岩浆流体对冲绳海槽海底成矿热水系统的可能贡献

海底火山活动区成矿热液流体来源长期存在争议,尽管海水来源说更为流行,但本文提供的下列证据表明,来自长曲质岩浆的流体对冲绳海槽现代活动热水成矿系统有较大贡献：（１）冲绳海槽ＪＡＤＥ热水区出现异常高热流,其下方１￣２ｋｍ处存在浅位长英质岩浆房;（２）ＣＯ２、烃类、Ｈ２等气体在热水成矿体系中极度富集甚至形成独立气流,与热水流体共存。气体的碳、氦同位素资料表明其来自长英质岩浆本系;（３）ＪＡＤＥ成矿热水系     

南海东北部叶绿素a浓度对台风“风泵”和黑潮共同作用的响应

南海东北部是寡营养海域,夏季浮游植物叶绿素浓度较低,热带气旋"风泵"效应带来的上层海洋扰动可能引起表层浮游植物的显著增长。以往的研究通常关注热带气旋风应力和海洋中尺度涡对上层海洋浮游植物的影响,本文利用航次CTD、实测叶绿素a浓度、Argo温盐剖面和遥感数据,探讨了台风"风泵"和黑潮共同作用下真光层内浮游植物的变化特征及其成因。结果表明,2015年台风"莲花"过境1周后产生向吕宋海峡西北侧南海海域(A区)入侵的黑潮流套,该入侵的黑潮流套使台风前原有的气旋涡消失,抑制了台风产生的上升流对表层(0～40 m)营养盐供给,使次表层(60～90 m)营养盐富集,进而抑制了表层的叶绿素a增长,促进了次表层叶绿素a的增长;吕宋海峡西侧南海海域(B区)表层的浮游植物叶绿素a浓度增加不仅是源于叶绿素最大层浮游植物的向上输运,更是由于浮游植物的繁殖增长;A区台风引起的流套式的黑潮入侵,促进了B区台风后气旋式流场的形成,产生的持续增强的气旋涡为B区表层叶绿素持续增长提供了充足的营养盐供给。     

我国市县地球物理监测资源评估

我国地球物理监测站网主要由GNSS、定点形变、重力、地电、地磁、地下流体六大观测站网组成,由国家站、省级站和市县站构成基本监测单元。市县站观测手段多、站点数量庞大,是地球物理监测站网的重要组成部分。为摸清市县站监测资源底数、统筹利用市县监测数据,中国地震局历时2年完成了我国市县地震监测资源评估工作。基于此项工作,本文从观测环境、观测系统、数据质量和预报应用四个方面对我国市县地球物理监测资源进行简要分析,评估结果显示: 37.8%的测项评估为合格,可直接纳入国家地球物理数据库管理,47.9%的测项评估为基本合格,可纳入国家市县数据库管理,14.3%的测项评估为不合格,需要停测或者优化改造。针对评估结果,简要分析了市县监测运维工作存在的主要问题并提出具体可行的解决建议,为提升市县站监测质量提供参考。     

西藏地堡那木岗矿区水系沉积物地球化学特征及找矿预测

利用SPSS等软件对矿区1：5万水系沉积物地球化学数据分析,选用平均值±3倍标准差（X±3S）作为上下限反复剔除原始数据的特值,使元素含量服从正态分布.最后以X+2S作为异常下限（T）,以1T、2T、4T三级浓度分带,圈定Cu、Au、Ag、Mo单元素异常和Au-Ag-Mo综合元素异常,揭示矿区内水系沉积物地球化学异常特征.将异常区与矿区地质特征、矿床（点）套合分析,表明异常受地层、断裂、围岩蚀变控制,对寻找矿（化）体、断层、围岩蚀变带有指示作用.最终,优选2处远景区,分别为3号综合异常区中心北北西方向至北东向断裂附近,1号、2号综合异常区及其东侧组成一个走向为东西向的异常带.     

Thermal and tectonic evolution of the southern Alps (northern Italy) rifting: Coupled organic matter maturity analysis and thermokinematic modeling

The Pearl River Mouth Basin (PRMB) is one of the most petroliferous basins on the northern margin of the South China Sea. Knowledge of the thermal history of the PRMB is significant for understanding its tectonic evolution and for unraveling its poorly studied source-rock maturation history. Our investigations in this study are based on apatite fission-track (AFT) thermochronology analysis of 12 cutting samples from 4 boreholes. Both AFT ages and length data suggested that the PRMB has experienced quite complicated thermal evolution. Thermal history modeling results unraveled four successive events of heating separated by three stages of cooling since the early Middle Eocene. The cooling events occurred approximately in the Late Eocene, early Oligocene, and the Late Miocene, possibly attributed to the Zhuqiong II Event, Nanhai Event, and Dongsha Event, respectively. The erosion amount during the first cooling stage is roughly estimated to be about 455–712 m, with an erosion rate of 0.08–0.12 mm/a. The second erosion-driven cooling is stronger than the first one, with an erosion amount of about 747–814 m and an erosion rate between about 0.13–0.21 mm/a. The erosion amount calculated related to the third cooling event varies from 800 m to 3419 m, which is speculative due to the possible influence of the magmatic activity.     

利用高分辨率TerraSAR-X影像监测唐山矿地面沉降

利用2012-12~2014-02获取的13景高分辨率TerraSAR-X影像,采用PSI时序分析技术监测唐山矿地面沉降。该技术以短时空基线为准则生成47幅差分干涉图,选择强度稳定性和频谱相干性较高的相干目标进行时间序列分析,基于最小二乘法获取唐山矿区域相干目标的地面下沉速率和沉降时间序列。结果表明,唐山矿有两个地面沉降中心,分别位于矿区东北和西部方向,最大沉降速率达58.2 mm/a;2013-06~09矿区出现回弹现象,而在其他时间段内地面呈近似线性下沉。通过对比高程误差改正前后的直方图可以发现,本文采用的两次回归分析方法对降低地形残余误差有很好的应用效果。     

Localization and dynamic expression of a 27.8 kDa receptor protein for lymphocystis disease virus infection in sea bass (<Emphasis Type="Italic">Lateolabrax japonicus</Emphasis>) tissues

Lymphocystis disease virus (LCDV) infects target cells by attaching to a 27.8 kDa receptor (27.8R) protein in flounder Paralichthys olivaceus, and anti-27.8R monoclonal antibodies (MAbs) have been developed. However, the 27.8R existence in tissues of sea bass (Lateolabrax japonicus) and its role in LCDV infection have remained unclear. In this study, the results of western blotting demonstrated that the same 27.8R was shared by flounder and sea bass. LCDV-free sea bass individuals were intramuscularly injected with LCDV, and viral copies were detected in tissues from 3 h post infection and showed a time-dependent increase during 9 days infection. Distribution and synthesis of 27.8R in sea bass tissues were investigated by using anti-27.8R MAbs as probes. It was found that 27.8R was distributed in all the tested tissues. The levels of 27.8R protein were highest in gill and skin, then a bit lowly in stomach, head kidney and heart, followed by spleen, intestine, blood cells, gonad and liver, and least in kidney and brain in healthy sea bass. Upon LCDV infection, 27.8R synthesis was up-regulated in each tissue, and higher in the tissues with higher LCDV copies. The 27.8R and LCDV were detected in some peripheral blood leukocytes but not in red blood cells. These results suggested that 27.8R was widely distributed in sea bass tissues, and it served as a receptor and correlated with tissue tropism of LCDV infection. Furthermore, leukocytes had the potential of being a LCDV carrier and were responsible for a systemic infection of LCDV in sea bass.     

全球纬向平均的海气耦合一维模式分析

本文从能量平衡角度,考虑海气相互作用和纬向间的差异,设计了一个纬向平均的海气耦合一维模式,进行了模式平衡态求解、敏感性试验以及随机分析。并对模式部分计算结果进行了与实测资料的比较,验证了模式的合理性和可信性。     

Subsurface flow processes in sloping cropland of purple soil

Subsurface flow is a prominent runoff process in sloping lands of purple soil in the upper Yangtze River basin.However,it remains difficult to identify and quantify.In this study,in situ runoff experimental plots were used to measure soil moisture dynamics using an array of time domain reflectometry(TDR) together with overland flow and subsurface flow using isolated collecting troughs.Frequency of preferential flow during rainfall events and the controls of subsurface flow processes were investigated through combined analysis of soil properties,topography,rainfall intensity,initial wetness,and tillage.Results showed that subsurface flow was ubiquitous in purple soil profiles due to welldeveloped macropores,especially in surface soils while frequency of preferential flow occurrence was very low(only 2 cases in plot C) during all 22 rainfall events.Dry antecedent moisture conditions promoted the occurrence of preferential flow.However,consecutive real-time monitoring of soil moisture at different depths and various slope positions implied the possible occurrence of multiple subsurface lateral flows during intensive storms.Rainfall intensity,tillage operation,and soil properties were recognized as main controls of subsurface flow in the study area,which allows the optimization of management practices for alleviating adverse environmental effects of subsurface flow in the region.     

Molecular identification and culture observation on <Emphasis Type="Italic">Acrochaete leptochaete</Emphasis> (Chaetophoraceae,Chlorophyta) from China

Acrochaete leptochaete (Huber) Nielsen (Chaetophoraceae, Chlorophyta) was isolated from the macroalgae Chaetomorpha collected from intertidal pools in Rongcheng, Shandong, China. 18S rDNA combined with ITS regions were used to ascertain the morphological identification of the isolated material. Based on the unialgal culture, asexual reproduction and growth characteristics of A. leptochaete were investigated over wide ranges of temperature and irradiance. Results revealed that asexual reproduction of A. leptochaete could be realized by biflagellate zoospores. The zoospores germinated directly to give self- replicating generations. Zoospore germination was bipolar. A temperature range from 13-21°C and a lower irradiance of 36 μmol/(m2·s) were most favorable for the growth of A. leptochaete. Thallus organization, an important taxonomic criterion for the genus Acrochaete, was affected markedly by temperature and irradiance. Our results extend the knowledge about the species’ general biology and its morphological plasticity. For classification and identification of a simple microphytic algae like A. leptochaete, which are traditionally placed in the class Chaetophoraceae, we propose that molecular tools associated with culture observations are applied.