DiNi12型数字水准仪在区域水准测量中的应用

对蔡司和天宝公司生产的DiNi12型补偿式自动安平数字水准仪进行野外试验,天津西部试验里程409.3km,施测131个测段,组成13个闭合环,每个闭合环均采用2台仪器测量数据.试验结果表明,在视距50 m以内情况下,精度仍能达到一等,作业速度可达5.4 km/d.两处跨断层综合观测场地测量,施测里程115.9 km,视...     

祁连山老虎沟12号冰川积累区消融期能量平衡特征

为研究冰川消融期积累区的能量平衡,利用2006年6月21日-7月31日祁连山老虎沟12号冰川海拔5040 m气象观测资料,分析了冰川的能量平衡各分量变化特征,估算了冰川表面的能量平衡组成.结果表明:冰川消融期,净辐射是冰川的主要热量来源(占82.1%),其次是感热通量(占17.9%);冰川消融耗热是主要的能量支出项(占...     

祁连山老虎沟12号冰川浅冰芯记录的气候环境信息

2006年6月在祁连山西段大雪山的老虎沟12号冰川钻取了一支20.12m的浅冰芯,对冰芯中化学组成成分的浓度变化特征和来源分析进行了研究.结果表明,冰芯中δ18 O和可溶性离子含量变化均显示了明显的周期性变化,δ18 O与祁连山西段温度有很好的正相关关系.通过相关分析和HYS-PLIT后向轨迹分析表明,老虎沟12号冰川...     

新疆地质矿产勘查回顾与展望

随着地勘投入的不断增加,"十一五",尤其是新疆"358"项目启动以来,新疆地质矿产勘查取得了有史以来最为突出的成果.煤炭、铁矿、钠硝石及重要有色金属矿产成果尤为突出,水文地质勘查取得了新成果,基础地质勘查程度大幅提高,科学研究及高新技术应用推动了找矿突破进程."十二五"是实现新疆"358"目标任务的关键时期,在"十一五"成果基础上,继续按"358"总体部署,强化重要成矿带及远景区的基础地质及调查评价工作,加强找矿突破关键问题的科技攻关及高新技术方法的应用,加大重要矿集区整装勘查力度,努力实现地质找矿新突破.     

勘察设计单位信息化建设“十一五”回眸与“十二五”展望

以信息化带动勘察设计行业现代化,是勘察设计行业始终不渝的追求。"十一五"期间在中国勘察设计协会的领导下,行业单位的信息化工作取得了显著成绩。笔者结合近年来本单位的信息化工作实践以及行业会议和调研等行业信息化工作经历,对勘察设计单位"十一五"期间的信息化建设情况进行总结,并对"十二五"的发展思路提出相关建议。     

硅酸盐矿物分解细菌Bacillus globisporus Q12与云母矿物相互作用的研究

土壤矿物与微生物相互作用对土壤中一系列生态过程产生重要影响。本文通过对培养液进行K、Si、Fe、Al等元素分析,测定了菌株生长与代谢产物,结合扫描电镜和透射电镜的观察,研究了钾矿物表生硅酸盐矿物分解细菌Bacillus globis-porusQ12菌株与云母矿物(黑云母和白云母)的相互作用规律。结果表明,不同的云母矿物对B.globisporusQ12菌株的生长与代谢有不同影响;与白云母相比,黑云母更适合B.globisporusQ12菌株的生长与酸性代谢产物(如有机酸等)的合成;供试菌株能促进黑云母和白云母矿物中K、Si、Fe、Al等元素的释放。扫描电镜、透射电镜观察与能谱分析发现,B.globisporusQ12菌株能在云母矿物表面定殖,加速云母矿物的风化;菌体自身也能吸附培养液中离子和矿物碎片而形成新的矿物。     

基于国际比较的中国原材料工业发展诊断

新世纪以来中国进入新一轮的重化工业加速发展期,原材料工业得以快速发展。“十二五”是中国从工业化中期向工业化后期转变的过渡时期,原材料工业将进入新的发展阶段。通过原材料工业发展的国际比较,发现中国原材料工业在规模、结构、布局、竞争力等方面存在的差距和面临的问题。随着工业化的阶段性转变,借鉴国际原材料工业的发展经验,结合新时期的新挑战,中国原材料工业将进入由规模扩张转向结构调整和升级以及注重增长方式发展的转变时期。     

Climatological features of the global tropical subsidence region based on satellite observations

Consisting of subtropical highs and tropical buffer zone, the global tropical subsidence region is the subsidence branches of Hadley cell, Walker circulation and monsoon circulation which are important com-ponents of the global general circulation. This region is closely connected with Asian monsoon. Based on long-term satellite observations of OLR (Outgoing Longwave Radiation) and HIRS-Tbl2 (the bright tem-perature from High-resolution Infra-red Radiation Sounder Channel 12 (6.7μm)), the climatological fea-tures over the global tropical subsidence region are studied in this paper and the main findings are as follows:1) Based on the physical meaning of satellite observed HIRS-12 and comparison with the satellite ob?served OLR and climatological maps of conventional observations of geopotential height and vertical veloc?ity at 500 hPa from NCEP / NCAR reanalysis data, it was found that HIRS-12 might be the best indicator of the global tropical subsidence region from the satellite observations.2) Using satellite observed HIRS-12, some new climatological features were revealed, especially those related with Asian monsoon.3) Comparing the climatological characteristics of tropical subsidence regions between both hemi-spheres, it was found that the circulation in the Northern Hemisphere is more complicated and much closely related with monsoon circulation than that in the Southern Hemisphere. Sudden decay of subsidence movement before monsoon onsets over the South China Sea revealed by HIRS-12 suggested that in the future study of Asian monsoon, it should be paid attention to not only the development of convection but also the variation of tropical subsidence region. It is very useful to monitor the convective and subsidence movements in the tropics by using OLR and HIRS-Tbl2 have been observed from satellite.