扬子北缘志留系新滩组震积岩的发现及其地质意义

宁强县黄家坝一带下志留统新滩组上部发育了2层震积岩,其表现形式为震积岩中有微裂缝、微褶皱(液化砂岩卷曲构造)、半塑性角砾岩、碎块-液化均一层。为一个地震活跃期的2次地震事件,是区内首次发现,填补了区内震积岩的空白。该地震事件与板块的裂解有着直接的联系,是早古生代Rodinia超大陆再次发生大规模裂解引起地震活动的结果,是加里东构造运动的有力证据。     

北太平洋和北冰洋大气中多氯联苯的浓度与气固分配行为

Polychlorinated biphenyls(PCBs) were measured in atmospheric samples collected from the North Pacific to the Arctic Ocean between July and September 2012 to study the atmospheric concentration characteristics of PCBs and their gas/particle partitioning. The mean concentration of 26 ∑PCBs(vapor plus particulate phase)(∑PCBs) was 19.116 pg/m3 with a standard deviation of 13.833 pg/m3. Three most abundant congeners were CB-28,-52 and-77, accounting for 43.0% to ∑PCBs. The predominance of vapor PCBs(79.0% to ∑PCBs) in the atmosphere was observed. PCBs were negative correlated with the latitudes and inverse of the absolute temperature(1/T). The significant correlation for most congeners was also observed between the logarithm of gas/particle partition coefficient(log KP) and 1/T. Shallower slopes(from-0.15 to-0.46, average-0.27) were measured from the regression of the logarithm of sub-cooled liquid vapor pressures(logpo L) and log KP for all samples. The difference of the slopes and intercepts among samples was insignificant(p0.1), implying adsorption and/or absorption processes and the aerosol composition did not differ significantly among different samples. By comparing three models, the J-P adsorption model, the octanol/air partition coefficient(KOA) based model and the soot-air model, the gas/particle partitioning of PCBs in the Arctic atmosphere was simulated more precisely by the soot-air model, and the adsorption onto elemental carbon is more sensitive than the absorption into organic matters of aerosols, especially for lowchlorinated PCB congeners.     

闽台创意人才开发合作研究

加强闽台创意人才开发合作,既是创意经济背景下区域经济转型与发展的内在要求,也是提升两地创意产业竞争力的必要手段.基于SOWT方法,在分析闽台两地“五缘”文化和产业互补优势以及自身发展瓶颈的基础上,以海峡西岸经济区的建设以及台湾产业升级为历史契机,对闽台创意人才开发合作的可行性和必要性进行了研究.在此基础上,提出了以政府为主导、产业为载体、高校和科研机构为支撑的政产学研四位一体策略,从建立官方协调机制、优化人才生态环境、加强产业对接合作、创新人才引进政策、闽台高校互补合作等方面进行两地创意人才的开发合作.     

潮白河源区生态流量的谱系及其变化

为保护和恢复河流生态系统健康,本文通过河流不同流量形态的生态意义的分析,探讨了生态流量的内涵 及其谱系结构,将生态流量谱系划分为极低流量、低流量、高脉冲流量、高流量、极高流量五种流量形态。以潮白河 源区为研究区域,利用大阁水文站1956～2003 年48 年的实测日流量资料,对参照期(1956～1974 年)和影响期 (1975～2003 年)的生态流量谱系特征进行分析,结果表明,影响期较参照期多年平均极低流量、低流量、高流量分别 减少了31%、4%、9%,极高流量消失,高脉冲流量则增加了5%,若以参照期生态系统的状况为生态保护和恢复的目 标,就生态流量而言,潮白河源区须通过合理的水量调控应重点增加极低流量的大小。     

地学多源数据集成方法分析与应用

地学数据库是地调成果数据资料的汇总和集成,是地质调查信息化建设的重要体现.随着地学信息资源的不断积累,以应用为目的的多源数据信息的集成开发和利用将是推进国家地质工作不断前进的动力,能更好地为地调科研和社会大众服务.阐述了地学多源数据的产生,并对多源数据的集成方法进行了分析,介绍了通过GIS软件实现多源数据集成的技术基础和应用方法.     

乌鲁木齐大气降尘磁学特征及其环境意义

应用环境磁学方法研究了2012年乌鲁木齐大气降尘磁学特征,并与该地区2006年大气降尘样品磁学特征进行对比,探讨乌鲁木齐城市化进程中的大气降尘磁学特征变化规律。结果表明：乌鲁木齐大气降尘样品磁性矿物以粗颗粒的PSD和MD磁铁矿为主导,同时含有少量的不完全反铁磁性矿物如赤铁矿。与2006年相比,2012年降尘样品的颗粒较粗,且在取暖期内亚铁磁性矿物含量较少。乌鲁木齐冬季取暖整治措施成效显著,但非采暖期大气整体质量相对2006年有所下降,影响乌鲁木齐城市大气质量的主要因素已经由冬季供暖向城市化的加快和工业的发展这两个因素转移。     

使用震源机制解反演内蒙古东部地区构造应力场

使用内蒙古地震台网2008-01~2017-12记录的数字地震波形观测资料,采用基于P波初动和振幅比联合求解（FOCMEC）方法计算震源机制,获得内蒙古东部地区发生的138个ML≥2.5地震的震源机制解。对震源机制解特征进行分析显示,研究区地震震源类型以走滑型为主,兼有一定比例的逆冲型,而正断型相对较少,P轴和T轴走向的优势方向分别为NEE-SWW向和NNW-SSE向。将研究区划分为1°×1°的网格,采用阻尼区域应力反演（MSATSI）方法获得研究区的应力张量和应力场图像。应力场反演结果显示,内蒙古东部地区应力状态主要表现为走滑,局部区域存在剪切、挤压,最大主应力方向主要分布在NEE-SWW向,由北向南顺时针旋转。     

SENSITIVITY OF SEA SURFACE TEMPERATURE RETRIEVAL TO SEA SURFACE EMISSIVITY

To estimate sea surface temperature(SST)with high accuracy from radiometrie measure-ments,it is no longer acceptable to assume that sea surface emissivity is unity or any other con-stant.This note presents an investigation of the desirable emissivity accuracy in relation to re-trieval.It was found that 1% error in surface emissivity can cause up to 0.7 K error in the re-trieved SST,although this sensitivity is often reduced to about 0.5 K on average because of thedownward atmospheric radiation at surface partially compensates for the emissivity error.Since thedownward atmospheric radiation ratio is controlled to a large extent by the integrated water vaporin the atmosphere and,secondarily,by view angle,the sensitivity of SST retrieval to surface emis-sivity has been computed as a function of these two parameters.     

大型建筑物三维激光扫描的流程及精度分析

三维激光扫描技术能够提供扫描物体表面的三维点云数据,瞬时测得空间三维坐标值和相应的影像数据,根据获取的空间点云数据快速构建三维可视化模型,精度优良且输出格式多样,能满足不同应用的需求。以扫描大型建筑物为例,论述了三维激光扫描系统的主要构成和工作流程,误差产生的来源及相应的质量控制进行分析,获得满足技术设计要求的扫描数据,为信息数字化发展提供了必要的生存条件。