皱,表现出明显的晚更新世晚期至全新世活动特征. 在山东陆地区也发现了与龙口断裂相对应的安丘——莒县断裂,安丘段由一系列右阶斜列的次级断层组成. 从安丘向北至莱州湾凹陷,郯庐断裂带东支活断层构成了一条右旋单剪变形带,每一个次级活断层段相当于带内理论上次级压剪面,在第四纪晚期以来仍以右旋走滑活动为主要特征. 相似文献
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Introduction The Tanlu fault zone, the largest active structure in the eastern region of China, is character-ized by right lateral strike-slip movement with dip-slip component in the Quaternary; it shows great significance for the modern seismicity (FANG et al, 1976; Institute of Geophysics, China Earthquake Administration, 1987; GAO et al, 1980; MA, 1987; LI, 1989; CHAO et al, 1995). The Tanlu fault zone is the boundary between the Jiaoliao block and the North China Plain block of … 相似文献