Morphology and internal architecture of a banner bank off Chengshan Headland, Shandong Peninsula

A banner bank off the north coast of the Chengshan Headland, Shandong Peninsula, has been described on the basis of echo sounder bathymetry, side-scan sonar and high-resolution seismic data sets. The bank is in NWW direction, approximately parallel to the coastline. The bank consists of sandy silt or clayed silt. Sand waves and megaripples are observed on the north side, which result from strong tidal currents around the headland and storm waves in winter. These bed forms indicate that the bank is influenced by the modern hydrodynamics. The bank is separated from the coast and Holocene subaqueous clinoform around the Shandong Peninsula in its east part. High-resolution seismic profiles reveal that the bank was formed during two periods： the earlier seismic unit Ua, and later seismic units Ub and Uc which overlays Ua with erosional surfaces on its south side and north side, respectively. As comparing with the clinoform, the bank has a different internal architecture. In the west of the bank, however, topography and surface sediment characteristics suggest that the bank links to the clinoform. The authors propose that seismic Ua is a residual part of early clinoform deposit. After the sediments in the north and south of Ua were eroded by strong currents, the Ub and Uc started to deposit probably by a complex hydrodynamic process. These results provide new insights into the evolution of the bank and its relation with the Holocene subqueous clinoform.

Genesis of reservoir heterogeneity and its impacts on petroleum exploitation in beach-bar sandstone reservoirs:A case study from the Bohai Bay Basin,China

Reservoir characteristics of beach-bar sandstone reservoirs in the 2nd member of the Shahejie Formation in Banqiao Sag are studied by means of well logging interpretation,thin section observation and physical property analysis.Further,the influence of deposition,diagenesis and internal architecture interface on reservoir quality are quantitatively analyzed.On this basis,the geneses of reservoir heterogeneity of beach-bar sandstone reservoirs are summarized.The following results are obtained.(1)Primary pores,secondary pores and micro-fractures are the main types of reservoir space in the study area,and the primary intergranular pore is the main pore type;the microscopic heterogeneity of reservoirs is strong,and the physical properties of beach-bar reservoirs in different regions vary widely.(2)Tectonicdeposition,diagenesis and reservoir internal architecture work in unison to cause the heterogeneity of beach-bar reservoir quality in the 2^(nd) member of the Shahejie Formation in Banqiao Sag;the locations and scales of beach-bar sand bodies are obviously different in different fault blocks in the study area,determining the macroscopic distribution of beach-bar reservoirs;differential diagenesis intensifies the degree of reservoir heterogeneity;the fine-grained argillaceous deposits between different architecture units of beach-bar reservoirs are critical to the quality of reservoirs.(3)The differential distribution of beach-bar reservoir quality parameters in the study area affects the spatial heterogeneity of reservoirs,which not only controls the original oil/gas distribution,but also has a significant influence on the effect of waterflooding and leads to the local enrichment of remaining oil.

Enhanced Special Drawing Rights＂ How China Could Contribute to a Reformed International Monetary Architecture

Since the end of the Bretton Woods era, the world has operatea on a ae jacto system of free-floating exchange rates, with the US dollar as the dominant international currency. The system, characterized by large pro-cyclical capital flows and chronic imbalances, is inherently unstable, and has contributed to repeated crises, recessions and geopolitical tensions. One potentially ＂least-difficult＂ line of reform would be to allow the evolution of a multi-currency system, underpinned by an expanded role for Special Drawing Rights （SDRs）. Attempts to promote wider use of the SDR have foundered on the liquidity premium. However, for Chinese corporations and institutions, at present restricted in their capital account activities, the SDR liquidity premium would appear less daunting, The Chinese authorities eould provide policy encouragement for the use of SDRs by their institutions. This initiative, supported by China＇s Special Administrative Region Hong Kong, would kick-start an international SDR ecosystem, and encourage even broader use of SDRs, to the benefit of international monetary stability.

2016' International Summer School on Naval Architecture, Ocean Engineering and Mechanics

I. Overview Naval Architecture and Ocean Engineering covers a wide range of knowledge, and lays equal stress on both theory and practices. New concepts, new technologies and new methods on naval architecture and ocean engineering are continuously emerging. Since 2009, the international summer school on Naval Architecture, Ocean Engineering and Mechanics have provided a valuable learning and communication opportunity for the students to expand their fields of vision, and have comprehensive understanding of the naval architecture and ocean engineering, have already become a well-known brand in the field of Naval Architecture,

国际建筑遗产保护研究进展——基于《International Journal of Architectural Heritage》2014—2018年文章的定量分析

为深入了解国际建筑遗产保护研究现状,以该领域唯一一本Web of Science核心数据库收录期刊《International Journal of Architectural Heritage》为研究对象,结合文献计量学方法,针对该刊2014-2018年间刊载的342篇文章的来源地、第一作者所属机构、关键词和文章内容进行统计分析,并从建筑遗产的结构性能、测绘勘察、材料分析等方面,归纳提炼研究主题,与国内研究现状进行横向对比。分析表明,国际建筑遗产科技领域当前研究结构以结构性能为主,以材料表征、测绘勘察、环境科学等为辅的多主题交融互动,研究对象的选择偏倚,研究方法的多元交叉验证倾向等特征,国内研究在定量分析、学科交叉、研究内容深度和广度的拓展方面尚存在发展空间。