施甸5.9级地震震害与竖向地震力作用   总被引：3，自引：0，他引：3  

非明伦  樊跃新  崔建文  包一峰  陈坤华  卢吉高 《地震研究》2003,26(3):292-299

通过对施甸5．9级地震震害现象的机理分析，清晰地发现竖向地震作用起重要破坏作用，与获取的强地面运动峰值加速度竖向值相吻合。映证了在历次地震中许多地震工作常发现极震区竖向地震力起重要破坏作用的原因。  相似文献   

Assessment of a method used to time adjust past storm losses   总被引：2，自引：1，他引：1  

Stanley A. Changnon  David Changnon 《Natural Hazards》2009,50(1):5-12

A widely used method for adjusting past annual storm losses to present day values, needed to address the ever-changing socio-economic conditions, was assessed. The property insurance industry developed a comprehensive method for adjusting losses in past years to current year loss values. Characteristics of hurricanes occurring 50+ years ago and those in the recent years were examined to find similar early and recent pairs of storms for a comparative evaluation of their property losses. One pair found was Hurricanes Hazel (1954) and Hugo (1989), and another pair with similar features was Hurricanes Carol (1954) and Bob (1991). The insurance-based adjusted property loss values for these two pairs of storms were compared to determine if the early year values were comparable to the recent year values. The adjusted losses of the two pairs of hurricanes were found to have small differences of 7.8% and 8.1%, and these differences were due to somewhat different storm paths and slightly higher wind speeds in the two storms having higher losses. The adjustment method appears to adequately capture time differences in storm losses due to changes in population, wealth, inflation, structural density, and insurance coverage.  相似文献   

北京历史地震GIS技术平台的建立     

任雪梅  高孟潭  王银 《震灾防御技术》2006,1(2):163-168

通过对公元1000年以来北京市及附近地区6级以上地震震害资料的收集和整理,采用GIS技术,建立了北京市历史地震的地理信息系统技术平台。本文较详细介绍了建立该技术平台的过程,这对于今后这方面的工作有一定的参考价值。  相似文献   

Analysis of building deformation in landslide area using multisensor PSInSAR™ technique     

《International Journal of Applied Earth Observation and Geoinformation》2014

Buildings are sensitive to movements caused by ground deformation. The mapping both of spatial and temporal distribution, and of the degree of building damages represents a useful tool in order to understand the landslide evolution, magnitude and stress distribution. The high spatial resolution of space-borne SAR interferometry can be used to monitor displacements related to building deformations. In particular, PSInSAR technique is used to map and monitor ground deformation with millimeter accuracy. The usefulness of the above mentioned methods was evaluated in San Fratello municipality (Sicily, Italy), which was historically affected by landslides: the most recent one occurred on 14th February 2010. PSInSAR data collected by ERS 1/2, ENVISAT, RADARSAT-1 were used to study the building deformation velocities before the 2010 landslide. The X-band sensors COSMO-SkyMed and TerraSAR-X were used in order to monitor the building deformation after this event. During 2013, after accurate field inspection on buildings and structures, damage assessment map of San Fratello were created and then compared to the building deformation velocity maps. The most interesting results were obtained by the comparison between the building deformation velocity map obtained through COSMO-SkyMed and the damage assessment map. This approach can be profitably used by local and Civil Protection Authorities to manage the post-event phase and evaluate the residual risks.  相似文献