江西省国土资源厅数据灾备系统建设实践

随着江西省国土资源信息化建设的不断深入,国土资源数据积累不断丰富,对数据存储系统有更高的需求,建设一套高性能、高安全性、高可靠性、可扩展性的集中存储系统,实现数据的本地灾备和异地容灾成为信息化建设的当务之急。鉴于此,江西省国土资源厅采用数据镜像、数据备份和连续数据保护（CDP）等技术,开展厅数据中心的灾备系统建设,并进行了系统演练,效果良好。     

Albedo enhancement of marine clouds to counteract global warming: impacts on the hydrological cycle

Recent studies have shown that changes in solar radiation affect the hydrological cycle more strongly than equivalent CO₂ changes for the same change in global mean surface temperature. Thus, solar radiation management ??geoengineering?? proposals to completely offset global mean temperature increases by reducing the amount of absorbed sunlight might be expected to slow the global water cycle and reduce runoff over land. However, proposed countering of global warming by increasing the albedo of marine clouds would reduce surface solar radiation only over the oceans. Here, for an idealized scenario, we analyze the response of temperature and the hydrological cycle to increased reflection by clouds over the ocean using an atmospheric general circulation model coupled to a mixed layer ocean model. When cloud droplets are reduced in size over all oceans uniformly to offset the temperature increase from a doubling of atmospheric CO₂, the global-mean precipitation and evaporation decreases by about 1.3% but runoff over land increases by 7.5% primarily due to increases over tropical land. In the model, more reflective marine clouds cool the atmospheric column over ocean. The result is a sinking motion over oceans and upward motion over land. We attribute the increased runoff over land to this increased upward motion over land when marine clouds are made more reflective. Our results suggest that, in contrast to other proposals to increase planetary albedo, offsetting mean global warming by reducing marine cloud droplet size does not necessarily lead to a drying, on average, of the continents. However, we note that the changes in precipitation, evaporation and P-E are dominated by small but significant areas, and given the highly idealized nature of this study, a more thorough and broader assessment would be required for proposals of altering marine cloud properties on a large scale.     

石家庄市霜冻期的气候异常特征分析

基于1955-2009年逐日最低气温资料,采用线性倾向估计法和异常霜冻指标,分析了石家庄市霜冻期的年际和年代际气候异常特征.结果表明,从气候平均上来看,石家庄市初霜冻日为11月7日,终霜冻日为3月21日,无霜冻期为230d;石家庄市特早初霜冻发生频率为5%,偏早初霜冻发生频率16%,特晚终霜冻发生频率为4%,偏晚终霜冻...     

Sorption of heavy oil onto Jiaozhou Bay sediment

The sorption of heavy oil onto sediment collected from Jiaozhou Bay was studied in a series of kinetic and equilibrium experiments using NaCl solutions. The effects of temperature, salinity, and pH of the medium on sorption behavior were investigated.Sorption equilibrium of the heavy oil and sediment was established within 60 min. The process was shown to follow a pseudo-second-order kinetic rate model. The sorption rate decreased with increasing initial heavy oil concentration in the solution. Batch equilibrium experiments showed that the sorption isotherm could be described by the Freundlich model. The standard free energy change and enthalpy change at the temperatures studied (283, 288, 293, and 298 K) were negative. These findings indicated that the process was spontaneous and exothermic. Salinity, pH and temperature influenced sorption performance. Sorption was favored by higher concentrations of NaCl, by lower pH values and by lower temperatures.     

对加强地震政府网站地震突发事件信息保障工作的思考

地震政府网站是地震行业面向社会宣传防震减灾工作、服务公众的重要窗口.汶川、玉树地震后,地震工作越来越受到社会的关注,地震政府网站已成为社会公众和主流媒体、网站获取地震信息的重要平台,在抗震救灾中发挥着越来越重要的作用.本文通过地震政府网站在汶川、玉树等地震突发事件中信息保障工作的实践,从网站应急制度建设、编制网站应急预...     

Background Seismicity and Its Application to Seismic Hazard Assessment in the North China Region

The historical earthquake activity is intense in the North China region. However, no middle-sized earthquakes have occurred in the last decades in the region since the MS6.2 earthquake in the Zhangbei region in 1998. The quiescence of moderate and strong earthquakes is quite prominent in North China. In this paper, we use small earthquake records in 1970~2009 to study background seismic activity in the North China region. The spatial distributions of seismic parameters are presented, including b-value, the maximum magnitude and annual occurrence probability of earthquakes of M≥6.0. Our results show regions with low b-value that include the Yuncheng region in the Shanxi rift, the Suqian region located in the Tancheng-Lujiang fault zone and the Shijiazhuang region in the Taihangshan block. Our analysis on the synthetic spatial pattern of seismicity indicate that seismicity in the North China region is mainly affected by the regional dynamic factors of deep structures.     

海拉尔盆地呼和湖凹陷断裂形成演化及其对油气的控制作用

断裂的形成及演化对油气的生成、运移和聚集具有重要的控制作用.本文系统分析了呼和湖凹陷断裂形成演化特征对油气成藏条件的控制作用.研究表明,呼和湖凹陷经历了3期构造演化,由下而上分别为:早期伸展断陷期( T5～ T22)、中期裂后热沉降断一坳期(T22-T04)和晚期坳陷期(T04～地表).纵向上主要发育了两套断裂系统,下...     

莎车盆地蒸发岩及盐矿物特征初探

莎车盆地喀什皮拉里剖面岩矿扫描电镜及能谱仪分析表明,大量石膏岩中含有石盐、钙芒硝、杂卤石、天青石、白云石及钾镁硫酸盐组合,说明盆地已达到钾镁盐化学沉积阶段,是成钾找钾重要线索,值得研究关注.     

四川九龙县溪谷输变电工程场地稳定性的岩体力学分析

溪谷输变电站工程场地具有较复杂的双层地质结构.岩土体拉分变形明显.场地后缘及底部岩土体的主应力和剪应力集中明显,堆积体内部岩体处于拉分松弛状态.岩土体的潜在变形模式以蠕滑-拉裂为主.在水库蓄水与地震共同作用的极限工况下.场地处于潜在不稳定状态.     

遥感和光谱地质进展及其对矿产勘查的实践应用

根据2009年Economic Geology出版的专辑Remote Sensing and Spectral Geology,近年来发表的相关文献以及研究和应用的实践,对遥感与光谱地质进行了综述.内容从测谱学、TM/ETM和ASTER宽波段遥感应用,到地面和航空高光谱遥感应用与热红外遥感.传统的信息填图主要是解译,现...