广西天气预报视频会商系统网管软件的操作及常见问题诊断

简要介绍广西天气预报视频会商系统中心控制平台的基本操作方法,并针对在业务运行中出现的常见故障,进行原因分析,并找出解决方法。     

Live benthic foraminiferal faunas off Cape Blanc, NW-Africa: Community structure and microhabitats

Live (Rose-Vengal stained) benthic foraminifera were studied along a transect across the main area of organic matter deposition in the Cape Blanc upwelling region. The faunal analyses suggest that at the shallowest station (1200 m) the benthic ecosystem is permanently influenced by the upwelling, whereas at the deepest stations (3010 and 2530 m depth) the ocean bottom is subject to significant organic influxes only in summer. The vertical zonation of foraminiferal species in the sediment shows a close correspondence with the depth distribution of oxic respiration, nitrate and sulphate reduction. It is suggested that this linkage is caused by the presence of various stocks of anaerobic and sulphate- and nitrate-reducing bacteria. Deep infaunal foraminiferal species are thought to feed selectively, either on the bacterial stocks or on nutritious particles produced by bacterial degradation of more refractory organic matter. As such, foraminiferal microhabitats are only indirectly controlled by pore water oxygen concentrations.     

胶州湾东北侧岩芯分析

胶州湾是海岸带研究及开发利用的热点之一,已做过大量工作(包含钻探工作),但深入的总结不足。1994年作者对胶州湾东北侧海底和海滩进行了详细钻探,获得了丰富资料。本文作一简要分析。钻探共4个剖面35个钻孔,其中11个孔位于陆域(图1)。大部分钻孔揭穿第四系至基岩强风化层,终孔直径110mm。1　岩性分析综观岩芯,自上至下,由新到老大体划分如下几层,见表1。杂填土　主要分布在近岸,厚约0.00～3.60m,层底标高-0.07～2.95m,主要由城市垃圾和建筑垃圾组成,堆积时间短,结构松散。淤泥　层厚0.80～3.50m,自岸向海逐渐增厚,层底标高-0.23～5.30m,灰…     

海域使用项目宗海图编绘前期分析方法探讨

宗海图的绘制水平和质量在海域使用论证工作与海洋资源管理工作中极其重要。文章总结宗海图绘制工作的经验以及常见的质量问题,提出项目用海工程概况分析是项目海域使用可行性分析的重要依据,更是宗海图绘制的前置条件;通过项目工程资料概况分析,项目符合性分析,现状用海资料、周边确权资料收集和分析3个方面,凝练宗海图编绘前期分析的主要技术方法。     

三个进入江西的台风路径和暴雨形成机制对比分析

2006年7月14日—8月11日,“碧利斯”、“格美”、“桑美”3个台风先后进入江西,均产生了较强的区域性暴雨或大暴雨。利用常规资料和T213资料,对这3个台风的移动路径和暴雨形成机制进行了对比分析。分析结果表明,台风登陆后,由于副高形态和演变的不同,使得各台风路径变化不同。由于“碧利斯”登陆后与强西南季风结合,造成“碧利斯”暴雨的水汽、动力、热力条件均强于“格美”和“桑美”,从而使“碧利斯”暴雨的强度和范围明显强于“格美”和“桑美”。     

气象用GX-2型水电解制氢设备电解电压的分析

分别从温度,压力,电解质以及电解液浓度等方面因素在水电解过程中对电解电压的影响进行分析,并在实际工作加以应用,从而达到降低能耗,节约成本的目的。     

Middle carboniferous marine transgression,Bjørnøya,Svalbard: facies sequences from an interplay of sea level changes and tectonics

The Svalbard Platform, in middle Carboniferous time, was dominated by a series of NNW-SSE oriented, asymmetric rift basins. The Landnørdingsvika Formation represents the infill of one such basin in the Bjørnøya (Bear Island) area and consists of red beds deposited during a regional rise of sea level. The basin was filled mainly from the west and southwest across a Carboniferous fault zone, the West Bjørnøya. Fault, which bounded the deep edge of the basin. The basin succession is dominated by floodplain and coastal plain deposits in its lower part and fanglomerates interbedded with shallow marine clastics and carbonates in its upper part. The marine facies gradually increase in volume upwards and culminate in the overlying, carbonate-dominated Kapp Kåre Formation (Moscovian). This continental-marine transition, which has also been identified in the other Svalbard basins, thus reflects an important middie-late Palaeozoic transgression. Analysis of the facies sequences shows that there are repeated submergence-emergence events which are superimposed on the longer term transition. These are interpreted in terms of repeated basin floor tilting and sinking against the upland block.     

Assessing socio-economic impacts of wave overtopping: An institutional perspective

One way to address the assessment of strategies to control wave overtopping at seawalls and related coastal defence structures is to make use of Cost-Benefit Analysis. The institutional context in which Cost-Benefit Analysis takes place influences decisions on the types of values that are taken into consideration and the subsequent selection of valuation methods. We suggest to consider Cost-Benefit Analysis in a broad institutional framework when decisions are to be made on coastal defence strategies. It is argued that the institutional context provides the rules of the game on how a balance can be found between social, economic and ecologic functions of projects that protect societies against overtopping.     

昌黎黄金海岸沙丘动态变化及动因解析

利用多年实地观测数据,并结合多期遥感影像解译结果.系统分析了昌黎黄金海岸沙丘典犁地段的动态变化特征及其动因,结果表明:在盛行风作用下,受物源减少、植被固定和人为扰动等诸多因素影响.沿岸沙丘在整体向陆移动的背景下,移动距离由小到大依次为沙丘中段,北段、南段;沙丘迁移速度渐缓,由3.04 m/a减小到2.07 m/a;沙丘高度逐年降低,除个别年份高度呈现正增长外,其他年份均为负增长;沙丘向海坡坡度、背海坡坡度均减小,向海坡坡度变化更为明显.     

The German Bight (North Sea) is a nursery area for both locally and externally produced sprat juveniles

To better understand the role of the German Bight (GB) as a nursery area for juvenile North Sea sprat Sprattus sprattus we sought to determine whether the area may receive only locally or also externally produced offspring. We sampled juveniles during 3 trawl surveys in the GB in August, September, and October 2004 and applied otolith microstructure analysis in order to reconstruct their distributions of the day-of-first-increment-formation (dif). These were contrasted with spatial and seasonal patterns of sprat egg abundance in the GB and its adjacent areas, observed during 6 monthly plankton surveys. It was found that the majority of juveniles originated mainly from April/May 2004, coinciding with high spawning activity west of the GB, whereas spawning and larval production inside the GB peaked notably later, in May/June. This indicated that a large proportion of juveniles was produced outside the GB and transported subsequently into it through passive and/or active migration. Shifts to later mean difs from one survey to the next and length distributions indicative of the simultaneous presence of multiple cohorts, supported the notion that the GB is a complex retention and nursery area for sprat offspring from different North Sea spawning grounds and times. Later born juveniles had significantly faster initial growth rates than earlier born conspecifics, which was likely temperature-mediated, given the strong correlation between back-calculated growth histories and sea surface temperature as a proxy for thermal histories of juveniles (r² = 0.52).