Inter- and intra-annual trend analysis of water level and flow in the middle and lower reaches of the Ganjiang River,China

ABSTRACT

The Ganjiang River is the largest tributary of Poyang Lake in China, and its hydrological regime variation greatly affects the utilization of regional water resources and the ecological environment of the lake. In this study, a novel trend analysis method, the Moving Average over Shifting Horizon (MASH), was applied to investigate the inter- and intra-annual trends of flow and water level from 1976 to 2016 at the Xiajiang and the Waizhou hydrological stations in the Ganjiang River. The Significant Change Rate Method (SCRM) was proposed to determine the MASH averaging parameters. The trend analysis results show a statistically significant decrease in water level series throughout the year and the relationship of flow and water level have changed greatly at the Waizhou station. The sediment load reduction, large-scale sand mining and water level decrease of Poyang Lake are identified as the main causes for the water level decrease.     

Proline with or without hydroxyproline influences collagen concentration and regulates prolyl 4-hydroxylase α (I) gene expression in juvenile turbo (Scophthalmus maximus L.)

Journal of Ocean University of China - This study was conducted to investigate the effect of dietary proline (Pro), and Pro and hydroxyproline (Hyp) in combination on the growth performance, total...     

英峰岭剖面红土的粘土矿物和化学特征与成土环境关系

地球化学与粘土矿物学研究表明,广东雷州半岛英峰岭多期红土是拉弱武岩红土化初级阶段的产物,由剖面底层至顶层,红土成熟度依次递增。各层红土中主要粘土矿物含量和粘土的Ｆｅ２Ｏ３含量,以及工土和粘土的氧化,淋溶,富铁铝等化学特征系数与红土埋深之间呈波动起伏的关系。     

An interior solution of the vector graviton gauge field

We have found an interior solution of the Einstein equation containing a vector graviton field under a special mass distribution.     

Phase Equilibria Constraints on Relations of Ore-bearing Intrusionswith Flood Basalts in the Panxi Region, Southwestern China

There are two types of temporally and spatially associated intrusions within the Emeishan large igneous province (LIP); namely, small uitramafic subvolcanic sills that host magmatic Cu-Ni-Platinum Group Element (PGE)-bearing sulfide deposits and large mafic layered intrusions that host giant Ti-V magnetite deposits in the Panxi region. However, except for their coeval ages, the genetic relations between the ore-bearing intrusions and extrusive rocks are poorly understood. Phase equilibria analysis (Q-PI-OI-Opx-Cpx system) has been carried out to elucidate whether ore-bearing Panzhihua, Xinjie and Limahe intrusions are co-magmatic with the picrites and flood basalts (including high-Ti, low-Ti and alkali basalts), respectively. In this system, the parental magma can be classified as silica-undersaturated olivine basalt and silica-saturated tholeiite. The equivalents of the parental magma of the Xinjie and Limahe peridotites and picrites and iow-Ti basalts are silica-undersaturated, whereas the Limahe gabbro-diorites and high-Ti basalts are silica-saturated. In contrast, the Panzhihua intrusion appears to be alkali character. Phase equilibria relations clearly show that the magmas that formed the Panzhihua intrusion and high-Ti basalts cannot be co-magmatic as there is no way to derive one liquid from another by fractional crystallization. On the other hand, the Panzhihua intrusion appears to be related to Permian alkali intrusions in the region, but does not appear to be related to the alkali basalts recognized in the Longzhoushan lava stratigraphy. Comparably, the Limabe intrusion appears to be a genetic relation to the picrites, whereas the Xinjie intrusion may be genetically related to be low-Ti basaits. Additionally, the gabbro-diorites and peridotites of the Limahe intrusion are not co-magmatic, and the former appears to be derived liquid from high-Ti basalts.     

安徽沿江地区中生代岩浆岩的基本特点

安徽沿江地区位于长江中下游岩浆带中段,中生代岩浆活动强烈,类型复杂,特点突出。它具有夹心饼干式分带现象。中间为富碱的高钾钙碱性岩系和橄榄安粗岩系;两侧为钙碱性岩系。中间的岩浆岩具有高钾富碱、高Ｓｒ,低Ｍｇ、Ｃｒ、Ｎｉ,εＮｄ变化大但Ｉｓｒ变化小且较低以及岩浆演化的多样性为特点。     

Mid-Late Neoproterozoic rift-related volcanic rocks in China: Geological records of rifting and break-up of Rodinia

Early Cambrian and Mid-Late Neoproterozoic volcanic rocks in China are widespread on several Precambrian continental blocks,which had aggregated to form part of the Rodinia supercontinent by ca.900 Ma....     

大地热流测量数据子库

大地热流数据子库是建立在Microsoft Access 97基础上,以Microsoft Visual Basic 6.0开发、基于Windows平台上的集数据储存、编辑、报表打印输出及基本数据解释处理于一体的数据库管理软件.具有运行速度快、操作简单、易学及可靠性强等优点.特别编制了强大的数据查询系统,提供了各种查询方式,大大方便了用户.     

基于迭代反演的层间多次波压制方法

层间多次波与有效波在走时、频率和叠加速度上差异较小,因此层间多次波压制常难以获得理想效果.本文提出一种基于迭代反演的层间多次波压制方法（MSI,Multiple Suppression Inversion）,该方法以共聚焦点（CFP,Common Focus Point）层间多次波压制理论为基础,通过构建卷积因子,将层间多次波压制转变为迭代反演的问题,直接利用观测的地震数据进行迭代反演计算,进而完成多次波压制.MSI方法避免了共聚焦点方法中构建CFP道集的聚焦运算,大幅降低层间多次波预测的计算成本;同时该方法为全数据驱动方法,无需地下介质任何先验信息,算法容易实现.模型数据测试表明,本文提出的方法可有效压制层间多次波,而且对有效波也具有很好的保幅性.