助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   equatorial africa 的翻译结果: 查询用时:0.01秒
图标索引 在分类学科中查询
所有学科
更多类别查询

图标索引 历史查询
 

equatorial africa
相关语句
  “equatorial africa”译为未确定词的双语例句
     Whether this relationship can be established for the Holocene drought events at century-scale reported from tropical and equatorial Africa is still poorly known.
     这种关系是否也适用于全新世百年尺度的干旱事件,仍是有待研究的问题。
短句来源
     Based on a literature survey of 22 lacustrine sediment records from the Tibetan Plateau, its northern adjacent region--Xinjiang, and equatorial Africa and northern African area, and 18 loess-palaeosoil profiles from the Loess Plateau and the Tibetan Plateau, the paper analyzes palaeocliamtic oscillations in Asian and African monsoon areas since 40 kaBP.
     基于18个黄土/古土壤序列(黄土高原与青藏高原)与27个湖泊沉积序列(青藏高原、新疆、云南与赤道非洲及其以北的非洲季风区)对比分析了东亚季风区、印度季风区与非洲季风区40ka以来的区域环境演变特征。
短句来源
  相似匹配句对
     africa
     走入非洲
短句来源
     AFRICA
     非洲
短句来源
     ON IRREGULARITIES OF EQUATORIAL SPREAD F (I)
     论赤道扩展F的密度不规则体(Ⅰ)
短句来源
     It gathers six countries of central Africa, Cameroon, the Central African Republic, the Republic of Congo, Gabon, Equatorial Guinea and Chad.
     它包括了6个该地区国家:喀麦隆,加蓬,刚果,中非共和国,赤道几内亚和乍得。
短句来源
     THE EQUATORIAL IONOSPHERIC BUBBLE AND THE QBO
     赤道电离层泡与大气准两年振荡
短句来源
查询“equatorial africa”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  equatorial africa
At times, a pronounced trough of low barometric pressure extends from equatorial Africa northward, over the Red Sea and the eastern Mediterranean countries, i.e., the Red Sea Trough.
      
My findings demonstrate that guerezas are more dietarily flexible than was previously known, which may help to explain why the species can survive in such a wide variety of forested habitats across equatorial Africa.
      
We attribute the variability in runoff, and hence precipitation, to Holocene variability in Indian or Atlantic Ocean SSTs or to shifts in the relative contribution of Indian and Atlantic moisture sources to the western Rift of equatorial Africa.
      
A field study of trace gas emissions from biomass burning in Equatorial Africa gave methyl chloride emission ratios of 4.3×10-5±0.8×10-5 mol CH3Cl/mol CO2.
      
Considering some ten desmid floral regions as distinguished in the beginning of this century, Indo-Malaysia/Northern Australia, tropical America, and equatorial Africa come to the fore as most pronounced.
      
更多          


A preliminary comparison between the climatic evolution of the arid regions in North Africa and North China showed that the variations in the continental aridity on time scales of 104 years were approximately synchronous over the last 140 ka BP. Whether this relationship can be established for the Holocene drought events at century-scale reported from tropical and equatorial Africa is still poorly known. Based on 569 reliable radiocarbon dates from surface fresh water indicators from the Sahara and...

A preliminary comparison between the climatic evolution of the arid regions in North Africa and North China showed that the variations in the continental aridity on time scales of 104 years were approximately synchronous over the last 140 ka BP. Whether this relationship can be established for the Holocene drought events at century-scale reported from tropical and equatorial Africa is still poorly known. Based on 569 reliable radiocarbon dates from surface fresh water indicators from the Sahara and 158 dates on palaeosol and lake sediments from the arid regions in North China, we demonstrate here that the Holocene environments in both regions have been affected by several approximately in phase arid events, inlaid in the slow trends attributable to the orbital forcing. The variations of the southern margins of the deserts, probably associated with the oscillations of the meteorological equator (or ITCZ) in Africa and with the northern monsoon front in China, are documented by the latitudinal distribution of these in-dicators through time. The most startling aspects are the severe interval at 4 000 years BP and a prolonged drier interval around 6 000 years BP. The last is given as the Holocene Optimum. However, this episode is in agreement with an important number of pollen, ice-core, lacustrine and pacific eolian dust records, and also with the lower atmospheric methane concentration recorded in the GRIP ice-core. The existence of this arid interval at low latitudes cannot be explained by higher evapotranspiration in the mid - Holo-cene, but is attributable to the weakening of the summer monsoon circulation.

过去对北非和中国干旱区140 ka BP来环境演化的初步对比表明,两地的干旱度在万年时间尺度上基本同步。这种关系是否也适用于全新世百年尺度的干旱事件,仍是有待研究的问题。本文对撒哈拉地区569个地表淡水指示物和我国北方干旱区158个古土壤和湖泊沉积的~(14)C年代数据进行了时空频数统计分析,揭示出两地沙漠在全新世期间至少经历了三次同时性的、百年—千年尺度的干旱事件,叠置于季风气候对地球轨道变化响应的总体趋势上;沙漠在纬向上的进退主要受控于季风前沿的伸缩幅度,说明两个季风系统的短尺度变化可能受统一因素控制。最为显著的干旱事件发生于约4 ka BP。两地干旱区在过去认为的6 ka BP前后的全新世气候适宜期并没有表现为稳定的湿润环境。我国过去发现的该时期不少的干旱证据被解释为高温所导致的强烈蒸发作用所致。但全新世中期的干旱期在热带的存在及其与冰心记录中低甲烷事件的吻合难以用蒸发来解释,而应与夏季风环流的减弱有关。

Based on a literature survey of 22 lacustrine sediment records from the Tibetan Plateau, its northern adjacent region--Xinjiang, and equatorial Africa and northern African area, and 18 loess-palaeosoil profiles from the Loess Plateau and the Tibetan Plateau, the paper analyzes palaeocliamtic oscillations in Asian and African monsoon areas since 40 kaBP. The result indicates that lakes status records and loess-plaeosoil records showed regionally similar patterns of climate changes over the last 40 ka in...

Based on a literature survey of 22 lacustrine sediment records from the Tibetan Plateau, its northern adjacent region--Xinjiang, and equatorial Africa and northern African area, and 18 loess-palaeosoil profiles from the Loess Plateau and the Tibetan Plateau, the paper analyzes palaeocliamtic oscillations in Asian and African monsoon areas since 40 kaBP. The result indicates that lakes status records and loess-plaeosoil records showed regionally similar patterns of climate changes over the last 40 ka in Chinese monsoon areas and African monsoon area. These areas, at 40-24 kaBP and 12-4 kaBP respectively, corresponding with high insolation of precessional cycle at summer half year, experienced moist climate regime. In the Tibetan Plateau and its northern neighbor, Xinjiang area, at 40-24 kaBP, with highest lake level, the greatest lake area and several lakes groups came into being for lake water overfall between adjacent catchments over the last 40 ka, moister than 12-4 kaBP, which was called by many pioneer research workers of the Tibetan Plateau, the pan-lakes regime. However, in the Loess Plateau and African monsoon region, there occurred a converse evolution of climate change: it was wetter at 12-4.0 kaBP than 40-24 kaBP with the culmination of wetter condition appeared at 10-6.0 kaBP. 40-24 kaBP, a particular period for the Tibetan Plateau, for high insolation in summer over the Indian Ocean, the Indian monsoon was very strong and higher sea surface temperature occurred on the West Indian Ocean.

基于18个黄土/古土壤序列(黄土高原与青藏高原)与27个湖泊沉积序列(青藏高原、新疆、云南与赤道非洲及其以北的非洲季风区)对比分析了东亚季风区、印度季风区与非洲季风区40ka以来的区域环境演变特征。结果显示:上述区域在对应岁差周期的高太阳辐射阶段,也就是40~24kaBP与14~4kaBP分别经历了一次环境湿润期,而在末次冰期最盛期,除中国云南、青藏高原及新疆部分地区外,其他地区则较为干燥。青藏高原及其北侧的新疆区,40~24kaBP比14~4kaBP气候更为湿润,湖泊呈现40ka以来的最高最大湖面,高原进入一次泛湖期。而非洲区及黄土高原,则与此相反;14~4kaBP气候比40~24kaBP更为湿润、适宜,湖面更高,成壤作用更强。40~24kaBP,印度季风强盛,加强了对高原的水汽与潜热输送,同时,由于北方冰盖的存在,西风气流则相对南移,增加了对高原的影响,两种气流交互作用引起的强降水,可能是造成湖泊显著扩张的主要原因。

The global atmospheric heat sources are calculated by using the ECMWF reanalyzed data (hereafter referred to as ERA) and the NCEP/NCAR reanalyzed data (version 2, hereafter referred to as NCEP2) independently. Based on the comparisons of the atmospheric heat sources from ERA and those from NCEP 2, the annual oscillations of the sign of the vertically integrated heat source field 〈Q 1〉 are studied in this paper. It is showed that the variation of 〈Q 1〉 revealed by the ERA data in some regions where great differences...

The global atmospheric heat sources are calculated by using the ECMWF reanalyzed data (hereafter referred to as ERA) and the NCEP/NCAR reanalyzed data (version 2, hereafter referred to as NCEP2) independently. Based on the comparisons of the atmospheric heat sources from ERA and those from NCEP 2, the annual oscillations of the sign of the vertically integrated heat source field 〈Q 1〉 are studied in this paper. It is showed that the variation of 〈Q 1〉 revealed by the ERA data in some regions where great differences between the two data sets are observed seems to be more realistic than that revealed by the NCEP 2 data set. So we carry on our next analysis in this paper based on the results from the ERA data set. By analyzing the annual oscillation of the sign in the vertically integrated heat source field 〈Q 1〉, geographical distributions of the permanent atmospheric heat sources (sinks) are presented. The permanent heat sources are located over i) the western part of the equatorial Africa; ii) the ocean region on the west side of the Sumatra; iii) the equatorial Western Pacific and the equatorial Central Pacific. In addition, there is also a permanent heating center over the ocean region to the east of Japan. The permanent heat sinks are mainly located over the high latitude regions, and over the tropical ocean regions to the west of the continents.

首先 ,对比分析了ECMWF再分析资料 (简称ERA)和NCEP NCAR第 2版再分析资料 (简称NCEP2 )计算的大气热源 ,并在此基础上研究了全球大气热源性质 (符号 )变化的规律。分析两套资料计算的大气热源差别较大的某些地区 ,发现ERA资料在这些地区估算的大气热源要优于NCEP2 ,因此 ,在接下来的研究中主要采用了ERA资料。对全球大气热源性质 (符号 )变化规律的研究主要揭示了全球永久大气热源和永久大气热汇的地理分布特征。永久大气热源中心主要分布在赤道附近地区 ,在赤道非洲的西部、苏门答腊岛西边的海域和赤道中西太平洋地区各有一个较强的永久热源中心 ,另外 ,在日本南部及其东边的太平洋上也有一永久热源中心。永久热汇地区的分布比较有规律 ,除了南北半球 6 0度到两极之间为永久热汇地区外 ,南半球 5°S~ 4 0°S各大陆西边的大洋上都有一个永久热汇中心 ,另外 ,在阿拉伯海的北端 ,北半球 15°N~ 4 0°N之间太平洋和大西洋的东部也分别有一热汇中心。

 
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关equatorial africa的内容
在知识搜索中查有关equatorial africa的内容
在数字搜索中查有关equatorial africa的内容
在概念知识元中查有关equatorial africa的内容
在学术趋势中查有关equatorial africa的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社