地震烈度快速评估研究现状与分析

对烈度快速评估的相关问题的研究现状进行了阐述和分析,包括地震烈度评定标准、烈度衰减规律、地震烈度与地震动参数之间定量关系、地震烈度速报系统及仪器烈度等.讨论了在强震观测台网密集、比较稀疏以及无法实时和近实时获取震后强震资料等情形下,进行烈度快速评估的方法以及尚需解决的问题.目前我国大部分地区强震观测台网较为稀疏的情况下,采用基于地震学的地震动合成方法估计地震烈度分布是进行烈度快速评估较为合适的方法,进行相关研究对震后救灾部署和震灾评估具有重要意义.     

攀枝花地震台数字地震分析探讨

结合地震波记录原理,分析并讨论攀枝花台数字仪震相的一些物理特征,并使用MATLAB对攀枝花、长春台的地震资料做简单滤波分析,便于真实地反映地震波震相。参考川滇交界地区地质构造,总结出攀枝花台对多次地震记录震相分析的经验规律,为地震速报快速识别震相提供实用参考。     

基于无人机遥感和GIS技术的土地利用快速详查方法研究

分析了新型无人机遥感技术相对于传统遥感的先进性,并结合土地快速详查的任务需求,表明利用无人机遥感进行土地利用快速详查是可行的。根据无人机遥感数据的特征详细阐述了图像的后处理技术,提出了基于无人机遥感和地理信息系统（ GIS）技术的土地利用快速详查工作流程,重点研究了土地信息的提取,并分析了面向对象的遥感影像分类方法的优点。针对土地利用快速详查的要求,对土地利用数据库的构建做了深入分析,详细阐述了数据库的存储结构、时空数据模型和土地利用详查追溯三个方面,很大程度上避免了数据冗余问题,提高了数据库中有效信息的比重。研究成果可为新时期国土资源管理工作提供有益参考和借鉴。     

Early Miocene post-collisional magmatism in NW Turkey: geochemical and geochronological constraints

The Alaçam region of NW Turkey lies within the Alpine collision zone between the Sakarya continent and the Menderes platform. Four different tectonic zones of these two continents form imbricated nappe packages (including the Afyon zone), intruded by the Alaçam granite. Newly determined U-Pb zircon ages of this granite are 20.0 ± 1.4 and 20.3 ± 3.3 Ma, indicating early Miocene emplacement. Rb-Sr biotite ages of the granite are 20.01 ± 0.20 and 20.17 ± 0.20 Ma, suggesting fast cooling at a shallow crustal level. Geochemical characteristics show that the Alaçam granite is similar to numerous EW-trending plutons in NW Anatolia.

Gneissic granites of the Afyon tectonic zone were intruded by the Miocene Alaçam granite and have been interpreted in earlier studies as sheared parts of the Alaçam granite, which formed along a crustal-scale detachment zone under an extensional regime. We determined a U-Pb zircon age of 314.9 ± 2.7 Ma for a gneissic granite sample of the Afyon zone, demonstrating that these rocks are unrelated to the Miocene Alaçam granite. The early Miocene granitic plutons bear post-collisional geochemical features and are interpreted as products of Alpine-type magmatism along the Izmir–Ankara suture zone in NW Turkey, and seem to have no genetic relation to the detachment zone.     

Rapid earthquake loss assessment after damaging earthquakes

This article summarizes the work done over the last decades regarding the development of new approaches and setting up of new applications for earthquake rapid response systems that function to estimate earthquake losses in quasi-real time after an earthquake. After a critical discussion of relevant earthquake loss estimation methodologies, the essential features and characteristics of the available loss estimation software are summarized. Currently operating near-real-time loss estimation tools can be classified under two main categories depending on the size of area they cover: global and local systems. For the global or regional near-real-time loss estimation systems: GDACS, WAPMERR, PAGER, and NERIES-ELER methodologies are presented together with their loss estimations for the 2009 Abruzzo (L’Aquila) earthquake in Italy. Examples are provided for the local rapid earthquake loss estimation systems, including the Taiwan Earthquake Rapid Reporting System, Real-time Earthquake Assessment Disaster System in Yokohama, Real Time Earthquake Disaster Mitigation System of the Tokyo Gas Co., and Istanbul Earthquake Rapid Response System.     

快速程序升温-石墨炉原子吸收光谱法测定地质样品中痕量镉

建立了快速程序升温-石墨炉原子吸收光谱测定地质样品中痕量镉的分析方法.样品用硝酸-氢氟酸-高氯酸进行前处理,为提高分析效率,改进了石墨炉升温程序,省去了常规方法中的灰化步骤,使测定镉的程序升温时间由常规的90～100 s降至24 s,工作效率显著提高.方法检出限为0.011 μg/g,加标回收率为93.5%～106.0...     

高频大地电磁测深（EH-4）在热储构造勘查中的试验研究-以抚州地热区为例

EH-4电磁成像系统是目前国内外较为先进的电磁法勘探仪器,它具有勘探深度大、成果反应直观、轻便高效等优点。本文首先介绍了该方法的工作原理,然后以抚州地热区的勘查为例,说明它在热储构造勘查中的应用。本文通过高频大地电磁测深（EH4）在抚州地热区的应用,结合快速松弛反演（RRI）技术,揭露了该地区的深部地电剖面特征,反演结...     

原子吸收分光光度法快速测定红土镍矿中镍

试样经烘干处理后,利用酸溶法或碱融法制备稳定的分析溶液,然后利用原子吸收分光光度计于波长232.0nm处,随同标准曲线测量镍含量,此方法简单、快捷,所选分析线干扰小、灵敏度高,稳定性和准确度均满足要求。     

零次差分CHAMP卫星简动力定轨和SLR轨道验证

采用零次差分简化动力法对CHAMP卫星GPS相位观测资料进行精密轨道计算,并将计算结果与CHAMP快速轨道进行比对.结果表明X,Y、Z方向差值均方根为0.061 m,0.060 m与0.066 m,精度达到了厘米级;同时利用全球人卫激光观测数据对所求轨道进行验证,表明其精度优于20 cm.     

基于区域差异类型的流动人口快速监测方法

改革开放以来,我国流动人口增长迅猛,但目前我国还缺乏对流动人口进行快速动态监测的有效方法与方案,特别是未能考虑我国流动人口的区域差异性,这已成为各级政府在进行科学决策和及时行动时的主要制约因素之一.本文尝试提出一种基于区域差异的我国流动人口快速监测方法,旨在应用流动人口区域差异的知识来改正流动人口监测样点网络布局方案和...