五指山台DSQ水管倾斜仪和VP垂直摆观测数据质量对比分析          下载免费PDF全文

郭昱琴  付国超  孙三健  吴双 《地震科学进展》2022,52(5):232-237

通过对五指山台DSQ水管倾斜仪和VP垂直摆的观测数据统计,精度内在质量以及同震形变波分析,认为连续率、漂移量、内精度资料质量指标均符合形变要求规范。水管倾斜仪和VP垂直摆对不同震中距的地震记录存在较大差异:①当震中距较小时,水管仪无同震响应,VP垂直摆同震记录清晰;②当震中距＞6000 km时,两种仪器记录能力相当。   相似文献   

Erratum to: Understanding and building upon pioneering work of Nobel Prize in Physics 2021 laureates Syukuro Manabe and Klaus Hasselmann: From greenhouse effect to Earth system science and beyond     

Zhou  Tianjun  Zhang  Wenxia  Chen  Deliang  Zhang  Xuebin  Li  Chao  Zuo  Meng  Chen  Xiaolong 《中国科学:地球科学(英文版)》2022,65(7):1414-1414

Science China Earth Sciences -  相似文献   

东昆仑造山带东段哈图沟–清水泉–沟里韧性剪切带塑性变形及动力学条件研究   总被引：1，自引：0，他引：1  

李小兵  裴先治  陈有炘  刘成军  李佐臣  李瑞保  陈国超  魏博 《大地构造与成矿学》2015,(2)

东昆仑造山带东段哈图沟–清水泉–沟里韧性剪切带记录了多个旋回的造山作用,本文通过对韧性剪切带中石英c轴组构和显微构造特征测试分析,探讨东昆仑造山带东段陆块间俯冲拼合及地壳伸展减薄的形成机制。结果显示,韧性剪切带变形温度介于380~650℃之间,形成环境为中–高绿片岩相到低角闪岩相,剪切带内差异应力值介于173~509 MPa之间,应变速率介于6.93×10–14~1.43×10–8 s–1之间,主体为10–11~10–10 s–1,显示韧性剪切带变形是快速俯冲作用下的产物,越靠近东昆仑造山带东段东昆中断裂带其变形温度、差异应力值及相应的应变速率值越大,表明东昆仑造山带东段韧性剪切变形中心为东昆中断裂带。利用不同方法所计算出的韧性剪切带运动学涡度值,显示韧性剪切带早期瞬时运动学涡度(0.56~1)对应于东昆仑造山带东段东昆南与东昆仑造山带东段东昆北陆块间俯冲的初始阶段,中后期运动学涡度(0.25~0.91)应当对应于东昆南与东昆北陆块间的俯冲碰撞阶段,最晚期的C′瞬时运动学涡度(0.19~0.51)则对应于后造山的伸展阶段。通过石英c轴组构结合其宏微观构造特征,认为东昆中构造带至少经历了3个期次的构造运动,分别为加里东晚期的逆冲兼左行走滑剪切作用、晚海西–印支期的逆冲兼右行走滑剪切作用和燕山早期及之后的脆韧性–脆性的左行走滑剪切作用。  相似文献   

A MATLAB-based program for processing geochemical data using fractal/multifractal modeling     

Jian Wang  Renguang Zuo 《Earth Science Informatics》2015,8(4):937-947

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均一化前后河南省年平均最高气温和高温日数的对比分析     

左璇  姬兴杰 《气象与环境科学》2020,43(4):38-43

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2018年湖南省农村自然灾害社会脆弱性测度          下载免费PDF全文

陈少华  张丽  左洪振  王满  姚爽 《气象与减灾研究》2020,43(4):299-306

农村社会发展状况与自然灾害发生频率和强度息息相关,提高农村自然灾害社会脆弱性对农村社会发展及实现乡村振兴战略具有重要作用。以湖南省各地级市州农村为研究对象,从敏感性和恢复力两个维度建立社会脆弱性指标评价体系,采用熵值法、模糊综合评价法和函数法测算敏感性、恢复力和脆弱性指数,分析2018年湖南省农村自然灾害社会脆弱性。结果表明,湖南省农村社会脆弱性空间分异特征明显,呈现“东低西高”的分布格局;多数地区的农村社会脆弱性处于低位水平,地区分异显著,具有两极分化分布特点,张家界地区最高,长沙和衡阳地区最低。在中低社会脆弱性的农村,恢复力指数对社会脆弱性贡献最大,其中最为显著的便是社会公共事业的建设水平和基础设施的完善水平。在高社会脆弱性的农村,敏感性指数对社会脆弱性贡献度最大。  相似文献   

Data processing and initial results from the CE-3 Extreme Ultraviolet Camera     

Jian-Qing Feng  Jian-Jun Liu  Fei He  Wei Yan  Xin Ren  Xu Tan  Ling-Ping He  Bo Chen  Wei Zuo  Wei-Bin Wen  Yan Su  Yong-Liao Zou  Chun-Lai Li 《中国天文和天体物理学报》2014,(12)

The Extreme Ultraviolet Camera(EUVC) onboard the Chang'e-3(CE-3)lander is used to observe the structure and dynamics of Earth's plasmasphere from the Moon. By detecting the resonance line emission of helium ions(He+) at 30.4 nm, the EUVC images the entire plasmasphere with a time resolution of 10 min and a spatial resolution of about 0.1 Earth radius(RE) in a single frame. We first present details about the data processing from EUVC and the data acquisition in the commissioning phase, and then report some initial results, which reflect the basic features of the plasmasphere well. The photon count and emission intensity of EUVC are consistent with previous observations and models, which indicate that the EUVC works normally and can provide high quality data for future studies.  相似文献   

基于时间序列法的北京市需水量预报(英文)   总被引：2，自引：0，他引：2  

翟远征  王金生  滕彦国  左锐 《地理学报(英文版)》2012,22(5):919-932

It is essential to establish the water resources exploitation and utilization planning,which is mainly based on recognizing and forecasting the water consumed structure rationally and scientifically.During the past 30 years(1980-2009),mean annual precipitation and total water resource of Beijing have decreased by 6.89% and 31.37% compared with those perennial values,respectively,while total water consumption during the same period reached pinnacle historically.Accordingly,it is of great significance for the harmony between socio-economic development and environmental development.Based on analyzing total water consumption,agricultural,industrial,domestic and environmental water consumption,and evolution of water consumed structure,further driving forces of evolution of total water consumption and water consumed structure are revealed systematically.Prediction and discussion are achieved for evolution of total water consumption,water consumed structure,and supply-demand situation of water resource in the near future of Beijing using Time Series Forecasting Method.The purpose of the endeavor of this paper is to provide scientific basis for the harmonious development between socio-economy and water resources,for the establishment of rational strategic planning of water resources,and for the social sustainable development of Beijing with scientific bases.  相似文献   

Tectonics of the offshore Red River Fault recorded in the junction of the Yinggehai and Qiongdongnan Basins     

Lei  Chao  Ren  Jianye  Pei  Jianxiang  Liu  Bowen  Zuo  Xiang  Liu  Jiaao  Zhu  Shiguo 《中国科学:地球科学(英文版)》2021,64(11):1893-1908

Science China Earth Sciences - The Red River Fault, which originated from the southeastern margin of the Tibetan Plateau, has a great significance for obtaining a further understanding of the...  相似文献   

Discovery of six high-redshift quasars with the Lijiang 2.4 m telescope and the Multiple Mirror Telescope     

Xue-Bing Wu  Wen-Wen Zuo  Qian Yang  Wei-Min Yi  Chen-Wei Yang  Wen-Juan Liu  Peng Jiang  Xin-Wen Shu  and Hong-Yan Zhou 《天文和天体物理学研究(英文版)》2012,(9):1185-1190

Quasars with redshifts greater than 4 are rare, and can be used to probe the structure and evolution of the early universe. Here we report the discovery of six new quasars with i-band magnitudes brighter than 19.5 and redshifts between 2.4 and 4.6 from spectroscopy with the Yunnan Faint Object Spectrograph and Camera (YFOSC) at the Lijiang 2.4 m telescope in February, 2012. These quasars are in the list of z > 3.6 quasar candidates selected by using our proposed J K/i Y criterion and the photometric redshift estimations from the SDSS optical and UKIDSS near-IR photometric data. Nine candidates were observed by YFOSC, and five among six new quasars were identified as z > 3.6 quasars. One of the other three objects was identified as a star and the other two were unidentified due to the lower signal-to-noise ratio of their spectra. This is the first time that z > 4 quasars have been discovered using a telescope in China. Thanks to the Chinese Telescope Access Program (TAP), the redshift of 4.6 for one of these quasars was confirmed by the Multiple Mirror Telescope (MMT) Red Channel spectroscopy. The continuum and emission line properties of these six quasars, as well as their central black hole masses and Eddington ratios, were obtained.  相似文献