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海洋观测预报业务多源异构数据与信息集成分析 总被引：2，自引：0，他引：2
海洋观测预报数据信息是地方经济建设和社会发展重要基础数据之一,由于其数据源与信息源分布于多个不同网络中,且存储与展示形式各异,一直难以被统一集成和很好地应用。从分析海洋观测预报业务数据源与信息源入手,应用目前成熟的网络技术和数据库技术,对海洋观测预报数据信息集成中的若干问题进行深入研究,从而提出并实践了从网络集成、数据集成、知识集成到应用集成的一整套海洋观测预报数据集成的技术框架和方法体系,继而开展基于多源异构数据与信息集成的海洋观测预报服务系统研究,为海洋观测预报数据信息集成的实践过程提供方法支持。 相似文献
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2001年8月至2002年7月,对厦门岛东海岸黄厝沙滩底栖甲藻的种类组成和优势种的时空分布进行了为每月一次的调查,共鉴定甲藻种类46种,其中底栖种39种,常见种14种,优势种4种.Amphidinium britannicum和Adenoides sp.为冬春季优势种,Herdmania litoraris和Peri-dinium quinquecorne为夏秋优势种,优势种的季节更替比较明显.夏秋季节的种数多,冬春季节的种数少,细胞数量高峰出现在春夏季,秋冬两季数量很少,由夏季的200多个每克干沙减少到冬末的0~4个/g干沙;多样性指数和均匀度呈双峰型分布,峰值出现在10和2月,谷值出现在12月和7月.空间分布上,底栖甲藻的总细胞密度和优势种的细胞密度呈现由高潮带向中、低潮带增加的趋势.分析了影响厦门东海岸沙滩底栖甲藻时空分布的主要因素,并探讨了沙滩底栖甲藻与近岸赤潮及着色砂现象的关系. 相似文献
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《中国海洋大学学报(自然科学版)》2021,(11)
海洋现象特征数据是一类带有过程性质的时空数据,具有多样性、多态性、海量性和时变性等特点,广泛服务于海洋灾害预报、船舶航行规划、台风路径追踪、海洋与大气环流等领域。本文根据海洋现象特征,建立海洋现象过程的对象表达和数据组织模型,设计三维空间海洋时空数据分片策略和R树空间数据索引方法,以提高海洋现象过程时空数据的查询效率。实验通过构建海洋现象过程时空数据分布式存储与并行检索系统测试算法的执行效率。实验结果表明,面向过程的海洋时空数据分布式并行检索算法能够实现数据的高效检索,验证了海洋现象过程对象数据组织模型的合理性,为研究海洋现象过程多要素的关联机制提供了有效的方法和理论基础。 相似文献
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面对多源异构的海量数据的集成,传统的集成方法和技术无法实现,直到大数据技术的出现才有了可能.应用大数据技术实现多源异构的海洋环境监测数据集成,有利于海洋环境监测数据的共享,避免信息孤岛的出现,同时为数据的分析、挖掘等提供了所需的数据.文中重点讨论了基于大数据和数据虚拟化平台技术,参照ODM2信息模型和MMI ORR本体语义框架来实现多源异构的海洋环境监测数据的集成问题,并在数据集成的基础上,探讨了多源异构数据查询、综合展示应用的实现方法.此研究有利于解决海量海洋环境监测数据管理难题、满足海洋环境科研工作者的大数据需求、实现数据驱动决策、提升海洋环境管理水平. 相似文献
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目前,海洋观测领域的观测系统由不同机构,采用不同技术和研发平台进行开发,由此带来了传感器设备接入、系统架构差异、数据格式不统一和系统集成困难等问题。为了解决以上问题,本文提出一种新的海洋观测复杂虚拟仪器云服务模型。根据该模型开发的海洋观测系统可以实现功能的自由定制,并可对异构环境下的海洋观测系统进行无缝集成。并针对系统集成后造成的响应时间下降问题,提出多组件副本自适应算法。通过对海洋观测系统的实际开发、集成、应用与理论分析,对该模型进行了验证。结果表明,该模型有效可行,实现了异构系统的集成,提高了系统开发效率,对海洋观测系统的大规模集成有着重要意义。 相似文献
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《Marine Policy》2014
Sustainable development depends on maintaining ecosystem services which are concentrated in coastal marine and estuarine ecosystems. Analyses of the science needed to manage human uses of ecosystem services have concentrated on terrestrial ecosystems. Our focus is on the provision of multidisciplinary data needed to inform adaptive, ecosystem-based approaches (EBAs) for maintaining coastal ecosystem services based on comparative ecosystem analyses. Key indicators of pressures on coastal ecosystems, ecosystem states and the impacts of changes in states on services are identified for monitoring and analysis at a global coastal network of sentinel sites nested in the ocean-climate observing system. Biodiversity is targeted as the “master” indicator because of its importance to a broad spectrum of services. Ultimately, successful implementation of EBAs will depend on establishing integrated, holistic approaches to ocean governance that oversee the development of integrated, operational ocean observing systems based on the data and information requirements specified by a broad spectrum of stakeholders for sustainable development. Sustained engagement of such a spectrum of stakeholders on a global scale is not feasible. The global coastal network will need to be customized locally and regionally based on priorities established by stakeholders in their respective regions. The E.U. Marine Strategy Framework Directive and the U.S. Recommendations of the Interagency Ocean Policy Task Force are important examples of emerging regional scale approaches. The effectiveness of these policies will depend on the co-evolution of ocean policy and the observing system under the auspices of integrated ocean governance. 相似文献
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海岸带自然资源价值评估的研究现状与趋势 总被引：6，自引：2，他引：6
海岸带生态系统服务和资源价值评估是海岸带国民经济核算体系的基础，是实现海岸带资源优化配置和海岸带综合管理的重要环节。本文从资源价值观、评估方法和应用研究等方面，评述了国内外近20年来对海岸带生态系统服务和资源价值评估研究现状，分析了目前研究存在的难点和不足以及主要研究趋向。指出海岸带生态系统服务和资源价值的发生机理研究、区域异质性研究、建立和完善价值估算的数据库体系、建立为海岸带综合管理服务的生态-经济-环境综合核算体系是今后相关研究中亟待解决的重点问题。 相似文献
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《Marine Policy》2016
In a global context of promotion and expansion of blue growth initiatives, the development of activities such as aquaculture calls for the assessment of the potential impacts on biodiversity at different levels and associated services. This paper presents an assessment of the potential impact of the installation of seaweed farms on ecosystem services and the induced compensation costs. Biophysical and socioeconomic indicators have been developed for helping decision makers to select the most suitable locations. The approach considers a multi-criteria approach based on Geographical Information Systems (GIS) and Habitat Equivalency Analysis (HEA). The former is used to obtain biophysical ecosystem services and socioeconomic indicators and the latter to evaluate the costs required to compensate the loss of cultural and provisioning ecosystem services. A case-study in the Normand-Breton (Saint Malo) Gulf, France, illustrates this method through the analysis of hypothetical locations of seaweed farms. Results highlight the differences between alternative locations regarding biophysical constraints (in terms of distance and depth), potential risks of conflicts with existing uses, impacts on habitats and the ecosystem services delivered, and compensation costs. This case-study illustrates the flexibility of this approach which can be further adapted to include other indicators in order to deliver integrated information to coastal planners. 相似文献
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Terry A. Nelsen 《Marine Chemistry》1978,6(4):343-349
Fluctuations in scanning electron microscope (SEM) beam current necessitate normalization of energy-dispersive analysis (EDA) data collected in conjunction with the SEM. A normalization method based on monitoring the total integrated count of a stainless-steel reference before and after sample counting was developed and yielded high precision (correlation coefficient = 0.996) data from a 48-sample testing set. The technique is independent of sample composition, counting time, time between sample analyses, magnification during analysis, and requires no modification to the basic SEM—EDA system. 相似文献
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《Deep Sea Research Part II: Topical Studies in Oceanography》1999,46(8-9):1933-1964
The relationship between physical forcing and biological response observed in the Arabian Sea for the years 1978–1986 were examined. Spatial and temporal patterns of variability in a climatological time-series of three possible physical forcing parameters and CZCS-derived phytoplankton pigment concentration during the annual cycle were quantified using single and joint empirical orthogonal function (EOF) and singular-value decomposition (SVD) analyses. Monthly composites of the NASA regional pigment data were interpolated to fill data voids and binned corresponding to the physical flux data. Nearly all the spatial-temporal analyses consistently partitioned a large portion of the variability using only 1 or 2 dominant modes and indicated a lag in the timing of the peak pigment concentration behind the maxima in physical forcing. In all cases, major modes of variability resembled the Southwest Monsoon pattern, with the Northeast Monsoon contributing very little to the total variance and covariance. The Joint EOF and SVD analyses incorporated subtle features surrounding the peak Southwest Monsoon phenomena. Correlation maps of the joint EOF analysis depicted differences in spatial variability of pigment concentration associated with stress and curl, showing areas of curl-driven upwelling distinct from coastal upwelling, with possible off-shore advection of the curl-induced high pigment waters. 相似文献
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为促进海南游艇旅游转型升级与空间布局优化，推动海南海洋经济高质量可持续发展，本文基于2013年、2017年、2021年海南游艇俱乐部、游艇会及游艇码头数据，利用标准差椭圆分析、平均最近邻指数、核密度分析、重心迁移模型对海南游艇旅游的时空演化特征进行研究，并利用近邻分析法、相关性分析法和政策文本分析法，从旅游资源禀赋、自然地理环境、区位交通条件、政策保障机制等四个维度剖析和阐释海南游艇旅游时空演化特征的影响因素。研究发现：（1）海南游艇旅游核心场所持续增加;（2）海南游艇旅游发展呈显著的空间聚集特征，聚集程度先上升后下降;（3）海南游艇旅游呈东北-西南走向迁移布局;（4）海南游艇旅游模式逐渐由“三亚-海口双核心”向“三亚单核心”演变;（5）自然地理环境和旅游资源禀赋是影响海南游艇旅游时空格局形成的基础性因素，区位交通条件是其时空演化特征的驱动性因素，政策支持是其时空演化形态的导向性因素。最后，对海南游艇旅游可持续发展提出四个方面的对策建议，以积极推动具有世界影响力的中国特色自由贸易港建设。 相似文献