lake sediment是什么意思 lake sediment在线中文翻译

lake sediment

lake sediment 双语例句

  1. In the 2009 image, the salt lake appears bone-dry, filled with off-white sediment.
    2009年摄取的图像中,盐田显得极为干燥,布满了白色的沉积物。
  2. A relative low lake level between 8660~6010 cal. yr BPwas reflected by the clayey silt sediment with the median size less than 25μam and the sandcontent less than 4%, and the Pediastrum concentration was normally low. Between 6010 and2250 cal. yr BP, the median size and sand content increased greatly, and the Pediastrumconcentration raised sharply, suggesting a relative low lake level. After 2250 cal. yr BP, boththe median size and the Pediastrum abundance abruptly declined, suggesting the lake returnedto high level and the climate changed to humid.
    UG04孔硅藻记录重建的湖泊水位变化基本上支持孢粉重建的古植被和古气候:8660~7230 cal.yr BP硅藻组合以浮游类主导,浮游/底栖比达40以上,指示水位较高,气候略湿润;7230~2330 cal.yr BP浮游类硅藻丰度和浮游/底栖比降低,湖泊处于低水位,气候干旱;2330~930 cal.yr BP浮游类硅藻丰度和浮游/底栖比增加,湖泊水位升高,气候湿润。
  3. The varve was also well preserved in the sediment core of the Sihailongwan maar lake. Volcanic ash was recognized in the sediments of the Sihailongwan maar lake in the Longgang volcanic field of NE China. Volcanic ash studied is located in 70 cm below...
    这一结果不仅表明天池火山历史时期大喷发的规模比原来估计的还要大,并且为建立千年以来四海龙湾沉积物及古气候演化的时间标尺提供了依据。
  4. The release of nitrogen from lake sediment into up-covered static and dynamic water on China Three Gorges University campus which is belonged to the Yangtze River drainage area are studied.
    采用校园水体底泥进行静水和动水状态下的污染物释放规律研究。
  5. Methods Isolation culture and PCR were performed to analyze sulfate-reducing bacteria subgroups in the sediment of Lake Aha in Guizhou Province and a purified strain identified from the sample. Desulfotomaculum, Desulfococcus- Desulfonema-Desulfosarcina and Desulfobulbus were detected in the sample.
    研究环境中硫酸盐还原菌类群和分子生物学特征变化,对认识全球和局部区域环境的硫循环规律、生态系统对酸雨的响应机制以及重金属等环境污染物迁移转化有着重要的理论意义和实际应用价[1~3]。
  6. By declosing the fuctuafion of lake level with lake landform, constructing high resolution time scale and obtaining kinds of information about monsoon climate fiom lake sediment, the palaeoenvironment around Angulinao lake since 8507 yr B. P.
    因此,本项研究以安固里淖为研究对象,从湖泊地貌了解湖面变化规律,从湖心的纹层沉积获取高分辨率的时间标尺,以及有关季风气候演进的各种信息,以探讨湖区8507aB.P。
  7. The surface feature, extending direction of lakes and rivers, the location of the lake shoreline and basin prototype were mainly studied in this paper through the analysis of plaeocurrent and sediment source with other methods for basin analysis, such as the correlation of strata thickness. It shows the framework of depositional environment and the relation between the depocenter and the center of subsidence in different sedimentary times, which helped for determining the shape and distribution of the permeable sands.
    本文主要采用古流与古物源分析的方法,同时借助盆地分析的其他方法如地层厚度对比法等作为辅助手段,研究盆地古地貌、河湖展布、岸线的分布位置及盆地原型,最终揭示盆地各个沉积时期的沉积环境格局、沉积和沉降中心的关系,为确定渗透性砂体的形态及其展布提供了有益的帮助。
  8. The environmental implications of heavy metals from core sediment from the lake (core HLC1) was studied with 210Pb and 317Cs isotope dating method, for the main purpose of discussing the characteristic changes of heavy metals and the influence of human activities.
    以淮河中下游洪泽湖湖底沉积物为研究载体,将放射性核素计年与沉积物重金属元素含量变化分析相结合,初步探讨了近百年来洪泽湖湖底重金属元素变化特征及人类活动对湖泊环境的影响。
  9. Effect on nitrogen and phosphorus concentration in the overlying water and interstitial water with growing of floating-leaved aquatic vegetation was studie by using intact sediment cores in Lake Taihu of Jiangsu.
    利用太湖五里湖污染底泥,在不破坏表层沉积物形态和结构的情况下,利用大口径的采样器采集沉积物柱状样,研究浮叶植物荇菜在此底泥上适应性生长情况及其对水体以及沉积物中氮磷的影响。
  10. From the analysis of the magnetic susceptibility, TOC, TN, pigment, organic car-bon isotope, HI, saturated hydrocarbon and 14C dating etc. of the sediment samples from coresof two boreholes in the Taihu lake, a knowledge of the evolution of paleoenvironment of thelake during the last 14ka is achieved. The results show that the lake has undergone the fol-lowing stages.. The Lake was at a low level, or even became exposed during 14.3-13.3kaBP, reflecting an arid climate. There existed a transitional stage during 13.3-12.4kaBP, the climate being slightly warm and wet. There are indications of a cold and dry climate around 11.5kaBP, probably corresponding to the Younger Drays event, comparable with other areas in east China.
    本文根据东西太湖短柱岩芯的沉积物的物理、化学、生物指标的综合分析,讨论了该区距今14ka来的古气候变化过程,结果表明14.3-13.3kaBP,太湖水位低,环境指标甚至表现为暴露特征,反映了气候干旱:13.3-12.4kaBP,为偏暖湿的过渡阶段;该孔柱270-280cm(11.5kaBP左右)各类指标均明显更映冷干特征,可能是Younger Drays事件的记录,与我国东部其它地区有可比性;约10.9-10kaBP,这一时期是整个研究时段内一个较显著的温暖期。
  11. With a BS degree in Civil Engineering and an MS degree in Water Resource Engineering, he specializes in hydraulic analysis and design, watershed hydrology analysis, manmade lake design, floodplain and floodway analysis, constructed wetland design and design/implementation of erosion and sediment control BMPs.
    他的工作经验主要是水力学分析和设计、流域水文研究、人工湖设计、洪水冲击平原与河道研究、人工湿地设计和泥沙侵蚀控制的设计。
  12. Using the sign if icance of these characters in the aspect of sediment environment, th is paper analyzed C and O iso tope ofQ ian jiang Saline lake and educed conclu sion s: there are good relat ivity betw een the change of clim ate and sedim entenvironm en t and the con tent`s change of C and O iso tope from high to low; it is aobturated saline lake ofinnerland tow ard Q ian jiang saline lake, and the con ten t of C and O iso tope was primarily decided that Ciso tope is - 5‰ and O isotope is - 2‰.
    主要介绍了碳和氧同位素的地球化学特征,利用这些特征在沉积环境方面的指示意义分析了潜江盐湖的碳、氧同位素并得出了以下认识:碳、氧同位素值的高低变化与气候的变化和沉积环境的变化具有很好的相关性;潜江盐湖是一个封闭的内陆盐湖,就该湖而言,其碳同位素值可初步确定为- 5‰,其氧同位素值为- 2‰。
  13. The horizontal and verticle distribution of various forms of selenium in Dianshan Lake sediment have been studied.
    对淀山湖沉积物中硒的存在形态、水平分布及垂直分布进行了探讨,研究了在自然条件下沉积物中硒的分布特征。
  14. Acid volatile sulfides and simultaneously extracted metals of 14 surface sediment samples were determined to investigate the heavy metal pollution in Hongfeng lake, a drinking-water source, located in the Karst area of the Yunnan-Guizhou Plateau. The/was also employed to assess the toxicity of the heavy metals.
    为调查位于喀斯特地区的饮用水水源地红枫湖水库沉积物中重金属的污染情况,测定了14个站位表层沉积物样品的酸挥发性硫化物和同步浸提重金属含量,并对AVS、SEM和/的大小及平面分布进行分析。
  15. Focuses the researches on a eutrophication model after drainage of waste water and drawing water from the Qiantang River to the West Lake, the state variables in the model are phosphorus in algae cells, orthophosphate, phosphorus in detritus and phosphorus in sediment.
    报道了杭州西湖截污和引灌钱塘江水后的一个富营养化模型。它按照年度描述西湖生态系统中的磷循环。状态变量有浮游植物磷、正磷酸盐、碎屑磷和沉积物磷。
  16. Even if Hoover lasts another 1, 100 years (when Bureau of Reclamation officials say Lake Mead will be filled with sediment, turning the dam into an expensive waterfall), its teleological edifice is crumbling. In sixty-five years we have learned that if you take away Hoover, you also take away millions of tons of salt that the Colorado once carried to the sea but which have instead been strewn across the irrigated landscape, slowly poisoning the soil.
    尽管美国垦务局官员说,米德湖会淤积,使胡佛水坝发电成本增高,我们仍假设水坝能再存续1100年,即便如此,以其为目标的体系也将崩塌。65年后,我们明白,没有胡佛水坝,科罗拉多州水域內数百万吨盐早就融入海洋,而不是分散于灌溉田內侵蚀土壤。
  17. The reserves of alluvium and diluvium groundwater has better deposited condition, and the supplement of water resource is abundant; but most of flows-in lake basin area is lacustrine facies sediment, and/or the weather, water resource exist mainly as solid form, and the groundwater resource is indigence.
    南部河谷冲洪积层储水条件较为优越、且补给水源充分,其地下水和地表水构成了一个统一的水资源系统和完整的水生态体系;而北部内流湖盆地区多为湖相沉积、且受气象因素制约,水资源多以固体形式存在,因而地下水资源总体贫乏。
  18. Influenced by the exterior source input of the detrital matters, U-series dating using aragonite is not suitable to the study of Lake Sugan sediment and a further study is required.2. The isotopes study of precipitation-groundwater-lake water system in Lake Sugan drainage area indicates that in modern climate system, the precipitation in Lake Sugan drainage area is mainly supplied by the water vapor carried by Westerly.
    沉积物文石的铀系测年受到外源碎屑输入的影响,在苏干湖并不适用,需做进一步的研究。2、苏干湖流域降水-地下水-地表径流-湖水同位素系统研究表明,现代气候条件下苏干湖流域大气降水主要来源于西风环流携带的水汽输入。
  19. Wan Guojiang and Tang Degu:2000, Recent climate changes recorded by sediment grain sizes and isotopes in Erhai Lake.
    王雨春 万国江王仕禄李社红黄荣贵:2000,红枫湖、百花湖沉积物中磷的存在形态研究。
  20. Nanxiong Basin, brought together a variety of reptiles, in the rivers and lakes along the Strip, to survive, surrounded by mountains processes, a large number of weathered debris deposited by rivers into the basin down the number of dead dinosaur remains or has been swallowed by floods and buried in the dinosaur dinosaur eggs in the soil and remain in the river and lake sediment layer of dinosaur footprints, etc., along with sediments were deeply buried in the ground, after a long process to become a variety of petrochemical fossil, such as dinosaur bones, dinosaur eggs and remains fossils; the late Cretaceous period, subject to the final phase of the impact of Yanshan movement, Nanxiong basin fault activity occurred weak and short-term uplift, Nanxiong Group strata subjected to a period of erosion; to the mid-Cenozoic Paleocene, again under the Nanxiong Basin Shen, their acceptance of the Early Tertiary Zhai Qun Luo Buddha-phase accumulation of lacustrine and alluvial; the early Eocene, uplift of the basin and caused another short-lived hiatus, the latter sinking are also trained in Danxia pluvial phase and rivers and lakes phase accumulation; the late Oligocene, by the Himalayan movement affected the whole basin and the northern part of Guangdong, as elsewhere, the general uplift, accompanied by lifting ramp fault activity, erosion of the basin into areas, southern margin of the basin due to uplift of the higher, first of all eroded overlying Danxia groups and Luo Buddha Walled group, so that Nanxiong base layer containing dinosaur fossils exposed to the surface, this entire process is a lengthy process.
    南雄盆地聚集了各种爬行动物,在河湖沿岸地带繁衍生息,四周山地突起,大量风化碎屑被河流带到盆地中沉积下来,一些死亡的恐龙遗体或已被洪水吞噬的恐龙及埋藏在土层中的恐龙蛋和留在河湖泥沙层的恐龙脚印等等,随同沉积物被深深埋藏于地下,经长期的石化过程而变成各种化石,如恐龙骨骼、恐龙蛋及遗迹化石;白垩纪末,受最后一期燕山运动的影响,南雄盆地发生微弱的断裂活动和短期抬升,南雄群地层遭受一段时间的侵蚀;至新生代古新世中期,南雄盆地再次下沉,其上接受早第三纪罗佛寨群河湖相及洪积相堆积;始新世初,该盆地又有短暂抬升并造成沉积间断,后下沉又接受丹霞洪积相与河湖相堆积;渐新世末,受喜山运动影响,整个盆地与粤北其他地区一样,普遍抬升,并伴随抬斜断裂活动,该盆地成为侵蚀区,盆地南缘因抬升较高,首先侵蚀掉上覆丹霞群和罗佛寨群,使南雄群含恐龙化石层暴露于地表,这整个过程是一个漫长的过程。

lake sediment 单语例句

  1. Geologists at Rhode Island's Brown University used carbon dating to measure the age of sediment on the lake floor.

lake sediment

中文翻译
1
湖泊沉积物
相关单词
lake sediment