检索结果-南通市图书馆

Dextral-Slip Thrust Faulting and Seismic Events of the Ms 8.0 Wenchuan Earthquake,Longmenshan Mountains,Eastern Margin of the Tibetan Plateau

引用

Acta Geologica Sinica(English Edition) 2009年第4期83卷 685-693页

作者： WU Zhenhan DONG Shuwen Patrick J. BAROSH ZHANG Zuoheng liao huaijun Institute of Geomechanics CAGS Beijing 100081 China Chinese Academy of Geological Sciences Beijing 100037 China P.J. Barosh ＆ Associates 103 Aaron Ave. Bristol RI 02809 USA China Geological Survey Beijing 100037 China Geological Brigade 316 Chongqing 401147 China

Dextral-slip thrust movement of the Songpan-Garze terrain over the Sichuan block caused the Ms 8.0 Wenchuan earthquake of May 12, 2008 and offset the Central Longmenshan Fault （CLF） along a distance of -250 km. Displacement along the CLF changes from Yingxiu to Qingchuan. The total oblique slip of up to 7.6 m in Yingxiu near the epicenter of the earthquake, decreases northeastward to 5.3 m, 6.6 m, 4.4 m, 2.5 m and 1.1 m in Hongkou, Beichuan, Pingtong, Nanba and Qingchuan, respectively. This offset apparently occurred during a sequence of four reported seismic events, EQ1-EQ4, which were identified by seismic inversion of the source mechanism. These events occurred in rapid succession as the fault break propagated northeastward during the earthquake. Variations in the plunge of slickensides along the CLF appear to match these events. The Mw 7.5 EQ1 event occurred during the first 0-10 s along the Yingxiu-Hongkou section of the CLF and is characterized by 1.7 m vertical slip and vertical slickensides. The Mw 8.0 EQ2 event, which occurred during the next 10-42 s along the Yingxiu-Yanziyan section of the CLF, is marked by major dextralslip with minor thrust and slickensides plunging 25°-35° southwestward. The Mw 7.5 EQ3 event occurred during the following 42-60 s and resulted in dextral-slip and slickensides plunging 10° southwestward in Beichuan and plunging 73° southwestward in Hongkou. The Mw 7.7 EQ4 event, which occurred during the final 60-95 s along the Beichuan-Qingchuan section of the CLF, is characterized by nearly equal values of dextral and vertical slips with slickensides plunging 45°-50° southwestward. These seismic events match and evidently controlled the concentrations of landslide dams caused by the Wenchuan earthquake in Longmenshan Mountains.

关键词： Ms 8.0 Wenchuan earthquake co-seismic slip slickensides seismic events Central Longmenshan Fault Eastern Tibetan Plateau

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

基于大数据的适水生态电网规划与优化研究

引用

中国高新科技 2024年第10期 64-66页

作者：张宸仲怀军蒋新星崔惠缪成晨国网宝应供电公司发展建设部江苏扬州225800 河海大学能源与电气学院江苏南京210012 扬州市水利发展中心江苏扬州225000

在复杂的能源和环境背景下,电力系统的规划和运行需要更高的智能化和环保性。适水生态电网综合了电力系统和水资源管理,具有很高的研究和实施价值。文章以大数据为切入点,深度探讨了适水生态电网的规划和优化策略,旨在推动电力系统向更... 详细信息

在复杂的能源和环境背景下,电力系统的规划和运行需要更高的智能化和环保性。适水生态电网综合了电力系统和水资源管理,具有很高的研究和实施价值。文章以大数据为切入点,深度探讨了适水生态电网的规划和优化策略,旨在推动电力系统向更高效、更环保的方向发展,实现电力和水资源的可持续利用。

关键词：大数据适水生态电网电网规划优化策略

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

CO2 flooding strategy to enhance heavy oil recovery

引用

Petroleum 2017年第1期3卷 68-78页

作者： Tuo Huang Xiang Zhou huaijun Yang Guangzhi liao Fanhua Zeng Petroleum Systems Engineering Faculty of Engineering and Applied ScienceUniversity of ReginaReginaSaskatchewanS4S 0A2Canada Production Technology Institute of Dagang Oilfiled Petro ChinaTianjin300280PR China Exploration and Production Company Petro ChinaBeijing100007PR China

CO_(2) flooding is one of the most promising techniques to enhance both light and heavy oil recovery.In light oil recovery,the production pressure in CO_(2) flooding in general keeps constant in order to maintain the miscibility of injected CO_(2) and crude oil;while in heavy oil recovery,a depleting pressure scheme may be able to induce foamy oil flow,thus the oil recovery could be further enhanced.In this study,different pressure control schemes were tested by 1-D core-flooding experiments to obtain an optimized one.Numerical simulations were conducted to history match all experimental data to understand the mechanisms and characteristics of different CO_(2) flooding strategies.For the core-flooding experiments,1500 mD sandstone cores,formation brine and a heavy oil sample with a viscosity of about 869.3 cp at reservoir condition(55℃ and 11 MPa)were used.Before each CO_(2) flooding test,early stage water-flooding was conducted until the water cut reached 90%.Different CO_(2) injection rates and production pressure control strategies were tested through core-flooding experiments.Experimental results indicated that a slower CO_(2) injection rate(2 ml/min)led to a higher recovery factor from 31.1%to 36.7%,compared with a high CO_(2) injection rate of 7 ml/min;for the effects of different production strategies,a constant production pressure at the production port yielded a recovery factor of 31.1%;while a pressure depletion with 47.2 kPa/min at the production port yielded 7%more oil recovery;and the best pressure control scheme in which the production pressure keeping constant during CO_(2) injection period,then depleting the model pressure with the injector shut-in yielded a recovery factor of 42.5%of the initial OOIP.For the numerical simulations study,the same oil relative permeability curve was applied to match the experimental results to all tests.Different gas relative permeability curves were obtained when the production pressure schemes are different.A much lower gas relative permeability curve and a higher

关键词： CO_(2)flooding Foamy oil Enhanced oil recovery Relative permeability curve Numerical simulation

来源：

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

6-BA处理对马铃薯内源激素含量及StTCP15基因表达的影响

引用

分子植物育种 2022年第3期20卷 852-858页

作者：车妍廖钰秋付学张宁司怀军甘肃农业大学生命科学技术学院兰州730070 甘肃农业大学甘肃省干旱生境作物学省部共建国家重点实验室培育基地兰州730070

TCP基因家族是参与调控植物内源激素的重要转录因子,马铃薯中StTCP15基因受到细胞分裂素、ABA和GA3的诱导表达,并在块茎休眠打破过程中StTCP15基因表达量变化显著。为探究外源6-BA对马铃薯块茎休眠时间、内源激素含量变化及StTCP15基因... 详细信息

TCP基因家族是参与调控植物内源激素的重要转录因子,马铃薯中StTCP15基因受到细胞分裂素、ABA和GA3的诱导表达,并在块茎休眠打破过程中StTCP15基因表达量变化显著。为探究外源6-BA对马铃薯块茎休眠时间、内源激素含量变化及StTCP15基因表达模式的影响,以马铃薯栽培品种‘鄂薯10号’块茎为试验材料,用液相色谱-质谱(LC-MS/MS)和实时荧光定量PCR (RT-qPCR)技术分别测定了10 mg/L6-BA处理下马铃薯块茎内源GA3、ABA、6-BA、IAA的含量及StTCP15基因表达量变化。结果表明外源6-BA处理与对照相比提前1周打破块茎休眠,块茎内源激素含量短时间与对照差异显著,随着时间延长差异减小;在块茎休眠阶段随着贮藏时间的延长处理组与对照组块茎内源激素ABA、GA3和IAA含量升高,6-BA含量下降;休眠打破后ABA和IAA含量降低,GA3和6-BA含量升高;发芽期间4种内源激素含量均升高。RT-qPCR分析结果表明6-BA处理及对照块茎休眠期间StTCP15基因表达量持续升高,休眠解除后表达量下降。StTCP15基因可能参与ABA信号通路,并在马铃薯休眠的解除中发挥作用。

关键词： 6-苄氨基嘌呤马铃薯(Solanum tuberosum L.) 内源激素 StTCP15基因

来源：

维普期刊数据库

同方期刊数据库评论