检索结果-南通市图书馆

Science China Earth Sciences 2002年第3期45卷 250-258页

作者：林畅松肖建新刘景彦陈建强张燕梅纪云龙 Department of Energy Geology China University of Geosciences Beijing 100083 China

The Tertiary Kuqa depression is a foreland basin generated by flexural subsidence resulting from the southward thrusting of the southern Tianshan Mountains. Tertiary basin fills of the depression can be classified into four tectonic sequences bounded by gentle angular unconformities. The sequences are composed of two parts, the lower transgressive and the upper progradational successions, which are separated by a regional maximum transgressive surface. The development of these sequences is attributed to the foreland tectonic process from flexural subsidence caused by thrust loading to rebounded uplift due to the erosion and stress release. The generation of the angular unconformities defining the tectonic sequences has been interpreted as the result of the rebounded uplift and the following thrusting. It has been found that there is a significant difference in depositional pattern between the northeastern and the northwestern margins. The relatively strong thrusting and mountain building occurring along the northwestern margin resulted in the development of thick-bedded alluvial fan and angular unconformities. The northeastern margin, in contract, lacks thick alluvial fan accumulation due to weak thrusting. This difference is likely related to the pre-existing east-west partition of the basin basement.

关键词： tectonic sequence, depositional architecture, Tertiary Kuqa depression.

Depositional sequence architecture and filling response model of the Cretaceous in the Kuqa depression,the Tarim basin

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2004年第Z2期47卷 86-96页

作者： LIN Changsong1, WANG Qinghua2, XIAO Jianxin1, WANG Guolin2, LIU Jingyan1 & JI Yunlong1 1. The Laboratory Center of the China University of Geosciences, Beijing 100083, China 2. The Institute of the Tarim Oil and Gas Exploration and Development, PetroChina Company Limited, Korla 841000, China The Laboratory Center of the China University of Geosciences Beijing 100083 China The Institute of the Tarim Oil and Gas Exploration and Development PetroChina Company Limited Korla 841000 China

The Cretaceous system of the Kuqa depression is a regional scale (second order) depositional sequence defined by parallel unconformities or minor angular unconformities. It can be divided into four third-order sequence sets, eleven third-order sequences and tens of fourth- and fifth-order sequences. It consists generally of a regional depositional cycle from transgres-sion to regression and is composed of three sets of facies associations: alluvial-fluvial, braided river-deltaic and lacustrine-deltaic facies associations. They represent the lowstand, transgres-sive and highstand facies tracts within the second-order sequence. The tectonic subsidence curve reconstructed by backstripping technique revealed that the Cretaceous Kuqa depression underwent a subsidence history from early accelerated subsidence, middle rapid subsidence and final slower subsidence phases during the Cretaceous time, with the correspondent tectonic subsidence rates being 3035 m/Ma, 4045 m/Ma and 510 m/Ma obtained from northern foredeep. This is likely attributed to the foreland dynamic process from early thrust flexural sub-sidence to late stress relaxation and erosion rebound uplift. The entire sedimentary history and the development of the three facies tracts are a response to the basin subsidence process. The slower subsidence foreland gentle slope was a favorable setting for the formation of braided flu-vial deltaic systems during the late period of the Cretaceous, which comprise the important sandstone reservoirs in the depression. Sediment records of impermanent marine transgression were discovered in the Cretaceous and the major marine horizons are correctable to the high-stands of the global sea level during the period.

关键词： Cretaceous sequence architecture, thrust flexural subsidence, marine transgression, filling response, Kuqa Depression.

Effective solutions to a global 3D visual system in networking environments

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2005年第11期48卷 2032-2039页

作者： ZHANG Liqiang1,2, ZHANG Yan3, YANG Chongjun2, LIU Suhong1, REN Yingchao2, RUI Xiaoping2 & LIU Donglin2 1. State Key Laboratory of Remote Sensing Sciences, School of Geography and Remote Sensing, Beijing Normal University, Beijing 100875, China 2. State Key Laboratory of Remote Sensing Sciences, Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 101001, China 3. Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 101001, China State Key Laboratory of Remote Sensing Sciences School of Geography and Remote Sensing Beijing Normal University Beijing China Chinese Academy of Sciences State Key Laboratory of Remote Sensing SciencesInstitute of Remote Sensing Applications China Institute of Geographical Sciences and Natural Resources Research Chinese Academy of Sciences China

The development of Web-based global 3D visual system has made progresses. However, there exist few mature and effective ways for managing, transmitting and visualizing massive spatial data. Based on the related work, the paper illustrates the ellipsoidal quadtree technique for rapid access multi-scale and multiple level geographical data, integrates the streaming with level-of-detail rendering method for transmitting the data on the network, and im-plements large-scale terrain surface simplification using M-band wavelet transforms and mul-tiresolution triangulations. We fulfil a web-based global terrain visual system using COM com-ponents on the basis of the above techniques. The system has a good prospect in the military simulation and city plans.

关键词： massive spatial data, streaming transmission, system architecture, M-band wavelet

Reconstructing Qatari Heritage： Simulacra and Simulation

在线全文

学校读者我要写书评

暂无评论

Journal of Literature and Art Studies 2017年第6期7卷 679-693页

作者： Mariam Ibrahim Al-mulla Qatar University Doha Qatar

Qatar today focuses so much on reconstructing its cultural heritage. It is clear that the reconstruction of Qatariheritage has stemmed from a nostalgic mood. Thus, the government subsumed that heritage into certaininterpretations and readings. Therefore, as presented today, Qatari heritage is no longer a self-referential heritage ofan indigenous culture. Rather, it has become a principle to reflect the social and economic existence of the Qataricommunity along with other global communities. The mass use of heritage and the implementation of Westernmuseum culture, however, might be viewed by some as the importation of a culture rather than the preservation ofan existing one. To minimise such potential problem, the government opted to ignore any distinctions betweenrepresenting heritage, interpreting it, or imposing new ideas and thinking around it. Instead, it has focused onintroducing a heritage based on linking images of foreign elements that characterise Qatari heritage with new socialand economic experiences.

关键词： Qatari heritage, Souk Waqif, Qatari architecture, Qatari traditions, cultural heritage in Qatar, Museum ofIslamic Art

Think ＂ Big＂ and become ＂ Big＂： On the architectureand space of an urban museum

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

科学教育与博物馆 2016年第3期2卷 223-229页

作者： ZHAO Wenjun Shanghai Natural History Museum (巳ranch of Shanghai Science & Technology Museum)

Nowadays many urban museums are situated in ever-changing cities face with problems regardingspace and architecture. The main question this paper wants to discuss is how the museum could achieve accessibilityand inclusiveness to a greater extent via rethinking and reshaping its space, both physically and vir -tually,Based on practices conducted by the Museum of London since its establishment in the 20th century, Iendeavour to understand how the museum architecture was established during the negotiation and compro -mise among different individuals and parties and to extend the conception by exploring the possibilities of expanding out of the traditional realm of the museum architecture.

关键词： museum, architecture, space, extension