海洋资源价值货币化及对经济发展支撑作用研究——以辽东湾、渤海湾、莱州湾为例     

方春洪  吴姗姗  齐连明  刘容子  汪迪 《海洋技术学报》2013,(1):87-89,96

以辽东湾、渤海湾、莱州湾为例,运用资源价值论方法对海洋资源价值进行实物货币化,建立海洋资源新价值观;对三大海湾2001—2008年海洋资源及其资源产量结构分别与海洋经济、地区经济进行趋同性分析,探讨海湾间各自发展的海洋资源对海洋经济增长和地区经济发展的支撑作用,揭示海湾地区间海洋经济和地区经济发展的演变特征。  相似文献   

An observation made in 1602 of an aurora in North America     

Salvador Galindo  Diego Galindo 《Journal of Atmospheric and Solar》2009,71(12):1222-1224

The earliest known record of an aurora sighting in North America was made by Jesuit missionaries in New Brunswick, Canada, in the year 1611. Here, we wish to report an earlier record made in 1602 by the Notary Public of the Spanish Manila Galleon “San Antonio de Padua” while sailing near the coast of California. We also include a brief account of the circumstances and peculiar concurrence of events leading to the 1602 sighting.  相似文献   

A comparison of seismic risk maps for Italy   总被引：5，自引：3，他引：2  

Helen Crowley  Miriam Colombi  Barbara Borzi  Marta Faravelli  Mauro Onida  Manuel Lopez  Diego Polli  Fabrizio Meroni  Rui Pinho 《Bulletin of Earthquake Engineering》2009,7(1):149-180

National seismic risk maps are an important risk mitigation tool as they can be used for the prioritization of regions within a country where retrofitting of the building stock or other risk mitigation measures should take place. The production of a seismic risk map involves the convolution of seismic hazard data, vulnerability predictions for the building stock and exposure data. The seismic risk maps produced in Italy over the past 10 years are compared in this paper with recent proposals for seismic risk maps based on state-of-the-art seismic hazard data and mechanics-based vulnerability assessment procedures. The aim of the paper is to open the discussion for the way in which future seismic risk maps could be produced, making use of the most up-to-date information in the fields of seismic hazard evaluation and vulnerability assessment.  相似文献   

Stable carbon isotope evidence for tracing the diet of the host Hepialus larva of Cordyceps sinensis in the Tibetan Plateau     

CHEN Di  YUAN JianPing    XU ShiPing  ZHOU XiaoGang  ZHANG Yan  XU XiaoMing  ZOU ZhiWen  ZHANG GuRen & WANG JiangHai  State Key Laboratory of Bio-control  College of Life Sciences  Sun Yat-Sen University  Guangzhou  China  School of Marine Sciences  Guangzhou  State Key Laboratory of Organic Geochemistry  Guangzhou Institute of Geochemistry  Chinese Academy of Sciences  Guangzhou  R & D Center  Guangzhou Enenta Electrical Equipment Co.  Ltd  Guangzhou ... 《中国科学D辑(英文版)》2009,(5)

Two types of Hepialus larvae with different diets were distinguished in the Sejila Mountain,Tibetan Plateau based on the stable carbon isotope data of the host Hepialus larva of Cordyceps sinensis and its closely adjacent tender plant roots and humus fractions.Type I is the larva chiefly fed by soil humus,and characterized by the δ 13C values of -22.6‰ to-23.4‰,and more than -23.4‰ in its heads.Type II is the larva chiefly fed by tender plant roots,and characterized by the δ 13C values of-24.6‰ to -27.6‰,an...  相似文献   

南海岩石圈破裂方式与扩张过程的三维物理模拟   总被引：7，自引：2，他引：5  

孙珍  孙龙涛  周蒂  蔡东升  李绪深  钟志洪  姜建群  樊浩 《地球科学》2009,34(3):435-447

南海的形成演化一直是国内外关注的热点之一.为了揭示南海的构造演化过程, 分析对比了3组物理模拟实验.实验结果表明, 断裂样式和裂谷带的走向与岩石圈的初始热流变结构密切相关.对比模拟结果与陆缘的断层样式, 推测在张裂初期, 陆坡区比陆架区具有相对热减薄的岩石圈, 从而导致不同构造位置上发育不同的裂陷特征.受下地壳和软流圈韧性流动的影响, 断层越是靠近扩张区, 倾角变得越平缓.实验揭示, 破裂首先以点状出现, 这些点不断扩大并互相连接形成连续的扩张区.共轭边缘常具有对称的形状, 向海盆方向对凹或者对凸.当离散边界附近有刚性块体时, 扩张区域的边界会明显受到地块边缘形态的影响.通过模拟实验, 推测破裂过程可能以较粘性的方式进行.西北次海盆的发育可能是沿着中-西沙地块北缘深裂陷槽破裂的结果.   相似文献   

美国著名地震学家和地球物理学家Paul Silver     

狄传芝 《国际地震动态》2009,(8):43-44

2009年8月7日,著名地震学家和地球物理学家Paul Silver驾车接在佛罗里达州实习的女儿Celine回程的路上,在北卡罗来纳州发生车祸,Paul Silver和Celine不幸双双逝世。  相似文献   

Integrated geophysical methods for the characterisation of an archaeological site (Massenzio Basilica — Roman forum, Rome, Italy)     

Ettore Cardarelli  Gerardina Di Filippo   《Journal of Applied Geophysics》2009,68(4):508-521

A geophysical study that involved different techniques was carried out with the aim to improve the knowledge of the archaeological site where the Basilica of Maxentius was founded and to discern individual covered structures (foundations).Vertical Electrical Sounding (VES), seismic refraction and Electrical Resistivity Tomography (ERT) studies were performed in the archaeological site. VES and seismic refraction allowed to characterise the main geological formations of the hill where the Basilica was built and to distinguish the concrete floor and backfilling. Electrical data were processed using different algorithms; their results were compared to appraise the inverted models' robustness.ERT inversion algorithms were used to delineate shape and size of a much more complex structure, that were originally expected from archaeological excavation plan. The results of the commercial program were used as a posteriori information to include them in the algorithm proposed by the authors; the sequential use of the programs defined a processing procedure.The integrated use of different geophysical techniques reduced a great deal the intrinsic ambiguities of each method. Direct explorations (boreholes and archaeological excavations) confirmed the geophysical results.  相似文献   

Petrology of lavas from the 2004–2005 flank eruption of Mt. Etna,Italy: inferences on the dynamics of magma in the shallow plumbing system     

Rosa Anna Corsaro  Lucia Civetta  Valeria Di Renzo  Lucia Miraglia 《Bulletin of Volcanology》2009,71(7):781-793

Following the 2001 and 2002–2003 flank eruptions, activity resumed at Mt. Etna on 7 September 2004 and lasted for about 6 months. This paper presents new petrographic, major and trace element, and Sr–Nd isotope data from sequential samples collected during the entire 2004–2005 eruption. The progressive change of lava composition allowed defining three phases that correspond to different processes controlling magma dynamics inside the central volcano conduits. The compositional variability of products erupted up to 24 September is well reproduced by a fractional crystallization model that involves magma already stored at shallow depth since the 2002–2003 eruption. The progressive mixing of this magma with a distinct new one rising within the central conduits is clearly revealed by the composition of the products erupted from 24 September to 15 October. After 15 October, the contribution from the new magma gradually becomes predominant, and the efficiency of the mixing process ensures the emission of homogeneous products up to the end of the eruption. Our results give insights into the complex conditions of magma storage and evolution in the shallow plumbing system of Mt. Etna during a flank eruption. Furthermore, they confirm that the 2004–2005 activity at Etna was triggered by regional movements of the eastern flank of the volcano. They caused the opening of a complex fracture zone extending ESE which drained a magma stored at shallow depth since the 2002–2003 eruption. This process favored the ascent of a different magma in the central conduits, which began to be erupted on 24 September without any significant change in eruptive style, deformation, and seismicity until the end of eruption.  相似文献   

含不同随机缺陷数目岩样的破坏过程、前兆及全部变形特征          下载免费PDF全文

王学滨  吴迪  赵福成  潘一山 《地球物理学进展》2009,24(5):1874-1881

利用拉格朗日元法模拟了平面应变单轴压缩条件下具有初始随机材料缺陷的岩石试样的破坏过程、前兆和宏观力学响应.利用若干FISH函数于岩样内部规定初始缺陷并计算全部变形特征.比密实岩石弱的缺陷在破坏之后经历理想塑性行为.密实岩石在破坏之后先是经历线性应变软化行为,然后是理想塑性行为.随着缺陷数目的增加,剪切带间距缩小;岩样的强度下降.在应变软化阶段,最大不平衡力的明显的突增是由于被剪切带切割的试样块体发生了沿剪切带方向的运动.试样内部的缺陷数目越少,应变软化阶段最大不平衡力的峰值越高.无论从单元破坏角度,还是从侧向应变-轴向应变曲线、体积应变-轴向应变曲线、计算得到的泊松比-轴向应变曲线角度,都得到了相同的结论（即,缺陷越多,破坏前兆越明显）.采用两条倾斜的扫描线对岩样最终的破坏形态进行了扫描,发现当扫描线间距等于半个至1个单元长度时,初始随机缺陷位置与岩样最终破坏形态具有很好的相关性.  相似文献   

中年男性用力肺活量正常参考值的地理分布规律   总被引：1，自引：0，他引：1  

葛淼  闫燕春  王欣  马文艺  万佳  张莎莎  吴笛 《地理研究》2009,28(5):1227-1234

为制定中国中年男性用力肺活量正常参考值的统一标准提供科学依据,收集了国内189个单位测定的16461例中年男性用力肺活量正常参考值,应用SPSS统计软件,运用相关分析和回归分析的方法,研究了其与8项地理因素指标的关系。结果发现期间存在很显著的相关关系;用逐步回归分析的方法推导出回归方程,如果知道某地的地理因素,就可以用回归方程计算该地区的中年男性用力肺活量正常参考值。依据中年男性用力肺活量正常参考值与地理因素的依赖关系,把中国分为8个区。  相似文献