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core records
相关语句
  芯记录
     Ice Core Records in the Past 2000 Years and Climate Warming during the 18th~20th Centuries
     近2000a来古里雅冰芯记录及19~20世纪的气候变暖
短句来源
     2) The ice core records;
     2)冰芯记录研究;
短句来源
     Comparison of Two Ice Core Records Since 1954 from Mt.Qomolangma (Everest) Region
     1954年以来珠穆朗玛峰地区两支冰芯记录的对比分析
短句来源
     Compared with marine, land and ice core records, this event is a universal abrupt warm event in the transition period of last glacial-interglacial cycle.
     鉴于该暖性回返事件在全球其他地区的海洋、陆地、冰芯记录中也有较普遍的反映,我们认为该事件很可能是一次发生于气候转型期的全球普遍存在的暖性突变事件.
短句来源
     Climatic data, ice core records, the tree ring index and recorded glacier variations have been used to reconstruct a history of climatic and glacial changes in the monsoonal temperate-glacier region of southwestern China during the last 400 years.
     通过对中国季风温冰川区的气候实测资料、冰芯记录、树木年轮指数和冰川进退记载等多种指标的综合分析,较详细地研究了400年以来本区气候与冰川变化。
短句来源
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  “core records”译为未确定词的双语例句
     STUDY ON ICE CORE RECORDS AND THEIR RELATIVE PROCESSES ON THE TIBETAN PLATEAU
     青藏高原冰芯研究
短句来源
     Stable oxygen isotope (δ~ 18 O) in ice core records is good proxy for temperature record and is representative of climatic change.
     稳定氧同位素(δ18O)在冰芯研究中能够很好地反映气候变化,尤其是气温变化的一项重要指标。
短句来源
     RESEARCH ADAVNCES OF ICE CORE RECORDS IN QINGHAI TIBET PLATEAU
     青藏高原冰芯研究进展
短句来源
     3)an increasing content of Ca2+ in ice core records adrying climate. However, for a decreasing contentof Ca2+ there are two possibilities : wet climate andlong-term or serious drought.
     3)冰芯中的Ca2+含量,呈上升状态反映出当时的气候环境往干旱方向发展.而呈下降趋势则有两种可能:一种是气候环境较湿润;
短句来源
     Although the ice core records of annually averaged δ18O are positively correlated with contemporaneous air temperature, especially summer air temperature, the correlation is less significant than that for the precipitation samples due to depositional and post depositional modification processes.
     结果表明,冰芯δ18 O 记录与夏半年(5月~10 月)平均气温之间存在一定程度的正相关关系,而与冬半年(11 月~次年4 月) 平均气温不存在稳定的相关性。
短句来源
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  相似匹配句对
     core.
     内核。
短句来源
     2) The ice core records;
     2)冰芯记录研究;
短句来源
     The characteristics of the core phases on the records of digital seismographs
     核震相在数字仪上的记录特征
短句来源
     Disaster Records
     灾害实录
短句来源
     Core Competition
     核心竞争力的变幻
短句来源
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  core records
Using standard calibration curves the AMS radiocarbon dates are compared with proxy evidence for climatic change from sea core records in the Alborán Sea.
      
Tracking the El Ni?o events from Antarctic ice core records
      
More data on the modern spatial and temporal distribution of diatom species in the Lake El'gygytgyn system will improve inferences from core records.
      
Lake Sediment Core Records of Sulphur Accumulation and Sulphur Isotopic Composition in Central Ontario, Canada Lakes
      
The basal 30?cm of core records the transition of the Lake Forsyth Basin from a tidal embayment to a brackish coastal lake.
      
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In our geological exploration work, focal point are put on the studies of the mode of occurrence of ore bodies, the quality of ores, the origion of deposits, etc., and play less attention on engineering geological information concerning mining, so that a complementary exploitation drilling should be done before mining. It is suggested that the collection of following information on drill core record compiling, core orientation, mine opening geological record compiling, etc., should be strengthened...

In our geological exploration work, focal point are put on the studies of the mode of occurrence of ore bodies, the quality of ores, the origion of deposits, etc., and play less attention on engineering geological information concerning mining, so that a complementary exploitation drilling should be done before mining. It is suggested that the collection of following information on drill core record compiling, core orientation, mine opening geological record compiling, etc., should be strengthened from now on.

以往的地质勘探工作,着重研究的是矿体形态、质量、成因等,而对与将来开采有关的工程地质资料则重视不够,因而在开采前需补做工程钻探。建议今后从地表填图、钻孔岩心编录、岩心定向、坑道编录等方面加强工程地质资料的收集。

The Joint China-Japan Glaciological Expedition in Tibet Plateau, 1989, was made from April to October, 1989. Shallow ice cores, glacial fluctuations, glacial mass balance, meteorology and hydrology were carried out during the expedition. It was found based on shallow ice core record and meteorological data from the expedition that there was an evident climatic warming trend in the Tibet Plateau. The climatic warming trend in the Tibet Plateau resulted in the intense glacial retreating in the Southeast...

The Joint China-Japan Glaciological Expedition in Tibet Plateau, 1989, was made from April to October, 1989. Shallow ice cores, glacial fluctuations, glacial mass balance, meteorology and hydrology were carried out during the expedition. It was found based on shallow ice core record and meteorological data from the expedition that there was an evident climatic warming trend in the Tibet Plateau. The climatic warming trend in the Tibet Plateau resulted in the intense glacial retreating in the Southeast Tibet. Has also resulted in obvious decrease in glacial velocity based on the reconstruction of glacial ogive.

1989年中日青藏高原冰川考察研究于1989年4至10月进行。野外考察与室内分析结果表明,青藏高原近几十年来有明显的升温趋势,这导致了藏东南冰川的强烈退缩和冰川运动速度的明显降低。唐古拉山、昆仑山地区的冰川变化与藏东南有所不同,许多冰川仍具有前进的迹象。唐古拉山、昆仑山地区冰川的另一重要特征是“巴芬式”冰川的存在。δ~(18)O分析说明,大陆性气团与海洋性气团的δ~(18)O是大不相同的。因此δ~(18)O可以作为一种区分气团来源的绝对标志。

A total of 116 samples from the upper 12m of the Luochuan section (35°45'N,105°25'E) was analysed for 10Be concentration and magnetic low field susceptibility.The comparison between 10Be concentration and magnetic susceptibility shows a high degree of similarity with correlation factor r =0.89. Generally higher values of both parameters are observed in the weathered layers and. soils L1SS1 and S1 where the main discrepancies are found. The shape of the magnetic susceptibility curve looks smoother than that of...

A total of 116 samples from the upper 12m of the Luochuan section (35°45'N,105°25'E) was analysed for 10Be concentration and magnetic low field susceptibility.The comparison between 10Be concentration and magnetic susceptibility shows a high degree of similarity with correlation factor r =0.89. Generally higher values of both parameters are observed in the weathered layers and. soils L1SS1 and S1 where the main discrepancies are found. The shape of the magnetic susceptibility curve looks smoother than that of the 10Be concentration. The 10Be concentration record with high resolution was matched to the dated SPECMAP δ18O record in order to establish a 10Be time scale over the last 0.15Ma.The precision of the 10Be time scale is as good as that of the SPECMAP time scale.And also, the 10Be time scale is in good agreement with that of Kukla et al. except for the period S1 which is a little shorter in the magnetic time scale.The accumulation rate has been calculated using the 10Be time scale, which shows three distinct periods with clearly enhanced accumulation rate at 0.02Ma, 0.06 Ma and 0.13MaB.P. They correspond basically to the δ18O stages 2,4 and 6 to be correlated with cold glacial period.A comparison of the dust flux records in chinese loess, Northwest Pacific sediment core V21-146 and Antarctica Vostok ice core reveals the following: 1.There are three periods of enhanced dust flux at 0.02Ma, 0.06Ma and 0. 13Ma B.P. The highest dust fluxes correspond to minima of the northern hemispheric summer insolation according to the theory of Milankovitch.2.The relative amplitudes of the dust peaks at 0.02Ma and 0.06MaB.P. are similar for the loess and the Vostok ice core record. During the Holocence, however,the dust flux at Vostok is considerably smaller than at the Loess Plateau. 3.There is a trend of increasing mean dust flux in all three record, except for the Holocene where the dust flux at Vostok is low. It has been attributed to an overall trend towards drier climate in China caused by the uplift of the Tibetan Plateau. The 10Be flux FB can be considered to be composed of two different components: the atmospheric flux FA, which is caused by the interaction of cosmic ray particles with the atmosphere, and the dust flux FD, which refers to 10Be attached to the grains during their exposure at the surface in the source region of the dust.The total 10Be flux FB is a linear function of the accumulation rate. The total magnetic susceptibility flux Fs is also composed of two components, a dust flux, FD' and an additional unknown flux Fx. The magnetic susceptibility dust flux FD' is assumed to be proportional to the 10Be dust flux FD, i.e. FD'= a FD, a = 0.41 ×10-11cm3 calculated from measurement results of 10Be and magnetic susceptibility FX/Fs varies between 0 and about 80% with low values in loess layers and high values in paleosols and weathered loess. The highest values are observed in paleosol S1 which corresponds to oxygen stage 5.These suggest that FX is dominated by pedogenic in situ formed magnetic susceptibility during warm and humid period.The low values of FX during loess periods which are in accordance with high and variable FD' contributions, 10Be and magnetic susceptibiilty correlated with each other better during loess periods than during soil periods. During soil intervals, a considerable part of the susceptibility signal is formed by pedogenic process which are not correlated with the 10Be concentration.The study on today's precipitation of the Chinese Loess Plateau shows that the pedogenic magnetic susceptibility flux is linearly related to precipitation. The pedogenie magnetic susceptibility, drawn by above way, could be used as a quantitative measure for regional paleorainfall in the Chinese Loess Plateau. Today's mean yearly rainfall at Luochuan(650mm/a) seems to represent a reasonably well constrained average for the first 5 000-6 000 a of the Holocene. Average precipitation values have been calculated and the results are as follows: S0-600mm; L1~310mm; S1~540mm. Palaeoprecipitation is closely related

作者对洛川晚更新世黄土剖面116个样品进行了10Be、磁化率测定。引入磁性物质通量概念,建立了10Be-磁化率模型。磁性物质通量由降尘和就地成壤两组分组成。10Be通量由降水和降尘两部分组成。通过与纯降尘10Be通量比较,定量估算了磁化率中的降尘和成埃两组分贡献,后者在古土壤层最高可达80%,而在黄土高堆积期则可忽略不计。成壤磁性物质通量与古降水率线性相关。求得洛川区域S0、L1和S1三时期年平均降水量分别约为600、310和540mm。

 
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