阿拉斯加东南部Juneau金矿带中流体循环,岩脉形成,区域变形和深成作…     

Mill.  LD 汤爱平 《世界地质》1995,14(1):68-71

Ｊｕｎｅａｕ金矿带中含金石英脉系形成于阿拉斯加海岸山脉的西部边缘，长１６０ｋｍ，宽５－８ｋｍ的地带，脉系与地形边界上中白垩纪逆断层附近的剪切带在空间上有成因联系。岩脉方向和剪应力大小，分布方向说明了最大主应力轴呈北东－南西走向，且近水平分布，而最小主应力轴近垂直分布，这种局部的应力排列方式与远的始新世的板块排列方式相一致，岩脉形成的同位素年龄说明了流体循环发生在５２．８－５６．５Ｍａ，这与早始新世  相似文献   

雷电电磁辐射的危害及安全对策     

陆斌 《气象研究与应用》2006,27(3):58-60

分析雷电电磁脉冲的起电机制、传播途径及其对电子设备的危害,提出对雷电电磁脉冲的防护措施。  相似文献   

Tracing of dissolved organic matter from the Sepetiba Bay (Brazil) by PARAFAC analysis of total luminescence matrices   总被引：2，自引：0，他引：2  

Luciani X  Mounier S  Paraquetti HH  Redon R  Lucas Y  Bois A  Lacerda LD  Raynaud M  Ripert M 《Marine environmental research》2008,65(2):148-157

Fluorescent excitation-emission matrices (FEEM) of the fluorescent dissolved organic matter (FDOM) are widely used for DOM characterization and tracing. In this work, a set of FEEM from sampling campaigns in the Sepetiba Bay (Brazil) was decomposed into independent components using the parallel factor analysis (PARAFAC) algorithm. Four independent components were extracted describing the total fluorescence of the FDOM. The well described peaks A, C, M, B and T were found, and a new peak, A', linked to the C peak, was detected. Relative contribution of each of four components to the total fluorescence confirms that the coastal water has DOM of terrestrial origin, except for the 275Ex/400-500Em range (nm), which primarily occurs in marine waters.  相似文献   

Copper emission factors from intensive shrimp aquaculture     

Lacerda LD  Santos JA  Madrid RM 《Marine pollution bulletin》2006,52(12):1823-1826

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Three decades of Cd and Zn contamination in Sepetiba Bay, SE Brazil: Evidence from the mangrove oyster Crassostraea rhizophorae     

Lacerda LD  Molisani MM 《Marine pollution bulletin》2006,52(8):974-977

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1992-2006年河南省酸雨分布特征分析     

杜子璇  刘荣花  熊杰伟  邓伟  田宏伟  陆斌 《河南气象》2009,(1):55-58

利用南阳、商丘和郑州3个观测站1992-2006年酸雨观测数据进行统计,分析其15 a来年际、季节变化特征。结果表明：1992-1995年间,3站酸雨发生频率、降水年均pH值和酸雨雨量与全年雨量比值均呈现减弱趋势,1998-2006年间均出现加强趋势,且在期末明显变强;酸雨频率1、9和12月出现高值,pH值在9-12月份出现低值;1992-2000年由南到北酸雨区域逐渐变小,2000年后由南到北、由西到东酸雨区域迅速扩大。  相似文献   

Foreword: pathogens and fecal indicators in groundwater   总被引：3，自引：0，他引：3  

McKay LD 《Ground water》2011,49(1):1-3

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咸阳地热WH1井砂岩地层回灌试验研究与应用          下载免费PDF全文

徐胜强  陆斌  崔世波  薛亚斐  段凯  周林波 《探矿工程》2014,41(7):5-8

地热是一种新型绿色能源,我国地热资源丰富,部分区域地热开发已经形成一定规模,具有一定的研究基础,地热尾水回灌形成可持续循环利用技术是目前遇到的突出难题,在砂岩地层回灌尤为困难。汾渭盆地的地热能源较为丰富,已经形成了规模开发,咸阳地热WH1井首次进行了砂岩回灌尝试,获得了施工及回灌等相关数据。对砂岩地层尾水回灌进行了试验,积累了施工经验,为后继施工打下了基础。  相似文献   

土壤水在绿化垃级场区运移的模拟——对液一汽水运移有限元模型的发展     

Conn.  LD 张光辉 《国外地质与勘测》1994,(3):54-61

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Understanding ship-grounding impacts on a coral reef: potential effects of anti-foulant paint contamination on coral recruitment     

Negri AP  Smith LD  Webster NS  Heyward AJ 《Marine pollution bulletin》2002,44(2):111-117

The 184 m cargo ship Bunga Teratai Satu collided with Sudbury Reef, part of the Great Barrier Reef and remained grounded for 12 days. The ship was re-floated only 3 days prior to the November 2000 mass coral spawning. No cargo or fuel was lost but the impact resulted in significant contamination of the reef with anti-foulant paint containing tributyltin (TBT), copper (Cu) and zinc (Zn). Larvae of the reef-building scleractinian coral Acropora microphthalma were exposed to various concentrations of sediment collected from the grounding site in replicated laboratory experiments. Two experiments were performed, both of which used varying ratios of contaminated and control site sediment in seawater as treatments. In the first experiment, the influence of contaminated sediment on larval competency was examined using metamorphosis bioassays. In the second, the effect of contaminated sediment upon larval recruitment on pre-conditioned terracotta tiles was assessed. In both experiments, sediment containing 8.0 mg kg(-1) TBT, 72 mg kg(-1) Cu and 92 mg kg(-1) Zn significantly inhibited larval settlement and metamorphosis. At this level of contamination larvae survived but contracted to a spherical shape and swimming and searching behaviour ceased. At higher contamination levels, 100% mortality was recorded. These results indicate that the contamination of sediment by anti-fouling paint at Sudbury Reef has the potential to significantly reduce coral recruitment in the immediate vicinity of the site and that this contamination may threaten the recovery of the resident coral community unless the paint is removed.  相似文献