Rapid estimation of earthquake loss based on instrumental seismic intensity: design and realization

As a result of our ability to acquire large volumes of real-time earthquake observation data, coupled with increased computer performance, near real-time seismic instrument intensity can be obtained by using ground motion data observed by instruments and by using the appropriate spatial interpolation methods. By combining vulnerability study results from earthquake disaster research with earthquake disaster assessment models, we can estimate the losses caused by devastating earthquakes, in an attempt to provide more reliable information for earthquake emergency response and decision support. This paper analyzes the latest progress on the methods of rapid earthquake loss estimation at home and abroad. A new method involving seismic instrument intensity rapid reporting to estimate earthquake loss is proposed and the relevant software is developed. Finally, a case study using the M _L4.9 earthquake that occurred in Shun-chang county, Fujian Province on March 13, 2007 is given as an example of the proposed method.     

国家地震速报备份系统的部署与运行

国家地震速报备份系统是由中国地震局出资,在广东省地震台网中心建设的一套全自动地震速报系统.本文介绍了国家地震速报备份系统的职责、系统架构、主要功能模块、系统工作原理、部署情况与台网规模,分析了系统2009-2010年运行两年来的工作情况,并对系统自动产出的地震定位结果进行初步的统计与比较,对系统运行的总体效果给予了初步...     

Three new species of Anthomedusae (Hydrozoa: Hydroidomedusa) from the Guangdong coastal water, China

The samples of Anthomedusae were collected from the Guangdong coastal water,China.Three new species of Anthomedusae,i.e.Zhangiella condensum Huang,Zhang et Sun,sp.nov.,Hydractinia leizhouensis Huang,Zhang et Yang,sp.nov.,and Cladosarsia simplex Huang,Zhang et Ke,sp.nov.are described.All type specimens are deposited in College of Ocean and Earth Sciences,Xiamen University.     

北半球冬季环流异常的垂直结构特征

本文对北半球100,500,700和1000hPa四层高度距平资料,应用相关分析,EOF分解和谐波分析方法,分析了北半球冬季环流异常过程中的垂直结构特征。结果表明:第一特征向量在对流层中具有明显的相当正压性结构,并且在环流异常中占有最大权重,它和半球性的天气异常有明显关系。谐波分析表明大气环流异常的正压性主要和超长波的活动有关。     

田东35KV输电线路防雷设计分析

对广西田东县35KV输电线路进行防雷措施进行设计时,综合考虑当地气候、地形、环境等多种因素,并进行雷击风险评估工作,给出了最佳的防雷保护方案,从而有效地降低输电线路雷击跳闸率,减少雷电对电网安全运行的影响.     

赣州农业巨灾保险气象灾害指数设计

农业巨灾保险可有效分散灾害的风险,气象灾害是造成农业巨灾的主要灾害之一,因此设计合理的气象灾害保险指数可为农业巨灾保险提供科学的技术支撑.利用赣州市17个县(市、区)国家气象站1981—2020年和区域气象站2011—2020年观测资料,结合赣州气候以及气象灾害出现特点,经专家咨询和调研,确定暴雨、冰霜冻害、干旱和大风等4种气象灾害作为赣州农业巨灾保险的气象灾种.根据不同灾害出现的气候概率以及投保单位的要求,设计了赣州农业巨灾保险不同等级的气象灾害指数,并确定农业巨灾保险气象灾害赔付的触发概率范围为45％—70％.经验证,赣州农业巨灾保险气象灾害指数可用.     

闽西北常口—南舟断裂带与萤石成矿关系

福建省区域地质调查队三分队在元坑幅及埔上幅１：５万区调中分别发现了将乐常口大型萤石矿和顺昌南舟萤石矿。两个矿床均位于常口－南舟北东向断裂带中，受其次级张性断裂直接控制，矿床成因类似。     

Geochemical study on oil-cracked gases and kerogen-cracked gases (II)—Discrimination methods between oil-cracked gases and kerogen-cracked gases

In the processes of discrimination between oil-cracked gases and kerogen-cracked gases, Behar and Pinzgofer et al.’s results were adopted in the former researches, in which the ratio of C₂/C₃ is basically a constant while the ratio of C₁/C₂ gradually increases in the course of primary cracking of kerogen. Otherwise in the course of secondary cracking of oil, the ratio of C₂/C₃ increases rapidly while C₁/C₂ keeps relatively stable. Our study on analogue experiment shows that, whether it is oil or kerogen, in its process of gas generating by cracking, the ratios of C₂/C₃, C₁/C₂ or C₁/C₃ will all be increased with the growth of thermal conditions. In comparison, the ratio of C₂/C₃, which is affected by genetic type to some comparatively less extent, mainly responds to the maturity of gases, while the value of C₂/C₃ is about 2, and that of C₂/iC₄ is about 10, and the corresponding value of R _o is about 1.5%–1.6%. The influence of gas source on C₂/C₃ is less than that of gas maturity, otherwise C₁/C₂ (or C₁/C₃) is obviously affected by cracking matrices. The ratios of C₁/C₂, C₁/C₃ of oil-cracked gases are less than that of kerogen-cracked gases, under the condition that the ratios of C₂/C₃ are similar in value, so are the value of dryness indexes. There exists wide diffidence between this view and the former discrimination method in theory. The analysis of the spot sample indicates that we can apply the above basic view to dealing efficiently with the problem of the discrimination between oil-cracked gas and kerogen-cracked gas.

     

基于TCP/IP协议的地震波形数据实时传输技术在数字地震台网联网中的应用

介绍了TCP/IP传输协议及其在广东省数字地震台网联网中进行地震波形准实时传输应用的技术思路和解决方案.     

广东大鹏半岛“仙人石”的成因

大鹏半岛海岸"仙人石"及周边的花岗岩石蛋是大鹏半岛海岸旅游的重点景点之一,一直被认为是典型的海蚀柱。调查发现仙人石所在海岸为现代潮滩,波浪动力极弱,不足以形成海蚀地貌,而且,石蛋的凹槽朝向并不指向大海,其海拔高度变化很大,因而不是在某一海面上形成的,难以用波浪作用来解释其成因。文章根据野外调查的结果认为,"仙人石"和周围石蛋形成是花岗岩化学风化的结果,起源于其所在位置的花岗岩出露后先是经受化学风化而形成突岩地貌,其后进一步的化学风化使突岩崩塌形成了仙人石及散落在周围的石蛋。散落的石蛋和仙人石下部被风化残积物及土壤掩埋。石蛋被埋在地面以下部分因更加潮湿而产生较强的风化作用,并导致石蛋下部形成凹槽。冰后期海平面上升后海水和地表径流冲刷了地表物质和降低原始地面,使凹槽得以出露。仙人石附近的花岗岩深度风化剖面说明大鹏半岛具有形成突岩的物质基础,大鹏半岛中生代燕山期花岗岩入侵之后因新构造运动被抬升出露则是突岩形成的地质背景。