用相关分析法从红外云图上提取云团平均尺度特征量

用相关分析法从红外云图上提取云团平均尺度这一特征量，考察了云团平均尺度与合地面观测资料所估算的云厚以及实测局地降雨之关系。初步分析表明，所得的云团平均尺度具有明显的天气学意义。     

气象业务系统融入“天擎”“天镜”的技术要点分析

随着气象业务系统的集约化程度越来越高,“云”+“端”的业务构建模式将成为主流,省级气象部门新的业务系统构建直接基于“天擎”作为数据和算力支撑,“天镜”提供统一实时业务监控的模式开展。而原来研发的气象业务系统则要通过“云化”改造融入“天擎”“天镜”。本文通过分析融入“天擎”“天镜”技术要点,总结贵州前期系统融入过程中的经验,为今后各单位业务系统顺利融入提供借鉴和指导。     

从第二次土地调查看上海市地籍管理

本文分析了上海市第二次土地调查中地籍调查的技术方法,结合上海市地籍管理现状,根据实际工作需要,提出改进和完善地籍管理的几点思考。     

Surficial Sedimentary Diatoms in Okinawa Trough and Its Response to Kuroshio Current

This paper describes the relative contents of dominant diatom species and the distributive characteristics of tropical pelagic species and diatom assemblages, and also discusses the relations between the relative content of tropical pelagic species and Kuroshio Current and between the distribution of diatom assemblages and material sources. The results show that the limit of＞20% relative content of tropical pelagic species is basically consistent with the demarcation of Kuroshio Current, and that the distributions of dominant diatom species and diatom assemblages reserve the records of their closer relations to material sources.     

钢-混凝土组合剪力墙抗震性能研究简述

钢-混凝土组合剪力墙可以充分发挥钢和混凝土2种材料的优势,改善传统钢筋混凝土剪力墙延性和耗能能力较差的缺点,在钢-混凝土混合结构中具有应用优势。本文简要介绍了国内外一些新型的钢-混凝土组合剪力墙,并简述了其抗震性能的研究现状,最后对一些关键问题进行了初步探讨。     

Comparison of ground motions from the 2010 Mw 7.2 El Mayor–Cucapah earthquake with the next generation attenuation ground motion prediction equations

A total of 144 free-field ground motions with closest site-to-rupture distances (R_rup) less than 200 km recorded during the 2010 M_w 7.2 El Mayor–Cucapah earthquake are used to investigate predictive capabilities of the next generation attenuation (NGA) ground-motion prediction equations (GMPE). The NGA GMPEs underpredict observed spectral accelerations at sites with shear wave velocity in the upper 30 m of the site (V_s30) between 180 and 366 m/s with R_rup from about 10 to 50 km and overpredict at sites with R_rup from about 50 to 200 km. Intra-event residuals of the NGA GMPEs exhibit a noticeable negative trend for peak ground acceleration and 0.3, 1.0, and 2.0 s periods. Comparison of the inter-event residual between the 2010 M_w 7.2 El Mayor–Cucapah earthquake and the NGA dataset reveals that short-period inter-event residuals from the 2010 M_w 7.2 El Mayor–Cucapah earthquake is within the scatter of inter-event residuals from the NGA dataset but long-period inter-event residuals do not appear within of the scatter of inter-event residuals from the NGA dataset. Spectral accelerations predicted by the NGA GMPEs are generally unbiased against V_s30 and periods of less than 4.0 s. Observed spectral accelerations show a stronger V_s30 dependence for both short and long periods compared with the NGA GMPEs. The Boore and Atkinson (Earthq Spectra 24(1):99–138, 2008) and Chiou and Youngs (Earthq Spectra 24(1):173–215, 2008) GMPEs perform better in predicting observed short-period spectral accelerations at the sites with V_s30 between 180 and 250 m/s than the Abrahamson and Silva (Earthq Spectra 24(1):67–97, 2008) and Campbell and Bozorgnia (Earthq Spectra 24(1):139–171, 2008) GMPEs.     

福建仙游震群重定位及序列特征分析

使用福建东南沿海地壳速度结构模型,利用双差定位方法(hypodd),对2010年8月—2013年12月福建仙游地区震群序列进行重新定位,讨论仙游震群序列的变化特征。定位结果显示,仙游震群序列主要围绕金钟水库蓄水区周缘活动,震源位置和深度表现出一定时空阶段性分布特征,并具有一定水库地震性质。     

中坝隧道地下分水岭演化的数值模拟分析

由于铁路隧道的施工,地下水进入隧道,形成了新的排泄基准面,对区域地下水环境产生较大影响,故对该类问题进行深入研究具有重要的工程实践意义。以中坝岩溶隧道为例,采用Visual modflow对中坝隧道进行三维数值模拟,模拟中坝隧道开挖建设后,地下分水岭的演化过程,以此来探讨分析其对地下水环境的影响。     

微量元素在湖积物、土壤的垂向分布与稻谷中的分配

报道了“江苏省国土生态地球化学调查”项目有关湖积物、土壤柱微量元素垂向分布及稻谷样元素分配研究的初步成果。通过对有关样品元素含量的分析对比,指出洪泽湖沉积柱元素垂向分布与其动荡的沉积环境关系密切、太湖局部沉积物在其目前20cm以上深度存在人为重金属污染,这二湖沉积物中其氮与总有机碳含量呈显著正相关;认为城市化可使当地土壤环境受重金属等污染的深度显著加大、城市土壤环境受人为活动的影响要显著高于农村;发现Mo易富集于稻米、重金属与营养元素易富集于稻皮、各元素在米-谷间的分配关系不确定。