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arctic alaska
相关语句
  北极阿拉斯加
     CHEMICAL CHARACTERISTICS OF SUMMER PRECIPITATION AT POINT BARROW,ARCTIC ALASKA
     北极阿拉斯加巴罗地区夏季降水化学特征
短句来源
     Geochemical characteristics of rare earth elements (REE) and sedimentary features were studied in the borehole 96 7 1 from Elson Lagoon in Barrow, Arctic Alaska.
     研究了北极阿拉斯加巴罗 Elson泻湖 96- 7- 1沉积岩芯中稀土元素的地球化学及其沉积相特征 ,以重演区域气候、环境的变化并且与全球变化相比较。
短句来源
     FORAMINIFERA IN ELSON LAGOON AND ESTUARIES IN ARCTIC ALASKA
     北极阿拉斯加埃尔松潟湖及入湖河口的现代有孔虫
短句来源
     GEOCHEMISTRY OF RARE-EARTH ELEMENTS AND ITS SIGNIFICANCE IN THE STUDY OF CLIMATIC AND ENVIRONMENTAL CHANGE IN BARROW, ARCTIC ALASKA
     北极阿拉斯加巴罗Elson泻湖96-7-1岩芯中稀土元素的特征及其环境意义
短句来源
     Paleoenvironmental record in the AB 32 sediment core from Ikroavik Lake in Barrow,Arctic Alaska was studied with geochemical assemblages,leaching factors and paleotemperature indicators.
     应用地球化学元素、地球化学淋溶系数及环境温度指标,研究了北极阿拉斯加巴罗热融湖Ikroavik钻孔岩芯AB-32连续的高分辨环境记录。
短句来源
  阿拉斯加北端
     RECENT OSTRACODA AND ENVIRONMENT IN COASTAL ZONE, THE NORTHWEST ARCTIC ALASKA
     阿拉斯加北端海岸带的现代介形类与环境
短句来源
  “arctic alaska”译为未确定词的双语例句
     GEOCHEMICAL CHARACTERISTICS AND ITS CLIMATIC SIGNIFICANCE IN THE BORECORE AB 32 FROM IKROAVIK LAKE IN THE TUNDRA BARROW,ARCTIC ALASKA
     北极巴罗苔原区湖泊沉积的地球化学特征及其气候意义
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  arctic alaska
Sustainability, equity, and natural resource development in Northwest Siberia and Arctic Alaska
      
Peat leachmound treatment of residential wastewater in sub-Arctic Alaska
      
Thirty-one radionuclides were observed in concentrations that were 3 to 4 fold higher than those observed in arctic Alaska.
      
Vegetation type hierarchies and landform disturbance in arctic Alaska and alpine Colorado with emphasis on snowpatches
      
We investigated whether techniques developed to evaluate qualitative lake-level changes in the temperate zone can be used in sub-arctic and arctic Alaska.
      
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This paper deals with the features and distribution of chemical elements in the Borecore AB 67 (60 cm long, it covered a time span of past 450 a) from Elson Lagoon in Barrow,Arctic Alaska. The analysing data show that concentration of major elements,trace elements,rare and rare earth elements are quite different between the upper part (0 20 cm) and the lower part (20 60 cm). And the correlation between contents of clay and organic material and concentration of chemical elements are discussed. Based...

This paper deals with the features and distribution of chemical elements in the Borecore AB 67 (60 cm long, it covered a time span of past 450 a) from Elson Lagoon in Barrow,Arctic Alaska. The analysing data show that concentration of major elements,trace elements,rare and rare earth elements are quite different between the upper part (0 20 cm) and the lower part (20 60 cm). And the correlation between contents of clay and organic material and concentration of chemical elements are discussed. Based on the characters of sediment geochemistry of Borecore AB 67,the history of climatic and environmental changes in Barrow in the past 450 a can be reconstracted as follows: 1) Relatively cold and dry with low sea level stage occurred prior to 1740 A.D.; 2) It was becoming warm accompanied by transgression from 1740 A.D. to 1827 A.D.; 3) From 1827 A.D. to 1994 A.D.(0 20 cm),it was fluctuated warming accompanied by continuous transgression,in this period relatively cold appeared around 1935 A.D. and 1969 A.D..

LagoonsedimentsgeochemistryanditssignificanceinstudyofclimaticandenvironmentalchangesinBarrow,AlaskaYangWeili(杨惟理),ZhangQings...

Paleoenvironmental record in the AB 32 sediment core from Ikroavik Lake in Barrow,Arctic Alaska was studied with geochemical assemblages,leaching factors and paleotemperature indicators. According to the geochemical characteristics of the borecore AB 32 and 210 Pb dating,climatic and environmental changes in Barrow,Alaska reconstructed are as follows:1) from 1600 to 1735 AD,it was a period of cold and dry; 2) from 1735 to 1830 AD,it was becoming warm and moist; 3) around 1830 AD,it was...

Paleoenvironmental record in the AB 32 sediment core from Ikroavik Lake in Barrow,Arctic Alaska was studied with geochemical assemblages,leaching factors and paleotemperature indicators. According to the geochemical characteristics of the borecore AB 32 and 210 Pb dating,climatic and environmental changes in Barrow,Alaska reconstructed are as follows:1) from 1600 to 1735 AD,it was a period of cold and dry; 2) from 1735 to 1830 AD,it was becoming warm and moist; 3) around 1830 AD,it was obviously with a demarcation of geochemical significance;1830-1994 AD,it was continuous more warm and moist,but appeared cold period around 1969-1970 AD. The paleogeochemical characteristics in AB 32 borecore around 1830 AD are similar with those of modern environment in Ikroavik lake and response to climatic and environmental changes reflected in the borecore AB 67 from Elson lagoon.

应用地球化学元素、地球化学淋溶系数及环境温度指标,研究了北极阿拉斯加巴罗热融湖Ikroavik钻孔岩芯AB-32连续的高分辨环境记录。结合210Pb测年数据,指出巴罗地区气候、环境变化的历史状况是:1600~1735年为寒冷、干燥时期;1750~1830年,气候变暖、变湿;1830年出现明显的地球化学转折界限,1830~1994年,气候较湿润温暖。1969~1970年前后,巴罗地区有一变冷阶段。AB-32钻孔岩芯1830年左右表现的古地球化学特征与现代Ikroavik湖泊环境地球化学特征相吻合,并且和Elson泻湖AB-67沉积岩芯反映的气候环境变化基本一致。

Geochemical characteristics of rare earth elements (REE) and sedimentary features were studied in the borehole 96 7 1 from Elson Lagoon in Barrow, Arctic Alaska. The results showed that total contents of REE(∑REE) are lower, suggesting physical weathering dominates, therefore, concentrations of rare earth elements are lower in the paleosedimentary environment. The chondrite normalized distribution patterns of REEs are characterized by light REE(LREE) enrichment and Eu depletion with terrestrial sedimentary...

Geochemical characteristics of rare earth elements (REE) and sedimentary features were studied in the borehole 96 7 1 from Elson Lagoon in Barrow, Arctic Alaska. The results showed that total contents of REE(∑REE) are lower, suggesting physical weathering dominates, therefore, concentrations of rare earth elements are lower in the paleosedimentary environment. The chondrite normalized distribution patterns of REEs are characterized by light REE(LREE) enrichment and Eu depletion with terrestrial sedimentary rocks as the parent materials. In a comparison with the borecore AB-67 in Elson Lagoon, the main conclusion for climatic and environmental changes are similar: before 1740 AD, it was cold and dry with terrestrial properties, but comparatively warm around 1550 AD; after 1740 AD, it was fluctuatedly warm, and markedly warm after 1821 AD; a cold period appeared around 1890 AD; from 1904 to 1996 AD, it was continuously warm, but relatively cold around 1971 AD.

研究了北极阿拉斯加巴罗 Elson泻湖 96- 7- 1沉积岩芯中稀土元素的地球化学及其沉积相特征 ,以重演区域气候、环境的变化并且与全球变化相比较。结果表明 ,稀土元素总量 ∑ REE低 ,表现出北极地区以寒冻物理风化为主 ,沉积环境稀土元素含量偏低 ,其分布模式为轻稀土富集 ,Eu弱亏损 ,受沉积母岩影响显著 ,表现出亲大陆的地球化学特征。约 1 740年以前 ,陆相特征明显 ,气候干燥、寒冷 ,但是 ,1 5 5 0年左右有一暖期。1 740年后 ,出现海侵 ,巴罗气候变暖 ,1 82 1年后 ,变暖较明显 ,1 890年左右为低谷。1 90 4年持续变暖 ,1 971年左右 ,有一变冷阶段

 
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