广西钦州板城晚泥盆世硅质岩地球化学特征及沉积环境探讨   总被引：8，自引：1，他引：8       下载免费PDF全文

邓希光  李献华  陈志刚 《地质科学》2003,38(4):460-469

广西钦州小董——板城地区发育较好的晚泥盆世至晚二叠世含放射虫硅质岩,剖面连续。本文对板城地区石梯水库晚泥盆世含放射虫硅质岩进行了主量元素、微量元素和稀土元素的分析,指示这些硅质岩形成于大陆边缘与深海盆地之间的过渡地带,说明在晚泥盆世钦州地区不存在大洋,与当时在华南板块与扬子板块之间发育古特提斯洋不符。  相似文献   

准噶尔盆地表层结构基本类型及特征   总被引：1，自引：0，他引：1  

赵峰  陈志刚  郑鸿明  杨晓海  王泉 《新疆地质》2004,22(2):191-195

地震勘探区内表层及近地表结构的地球物理特征，往往取决于相应的地质体结构的变化．研究不同表层及近地表地质体的地质特征和地球物理特征，对地震勘探中静校正方法的确定以及静校正量的求取至关重要．准噶尔盆地就其表层地质结构可分为山前冲积扇、戈壁、农田、沙漠等类型，不同类型的地质结构体具有各自独特的地球物理特征。  相似文献   

台站级气象观测数据流监控系统设计     

路永平  胡伟峰  陈志刚  陈振龙  黄宏智  雷卫延 《广东气象》2021,43(3):71-74

针对目前气象业务监控系统存在的种类繁多、质量参差不齐、利用率不高等问题,利用信息化和集约化的理论,基于通用业务软件系统,开展对主要气象观测数据站点信息、资料类型、观测时间、业务节点、采集时间、发送时间等台站级数据全流程传输监控信息提取方法的研究,后续将逐步扩展到所有类型的业务数据.通过梳理主要观测数据传输流程,设计监控...  相似文献   

提高多波束测量有效条幅覆盖宽度的方法研究     

朱鹏利  陈志刚  陈天福  孟强 《海洋技术学报》2009,28(4)

随着海洋科技的发展,声学技术在海洋仪器上的应用越来越广泛,多波束测深系统就是声学技术应用的一个范例.多波束测量中有效条幅的覆盖宽度对于调查船只和单位都有重要的意义.在调查中,应尽可能提高有效条幅覆盖宽度.通过多波束系统测深所应用的两大理论(波束形成理论、声纳方程)着手,详细分析了影响多波束测量有效条幅覆盖宽度的船速、海况、发射阵列等因素,提出了提高多波束测量有效条幅覆盖宽度的几点建议.  相似文献   

长三角城市群重心移动及其驱动因素研究   总被引：13，自引：2，他引：11  

陈志刚  王青  黄贤金  彭补拙 《地理科学》2007,27(4):457-462

长三角城市群在整个中国的区域发展战略中具有十分重要的地位,为深入把握这一地区发展的空间变化态势、更好地指导长三角地区的发展实际,在测算和分析1994～2004年间长三角城市群重心位置及其变化趋势的基础上,深入探讨了近些年长三角城市群重心移动的驱动因素。结果显示,1994年以来,长三角地区的城市群重心向西北方向移动了超过20 km,重心所在位置由苏州和嘉兴的交界处移至苏州市中心附近。而从其变化的趋势来看,未来的城市群重心仍将偏向西北方向,落到苏州和无锡的交界地带。这种态势的出现主要是由于长三角内部各城市受到其自然和区位条件、经济发展以及社会环境等诸多因素的影响,使得其发展呈现出一定的差异性,进而驱动了各城市不同程度的发展及其在整个长三角地区地位的转变,并最终致使城市群重心向自然区位条件优越、经济社会发展较快的西北方向移动。  相似文献   

Dynamic stress concentration and scattering of SH-wave by interface elliptic cylindrical cavity     

陈志刚  刘殿魁  杨在林 《地震工程与工程振动(英文版)》2003,2(2):299-306

In this paper, the dynamic stress concentration and scattering of SH-waves by bi-naterial structures that possess an interface elliptic cavity are investigated. First, by using the complex function method, the Green‘s function is constructed. This yields the solution of the displacement field for an elastic half space with a semi-elliptic canyon impacted by an anti-plane harmonic line source loading on the horizontal surface. Then, the problem is divided into an upper and lower half space along the horizontal interface, regarded as a harmony model. In order to satisfythe integral continuity condition,the unknown anti-plane forces are applied to the interface. The integral equations with unknown forces can be established through the continuity condition, and after transformation, the algebraic equations are solved numerically. Finally, the distribution of the dynamic stress concentration factor (DSCF) around the elliptic cavity is given and the effect of different parameters on DSCF is discussed.  相似文献   

福建省兴化湾、九龙江河口和东山湾潮间带沉积物岩心碘研究     

纪丽红  刘广山  李超  陈志刚  黄奕普 《海洋学报》2013,35(5):177-183

用碱熔法处理样品,水沥取,用分光光度法测量了采集自福建省兴化湾、九龙江河口和东山湾3个海湾潮间带沉积物岩心的碘分布。兴化湾、九龙江河口和东山湾3岩心中的碘含量分别为2.5~43.7,17.3~39.6和11.3~29.1 mg/kg。3个沉积物岩心中的碘含量稍高于福建省的土壤的碘含量,与我国海域的沉积物碘含量在同一水平,但明显低于文献报道的开阔海域沉积物的碘含量。兴化湾和东山湾沉积物中的碘与有机碳含量有较好的相关性;在九龙江河口采集的岩心中的碘与有机物碳含量的相关性较差。推测海洋源的沉积物碘与有机碳含量相关性较好,而陆源沉积物的碘与有机碳含量相关性较差。  相似文献   

浅析新型城镇化的土地支撑     

伍美茹  陈志刚 《国土资源情报》2014,(11):37-40

新型城镇化要以人为本,是推进以人为核心的城镇化,提高城镇人口素质和居民生活质量,要把促进有能力在城镇稳定就业和生活的常住人口有序实现市民化作为首要任务。新型城镇化需要土地支撑,要解决人地失调的突出问题,要把实现人地和谐作为主要目标,坚持耕地保护与节约集约用地的基本国策,发挥规划的龙头作用和计划的管控作用,有序推进土地制度改革。  相似文献   

浅谈地矿行政干部良好形象的树立     

陈志刚 《湖南地质》1997,16(4):271-272

浅谈地矿行政干部良好形象的树立ＯｎＳｅｔｉｎｇａＧｏｏｄＩｍａｇｅｏｆｔｈｅＡｄｍｉｎｉｓｔｒａｔｉｖｅＣａｄｒｅｓｏｆＧｅｏｌｏｇｙａｎｄＭｉｎｅｒａｌＲｅｓｏｕｒｃｅｓ陈志刚ＣｈｅｎＺｈｉｇａｎｇ湖南省怀化地区地质矿产局怀化４１８０００Ｈｕａｉｈ...  相似文献   

中国不同区域能源消费碳足迹的时空变化(英文)   总被引：4，自引：2，他引：2  

揣小伟  赖力  黄贤金  赵荣钦  王婉晶  陈志刚 《地理学报(英文版)》2012,22(1):110-124

Study on regional carbon emission is one of the hot topics under the background of global climate change and low-carbon economic development, and also help to establish different low-carbon strategies for different regions. On the basis of energy consumption and land use data of different regions in China from 1999 to 2008, this paper established carbon emission and carbon footprint models based on total energy consumption, and calculated the amount of carbon emissions and carbon footprint in different regions of China from 1999 to 2008. The author also analyzed carbon emission density and per unit area carbon footprint for each region. Finally, advices for decreasing carbon footprint were put forward. The main conclusions are as follows: (1) Carbon emissions from total energy consumption increased 129% from 1999 to 2008 in China, but its spatial distribution pattern among different regions just slightly changed, the sorting of carbon emission amount was: Eastern China > Northern China > Central and Southern China > Southwest China > Northwest China. (2) The sorting of carbon emission density was: Eastern China > Northeast China > Central and Southern China > Northern China > Southwest China > Northwest China from 1999 to 2003, but from 2004 Central and Southern China began to have higher carbon emission density than Northeast China, the order of other regions did not change. (3) Carbon footprint increased significantly since the rapid increasing of carbon emissions and less increasing area of pro-ductive land in different regions of China from 1999 to 2008. Northern China had the largest carbon footprint, and Northwest China, Eastern China, Northern China, Central and Southern China followed in turn, while Southwest China presented the lowest area of carbon footprint and the highest percentage of carbon absorption. (4) Mainly influenced by regional land area, Northern China presented the highest per unit area carbon footprint and followed by Eastern China, and Northeast China; Central and Southern China, and Northwest China had a similar medium per unit area carbon footprint; Southwest China always had the lowest per unit area carbon footprint. (5) China faced great ecological pressure brought by carbon emission. Some measures should be taken both from reducing carbon emission and increasing carbon absorption.  相似文献