期刊文献+
任意字段
题名或关键词
题名
关键词
摘要
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息
共找到20篇文章
< 1 >
每页显示 20 50 100
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
显示方式：
Generation methodology of isolines of earthquake ground motion 认领 引用 被引量：3
1
作者 Li Wei LiShanyou 《Earthquake Engineering and Engineering Vibration》 SCIE EI 2010年第4期473-480,共8页
Due to limited financial resources and challenging geographical conditions,the number of seismic observation networks in China is still very small and they are not widely distributed.Therefore,the available earthquake... Due to limited financial resources and challenging geographical conditions,the number of seismic observation networks in China is still very small and they are not widely distributed.Therefore,the available earthquake records obtained after an earthquake have been limited.In this paper,auto-generation methods to obtain strong motion isolines under different conditions are proposed.To verify the accuracy of these methods,some examples,including application to the 2008 Wenchuan earthquake,are given. 展开更多
关键词 isolines interpolation method attenuation law strong motion observation networks
暂未订购 下载PDF
Responses of Flowering Time to Elevated Carbon Dioxide among Soybean Photoperiod Isolines 认领 引用 被引量：1
2
作者 James A. Bunce Wilbert Cruz Hilacondo 《American Journal of Plant Sciences》 CAS 2016年第6期773-779,共7页
Changes in the phenology of flowering in soybeans caused by long-term growth at elevated CO2 may be important to the responses of seed yield to elevated CO2. Here we utilized near-isogenic lines of soybeans differing ... Changes in the phenology of flowering in soybeans caused by long-term growth at elevated CO2 may be important to the responses of seed yield to elevated CO2. Here we utilized near-isogenic lines of soybeans differing in three genes influencing photoperiod sensitivity to determine whether these genes affected the response of flowering time to elevated CO2. Six isolines of Harosoy 63 were grown at ambient (380 μmol?mol-1) and elevated (560 μmol?mol-1) CO2 concentrations in the field using free-air CO2 enrichment systems, in air-conditioned glasshouses with natural summer photoperiods, and in indoor chambers with day lengths of 11, 13, 15, and 17 hours. The effect of CO2 concentration on flowering time varied with genotype, and there was also an interaction between CO2 and photoperiod in all genotypes, as indicated by ANOVA. Elevated CO2 accelerated flowering in some cases, and delayed it in other cases. For all three of the isolines with single dominant genes, elevated CO2 decreased the days to first open flower at the longest photoperiod. At the shortest photoperiod, elevated CO2 delayed flowering in all but one isoline. The all-recessive isoline had slower flowering at elevated CO2 at both the shortest and the longest photoperiods, and also in the field and in the glasshouse. Delayed flowering at elevated CO2 in the field and glasshouse was associated with an increased final number of main stem nodes. It is concluded that the E1, E3, and E4 genes each influenced how the time to first flowering was affected by CO2 concentration at long photoperiods. 展开更多
关键词 Carbon Dioxide Concentration Flowering Soybean Photoperiod Isolines
暂未订购 下载PDF
IG-Mamba:Isoline-Guided Evolutionary State Space Model for Physics-Informed Underwater Image Restoration 认领 引用
3
作者 Yiqiao Xiang Jingchun Zhou +1 位作者 Ruijie Liu Dehuan Zhang 《Computers, Materials & Continua》 SCIE EI 2026年第9期1559-1575,共17页
Underwater imagery is degraded by depth-dependent absorption and scattering,which often introduce color casts and contrast attenuation.Although recent Vision Mamba models provide efficient long-range dependency modeli... Underwater imagery is degraded by depth-dependent absorption and scattering,which often introduce color casts and contrast attenuation.Although recent Vision Mamba models provide efficient long-range dependency modeling,their conventional 2D scanning patterns are not explicitly designed to exploit the depth-correlated structure of underwater degradation and may therefore weaken geometry-aware feature dependencies.To address this limitation,we propose Isoline-Guided Evolutionary Mamba(IG-Mamba),a physics-inspired framework that uses a depth-correlated potential prior to organize state-space token propagation.Specifically,we introduce a Topology-Preserving Isoline Scanning mechanism.By leveraging a geometric prior,this mechanism quantizes the scene into discrete isopotential strata to guide Mamba sequences along geometry-aware orders,thereby preserving local spatial topology while establishing depth-aware long-range dependencies.Furthermore,a Potential Field Evolution method is developed to mitigate the domain discrepancy between terrestrial geometric priors and underwater optical attenuation.Driven by the reconstruction objective,the network adaptively refines the raw geometric anchor into a restoration-oriented optical potential field via a learned residual map.Finally,features are modulated by a transmission-inspired gate motivated by the Jaffe-McGlamery transmission term,enabling spatially adaptive feature reweighting under scattering-dominant conditions.Extensive experiments demonstrate that IG-Mamba achieves strong performance across multiple benchmarks,offering a physics-grounded perspective for dependency modeling in underwater vision. 展开更多
关键词 Underwater image enhancement state space model isoline scanning physics-informed learning
暂未订购 下载PDF
Development of a DEM in the GIS“PANORAMA”Based on a Topographic Map for the Southern Territory of the Fergana Valley 认领 引用
4
作者 Dinara Abjaparova Erkin Mirmakhmudov +2 位作者 Bekzod Toshonpv Zhanarbek Sultanov Daniyar Muhtarov 《Journal of Environmental & Earth Sciences》 CAS 2025年第8期16-21,共6页
The capabilities of GIS for constructing a digital elevation model of a mountainous area and visualizing a spatial image of the terrain are given in this paper.Graphic,digital data and topographic maps,which are the m... The capabilities of GIS for constructing a digital elevation model of a mountainous area and visualizing a spatial image of the terrain are given in this paper.Graphic,digital data and topographic maps,which are the main sources for GIS,are described.The methods of vectorization of isolines and the requirements for technical means of processing graphic materials are presented in detail.The advantages and disadvantages of the DEM of a mountainous region are shown here.Segmentation methods using an interpolation polynomial are described in detail.A DEM of the mountainous area where the border between the republics runs was constructed in 2D and 3D formats using the GIS Panorama.Reducing the chord length when segmenting isolines on topographic maps leads to more accurate DEM construction.A vertical profile of a mountainous area with a visibility zone between two points was constructed.It is expected that the improved latitude,longitude and altitude parameters of the topographic map will be used to form a regional geodetic network and geospatial analysis of mountain ranges.It is proposed to use not only satellite data,but also classical geodetic networks and maps.It is recommended to use satellite and aerial photography to clarify the topographic and geodetic support of the studied area. 展开更多
关键词 Topographic Map Coordinates Segmentation Vectorization Isolines Polynomial DEM GIS
暂未订购 下载PDF
Combined Action of Uniform Flow and Oscillating Flow Around Marine Riser at Low Keulegan-Carpenter Number 认领 引用 被引量：4
5
作者 DENG Yue HUANG Weiping ZHAO Jingli 《Journal of Ocean University of China》 SCIE CAS 2014年第3期390-396,共7页
With the increase of petroleum and gas production in deep ocean, marine risers of circular cylinder shape are widely used in the offshore oil and gas platform. In order to research the hydrodynamic performance of mari... With the increase of petroleum and gas production in deep ocean, marine risers of circular cylinder shape are widely used in the offshore oil and gas platform. In order to research the hydrodynamic performance of marine risers, the dynamic mesh technique and User-Defined Function(UDF) are used to simulate the circular cylinder motion. The motion of a transversely oscillating circular cylinder in combination of uniform flow and oscillating flow is simulated. The uniform flow and oscillating flow both are in x direction. SIMPLE algorithm is used to solve the Navier-Stokes equations. The User-Defined Function is used to control the cylinder transverse vibration and the inlet flow. The lift and drag coefficient changing with time and the map of vorticity isolines at different phase angle are obtained. Force time histories are shown for uniform flow at Reynolds number(Re) of 200 and for the combination of uniform and oscillating flows. With the increase of amplitude of oscillating flow in combined flow, the change of lift amplitude is not sensitive to the the change of cylinder oscillating frequency. Lift amplitude increases with the increase of oscillating flow amplitude in the combined flow, but there is no definite periodicity of the lift coefficient. The drag and inertia force coefficients change when the maximum velocity of the oscillating flow increases in the combined flow. The vortex shedding near the circular cylinder shows different characteristics. 展开更多
关键词 transversely oscillating cylinder circular cylinder marine riser uniform flow oscillating flow vorticity isolines
暂未订购 下载PDF
Spatio-temporal Changes of ≥10℃ Accumulated Temperature in Northeastern China since 1961 认领 引用 被引量：25
6
作者 YAN Minhua LIU Xingtu +2 位作者 ZHANG Wei LI Xiujun LIU Shi 《Chinese Geographical Science》 SCIE CSCD 2011年第1期17-26,共10页
The objective of this study was to provide reliable basis for decision making for national food security and layout and structure adjustment of grain production in the northeastern China. The data of mean daily air te... The objective of this study was to provide reliable basis for decision making for national food security and layout and structure adjustment of grain production in the northeastern China. The data of mean daily air temperature of 1961-2009 from 106 meteorological stations in the northeastern China were chosen in this study. Using statistical methods and isoline method, the spatio-temporal changes of various decadal ≥10℃accumulated temperature and the climatic means of ≥10℃ accumulated temperature were studied in this paper. The results showed that 1） The geo- graphical distribution of ≥10℃ accumulated temperature in the northeastern China could be influenced directly by the latitude, longitude and altitude. If latitude moved one degree northward, the average decrease amplitude of the climatic means was 101.9℃ in the study area. 2） The means of decadal ≥10℃ accumulated temperature rose since the 1980s, and their increase amplitudes became larger in the 1990s and the 2010s obviously. Compared with those of the 1980s, ≥10℃ accumulated temperature increased by about 100℃ in the mountainous and plain areas in the 1990s; compared with those of the 1990s, ≥10℃ accumulated temperature increased by about 200℃ in the Hulun Buir High Plain and the Songnen Plain, and 100℃ in the Sanjiang Plain and the Liaohe Plain in the 2010s. 3） The means of the decada ≥10℃accumulated temperature for 106 meteorological stations in the northeastern China increased with the rate of 145.57℃/10yr in 1961-2009.4） The climatic means of ≥10℃ accumulated temperature increased from 1961-1990 to 1971-2000 and 1981-2009. Compared with the climatic mean of 1971-2000, that of 1981-2009 had increased by above 50℃ in most of the study area, even up to 156℃. Compared with the climatic mean of 1961-1990, that of 1981-2009 increased by above 100℃ in most parts of the study area, even up to 200℃. 5） The maximum northward shift, eastward and westward extension amplitudes of3100℃, 3300℃ and 3500℃ isolines were larger among all isolines for the climatic means of the three phases. Compared with the positions of the isolines of 1961-1990, those amplitudes of 31000C isoline of 1981-2009 were 145 km, 109 km and 64 km, respectively; those of 3300℃ isoline were 154 km, 54 km and 64 km, respectively; and the maximum northward shift of 3500℃ isoline was about 100 km. 展开更多
关键词 ≥10℃ accumulated temperature climatic mean isoline method northeastern China
暂未订购 下载PDF
The Electrical Resistivity of Cement Paste Incorporated with Retarder 认领 引用 被引量：13
7
作者 李宗津 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2003年第3期76-78,共3页
A non contacting electrical resistivity measurement device was used for measuring the electrical resistivity of cement paste incorporated with retarder.The hydration process was divided into dissolving period,setting ... A non contacting electrical resistivity measurement device was used for measuring the electrical resistivity of cement paste incorporated with retarder.The hydration process was divided into dissolving period,setting period,hardening period.With the increase of the retarder,the dissolution time will increase.The setting time happens between minimum point time and inflexion point time based on the electrical resistivity curve.The strength isoline was proposed to predict the strength trend. 展开更多
关键词 electrical resistivity non contacting setting time retarder strength isoline
暂未订购 下载PDF
Predicting coal mining faults using combined rock relationships 认领 引用 被引量：1
8
作者 SUN Hong-quan BAO Si-yuan +1 位作者 LI Lin LIAO Tai-ping 《Mining Science and Technology》 2009年第6期745-749,共5页
By studying different compressive strengths and changes in the characteristics of rocks,five variables were selected to predict faults in coal mines. Drillholes in the mined area were divided into two populations, i.e... By studying different compressive strengths and changes in the characteristics of rocks,five variables were selected to predict faults in coal mines. Drillholes in the mined area were divided into two populations, i.e., drillholes containing faults and drillholes without faults. Discriminant functions were established from the values of the five variables using Fisher's approach. Drillholes in the non-mined areas were allocated to one of the two populations by using discriminant functions. The terrenes of each drillhole were divided into 10 sections, above and below a minable coal seam. Each section has 10 layers of rocks. The population to which each drillhole in a section belongs is sorted out and the probability of each drillhole with faults obtained,i.e., a contour map of predicting the probability of faults in coal mining is shown. A comparison with the real distribution of faults shows that the precision of accurately predicting faults is greater than 70 per cent. 展开更多
关键词 geostatistics discriminant analyses terrain combination mine fault prediction isoline map of probability
暂未订购 下载PDF
Isoline两个新代谢物的制备及其理化性质(英文) 认领 引用 被引量：1
9
作者 汤俊 张勉 +4 位作者 王峥涛 赤尾光昭 中村■夫 服部征雄 徐国钧 《中国天然药物》 2003年第1期21-23,共3页
目的:为进一步研究isoline的代谢和毒理,采用化学方法制备其代谢产物。方法:分别采用水解,氮氧化和脱氢化反应将isoline转化为与代谢和毒理研究相关类型的产物。结果与结论:成功地制备了五个化合物,其中两个为新化合物,其结构经UV,IR,MS... 目的:为进一步研究isoline的代谢和毒理,采用化学方法制备其代谢产物。方法:分别采用水解,氮氧化和脱氢化反应将isoline转化为与代谢和毒理研究相关类型的产物。结果与结论:成功地制备了五个化合物,其中两个为新化合物,其结构经UV,IR,MS和NMR分析得以鉴定。 展开更多
关键词 Isoline 代谢物 制备 理化性质 毒理
暂未订购 下载PDF
Isoline致小鼠急性肝损伤后肝亲水性蛋白的双向电泳分析 认领 引用 被引量：1
10
作者 王再勇 季莉莉 +3 位作者 王长虹 张勉 杨永清 王峥涛 《中国天然药物》 2006年第5期368-372,共5页
目的:利用双向电泳技术(2-DE)观察吡咯里西啶生物碱isoline致小鼠急性肝损伤后对肝内亲水性蛋白表达的影响。方法:小鼠一次性灌胃给药isoline,通过血清生化指标检测和病理切片观察isoline的急性肝毒性,抽提肝组织亲水性蛋白做双向电泳分... 目的:利用双向电泳技术(2-DE)观察吡咯里西啶生物碱isoline致小鼠急性肝损伤后对肝内亲水性蛋白表达的影响。方法:小鼠一次性灌胃给药isoline,通过血清生化指标检测和病理切片观察isoline的急性肝毒性,抽提肝组织亲水性蛋白做双向电泳分析,利用PDQuest软件以正常组作为参考胶进行匹配分析。结果:丙氨酸氨基转移酶(ALT)、天冬氨酸氨基转移酶(AST)检测和肝组织病理切片结果表明,口服isoline造成小鼠急性肝损伤,双向电泳图像分析发现与对照组相比,isoline组小鼠肝组织亲水性蛋白表达图谱中有39个蛋白斑点变化差异显著,其中新出现5个蛋白斑点,缺失10个蛋白斑点。结论:Isoline灌胃可以造成小鼠急性肝损伤,其中蛋白双向电泳分析结果中差异表达的蛋白质点可能参与了isoline的急性肝毒性作用。 展开更多
关键词 吡咯里西啶生物碱 Isoline 双向电泳 蛋白质组
暂未订购 下载PDF
Two New Lactones Metabolized from Isoline by Rat Liver Microsomes 认领 引用
11
作者 JunTANG ZhengTaoWANG +2 位作者 TeruakiAKAO NorioNAKAMURA MasaoHATTORI 《Chinese Chemical Letters》 SCIE CAS 2003年第12期1271-1274,共4页
Two new metabolites, namely bisline lactone and isolinecic acid lactone, were isolated from the resultant incubates after a scale-up incubation of isoline with rat liver microsomes. Their structures were determined by... Two new metabolites, namely bisline lactone and isolinecic acid lactone, were isolated from the resultant incubates after a scale-up incubation of isoline with rat liver microsomes. Their structures were determined by spectroscopic data, especially those from 1D and 2D NMR experiments. 展开更多
关键词 Pyrrolizidine alkaloid metabolite isoline bisline lactone isolinecic acid lactone.
暂未订购 下载PDF
The Study of Two Geomagnetic Jerks in China 认领 引用 被引量：1
12
作者 Zhang Suqin Yang Dongmei Li Qi Zhao Yongfen 《Earthquake Research in China》 2009年第2期192-199,共8页
This paper analyzes the first differences of the annual means (annual rate) for the Y and Z components of the geomagnetic field from nine magnetic observatories in China, measured from 1985 to 2003. The 1991 jerk was ... This paper analyzes the first differences of the annual means (annual rate) for the Y and Z components of the geomagnetic field from nine magnetic observatories in China, measured from 1985 to 2003. The 1991 jerk was obvious in the Y component measured but not clear for the Z component. Rapid changes in the Z components were ubiquitous around 2000-2001, but not seen for the Y component. External effects were removed from the monthly means by comparing the monthly mean of the geomagnetic field components at the observatories with the monthly time series of the A_p geomagnetic index. However, some examples were analyzed and showed whether external effects were removed or not, there was no marked distinction in determining the jerks in China for the Y component and the Z component of the geomagnetic field. Finally, the isolines of the first differences of the annual means were used to analyze the spatial and temporal distributions of the jerks. 展开更多
关键词 Jerk Annual rate External field Isolines Ap index
暂未订购 下载PDF
An Accurate and Time-Efficient Algorithm for Computing Isoline Sourced from Polylines on Triangle Meshes 认领 引用
13
作者 Wenlong Meng Hang Yu +2 位作者 Yixuan Geng Yanbo Pu Shiqing Xin 《Tsinghua Science and Technology》 SCIE EI CAS CSCD 2026年第2期1092-1110,共19页
Geodesic isolines derived from polylines constitute a crucial element within geographic information systems,playing a pivotal role in enhancing the understanding of geographical terrains.Current methods for delineatin... Geodesic isolines derived from polylines constitute a crucial element within geographic information systems,playing a pivotal role in enhancing the understanding of geographical terrains.Current methods for delineating isolines sourced from polylines on discrete meshes often rely on simplistic linear interpolation.However,these methods fall short in accuracy due to the complex,non-linear nature of geodesic distance fields,thereby inadequately capturing intricate topological features present in real isolines.To tackle this challenge,we demonstrate that Apollonius diagrams can effectively encode the geometric attributes of isolines on meshes and extract the isolines using the Apollonius diagrams with geodesic metric.Moreover,exact geodesic computation is computationally intensive and memory-demanding.In response,we introduce a graph-based approach enhanced by Steiner point insertion,offering a practical method for computing geodesic distances.Drawing on these strategies,we introduce an accurate and efficient algorithm for polyline-sourced isoline computation on triangle meshes.Comprehensive evaluations indicate that our approach yields significantly more accurate geodesic isolines compared to the commonly employed linear interpolation. 展开更多
关键词 isolines geodesic distance apollonius diagram ridge triangle mesh path planning
暂未订购 下载PDF
Study of Electromagnetism Compatibility of Bleeper Station 认领 引用
14
作者 Huang Jing-cheng Shi Xin-zhi Xu Peng-gen 《Wuhan University Journal of Natural Sciences》 EI CAS 2001年第4期812-816,共5页
Transmitted power will decrease, cross-modulate distortion and inter-modulate distortion will be caused and antenna pattern will shift if transmitted antennas are fixed together. All these will lead to the alteration ... Transmitted power will decrease, cross-modulate distortion and inter-modulate distortion will be caused and antenna pattern will shift if transmitted antennas are fixed together. All these will lead to the alteration of area coverage. According to the basic theory of electromagnetism compatibility a computer model is established. We do some quantitative analysis of the problems above and give total number, arrangement mode and distance between antennas of bleeper station that operate at 150 MHz. The relation of these factors above are also given. All these are basis of the arrangement of antenna group of bleeper station. 展开更多
关键词 bleeper station transmitted antenna group pattern traveling wave coefficient isoline of field strength
暂未订购 下载PDF
Analysis of Spatial Distribution Pattern of Tobacco Mosaic Virus (TMV) Based on Geostatistics 认领 引用
15
作者 WEI Guo-sheng BAI Sheng +2 位作者 HUANG Dian LIE Fan-jun XIA Peng-liang 《Plant Diseases and Pests》 2012年第1期62-63,68,共2页
Using geostatistical method, the semi-variation function models of tobacco mosaic virus （TMV） in east-west and north-south directions were established, and the distribution pattern of TMV in large scale space was st... Using geostatistical method, the semi-variation function models of tobacco mosaic virus （TMV） in east-west and north-south directions were established, and the distribution pattern of TMV in large scale space was studied. The results showed that the distribution pattern of the disease in east-west and north-south directions belonged to linear model with abutment, and the spatial distribution pattern within the investigated areas was aggregated model. The spatial correlation distances in east-west and north-south directions were 29.953 4 and 47.813 8 km, and the spatial variabilities were 95.71% and 80.05%, respectively. This indicated that they had strong spatial correlation. Isoline map accessed by Kringing interpolation method could clearly reflect the spatial aggregated model. 展开更多
关键词 Geostatistics Tobacco mosaic virus Isoline map China
暂未订购 下载PDF
允许双音IMD测试的射频分配器 认领 引用
16
《今日电子》 2002年第12期66-66,共1页
关键词 双音IMD测试 射频分配器 ISoline混合型 双音互调失真
暂未订购 下载PDF
Gossypium herbaceum Negative Mutant for Fiber Elongation a Useful Isoline for Identification of Genes for Fiber Elongation 认领 引用
17
作者 KATAGERI I S KHADI B M ANANDKUMA P REDDY V S VAMADEVAAH H M 《棉花学报》 北大核心 2008年第S1期
Actin cytoskeleton plays an important role in cell morphogenesis in plants as demonstrated by pharmacological,biochemical,and genetic studies.The actin cytoskeleton may be involved in
关键词 Gossypium herbaceum Negative Mutant for Fiber Elongation a Useful Isoline for Identification of Genes for Fiber Elongation gene
暂未订购 下载PDF
SOME CRITERIA OF THE EXISTENCE OF LIMIT CYCLES FOR PLANAR AUTONOMOUS SYSTEMS 认领 引用
18
作者 杨启贵 《Annals of Differential Equations》 1998年第1期91-104,共14页
The purpose of this paper is to give some necessary and sufficient conditionsfor the non intersection of trajectories of the planar autonomous system=P(x,y), =Q(x,y) (E) with the vertical isocline, and to pres... The purpose of this paper is to give some necessary and sufficient conditionsfor the non intersection of trajectories of the planar autonomous system=P(x,y), =Q(x,y) (E) with the vertical isocline, and to present some results which guarantee the nonexistence and the existence of limit cycles of (E). our results extend and improve the corresponding ones in are extended and improved. 展开更多
关键词 limit cycles Poincaré Bendixson theory planar autonomous system vertical isoline
Research on electromagnetic visualization method 认领 引用 被引量：2
19
作者 Fan Yang Zhenghong Dong 《International Journal of Modeling, Simulation, and Scientific Computing》 EI 2020年第5期20-30,共11页
It is significantly important to have the knowledge of electromagnet situation of battlefield,because it contains a lot of useful information to understand the situation of the whole battlefield.Electromagnet situatio... It is significantly important to have the knowledge of electromagnet situation of battlefield,because it contains a lot of useful information to understand the situation of the whole battlefield.Electromagnet situation visualization would be very useful to help people to understand the situation,and handle battlefield situation,such as the size and quality of the electromagnetic radiation source,target objects,and operational purposes by the two parties engaged in combat scale.This paper proposes two electromagnet situation visualization methods,one is an isoline tracking algorithm based on floating rectangle and the other is an isoline filling algorithm based on linear interpolation,which also solves the problem of low accuracy and low efficiency.This paper also implements and displays the visualization results using different ways of demonstration modules,which show that the visualization results are more intuitive. 展开更多
关键词 Electromagnet situation electromagnet environment isoline tracking algorithm isoline filling algorithm
Distribution characteristics of magnetic susceptibility of the surface sediments in the southern Yellow Sea 认领 引用 被引量：9
20
作者 GE Shulan SHI Xuefa HAN Yibing 《Chinese Science Bulletin》 2003年第B6期37-41,共5页
The characteristic distributions of magnetic susceptibility(MS)are analyzed on the basis of susceptibility of 172 surface sediment samples in the southern Yellow Sea(SYS).The preliminary results are as follows:first,t... The characteristic distributions of magnetic susceptibility(MS)are analyzed on the basis of susceptibility of 172 surface sediment samples in the southern Yellow Sea(SYS).The preliminary results are as follows:first,the distributions clearly correspond to different modern sediment assemblages in the continental sea,which indicates different sediment origins.With the 30μCGS isoline being taken as demarcation line,the study area can then be divided into section H(high MS value area)and section L(low MS value area).Section H is mainly adjacent to land with two main sources of the Changjiang River and the Huanghe River.Section L is mainly an eddy sediment area,where Yellow Sea Cold Water is entrenched all the year round.The distribution pattern of MS could tell apart strong or weak hydrodynamic conditions and has a close relation to the circulation system in this area.At the areas of the SYS Circumfluent and northern East China Sea(NECS)Circumfluent(weak hydrodynamic),the MS has low values,while in the areas of Coastal Current(strong hydrodynamic),the values are high.At the same time,the oxidizing areas tend to take on higher MS,while the reducing areas have lower one.It seems safe to say that the MS in the continental sea reflects more of the sediment origin and sedimentary environment,which is different from that of loess,lake and surface soil as a climate proxy. 展开更多
关键词 magnetic susceptibility isoline South Yellow Sea Circumfluent and North East China Sea Circumfluent sediment source
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
上一页 1 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈