基于NB-IoT技术的地震预警信息发布终端设备研制

天津市地震局于2015年通过首都圈预警示范工程项目建设，完成地震预警信息服务网络建设，并选取6所学校安装地震预警信息发布装置，提供地震预警信息示范服务，但由于信息发布装置安装复杂且价格偏高，在一定程度上影响终端设备的普及，制约地震预警信息社会化服务进程。同时，已有终端设备如同黑箱，不利于二次开发应用，存在安全隐患，影响服务质量。因此，天津市地震局积极推进基于NB-IoT技术的地震预警信息发布终端设备研制，实现低成本、低功耗、低延时目标及地震预警信息社会化服务。     

岩溶断陷盆地不同海拔植物水分利用效率分析

为探讨不同海拔高度的养分、环境要素与植物水分利用效率变化的关系，以岩溶断陷盆地云南小江流域的乔木、灌木、草本为研究对象，分析水分利用效率和叶片养分浓度随海拔的变化情况。结果表明:（1）研究区内海拔2 000 m处的草本植物的叶片δ13C值最高，2 200 m处的乔木的叶片δ13C值最低；（2）海拔高度对乔木、灌木的植物水分利用效率影响大于草本植物，草本植物的水分利用效率随海拔高度的变化甚微，两者之间的拟合度较小；高值区出现在海拔为2 200 m处的乔木；低值区出现在海拔为2 000 m处的草本植物；（3）不同海拔水分利用效率与叶片N、P浓度的相关性较弱（与叶片的N浓度呈弱正相关，与叶片的P浓度呈弱负相关）；（4）不同海拔水分利用效率与各气候因子的相关性较弱，与多年平均气温、多年平均降雨量、多年平均日照时数均呈弱正相关。      

珠江三角洲区域一体化研究综合信息系统的设计与应用

在分析地理信息系统技术发展与应用现状的基础上,设计了珠江三角洲区域一体化研究综合信息系统的结构框架。根据珠江三角洲的实际情况,并在经济地理学,城市地理学,区域科学等理论的指导下,开发了针对该区域一体化研究的模型分析系统。基于元数据库的数据集成与模型管理技术,能对不同数据源,不同数据类型与时空特性的多元数据处理与分析。本综合信息系统在区域产业布局,资源窨组合,城市体系空间结构演化等方面得到应用,将为     

核线影像生成过程中的大图像分块问题

讨论了核线影像生成过程中的大图像分块处理问题 ,给出了按条分块的策略及其有关问题的解决方法。研究成果对其它应用中的大图像分块处理也具有一定的参考价值     

Metallogenic focus-area and superlarge mineral deposits in the bordering zones between China,Russia and Mongolia

Two deep-sea cores in the northwest Pacific have been analysed for sedimentology, mineralogy and environmental magnetism. The results show that after eliminating the interference from volcanism, several proxies such as quartz content, mass susceptibility and anhysteretic magnetic remanence can be used to indicate the eolian deposit from East Asia, and provide information on paleo-atmospheric circulation. A comparison of eolian record in Cure RC10-175 with its oxygen isotopic curve has revealed that the peaks of eolian accumulation occurred at the climatic “optimum” of the Holocene and the last interglaciation, showing the fairly complex nonlinear relationship between continental/pelagic eolian records and the global glacial cycles as well as within the climatic and environmental system. Project supported by the National Natural Science Foundation of China (Grant No. 9291104)     

Tectono–Magmatic Evolution and Metallogenesis along the Northeast Jiangxi Deep Fault, China

Abstract: From the southernmost part of Jiangsu province to the northeastern part of Jiangxi province, China, the Northeast Jiangxi Deep Fault runs for about 400 km length with a width of 30 to 40 km. This fault marks the suture zone of two ter-ranes of Proterozoic age. At the both sides of the fault, Yanshanian granitic activity is recognized. That is, the Dexing-Wuyuan porphyry belt on the NW side of the fault, and the Damaoshan-Lingshan granite belt on the SE side. The former activity is characterized by the occurrence of small stocks of granodioritic composition, rich in siderophile elements but poor in LIL elements. No distinct Eu anomaly is recognized in the REE pattern, and a low initial ⁸⁷Sr/⁸⁶Sr ratio is reported. Magnetite, sphene and apatite are observed as accessory minerals. On the contrary, granitic activity on the SE side of the fault is characterized by the occurrence of composite batholiths, in general of granitic to monzogranitic composition, rich in LIL and alkali elements but poor in siderophile and alkali earth elements. A strong Eu anamaly is recognized in the REE pattern, and initial ⁸⁷Sr/⁸⁶Sr ratios are as high as 0. 716. Fluorite, zircon and REE minerals are observed as accessory minerals. These two contrasting granitic activities are refered to as syntexis– and transformation–types, respectively, following the classification commonly used in China, and have similar petrochemical characteristics to those defined for the magnetite– and ilmenite–series, and I– and S-type granitoids. Considering that the above igneous activity occurred far from the supposed subduction zone along the East Coast of China, intracontinental A-type (continent to continent) subduction is proposed to have occurred northwestwards along the NE Jiangxi Deep Fault during Yanshanian time due to a strong compressional stress from SE to NW. A-type subduction introduced the continental slab to some depth, and resulted in the production of the paired granitic activity observed on both sides of the fault. Many mineral deposits are associated with both granitic belts. In the Dexing-Wuyuan porphyry belt, the Dexing porphyry Cu and Yinshan polymetallic deposits are representative, whereas in the Damaoshan-Lingshan granite belt, several tens of rare metal deposits are known such as the Geyuan Nb–Ta–W–Sn deposits. Metal assemblages of those deposits reflect the source materials of magmas in both granitic belts.     

赣南地区生态环境与经济发展初步研究

赣南地区可划分为三个自然生态环境区,即：东、南部山地丘陵区、中部盆地丘陵区及西部山地丘陵区。从全区范围来说,单位耕地面积创造的农业产值与森林覆盖率呈显著正相关;而目前中部盆地丘陵区内的工业发展及西部山地丘陵区的农业发展与区内森林植被覆盖率呈负相关。     

区域地下水溶质运移随机理论的研究与进展

在总结近年来国内外区域地下水溶质运动研究的基本理论、方法和部分成果的基础上,论述了溶质在大区域运动的主要影响因素为区域介质的空间变异性。首先总结了野外条件下饱和介质和非饱和介质土壤渗透性能的空间变异性结果,由于野外渗透介质严重的空间变异性,研究溶质在野外条件下的运动采用了随机理论方法。基于Lagrange方法和Euler方法,研究结果表明,在渗透系数为对数正态二阶平稳及一阶扰动近似条件下,平均浓度满足对流－弥散方程,方程中宏观弥散度决定于介质渗透性能的统计特征,总结了一系列宏观弥散系数的表达形式,在此基础上,指出了需要进一步研究的问题。     

平衡剖面研究中的新方法

随着现代化计算手段的运用的新的地学思维方法的影响,在平衡剖面研究中引入计算机模拟技术,分数维方法,三维模式等新方法,使平衡剖面技术具有了更加广阔的应用前景。另外,本文还对平衡剖面技术的局限性和发展趋势进行了探讨。     

福建数字地震台网试运行期间编目工作的若干问题

本文对福建数字地震台网试运行期间在测定地震参数、编辑地震目录和台网观测报告等方面存在的问题及其解决过程作简短回顾。