Advances in terrestrial system research in China   总被引：1，自引：1，他引：0  

Shaohong Wu  Yunhe Yin  Du Zheng  Qinye Yang  Haoyu Deng 《地理学报(英文版)》2016,26(7):791-802

Land surface is of spatial-temporal heterogeneity. Terrestrial system (TS) comprehensively studies on land surface and physical regionalization objectively describes geographical zonation of the system. China has a vast area with apparent spatial variations in resources and environmental conditions, which highly influence on socio-economic development. In this paper, progress of the TS studies in China is overviewed and research priorities in the near future are prospected. Since the 1950s, China has paid great attention to the TS study as its socio-economic development, and conducted research on physical geographical regionalization, eco-geographical regionalization and comprehensive regionalization. Along with the deepening of global change research, dynamics of TS have been highly concerned. During the studies, methodology has been developed from qualitative research of integration of experts’ brainpower gradually to quantitative research based on field observation and experiments of the natural processes, including physical, chemical and biological processes, as well as application of information technology and mathematical simulation. In the near future, TS would combine with the ideology, objectives and key researches of Future Earth program, to focus on the mechanism and regional effects of interaction among land surface elements, the response of TS to global change, the quantitative recognition on regional unit boundary, and the application to TS in sustainable socio-economic development.  相似文献   

渭河盆地深部构造活动的地裂缝孕育机理     

邓亚虹  彭建兵  慕焕东  李丽  孙振峰 《吉林大学学报(地球科学版)》2013,43(2):521-527

渭河盆地是我国乃至世界上地裂缝最发育、灾害最严重的地区。基于渭河盆地深部构造模式,采用有限元数值分析方法,分析了上地幔上隆、中地壳流展和上地壳拉张3种深部构造作用下盆地浅表岩土介质的应力和变形响应特征,从而揭示了渭河盆地深部构造活动与该区域地裂缝群发之间的孕育关系。结果表明：上地幔的隆起和中地壳侧向流展形成了浅部拉张应力环境,这种效应与盆地周边块体运动形成的伸展引张构造应力场叠加,再附加断裂伸展倾滑形成的局部拉伸应力场构成了地裂缝形成的主要动力来源。  相似文献   

大巴山城口弧形断裂带右旋走滑构造特征及其意义   总被引：1，自引：0，他引：1  

邓宾  李智武  刘树根  孙东  钟勇  李金玺  汤聪 《吉林大学学报(地球科学版)》2013,43(5):1501-1516

大巴山弧形构造带是几何学上对称平顶型、内部形迹削截的弧凸结构带,区域走向总体呈北西向延伸,其主边界城口断裂由北向南发生偏转（由近南北向→北西向→近东西向）,内部构造形迹与边界断裂呈明显削截和交切关系,弧形带凸顶方向与构造带南西向逆冲推覆极性一致。基于野外构造解析和15个样品的显微构造分析,对城口弧形断裂带右旋逆冲走滑构造特征和变形-变质特点及其沿走向的变化进行研究。宏观上,城口断裂带体现出早期近东西走向线理和平行于主断裂带弧形展布的后期线理两期世代和序列性,同时展现出强烈右旋走滑剪切变形特征,且走滑剪切变形强度由北西向南东减弱。微观构造上,断裂带构造岩普遍发生弱-中等强度变质,北段以中-高绿片岩相为主,右旋逆冲走滑剪切指向运动学标志体发育、变形强烈。断裂带南段以低绿片岩相为主,右旋走滑逆冲剪切指向运动学标志体相对稀疏、变形微弱。城口断裂带宏观与微观特征表明变质和（右旋走滑剪切）变形强度总体上由北西向南东逐渐减弱,呈非对称性。构造运动学上的非对称性和强烈右旋走滑剪切运动特征主要取决于印支期以来华南和华北板块汇聚过程中（尤其是燕山期）汉南能干性基底由南向北的强烈楔入作用。  相似文献   

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邓兴升  陈石桥  丁美青 《大地测量与地球动力学》2013,33(2):45-48

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A dipole wind curl pattern induced by Taiwan Island and its effect on upper stratification in the northeastern South China Sea   总被引：1，自引：0，他引：1  

邓奕  施平  周文  杜岩  谢强  庄伟  王东晓 《中国海洋湖沼学报》2012,30(6):944-952

Using hydrographic data sampled during four successive late summer-early autumn cruises in 2004-2007, vertical stratification along transects in the lee of Taiwan Island was analyzed to investigate upper ocean responses to orographically induced dipole wind stress curl (WSC). Results indicate that mixed-layer depth (MLD) and its relationship with thermocline depth varied under different local wind forcings. Average MLD along the transects from the 2004 to 2007 cruises were 18.5,30.7,39.2 and 24.5m, respectively. The MLD along the transects deepened remarkably and resulted in thermocline ventilation in 2005 and 2006, whereas ventilation did not occur in 2004 and 2007. Estimates indicate that frictional wind speed was the major factor in MLD variations. To a large degree, the combined effects of frictional wind speed and Ekman pumping are responsible for the spatial pattern of MLD during the cruises.  相似文献   

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贾丽娟  宁平  瞿广飞  邓文武 《大地测量与地球动力学》2012,32(4):67-70

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剧成宇  师艳  孙建勇  吴剑光  邓喀中 《大地测量与地球动力学》2012,32(1):141-144

????GPS??InSAR????????????????????????????PSO(Particle Swarm Optimization)?????????LSSVM (Least Square Support Vector Machine)????????????GPS?????????в?????????GPS??InSAR????????????????????????????,????GPS????????InSAR??????????30 mm,?????????InSAR?????????  相似文献   

襄阳万山井水位同震响应特征及成因分析     

罗俊秋  孙伶俐  邓峰  毛毅强  李明 《大地测量与地球动力学》2012,32(Z1):37-40

分析襄阳万山井数字化水位对苏门答腊M9.0、汶川M8.0和日本M9.0地震的同震效应,结合井台所在地的地质构造背景,总结出井水位同震响应和震后效应等特征.研究结果表明:该井水位同震响应均表现为水位同震下降型阶变,井与井之间的同震效应差别的原因与井所处构造位置、含水层系统的自身特性、地震震级和震中构造位置等有关.  相似文献   

三峡地区雾渡河断裂构造特征及最新活动性研究     

潘博  楚全芝  张长厚  邓志辉  毕珉烽  周庆 《大地测量与地球动力学》2012,32(Z1):5-9

根据野外调查获得的第一手资料,结合前人有关雾渡河断裂的研究成果,论述了雾渡河断裂的区域地质背景、构造应力场、深部构造特征、地貌水系样式,其中重点解决了雾渡河断裂的运动学特征和断裂活动时代.根据所采断裂上覆第四纪沉积物样品的TL测年数据(76.43±6.49 ka),确定雾渡河断裂晚更新世以来活动不明显.  相似文献   

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韩晶  邓喀中  李北城 《大地测量与地球动力学》2012,32(4):94-98

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