An accessible seismological dataset of 2021 Yangbi MS6.4 earthquake          下载免费PDF全文

Shuguang Wang  Hui Yang  Weilai Wang  Fang Wang  Zheng Liu  Wei Yang  Weitao Wang  Yunpeng Zhang  Lu Li  Jiupeng Hu  Xiaobin Li  Wenjian Cha  Beng Ye  Hongbo Zhu  Jun Yang 《地震科学（英文版）》2021,34(5):460-464

A M_S6.4 earthquake occurred on 21 May 2021 in Yangbi county, Dali prefecture, Yunnan, China, at 21: 48 Beijing Time (13: 48 UTC). Earthquakes with an M3.0 or higher occurred before and after the main shock. Seismic data analysis is essential for the in-depth investigation of the 2021 Yangbi M_S6.4 earthquake sequence and the seismotectonics of northwestern Yunnan. Institute of Geophysics, China Earthquake Administration (CEA), has compiled a dataset of seismological observations from 157 broadband stations located within 500 km of the epicenter, and has made this dataset available to the earthquake science research community. The dataset (total file size: 329 GB) consists of event waveforms with a sampling frequency of 100 sps collected from 18 to 28 May 2021, 20-Hz and 100-Hz continuous waveforms collected from 12 to 31 May 2021, and seismic instrument response files. To promote data sharing, the dataset also includes the seismic event waveforms from 20 to 22 May 2021 recorded at 50 stations of the ongoing Binchuan Active Source Geophysical Observation Project, for which the data protection period has not expired. Sample waveforms of the main shock are included in the appendix of this article and can be downloaded from the Earthquake Science website. The event and continuous waveforms are available from the Earthquake Science Data Center website (www.esdc.ac.cn) on application.  相似文献   

Prompt seismic data sharing for the 2021 Maduo earthquake in Qinghai province,China          下载免费PDF全文

Shuguang Wang  Hui Yang  Weilai Wang  Fang Wang  Zheng Liu 《地震科学（英文版）》2021,34(5):465-469

An M_S7.4 earthquake struck west China in Maduo county, Guoluo prefecture, Qinghai province on May 22, 2021, at 2:04 Beijing time (18:04 UTC on May 21, 2021), which broke the quiet period of Chinese mainland for 1382 days without earthquakes of magnitude 7 or higher. The analysis of the seismic data sequence would play an important role in the in-depth study of the Maduo earthquake and the Bayan Har block. The Institute of Geophysics, China Earthquake Administration (CEA), compiled observation data recorded through 57 broadband seismometers within 500 km of the earthquake epicenter and intended to share for further researches in earthquake science community. The shared dataset included waveforms of the event and its sequence with magnitudes of 3.0 or higher that occurred between May 22–31, 2021 with a sampling rate of 100 sps along with the continuous waveforms of 20 Hz and 100 Hz. Additionally, the seismic instrument response files also were shared. The event and continuous waveform records could be downloaded by submitting a request through the web platform of the Earthquake Science Data Center of the Institute of Geophysics, CEA (www.esdc.ac.cn).  相似文献   

基于PB符号的图元类点状符号共享研究     

陈泰生  陈梦琳  王本林  黄科佳  吴明光  张弘弢 《地理与地理信息科学》2014,30(5)

针对不同平台间地图符号难以共享的问题,面向图元类点状符号,提出一种基于PB符号的共享方法。从符号语法角度分析了图元类点状符号与基于路径的点状符号结构,对比了两类符号模型差异,探讨了PB点状符号结构的完备性。利用PB点状符号模型,设计了图元类点状符号共享方法,从几何与样式两方面,提出了点类型、直线类型、弧段类型、光滑曲线类型以及组合类型图元的映射方式。进而以SuperMap点状符号库为实验对象,构建了图元类点状符号共享实验,验证了该文所提图元类点状符号共享方法的可行性,将会促进GIS平台间地图符号共享。  相似文献   

关于GIS空间信息共享的若干再思考     

王金鑫  蔡頔 《测绘软科学研究》2011,9(3):30-33,50

空间信息共享是一个涉及理论、技术、标准与环境的综合的复杂问题。其中,空间数据模型理论是内在的核心要素,共享技术、空间信息标准与政策法规环境则是外在的必要条件。综合论述各要素的内涵、发展与重要意义,得出结论：综合、集成、分布式的海量空间数据模型亟待突破,网络、网格与数据库技术需与空间信息技术进一步融合,开放环境下的空间数据标准需要整合与完善,并呼吁理性的政策法规等社会环境。  相似文献   

基于地理本体的空间数据组织方法与应用     

陈玉鑫  李景文  崔爽  姜智东 《测绘与空间地理信息》2011,(6):47-49,53

地理本体描述了地理信息科学领域内不同层次和不同应用方向上的地理空间概念的详细内涵和层次关系。研究和探讨了基于地理本体的空间数据组织方法,将地理实体与地理本体建立映射关联,把地理本体系统中的实例用面向对象的方法进行组织和表达,从而满足兼容空间数据管理和语义共享要求,解决语义异构导致的不同应用领域间数据组织与共享的困难。并...  相似文献   

点状地图符号数据结构同化研究   总被引：1，自引：1，他引：0  

吴明光  闾国年  陈泰生 《武汉大学学报(信息科学版)》2011,(2):239-243

从点状地图符号的构建和共享角度出发,分析了基于TrueType、图元法以及CAD图块符号等点状地图符号数据结构的优缺点。针对地图符号的图形特征,提出了一种基于路径的点状符号数据结构,给出了TrueType符号、图元符号、信息块符号到基于路径的点状符号同化方法。实验验证了基于路径的点状符号数据结构具有较强的描述能力和较强的扩展性。  相似文献   

Catch shares and the main Hawaiian Islands bottomfish fishery: Linking fishery conditions and fisher perceptions     

《Marine Policy》2014

To address overfishing concerns, a total allowable catch (TAC) management program was instituted in the main Hawaiian Islands (MHI) bottomfish fishery during 2007. Using results from a recent survey of bottomfish fishermen, this paper details behavioral and social aspects of bottomfish fishing in Hawaii and explores fisher perceptions towards current fishery conditions and future management alternatives. The paper further discusses the applicability of potential catch share management for this fishery. Bottomfish fishermen expressed uncertainty towards catch share programs and appear to be reluctant about any movement towards catch share management. This paper describes many preexisting conditions in the fishery that suggest a catch share program may not be practical at this time.  相似文献   

提升气象微博公众服务能力的策略探析     

罗桂湘 《气象研究与应用》2014,(2):114-116

利用科技传播理论剖析微博个案,探析提升气象微博公众服务能力的策略：除了增强气象信息的科学性之外,还可借鉴其他科技微博的做法,在通俗性、可视性、贴近性、互动性等方面努力,扩大气象微博的影响力、增强粘度,力争使气象微博成为群众的好顾问、好帮手.  相似文献   

基于网络爬虫的Web服务抓取解析器的设计与实现     

陈晓慧  陈荣国  卫文学 《地理信息世界》2010,8(3):64-68

随着Web服务和网络技术的发展,越来越多的Web服务得以开发并发布到网络上.由于网络上存在的Web服务相互之间没有内在的必然联系,用户很难快速有效地获取和利用这些服务.本文设计了一种Web服务抓取解析器框架,包括URL抓取器、WSDL文档解析器和用于结构化存储Web服务信息的数据库等.该抓取解析器采用网络爬虫程序对互联网中的URL进行搜索,通过搜索发现分布在网络上的Web服务,并最终建立起一个关于Web服务的信息库,为共享Web服务提供条件.  相似文献   

数字签名技术与信息共享     

林仙坎 《福建地震》2001,(4)

本文简要地叙述了信息共享中的有关问题。为了解决信息共享中的有关责任问题 ,本文提出用成熟的数字签名技术 ;并且对提高数字签名技术的运算速度提出了具体的技术措施。  相似文献