共查询到19条相似文献,搜索用时 46 毫秒
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宋建忠 《科技导报(北京)》2024,42(14):48-60
梳理了国外深海考古发展情况,介绍了中国深海考古的发展历程。从2018年4月西沙北礁海域深海考古调查,到2022年8月西沙海槽深海考古调查,再到2023年5月南海西北陆坡一号、二号沉船深海考古调查,中国深海考古经历了从零的突破,到沉船遗物集中发现,再到古代沉船重大发现的3个阶段。中国深海科学与技术在人文科学领域的应用使中国的深海考古迅速达到世界先进水平。提出3点建议:尽快完成南海西北陆坡一号、二号沉船考古调查与综合评估,为该沉船遗址后续的研究、保护、阐释和利用提供重要依据;根据初步形成的深海考古调查技术、方法与流程,未来有计划、有目标地对已发现水下文化遗存较多的礁盘周边海域和古代重要航线节点海域开展系统的区域调查;结合南海西北陆坡一号、二号沉船遗址,进一步开展中国深海考古专用技术与装备的研发。 相似文献
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渔业捕捞及商业航运活动的塑料排放是南海深海塑料污染的主要来源.南海深海微塑料污染始于20世纪80年代,具有明显陆源输入的特征,陆架近岸区域微塑料污染严重.陆坡深海峡谷是塑料/微塑料向深海盆地输运的主要通道,近底浊流在输运中发挥了重要作用.综述了南海海底塑料垃圾深潜研究的最新进展,首次提出了深海塑料垃圾生态系统的概念. 相似文献
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“蛟龙号”载人潜水器的成功研制使中国的载人深潜技术实现了跨越式发展,进入了世界载人深潜“高技术俱乐部”。“蛟龙号”的应用使中国的深海科学研究也取得了高速的发展,对促进中国深海高新技术产业形成和发展也具有重要的带动、辐射和示范作用。介绍了“蛟龙号”载人潜水器的研制情况以及它对海洋科技的推动作用,展望了中国海洋领域的未来发展趋势。 相似文献
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近年来依托于高科技所产生的新媒体艺术逐渐成为了一种大众艺术,它与传统艺术不同,新媒体艺术具有鲜明的特点,它是一种以光学、电子媒介为基本语言的新艺术门类,与时俱进对于新媒体艺术的发展有重要作用,科技的进步与发展将为新媒体艺术带来宽广的前景。同时,技术与艺术的融合也必将使该艺术门类达到突破。 相似文献
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当新的技术使探索新的空间成为可能,由此也会引发一系列新的科学问题。在这次海试暴露的一些有待改进的问题中,海参之死是其中的一个例子。2012年6月30日,"蛟龙"号最终完成了7000米级的所有海试。本次海试共进行了6次下潜试验,有3次下潜深度超过了7000米,最大下潜深度达到7062米。海试团队对潜水器的各项功能逐一进行验证,并进行了一系列的深海调查作业, 相似文献
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按照规定的任务,在深海自动巡航的探查机器人“浦岛号”2005年2月完成性能试验。它在56小时内连续航行317公里,一举创下世界纪录。 相似文献
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朱永灵;顾春华;高威 《中南大学学报(自然科学版)》2011,42(S2):21
针对目前我国科学考察船的实验室和调查设备较为落后,根据多年从事大洋科考经验,从海洋科学的角度梳理出未来建造深海综合科学考察船所需的能力建设,提出大气探测系统、水体探测系统、海底探测和采样系统、辅助支撑四大能力系统,同时,这四大能力系统也涵盖了所需实验室和调查设备的装备,从而为未来建造深海综合科学考察船提供借鉴。 相似文献
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SUNXiangjun LUOYunli CHENHuaicheng 《科学通报(英文版)》2003,48(20):2155-2164
This paper briefly presents the progress of deep-sea pollen research in China since the beginning of ninetieths of the last Century. All the deep-sea pollen contri-butions mainly come from the South China Sea (SCS) and the East China Sea (ECS). The German-Chinese joint cruise (Sonne 95) and ODP 184 cruise initiated by Chinese scientists in the SCS provided excellent material for the deep-sea pollen research. So far a number of pollen results of 20-30 ka and million years from the SCS have been published. A couple of deep-sea pollen records from Okinawa Through of the ECS also came out. The high resolution pollen records obtained from the continuous deposits with high sedimentation rates and reliable age control of the deep-sea sediments provided a high time resolution history (hundred to millennial scales) of vegetation, environment and monsoon evolution of the pollen source areas (southern China and Japan). Spectral analysis of deep-sea pollen records from the SCS discovered orbital (100, 41, 23, 10 ka) and suborbital cyclicities(Heinrich and Dansgaard/Oscheger-O/D events) in the vegetation changes. Moreover, cross spectral analysis showed that the trend of vegetation changes in northern SCS was regulated mainly by changes of the ice volume in the Northern Hemisphere. The pollen record of the last 20 ka from the Okinawa Through of the ECS indicates that the marine environmental change lagged that on the terrestrail by about 1000 year. The asynchronous environmental changes between land and sea were probably caused by the time difference in thermohaline circulation. This study underscored the role of the deep-sea plant fossils as a bridge across the land and sea. 相似文献
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南海表面海温异常对南海季风影响的数值模拟 总被引:6,自引:0,他引:6
采用P-σ混合坐标系区域气候模式模拟了4-7月南海季风的爆发、演变过程,并进行了3组敏感性数值试验,研究南海表面海温异常对南海季风的影响,得到以下结论:(1)南海4月份海温异常对南海季风的爆发日期影响不大,但对季风爆发后的强度有所影响,异常增温造成南海季风增强,异常降温则南海季风减弱。(2)南海季风爆发和强度的变化与南海本身的海温变化情况有密切的关系,尤其是5月份南海海温异常。5月份南海异常增温可以使南海季风提前爆发,季风增强,南海海温异常降低时,南海季风爆发的时间推迟,季风减弱。(3)南海海温持续异常可以影响南海及中国大陆的高低空环流变化,海温持续异常增温可以使南海季风提前爆发,显地加强南海季风,并有利于南海季风向北推进,但当海温在6月份进一步持续增温时,则有利于季风维持在较南地区,阻碍季风向北发展;当海温持续异常降低时,南海季风推迟爆发,且明显减弱。 相似文献
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WANGPinxian JIANZhimin ZHAOQuanhong LIQianyu WANGRujian LIUZhifei WUGuoxuan SHAOLei WANGJiliang HUANGBaoqi FANGDianyong TIANJun LIJianru LIXianhua WEIGangjian SUNXiangjun LUOYunli SUXin MAOShaozhi CHENMuhong 《科学通报(英文版)》2003,48(23):2549-2561
As the third summary report of ODP Leg 184 to the South China Sea (SCS), this paper discusses the evolution of the East Asian monsoon and the SCS basin. A multi-proxy approach, involving geochemistry, micropale-ontology, pollen and other analyses, was adopted for reconstructing the evolutionary history of the East Asian monsoon, which was characterized by a series of paleo-climate events especially at 8, 3.2, 2.2 and 0.4 Ma. The new record indicates similar stages in the development of the East and South Asian monsoons, with an enhanced winter monsoon over East Asia being the major difference. The rich spectrums of monsoon variability from the southern SCS also reveal other characteristic features of the low latitude ocean. Evidence for the evolution of the SCS includes the hemipelagic Oligocene sediments, implying the existence of deep water environments during the early seafloor spreading stage of the SCS basin. The four major unconformities and some remarkabl ediagenetic features in upper Oligocene deposits indicate the strongest tectonic events in the region. From a careful comparison of lithologies and sedimentation rates, we conclude that the prominent differences in sedimentary environments between the southern and northern SCS were established only by ~3 Ma. 相似文献
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南海海底特征、资源区位与疆界断续线 总被引:9,自引:0,他引:9
根据南海海底的成因与地形特征 ,并通过建立和分析南海海底数字地形模型 ,将南海的海底分为中央的深海盆地、两侧的阶梯状大陆坡、以及周边亚洲大陆延伸的大陆架 3个地貌单元 .再据 194 7年“南海诸岛位置图”精确计算出二战后依据波茨坦公告为国际认可的断续线疆界的经纬度坐标 ,阐述了中国对南海主权的历史延续性 .最后 ,论述了南海区位与资源的优势 ,论证了其海域具体位置与巨大的经济政治战略意义 . 相似文献
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【目的】探明海洋工程材料在热带海洋环境试验站硅藻污损群落的组成变化,为研究该海域材料腐蚀、生物污损以及生物多样性提供参考。【方法】取4种材料进行全浸腐蚀试验,定期取出试片冷藏客运到青岛,用次氯酸钠法制成永久封片,在带有微分干涉显微镜下记数,并使用PRIMER 6对硅藻Shannon多样性指数、Pielou’s均匀度指数和Simpson优势度进行计算。【结果】检出污损硅藻16目24科30属61种,其中双眉藻属、菱形藻属和舟形藻属为优势类群;物种多样性指数随时间而增加;热浸锌表面硅藻群落结构变化与其他3种材料有所不同。【结论】在南海热带近岸,材料表面性质对其表面附着的污损硅藻群落有一定影响,其中锌离子的影响较为明显。 相似文献
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Tracing the life history of a marginal sea—On “The South China Sea Deep” Research Program 总被引:1,自引:0,他引:1
PinXian Wang 《科学通报(英文版)》2012,57(24):3093-3114
The Major Research Program "Deep Sea Processes and Evolution of the South China Sea", or "The South China Sea Deep", launched in January 2011 by the National Natural Science Foundation of China, is the first large-scale basic-research program in ocean science in the country aiming to reconstruct the life history of a marginal sea. The overall scientific objective of the program is to dissect this typical marginal sea by studying its history of evolution and its modern processes, including the following three major components:(1) Development of the deep basin:utilizing new techniques to re-measure magnetic anomaly lineations, to explore the deep tectonic features, to drill the oceanic crust, and to study volcanic seamount chains; (2) deep-water sediments: observing the modern processes to reveal the patterns of deep-water circulations and sedimentation, analyzing deep-sea sediments to recognize paleoceanographic response to basin evolution, and subsequently to bridge the modern and paleo-studies of the deep-sea processes; and (3) biogeochemical processes:using a variety of techniques including deploying submarine observation and deep-water diving device to investigate the distribution patterns and environmental impacts of deepwater seepages and sub-bottom circulation, and to reveal the role of microbes in deep-sea carbon cycling. As compared with the open ocean and other marginal seas, the South China Sea enjoys many more advantages as a marine basin for reconstructing the life history. Meanwhile, the South China Sea Deep Program provides unique opportunities in studying the evolution and variations of the sea-land interactions between the Pacific and Asia. 相似文献
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工作与生活的平衡是科技创新人才人力资源开发不可回避的重要课题。中国式EAP丰富了人力资源管理的时代内涵,开辟了工作与生活平衡的崭新视角,具有发展等直接功能和凝聚等间接功能,通过EAP的价值激励、成长激励、减压激励和人文激励,能形成促进科技创新人才工作生活平衡的内在长效机制。 相似文献
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南海东部深海沉积物中孢粉与古环境研究 总被引:8,自引:0,他引:8
张玉兰 《同济大学学报(自然科学版)》2003,31(5):554-557,609
通过对南海东部294站深海柱状剖面高分辨孢粉、藻类的研究,将294站从下至上划分为7个孢粉组合带,依次为:Ⅰ带:Dacrydium-Pinus-Lithocarpus-Quercus(带绿)-Cyathea-Polypoldiace;Ⅱ带:Castanopsis-Lithocarpus-Dacrydium-Quercus(常绿)-Pinus-Polypodiace;Ⅲ带:Quercus(常绿)-Castanopsis-Podocarpus-Polypodiaceae;Ⅳ带:Polypodiaceae-Cyathea-Pteris-Pinus-Gramineae;Ⅴ带:Quercus(常绿)-Podocarpus-Lithocarpus-Cyathea-Polypodiaceae;Ⅵ带:Pinus-Quercus(常绿)-Palmae-Mangrove pollen-Gramineae;Ⅶ带:Dacrydium-Palmae-Mangrove Pollen-Pinus-Cyperaceae-Cyathea.并相应恢复了南海东部地区12万年以来5个植被、气候演替阶段,依次为:炎热、湿润的热带季雨林——暖热而稍干的热带北缘半常绿季雨林——炎热、湿润的热带季雨林——暖热而稍干的热带北缘半常绿季雨林——炎热、湿润的热带季雨林。结合氧同位素测年资料,对294站地层时代划分作了讨论,为南海古气候、古环境演变研究提供了科学的证据。 相似文献