• <tr id="yyy80"></tr>
  • <sup id="yyy80"></sup>
  • <tfoot id="yyy80"><noscript id="yyy80"></noscript></tfoot>
  • 99热精品在线国产_美女午夜性视频免费_国产精品国产高清国产av_av欧美777_自拍偷自拍亚洲精品老妇_亚洲熟女精品中文字幕_www日本黄色视频网_国产精品野战在线观看 ?

    Innovations in marine technology and potential needs for Arctic governance

    2022-02-07 07:10:00YANGJianSHIGuijie
    Advances in Polar Science 2022年4期
    關(guān)鍵詞:吸引力困難融資

    YANG Jian & SHI Guijie

    Innovations in marine technology and potential needs for Arctic governance

    YANG Jian1,2& SHI Guijie3,4*

    1Shanghai Institutes for International Studies, Shanghai 200233, China;2Shanghai Institute for International Organizations and Global Governance, Shanghai University of Finance and Economics, Shanghai 200433, China;3State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;4Institute of Marine Equipment, Shanghai Jiao Tong University, Shanghai 200240, China

    The Arctic is a region of major significance in the Earth system, particularly important for global climate and international maritime governance. As human activity, relying on manufactured equipment, steadily increases in the Arctic, technological innovations for marine equipment must support the gradually more stringent requirements for future Arctic governance. In this review, four categories of innovations are analyzed, namely: innovations driven by traditional thinking, innovations for environmental protection, innovations for practical application, and innovations for observing information systems. Two examples of international regulations, the Polar Code (adopted in 2014) and the International Standard for Arctic offshore structuresof the International Organization for Standardization (ISO 19906, first published in 2010), are selected to illustrate successful international cooperation efforts for Arctic marine innovation. This work provides a basis for discussion on technology development, governance efficiency, and international cooperation in the Arctic.

    innovation, polar marine technology, Arctic governance, environmental protection

    1 Introduction

    The environmental, societal, and economic impact of human activities does not only affect densely populated regions on Earth, but also extends to remote areas. Anthropogenic global warming modifies the Arctic climate more rapidly than anywhere else. Conversely, because of the central role of the Arctic in the planetary climate system, the impact of human activity growth in that region is global.

    Recently, marine technological innovations have induced a notable increase in human activities in the Arctic, pertaining notably to shipbuilding. Moreover, such innovations are important tools for international Arctic governance. By correlating marine technology development with the material requirements for Arctic economic development and governance, four categories of technology and equipment innovations used in the Arctic Ocean are identified: innovations driven by traditional thinking, innovations for environmental protection, innovations for practical applications, and innovations for observing information systems. To overcome the challenges encountered in a marine environment, innovative design for technology and equipment is needed.

    In this review, we analyze the International Code for Ships Operating in Polar Waters (hereafter Polar Code, https://www.imo.org/en/OurWork/Safety/Pages/polar-code.aspx), adopted in 2014 by the International Maritime Organization (IMO), and a standard developed by the eighth working group (WG8) of the International Organization for Standardization (ISO), the ISO 19906 International Standard for Arctic offshore structures, published in 2010 (https://www.iso.org/standard/33690.html) and revised in 2019 (https://www.iso.org/standard/65477.html). We also assess the main innovations in marine technology and equipment in relation to the increasing need for more efficient Arctic governance. Finally, we discuss international cooperation for Arctic marine technology innovation and equipment development.

    2 Innovations driven by traditional thinking

    In this category, equipment and materials are new or regularly upgraded, but underlying ideas and purpose remain traditional, i.e., nearly identical to those of marine equipment builders of the past centuries: (1) to enhance human strength, power, exploration capabilities, and ability to work in severe environments; (2) to provide material support and alleviate the severity of manual labor; (3) to upgrade marine equipment safety; and (4) to find and exploit natural resources for human benefit. Traditional thinking for innovation consists, for example, of optimizing vessel design and operation by developing new types of steel to strengthen ship hulls, new materials to improve icebreaking ability, more powerful engines to enhance sailing ability, or new energy supplies to increase the operational range.

    This concept appears to contain a contradiction, because innovation is not generally associated with traditional thinking. However, technological advances do not necessarily involve drastic changes, but they can also be applied incrementally, by upgrading existing designs without abandoning traditional approaches. Many current innovative resources used for marine equipment in the Arctic Ocean fall into the “incremental advances” category.

    Because China is not an Arctic country, there are few possibilities in China for polar marine technological innovations driven by traditional thinking. Therefore, Chinese innovations should benefit from the expertise of other countries. Alternately, Chinese innovation knowledge acquired in winter in low-temperature regions such as Bohai Sea (Wang et al., 2012) are applicable to the Arctic.

    3 Innovations for environmental protection

    In the Polar Code and the ISO 19906 standard, stringent requirements for environmental and ecological protection (Karahalil and Ozsoy, 2020) were established to account for the fragility of the Arctic biome and to address cleaning operation difficulties in case of oil spill or pollution discharge. Moreover, as part of global policies for climate change mitigation and emission reduction, requirements on marine equipment design and manufacturing have been strengthened to reduce exhausts and carbon emissions from polar ships and offshore engineering equipment. Such innovations aim primarily at limiting negative externalities by developing alternative materials and adopting new protocols to reduce waste dumping and pollutant emissions. For example, heavy oil is gradually replaced by less polluting fuels, and international regulations forbid the release or leaking of toxic liquid substances into the Arctic marine and frozen-soil environments. On the one hand, innovation must comply with Arctic governance regulations, especially for environmental protection; on the other hand, it should provide solutions to limit equipment costs and ensure commercial profitability.

    Polar waters are highly sensitive to environmental contaminants. Climate warming strongly influences the sea-ice cover duration and extent. Global efforts to reduce emissions and to mitigate climate warming are important to prevent the accelerated melting of polar ice, but efforts to mitigate climate warming impact on marine life in polar waters, where intricate relationships connect invertebrates and mammals, are equally essential. Therefore, ships currently operating in Arctic waters must not only comply with pollution prevention requirements from the International Convention for the Prevention of Pollution from Ships (MARPOL), but should also consider carbon and gray water emissions, anticipate a proposed ban on heavy oil, improve their abilities to recover pollutants, and implement underwater noises control. These strict constraints are challenging for ship design. Pollution prevention requirements cause increased costs, affecting the shipping economy and the willingness of ship-owners to operate in the Arctic. Thus, the objective of innovation for environmental protection is to discover new materials and technologies to meet the requirements of the Polar Code in MARPOL, while maintaining the building costs (or limiting their increase) and the original capabilities and functions of the ship. The shipping industry is gradually responding to the Polar Code requirements that prohibit discharge of oil, oily mixtures, toxic liquid substances, or mixtures containing toxic substances into Arctic waters.

    During the 60th meeting of the IMO Marine Environmental Protection Committee, significant progress was made on drafting technical measures to reduce exhaust emissions and air pollution from international shipping, including mandatory texts establishing an Energy Efficiency Design Index (EEDI) for new ships within the legal framework of MARPOL Annex VI. Such progress constitutes a major improvement for environmental protection, although reducing exhaust emissions and air pollution is a markedly more difficult task than improving the safety of personnel and ships in sea-ice environments. Ships built in accordance with the EEDI might lack sufficient power to navigate in the inhospitable Arctic environment, for example to maintain normal speed or to progress in turbulent wind and rough sea conditions. Therefore, ship design innovations must successfully balance engine power with EEDI energy efficiency requirements to ensure proper ship operation in cold Arctic regions.

    The Arctic environment is more vulnerable to pollution than temperate regions. Therefore, structures intended for Arctic operations should be optimally designed to minimize their pollution potential while maintaining reasonable operability. As an example for the similar Antarctic environment, a new class of icebreaking polar research vessels incorporates innovative technologies for fuel efficiency, noise reduction, and protection of the polar region (Rogan-Finnemore et al., 2021).

    Compliance with ISO 19906 requires designing structures to contain spills resulting from inadvertent release of contaminants into the environment. Structural systems requiring active pollution operations should be avoided. Harmful environmental impacts should also be minimized during construction, transport, installation, and decommissioning. In particular, fluids and materials used for commissioning should be contained in double-barrier tanks to avoid harmful release into the environment. Structural design should facilitate environmental monitoring, which is addressed by the ISO 35103 standard. A protocol should be established for inspection, maintenance, and repair of tanks containing potentially polluting fluids and materials. Finally, dissolved oxygen content in cold waters is generally high, which enhances corrosion. Therefore, water content data should be collected locally to account for this factor in the choice of structural materials.

    4 Innovations for practical applications

    This category refers to design modifications applied to marine technology or equipment developed in other parts of the world for adaptation to the extreme Arctic conditions (low temperatures, high latitudes, polar night, remoteness, etc.). Environmental conditions affect hull structure, ship stability, machinery, communication and navigation systems, equipment functionality and efficiency, maintenance, emergency escape, and safety performance.

    四是缺乏對(duì)入駐企業(yè)的吸引力。Z公司為入駐企業(yè)提供的孵化服務(wù)對(duì)促進(jìn)入駐企業(yè)發(fā)展的作用不明顯,與入駐企業(yè)僅是簡(jiǎn)單的場(chǎng)地租賃關(guān)系,導(dǎo)致Z公司對(duì)入駐企業(yè)缺乏吸引力。另外,Z公司也未能為入駐企業(yè)解決遇到的技術(shù)創(chuàng)新、融資等需求問(wèn)題,導(dǎo)致企業(yè)孵化工作提升困難。

    Following technological advances, the discovery of natural resources, and the climate warming-induced evolution of Arctic climatic conditions, human activities in the Arctic have recently diversified. Traditional activities of low-latitude oceans are appearing in the polar regions. This evolution requires new tools and protocol for production and social activity around the Arctic Ocean and provides an opportunity for marine engineers to create or adapt marine technology to the Arctic. For example, in low-latitude open waters, offshore oil and gas extraction and wind power generation are common, submarine cables on the seabed connect islands and continents, and aquaculture cages are installed in coastal areas. Such activities and equipment cannot be readily transferred to the Arctic without technological adaptation to polar waters. A common approach to achieve adaptation is “winterization”, which consists in ensuring that a structure is suitably prepared and operational in polar waters by designing operation protocols and choosing materials adapted to extreme conditions. Winterization ensures reliable functionality of systems and equipment and a safe working environment for resident personnel.

    These innovations for practical application focus mainly on four categories of equipment: resource development, transport and communication, rescue, and scientific research and monitoring (discussed in Section 5). Oil and gas exploration, development, and engineering equipment includes drilling ships and platforms (Connelly and Brovkin, 2014), cold sea drilling equipment, gravity production platforms (Jackson et al., 2008), floating production platforms, and underwater production systems. Platforms or ships are designed with reinforced structures for enhanced resistance to ice. Examples are the Prirazlomnaya platform (Zhukov and Karlinsky, 2004) or the “Christophe de Margerie” class of liquefied natural gas carriers (Hannon, 2019). The ExxonMobil (United States) and Kvaerner (Norway) have submitted patent applications for ice-resistant drilling rigs that could endure winter without disfunction. In terms of transport, polar vessels include multipurpose ships, semisubmersible ships, oil tankers, liquefied natural gas ships, container ships, bulk carriers, ore carriers, and cruise ships. Finally, for life support and service to the resident population, rescue equipment includes icebreakers and lifeboats, while robotic equipment such as nimble robotic arms, immersive vision systems, and humanoid walking robots could reduce the need for continuous on-site human presence.

    5 Innovations for observing information systems

    The fourth category comprises innovations aimed at the expansion, diversification, and integration of Arctic-wide observation systems. This implies new scientific missions and activities in the Arctic to better characterize the changing environmental and ecological conditions, both in the Arctic system and at the global scale. Understanding dynamic modifications of the Arctic system requires comprehensive and consistent scientific observation data. Historically, Arctic observations were initiated to support weather forecasting, then surveys were conducted to accumulate measurements, for example on ocean currents, seabed topography, ice conditions, and biodiversity. Early observations of the Arctic Ocean, weather, and ice conditions were mostly acquired at fixed onshore observation stations or derived from ship-based measurements. Thus, the resulting datasets were spatially distinct and temporally discontinuous, because of the lack of standardization in local approaches and measurement protocols for different data sources and observation periods.

    To characterize environmental variations and trends in the Arctic, technological innovations must address major issues: the scarcity of monitoring devices, the limited spatiotemporal coverage, and the low diversity and performance of currently-operational scientific equipment. Furthermore, access to data on different elements of the Arctic system (e.g., atmosphere, ocean, ice sheet) to support governance decisions should be maximized. Scarcity of ocean-based instruments (punctual measurements from isolated ships) and dataset “fragmentation” (no spatial and temporal continuity) are the main reasons for the limited information integration in existing Arctic observation systems.

    Polar environmental observations should provide data with sufficient temporal sampling and spatial coverage, for example to support oil and gas exploration and development in specific regions of the Arctic Ocean. In terms of geophysical parameters, observations should target sea-ice, icebergs, waves, wind, and temperature. Necessary innovations should allow the characterization of ice thickness, and iceberg shape and oceanic track (King, 2018).

    An early attempt at comprehensive observation acquisition is the International Arctic Buoy Programme (https://iabp.apl.uw.edu/). Extending since 1991 the Arctic Ocean Buoy Program initiated in 1979, the International Arctic Buoy Programme operates a network of automatic data buoys designed to monitor Arctic and global climate change, to support weather and sea-ice forecasting, and to provide a reference dataset for validation and assimilation of climate model output and satellite data.

    Other important efforts have focused on using information technology to integrate data with differences in spatial scale, spatiotemporal coverage, observation method, and instrumentation. Merging measurements improves dataset accuracy and completeness, which is essential for comprehensive assessment of the distribution and trends of environmental geophysical parameters within the oceanic, polar, and Earth complex systems. For this purpose, data assimilation is a particularly useful method that should be supported by technological innovations.

    Data assimilation combines numerical models and observations to characterize geophysical parameters and derive improved estimates of the true state of a system (Wikle and Berliner, 2007). Data assimilation has been extensively used for scientific studies of the atmosphere, ocean, and land surface. It uses observational data as input for a numerical model simulating a physical system (e.g., the atmospheric boundary layer). Observations provide input constraints to improve the model simulation performance; conversely, the model supplements the data (e.g., by gridded interpolation) to compensate their limited spatial and temporal coverage. For example, a large fraction of the Arctic Ocean is permanently covered by ice. Therefore, a data assimilation model should simulate dynamic ice–ocean interactions by including an ice–ocean coupling algorithm.

    An example of multiple dataset integration in an assimilation system was the Integrative Data Assimilation for the Arctic System (IDAAS) (https://www.whoi.edu/ science/PO/arcticgroup/projects/andrey_project2/indexAP.html), proposed in 2005 by a special US interagency research group in collaboration with international partners, the Study of Environmental Arctic Change (SEARCH) program (https://searcharcticscience.org/). Nominally, non-atmospheric components were planned for inclusion in IDAAS: oceanic, terrestrial geophysical and biogeochemical parameters, sea ice measurements, and human sociological data.

    The proposal for IDAAS integrated the Pan-Arctic Ice Ocean Modeling and Assimilation System (PIOMAS) and the Semi-Implicit Ocean Model (SIOM) to assimilate sea ice, momentum, heat, and salt flux data within a four-dimensional variational assimilation algorithm. The proposed algorithm flowchart for this reanalysis system is presented in Figure 1.

    Currently, collected Arctic data is “multidimensional”. Besides an increased number of ground-based and ship-based instruments, modern observation platforms are satellite-borne, airborne, ice-based, or underwater. Figure 2 illustrates the types of devices that could be combined into an integrated system, for example the integrated Arctic Ocean Observing System (Dickson, 2006). With the increased portability and number of sensor types, the combined data volume has become considerable. For this reason, marine scientific equipment and observation processing systems should be designed to fulfill Arctic governance requirements. Furthermore, marine design innovations should consider the specific requirements for data assimilation and integration, for example by implementing mobile instruments that can accurately chart the water surface, the seabed, and specific subsurface depths involved in key scientific phenomena. Such instruments should be supported by optimized data collection with precise geolocation and temporal information. Simultaneously, efficient, secured, and reliable information transmission methods should be developed.

    Figure 1 Proposed reanalysis system built around the PIOMAS and SIOM models (Proshutinsky et al., 2010).

    Figure 2 Schematic representation of vertically distributed observation components, from satellites to seabed sensors, in a proposed integrated Arctic Ocean Observing System (Dickson, 2006). ADCP, acoustic Doppler current profiler; AUV, autonomous underwater vehicle; BPG , bottom pressure gauges; CHL, cold halocline layer; CTD, conductivity, temperature, and depth; ITP, ice-tethered platforms; SBE, shelf–basin exchange; SSH, sea surface height; ULS, upward looking sonar.

    Marine innovations for observing information systems include designing small equipment to operate on the seabed, underwater, at the sea surface, and on ice that can ensure information transmission and networking to complement shipborne monitoring devices, such as observation devices in specially designed unmanned remote-controlled vehicles operating underwater or at the surface. For data collection, data standards should be established for the next generation of information processing that will include data integration and assimilation by supporting models.

    Marine equipment innovations should be systemic and compatible. Marine sensor-bearing vehicles also represent testing platforms for equipment release, machine installation, data collection, and safety assurance. Moreover, they should function as communication hubs to connect and transmit data. For example, a marine instrument could serve as a receiving station for satellites from GPS or for research satellites dedicated to sea or ice observations. Finally, innovations in marine equipment should comply with technical requirements for data collection and processing centers.

    Figure 3 shows a second example of the diversity of marine equipment needed for an Arctic Observing System (Rigor, 2005): basin-scale autonomous underwater vehicles (AUVs)and their docking stations, moored profilers, gliders with water lasers, Argo floats, cabled seabed systems, upward-looking sonars, drifting buoys, ice-tethered platforms (ITPs), data shuttles, and underwater tomography receivers. To survey the polar subglacial marine environment, China has developed several types of unmanned underwater vehicles including the HaiJi remote operated vehicle, the TS-1000 AUV, and the Haiyi glider (Zeng et al., 2021).

    Figure 3 Schematic description of a proposed Arctic Observing System (Rigor, 2005).

    6 International cooperation for Arctic marine innovation

    Marine technological innovation in the Arctic requires applying new technologies to a highly unfavorable environment and cannot be achieved without extensive international cooperation. The international cooperation

    process that has taken place for the development of the Polar Code is a major international success in Arctic governance. It was developed collaboratively, under the guidance of successive IMO Secretary-Generals Koji Sekimizu (Japan, 2012–2015) and Kitack Lim (Korea, 2016–present), by Arctic countries (Canada, Denmark/ Greenland, Finland, Norway, Russia, and the United States), East Asian maritime countries, and additional important shipping countries, before adoption in 2017.

    The ISO 19906 standard was elaborated in 2010 and updated in 2019. Table 1 lists the WG8 member countries whose representatives drafted the standard (their affiliations in 2010 are also given). This list clearly illustrates that this standard benefited from the combined expertise of both Arctic and non-Arctic (China, France, Germany, Italy, Japan, Kazakhstan, the Netherlands, and the United Kingdom) countries. Significant experience on the characteristics and constraints of offshore structures was acquired in the 1980s, with ice loading measurements from offshore exploration platforms deployed in the Beaufort Sea (Sinsabvarodom et al., 2022). Results from more recent research projects, such as the European Union-funded measurements on Structures in Ice (STRICE) (https://cordis. europa.eu/project/id/EVG1-CT-2000-00024) projects or ice load measurements in the Bohai Sea in China, on the Confederation Bridge in Canada and in Japan (Blanchet et al., 2011), were incorporated into the ISO 19906 standard.

    The Polar Code and the ISO 19906 standard provide a partial framework for Arctic governance by their important role for marine engineering and technology projects regulation. They also indicate possible directions for future marine technological innovation. Their implementation and adoption is a good example of constructive international cooperation and shows that the expertise, knowledge, and technology of countries outside the Arctic is useful for Arctic governance.

    Table 1 WG8 member countries and their representatives (with affiliations) during development of the ISO 19906 standard (Blanchet et al., 2011)

    China, Japan, and Republic of Korea are developed countries with a strong capacity for technological innovation, pursuing cooperation with Arctic countries to develop marine equipment in compliance with Arctic governance goals. Their expertise in information technology, shipbuilding, and cold-region and smart-technology port infrastructure construction, can benefit Arctic governance. A survey on technological innovations for sustainability in the Arctic led by Jong-Deog Kim, President of the Korea Maritime Institute, identified the following priority areas: ?ocean energy development and utilization; prediction and adaptation to ocean environmental changes; marine pollution mitigation; fundamental marine bioengineering; oceanographic observation and monitoring; development of ocean-specific equipment for exploration; ?port operation information system design; advanced maritime traffic automation and safety enhancement; fishery resources surveys; and aquaculture management. Most of these priority areas are related to marine technology, to which East Asian countries such as China, Japan, and Republic of Korea can contribute successfully in future.

    7 Conclusions

    In this work, we presented and discussed four categories of marine technology innovations for economic development and governance in the Arctic. Traditionally-oriented innovations mainly rely on previous experience to apply incremental improvements for safer and more reliable designs. Innovations for environmental protection are implemented to mitigate pollution of the Arctic air, water, and biome, with cost-control efforts to ensure engineering feasibility. Application innovations consist of adapting or upgrading existing lower-latitude marine structures, designed for less severe environments, to withstand the extreme conditions encountered in the Arctic. Technological innovations of the fourth category are intended for expansion and integration of available observation datasets in the Arctic, to investigate its climatic and environmental history and to predict future trends. The severe Arctic environment and limited availability of adapted technology have stimulated international cooperation. These collaborative efforts resulted in the successful development of regulations and governance protocols, such as the Polar Code and the ISO 19906 standard. Cooperation on Arctic marine innovation between East Asian and Arctic countries should be increased to promote sustainable development in that key region of the Earth system.

    Acknowledgments This project is supported by the National Natural Science Foundation of China (Grant no. 51809168) and the Ministry of Industry and Information Technology of the People’s Republic of China (Grant nos. CBG2N21-3-1 and CBG2N21-4-1). We would like to thank two anonymous reviewers, the reviewer Dr. Xichong Yu, and Associate Editor Dr. Pavel Talalay for their valuable suggestions and comments that improved this manuscript.

    Blanchet D, Spring W, McKenna R F, et al. 2011. ISO 19906: An international standard for Arctic offshore structures. Houston, Texas, USA: OTC Arctic Technology Conference, doi:10.4043/22068-ms.

    Connelly D, Brovkin A. 2014. Increasing role of marine support in Arctic offshore exploration drilling.Houston, Texas, USA: OTC Arctic Technology Conference, doi:10.4043/24632-ms.

    Dickson B. 2006. The integrated Arctic Ocean Observing System (iAOOS): an AOSB-CliC Observing Plan for the International Polar Year. Oceanologia, 48(1): 5-21.

    Hannon F J L. 2019. Shipping LNG from the Arctic: a true story. Honolulu, Hawaii, USA: The 29th International Ocean and Polar Engineering Conference.

    Jackson G, Raine B, Powell J, et al. 2008. Gravity based substructure solutions for Arctic LNG. Vancouver, Canada: The Eighteenth International Offshore and Polar Engineering Conference.

    Karahalil M, Ozsoy B. 2020. Evaluation of the Polar Code in different environments and for different maritime activities in the two polar regions. Adv Polar Sci, 31(4): 237-240, doi:10.13679/j.advps.2020. 0028.

    King T. 2018. Facility side-tracking for iceberg risk management. Houston, Texas, USA: OTC Arctic Technology Conference, doi:10.4043/ 29096-ms.

    Proshutinsky A, Lindsay R, Nechaev D, et al. 2010. Toward reanalysis of the Arctic Climate System – sea ice and ocean reconstruction with data assimilation, doi:10.5065/D6XS5SHC.

    Rigor I G. 2005. Arctic sea ice and ocean observations. https://www. nsf.gov/pubs/2005/nsf0539/nsf0539_4.pdf.

    Rogan-Finnemore M, Ojeda M, Paz Acosta J M, et al. 2021. Icebreaking polar class research vessels: new Antarctic fleet capabilities. Polar Rec, 57: e46, doi:10.1017/s003224742100067x.

    Sinsabvarodom C, Chai W, Leira B J, et al. 2022. Ice rose diagrams for probabilistic characterization of the ice drift behavior in the Beaufort Sea. Ocean Eng, 266: 112708, doi:10.1016/j.oceaneng.2022.112708.

    Wang Y L, Yue Q J, Bi X J. 2012. Ice force measurement technology of jacket platform in Bohai Sea. Int J Offshore Polar Eng, 22(1): 46-52.

    Wikle C K, Berliner L M. 2007. A Bayesian tutorial for data assimilation. Phys D Nonlinear Phenom, 230(1-2): 1-16, doi:10.1016/j.physd. 2006.09.017.

    Zeng J B, Li S, Liu Y. 2021. Application of unmanned underwater vehicles in polar research. Adv Polar Sci, 32(3): 173-184, doi:10.13679/j.advps. 2021.0018.

    Zhukov G V, Karlinsky S L. 2004. Production platforms for Russian offshore. Vladivostok, Russia: The Sixth ISOPE Pacific/Asia Offshore Mechanics Symposium.

    : Yang J, Shi G J. Innovations in marine technology and potential needs for Arctic governance. Adv Polar Sci, 2022, 33(4): 336-343,

    10.13679/j.advps.2022.0014

    15 August 2022; accepted 29 November 2022; published online 30 December 2022

    10.13679/j.advps.2022.0014 December 2022 Vol. 33 No. 4: 336-343

    Corresponding author, E-mail: sgj2004@sjtu.edu.cn

    猜你喜歡
    吸引力困難融資
    融資統(tǒng)計(jì)(1月10日~1月16日)
    融資統(tǒng)計(jì)(8月2日~8月8日)
    困難中遇見(jiàn)團(tuán)隊(duì)
    困難我不怕
    融資
    融資
    吸引力1
    吸引力2
    跟蹤導(dǎo)練(三)4
    選擇困難癥
    国产精品久久久久久精品电影小说| 美女大奶头黄色视频| 国产一级毛片在线| 亚洲精品国产成人久久av| 男人舔奶头视频| 日本黄色日本黄色录像| 国产高清三级在线| 国产 精品1| 成人漫画全彩无遮挡| 又大又黄又爽视频免费| 中文字幕人妻丝袜制服| 国产免费又黄又爽又色| 国产视频内射| 亚洲色图综合在线观看| 各种免费的搞黄视频| 亚洲精品乱码久久久久久按摩| 伊人久久精品亚洲午夜| 日本91视频免费播放| 亚洲国产最新在线播放| 国产精品国产三级国产av玫瑰| 22中文网久久字幕| 99国产精品免费福利视频| 亚洲美女搞黄在线观看| 热99国产精品久久久久久7| 青青草视频在线视频观看| 日本vs欧美在线观看视频 | 国产精品免费大片| 婷婷色综合大香蕉| 一级毛片黄色毛片免费观看视频| 免费看不卡的av| 亚洲图色成人| 水蜜桃什么品种好| 久久6这里有精品| 国产欧美另类精品又又久久亚洲欧美| 又粗又硬又长又爽又黄的视频| 日日啪夜夜撸| av天堂中文字幕网| 少妇的逼水好多| 乱人伦中国视频| 欧美精品亚洲一区二区| 日本爱情动作片www.在线观看| 亚洲精品色激情综合| 欧美日韩在线观看h| 99视频精品全部免费 在线| 少妇被粗大的猛进出69影院 | 亚洲欧美日韩卡通动漫| 大片电影免费在线观看免费| 亚洲天堂av无毛| 日韩欧美 国产精品| 女人久久www免费人成看片| 两个人免费观看高清视频 | 免费高清在线观看视频在线观看| 色网站视频免费| 欧美人与善性xxx| 一个人免费看片子| 丰满饥渴人妻一区二区三| 中文字幕精品免费在线观看视频 | av在线老鸭窝| 国产精品伦人一区二区| 下体分泌物呈黄色| 好男人视频免费观看在线| 国产高清国产精品国产三级| 国产成人91sexporn| 国产极品天堂在线| 中文字幕人妻丝袜制服| 十八禁网站网址无遮挡 | 精品国产一区二区久久| 汤姆久久久久久久影院中文字幕| av天堂中文字幕网| 精品人妻熟女毛片av久久网站| 免费人成在线观看视频色| 狠狠精品人妻久久久久久综合| 国产精品99久久99久久久不卡 | 久久这里有精品视频免费| 蜜桃久久精品国产亚洲av| 久久人人爽人人片av| 亚洲欧美清纯卡通| 国精品久久久久久国模美| 亚洲欧洲精品一区二区精品久久久 | 中文字幕人妻熟人妻熟丝袜美| 一级黄片播放器| 99久久精品国产国产毛片| 日本爱情动作片www.在线观看| 日本猛色少妇xxxxx猛交久久| 精品国产一区二区久久| 亚洲美女黄色视频免费看| av天堂中文字幕网| 国产精品99久久久久久久久| 精品视频人人做人人爽| 丝瓜视频免费看黄片| 久久久久国产精品人妻一区二区| 最后的刺客免费高清国语| 久久久久人妻精品一区果冻| 国产亚洲91精品色在线| 草草在线视频免费看| 国产精品无大码| av网站免费在线观看视频| 99精国产麻豆久久婷婷| 久久久久久久久久久免费av| 99re6热这里在线精品视频| 午夜免费男女啪啪视频观看| 美女中出高潮动态图| 老女人水多毛片| 黑人巨大精品欧美一区二区蜜桃 | 亚洲av二区三区四区| 精品人妻熟女毛片av久久网站| 久久毛片免费看一区二区三区| 亚洲av成人精品一区久久| 亚洲精品乱码久久久v下载方式| 日本黄色片子视频| 国产片特级美女逼逼视频| 国产视频内射| 秋霞在线观看毛片| 日韩 亚洲 欧美在线| 亚洲精品日本国产第一区| 亚洲精品国产av成人精品| 国产精品久久久久久av不卡| 校园人妻丝袜中文字幕| 国产精品一区二区在线不卡| 国产男女内射视频| 亚洲一级一片aⅴ在线观看| 99热国产这里只有精品6| 日本av免费视频播放| 免费高清在线观看视频在线观看| 久久久亚洲精品成人影院| 男人舔奶头视频| 久久久亚洲精品成人影院| 多毛熟女@视频| 亚洲欧洲国产日韩| av免费观看日本| 少妇人妻一区二区三区视频| 91午夜精品亚洲一区二区三区| 国产女主播在线喷水免费视频网站| 亚洲第一区二区三区不卡| av福利片在线观看| 国产欧美亚洲国产| 十八禁网站网址无遮挡 | 爱豆传媒免费全集在线观看| 精品一区二区免费观看| 国产极品天堂在线| 国产亚洲5aaaaa淫片| 街头女战士在线观看网站| 日日啪夜夜撸| 国产极品天堂在线| 婷婷色麻豆天堂久久| 伊人亚洲综合成人网| 国产免费一级a男人的天堂| 永久网站在线| 日本免费在线观看一区| 久久国产精品大桥未久av | 国产亚洲最大av| 激情五月婷婷亚洲| 亚洲精品国产色婷婷电影| 午夜老司机福利剧场| 国产成人免费无遮挡视频| 久久国产亚洲av麻豆专区| 久久精品久久精品一区二区三区| 国产男人的电影天堂91| 一级毛片电影观看| 亚洲精品国产色婷婷电影| 搡老乐熟女国产| 亚洲av电影在线观看一区二区三区| 久久影院123| 人人妻人人添人人爽欧美一区卜| 亚洲av电影在线观看一区二区三区| 99九九线精品视频在线观看视频| 男女边吃奶边做爰视频| 多毛熟女@视频| 日日摸夜夜添夜夜爱| 高清欧美精品videossex| 亚洲va在线va天堂va国产| 国内精品宾馆在线| 国产精品久久久久久精品电影小说| 色婷婷久久久亚洲欧美| 国产亚洲精品久久久com| 五月天丁香电影| 久久久久国产精品人妻一区二区| 亚洲精品第二区| 色视频www国产| 久久99热6这里只有精品| 亚洲av综合色区一区| 国产精品久久久久久久久免| 久久久久久久国产电影| 中文字幕久久专区| 久久毛片免费看一区二区三区| 女性生殖器流出的白浆| 女性生殖器流出的白浆| 熟女电影av网| 午夜福利网站1000一区二区三区| 日韩欧美 国产精品| 亚洲精品亚洲一区二区| freevideosex欧美| 少妇人妻一区二区三区视频| 精品国产乱码久久久久久小说| 五月伊人婷婷丁香| 国产欧美日韩综合在线一区二区 | 九色成人免费人妻av| 亚洲欧洲精品一区二区精品久久久 | av免费观看日本| 国产欧美日韩综合在线一区二区 | 2021少妇久久久久久久久久久| 亚洲综合精品二区| 欧美精品亚洲一区二区| 日韩一区二区三区影片| 男人狂女人下面高潮的视频| 久久精品国产亚洲av天美| av黄色大香蕉| 久久国产精品男人的天堂亚洲 | 免费播放大片免费观看视频在线观看| 亚洲伊人久久精品综合| 在线观看国产h片| 免费观看无遮挡的男女| 亚洲综合精品二区| 精品人妻熟女av久视频| 性色av一级| 老熟女久久久| 秋霞伦理黄片| 日韩在线高清观看一区二区三区| 免费看光身美女| av福利片在线观看| 永久免费av网站大全| 在现免费观看毛片| 久久韩国三级中文字幕| 国语对白做爰xxxⅹ性视频网站| 五月天丁香电影| 嘟嘟电影网在线观看| 伊人久久国产一区二区| 免费人成在线观看视频色| a级片在线免费高清观看视频| 亚洲久久久国产精品| h日本视频在线播放| 三级国产精品欧美在线观看| 免费人妻精品一区二区三区视频| 欧美日韩精品成人综合77777| 色吧在线观看| 在线观看免费高清a一片| 美女视频免费永久观看网站| 国产毛片在线视频| 看十八女毛片水多多多| 你懂的网址亚洲精品在线观看| 日韩欧美 国产精品| 草草在线视频免费看| 成人国产av品久久久| 欧美日韩国产mv在线观看视频| 五月天丁香电影| 免费看日本二区| 日韩视频在线欧美| 亚洲久久久国产精品| 日本免费在线观看一区| 2022亚洲国产成人精品| 精品国产一区二区久久| 丰满乱子伦码专区| 91久久精品国产一区二区成人| 成年人午夜在线观看视频| 亚洲精品456在线播放app| 国产高清三级在线| 内射极品少妇av片p| av.在线天堂| 如日韩欧美国产精品一区二区三区 | 熟女人妻精品中文字幕| 国产精品蜜桃在线观看| 欧美97在线视频| 久久久久久久久久成人| 午夜福利在线观看免费完整高清在| 亚洲精品自拍成人| 九九久久精品国产亚洲av麻豆| 伦理电影免费视频| 午夜福利视频精品| 狂野欧美白嫩少妇大欣赏| 精品亚洲乱码少妇综合久久| h视频一区二区三区| 五月开心婷婷网| 欧美精品一区二区大全| 人人妻人人澡人人看| 成人特级av手机在线观看| 18禁在线无遮挡免费观看视频| 99热6这里只有精品| 97在线人人人人妻| 久久亚洲国产成人精品v| 国产高清不卡午夜福利| 在线观看免费日韩欧美大片 | 欧美精品一区二区免费开放| 桃花免费在线播放| 日韩成人av中文字幕在线观看| 美女cb高潮喷水在线观看| 亚洲国产欧美日韩在线播放 | 又大又黄又爽视频免费| 激情五月婷婷亚洲| 18禁在线无遮挡免费观看视频| 久久久久国产精品人妻一区二区| 国产乱人偷精品视频| 成人免费观看视频高清| 亚洲欧洲国产日韩| 伦理电影免费视频| 国产老妇伦熟女老妇高清| 亚洲国产成人一精品久久久| 国产精品人妻久久久久久| 插逼视频在线观看| 在线观看免费日韩欧美大片 | 亚洲一区二区三区欧美精品| 女人精品久久久久毛片| 久久99热这里只频精品6学生| 国产精品一区www在线观看| 麻豆精品久久久久久蜜桃| 观看免费一级毛片| www.av在线官网国产| 亚洲真实伦在线观看| 国产一区亚洲一区在线观看| 91久久精品国产一区二区成人| 最近2019中文字幕mv第一页| 在线观看人妻少妇| www.av在线官网国产| 免费高清在线观看视频在线观看| 最近最新中文字幕免费大全7| 国产综合精华液| 国产黄色视频一区二区在线观看| av在线app专区| 大香蕉久久网| 欧美精品一区二区免费开放| √禁漫天堂资源中文www| av卡一久久| 欧美丝袜亚洲另类| 国产在线男女| 精品熟女少妇av免费看| 婷婷色综合大香蕉| 国产日韩一区二区三区精品不卡 | 欧美日韩在线观看h| 国产精品三级大全| 99久久综合免费| 免费看av在线观看网站| 国产在线男女| 亚洲精品aⅴ在线观看| 亚洲综合色惰| 久久韩国三级中文字幕| 国产无遮挡羞羞视频在线观看| 国产在线男女| 日韩欧美 国产精品| 国产一区亚洲一区在线观看| 国产中年淑女户外野战色| 看十八女毛片水多多多| 91久久精品国产一区二区三区| 内地一区二区视频在线| 人体艺术视频欧美日本| xxx大片免费视频| 中文字幕精品免费在线观看视频 | 三级国产精品欧美在线观看| 亚洲一级一片aⅴ在线观看| 王馨瑶露胸无遮挡在线观看| 成人二区视频| 麻豆成人av视频| 亚洲av中文av极速乱| 黑人猛操日本美女一级片| 一本大道久久a久久精品| av在线app专区| 成人亚洲精品一区在线观看| 日本午夜av视频| 综合色丁香网| 久久久久国产精品人妻一区二区| 熟妇人妻不卡中文字幕| 国产成人午夜福利电影在线观看| 亚洲精品亚洲一区二区| 久久人人爽av亚洲精品天堂| 欧美xxxx性猛交bbbb| 午夜视频国产福利| 国产精品一区二区性色av| 免费大片18禁| 免费黄色在线免费观看| 日本欧美视频一区| av.在线天堂| 久久久久视频综合| 精品久久久精品久久久| 老熟女久久久| 黄色配什么色好看| 欧美bdsm另类| 久久精品久久精品一区二区三区| 国产精品久久久久久精品古装| 久久av网站| 亚洲美女黄色视频免费看| 久久午夜综合久久蜜桃| 99热这里只有是精品在线观看| 97超碰精品成人国产| 国产亚洲5aaaaa淫片| 久久人人爽av亚洲精品天堂| 国产精品一二三区在线看| 久久亚洲国产成人精品v| 只有这里有精品99| 国产日韩一区二区三区精品不卡 | 日本色播在线视频| 亚洲精品久久午夜乱码| 亚洲精品456在线播放app| 不卡视频在线观看欧美| 精品国产乱码久久久久久小说| 免费观看无遮挡的男女| 成年av动漫网址| h日本视频在线播放| 亚洲国产av新网站| 国产av国产精品国产| 另类精品久久| 欧美+日韩+精品| 一区在线观看完整版| 午夜福利视频精品| 久久精品国产鲁丝片午夜精品| 最近中文字幕2019免费版| 日韩大片免费观看网站| 热99国产精品久久久久久7| 久久狼人影院| 纵有疾风起免费观看全集完整版| 亚洲欧洲日产国产| 久久人人爽人人片av| 精品少妇黑人巨大在线播放| 国产一区二区在线观看日韩| 国产精品久久久久久av不卡| 乱人伦中国视频| 免费av不卡在线播放| 我的女老师完整版在线观看| 2021少妇久久久久久久久久久| 成人综合一区亚洲| 一区二区三区精品91| 嫩草影院新地址| 中文字幕亚洲精品专区| 国产男女超爽视频在线观看| 日韩中文字幕视频在线看片| 下体分泌物呈黄色| 国产伦在线观看视频一区| 久久精品国产自在天天线| 中文字幕精品免费在线观看视频 | 国产 一区精品| 久久国产亚洲av麻豆专区| 新久久久久国产一级毛片| 午夜福利网站1000一区二区三区| 精品一区在线观看国产| 性色av一级| 黄色日韩在线| 国产精品人妻久久久影院| 97精品久久久久久久久久精品| 一区二区三区四区激情视频| 99久久中文字幕三级久久日本| 五月天丁香电影| 欧美xxxx性猛交bbbb| 在线精品无人区一区二区三| 日韩伦理黄色片| 亚洲四区av| 免费看不卡的av| 久久久久精品久久久久真实原创| 午夜福利视频精品| 欧美精品高潮呻吟av久久| 国产永久视频网站| 视频中文字幕在线观看| 久久精品国产a三级三级三级| 赤兔流量卡办理| 最黄视频免费看| 夜夜骑夜夜射夜夜干| 两个人免费观看高清视频 | 欧美 亚洲 国产 日韩一| 两个人免费观看高清视频 | 国产精品99久久99久久久不卡 | 九色成人免费人妻av| 热re99久久精品国产66热6| 女性生殖器流出的白浆| 一本—道久久a久久精品蜜桃钙片| 国产成人aa在线观看| 不卡视频在线观看欧美| 女人精品久久久久毛片| 国产黄色视频一区二区在线观看| 日本黄色日本黄色录像| av免费在线看不卡| 亚洲精品第二区| 性高湖久久久久久久久免费观看| 中国三级夫妇交换| 99热这里只有是精品在线观看| 伦理电影大哥的女人| 自拍欧美九色日韩亚洲蝌蚪91 | 久久人妻熟女aⅴ| 激情五月婷婷亚洲| 九九爱精品视频在线观看| 制服丝袜香蕉在线| 久久久精品94久久精品| 成人美女网站在线观看视频| 精品久久久久久电影网| 少妇熟女欧美另类| 亚洲电影在线观看av| 中文精品一卡2卡3卡4更新| 欧美3d第一页| 天堂中文最新版在线下载| 成人漫画全彩无遮挡| videos熟女内射| 久久热精品热| 日日摸夜夜添夜夜爱| 99久久精品一区二区三区| av福利片在线| 乱系列少妇在线播放| 亚洲中文av在线| 精品久久国产蜜桃| 亚洲人成网站在线播| 国产成人精品无人区| 黄色毛片三级朝国网站 | 欧美日韩精品成人综合77777| av不卡在线播放| 国产一区二区三区综合在线观看 | 国产亚洲一区二区精品| 全区人妻精品视频| 亚洲精品国产色婷婷电影| 亚洲精品一区蜜桃| 久久久午夜欧美精品| 午夜91福利影院| 色5月婷婷丁香| 欧美精品国产亚洲| 中文乱码字字幕精品一区二区三区| av有码第一页| 丰满乱子伦码专区| 精品亚洲成a人片在线观看| av播播在线观看一区| 大香蕉97超碰在线| 五月开心婷婷网| 伦理电影免费视频| 乱码一卡2卡4卡精品| 如日韩欧美国产精品一区二区三区 | 精品视频人人做人人爽| 免费播放大片免费观看视频在线观看| 亚洲欧美中文字幕日韩二区| 国产精品.久久久| 国产视频首页在线观看| 国产色爽女视频免费观看| 69精品国产乱码久久久| 黄色视频在线播放观看不卡| 免费av不卡在线播放| 国产精品女同一区二区软件| av在线老鸭窝| 日韩中字成人| 少妇熟女欧美另类| 国产成人精品久久久久久| 免费观看无遮挡的男女| 欧美变态另类bdsm刘玥| 亚州av有码| 自线自在国产av| 黄片无遮挡物在线观看| 黄色视频在线播放观看不卡| 大陆偷拍与自拍| 久久99热这里只频精品6学生| 久久这里有精品视频免费| 99久久精品热视频| 极品教师在线视频| 男女边摸边吃奶| av不卡在线播放| 黄色日韩在线| 日韩成人av中文字幕在线观看| 精品一品国产午夜福利视频| 少妇被粗大猛烈的视频| 久久人人爽人人片av| 边亲边吃奶的免费视频| 王馨瑶露胸无遮挡在线观看| 亚洲在久久综合| 久久久久人妻精品一区果冻| 成人综合一区亚洲| 色婷婷av一区二区三区视频| 欧美成人精品欧美一级黄| 2022亚洲国产成人精品| 男人爽女人下面视频在线观看| 久久国产精品大桥未久av | 大又大粗又爽又黄少妇毛片口| 国产伦精品一区二区三区视频9| 国产69精品久久久久777片| 日韩一本色道免费dvd| 国产在线男女| 亚洲内射少妇av| 丝袜喷水一区| 国产伦精品一区二区三区视频9| 亚洲人成网站在线播| 亚洲怡红院男人天堂| 国产成人精品一,二区| a级毛片免费高清观看在线播放| 午夜免费男女啪啪视频观看| 国产视频首页在线观看| 亚洲三级黄色毛片| 一本—道久久a久久精品蜜桃钙片| 中文字幕免费在线视频6| 国产精品偷伦视频观看了| 国产美女午夜福利| 国产免费一级a男人的天堂| 国产在视频线精品| 欧美最新免费一区二区三区| 91精品国产国语对白视频| 久久精品国产亚洲av涩爱| 国产日韩一区二区三区精品不卡 | 99久久综合免费| 亚洲国产精品999| 国产视频首页在线观看| 国产在线男女| 午夜久久久在线观看| 青春草视频在线免费观看| 国产精品人妻久久久影院| 观看免费一级毛片| 女人精品久久久久毛片| 精品人妻一区二区三区麻豆| 九九久久精品国产亚洲av麻豆| 久久久久久久国产电影| 欧美日韩视频精品一区| 丰满饥渴人妻一区二区三| 人妻夜夜爽99麻豆av| 久久久久久久精品精品| 另类亚洲欧美激情| 啦啦啦在线观看免费高清www| 亚洲成人一二三区av| 国产免费福利视频在线观看| 99久久精品国产国产毛片| 免费观看av网站的网址| 一本久久精品| 国产熟女欧美一区二区| 插阴视频在线观看视频| 美女脱内裤让男人舔精品视频| 欧美日韩国产mv在线观看视频| 免费av不卡在线播放| 久久午夜福利片| 岛国毛片在线播放| 午夜福利视频精品|