• 제목/요약/키워드: world ocean

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The Indian Ocean Scenario in the 14th Century Latin Crusade Tract: Possibilities of a World Historical Approach

  • Chakravarti, Ranabir
    • Asian review of World Histories
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    • 제3권1호
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    • pp.37-58
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    • 2015
  • The paper examines, in the light of current historiography, the recent trends in the application and applicability of the World Historical studies on the Indian Ocean scenario. Calling for the combination of the breadth of the World Historical studies with the analysis of a historical scenario in its specific spatio-temporal context-instead of a synchronic approach-the present study takes a close look at commerce and politics in the western Indian Ocean in the light of an early 14th century Latin Crusade tract, How to Defeat the Saracens by William of Adam (Guillelmus Ade, Tractatus quomodo Sarraceni sunt expugnandi), a Dominican friar. The text offers remarkable insights into the interlocking of the Indian Ocean and the South Asian subcontinent with the Mamluk Sultanate, the Ilkhanid realm and the Crusades. The paper argues for what is now termed as braided and connected histories.

해상운임에 영향을 미치는 주요 요인에 관한 연구 (Analysis of the Factors Influencing the Ocean Freight Rate)

  • 김명희
    • 한국항해항만학회지
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    • 제46권4호
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    • pp.385-391
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    • 2022
  • 본 연구에서는 수요 및 공급요인 외 해상운임에 영향을 주는 다양한 변수들을 발굴하고자 다변량 시계열분석을 수행해 보았다. 우선 종속변수에는 해상운임을 대용할 변수로 Shipping Intelligence에서 제공하고 있는 종합운임지수(ClarkSea Index), 벌크선운임(Clarksons Average Bulker Earnings), 탱커선운임(Clarksons Average Tanker Earnings) 등을 활용하였다. 선행연구를 통해 해상운임에 영향을 미칠 것으로 예상되는 세계 해상물동량(World Seaborne Trade), 세계 선복량(World Fleet), 유가(Brent Crude Oil Price), 세계 GDP성장률(GDP World), OECD 산업생산성장률(Industrial Production OECD), 금리(US$ LIBOR 6 Months), OECD 인플레이션(CPI OECD) 등을 독립변수로 설정하여 회귀분석을 수행해 보았다. 데이터는 시계열자료로 1992년부터 2020년까지의 연데이터로 구성하였다. 분석결과 종합운임지수에는 해상물동량과 유가가, 벌크선운임에는 해상물동량만이, 탱커선운임에는 해상물동량, 유가, 산업생산성장률, 인플레이션 등이 통계적으로 유의미한 영향을 미치는 것으로 나타났다.

Assessment of New High-resolution Regional Climatology in the East/Japan Sea

  • Lee, Jae-Ho;Chang, You-Soon
    • 한국지구과학회지
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    • 제42권4호
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    • pp.401-411
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    • 2021
  • This study provides comprehensive assessment results for the most recent high-resolution regional climatology in the East/Japan Sea by comparing with the various existing climatologies. This new high-resolution climatology is generated based on the Optimal Interpolation (OI) method with individual profiles from the World Ocean Database and gridded World Ocean Atlas provided by the National Centers for Environmental Information (NCEI). It was generated from the recent previous study which had a primary focus to solve the abnormal horizontal gradient problem appearing in the other high-resolution climatology version of NCEI. This study showed that this new OI field simulates well the meso-scale features including closed-curve temperature spatial distribution associated with eddy formation. Quantitative spatial variability was compared to the other four different climatologies and significant variability at 160 km was presented through a wavelet spectrum analysis. In addition, the general improvement of the new OI field except for warm bias in the coastal area was confirmed from the comparison with serial observation data provided by the National Fisheries Research and Development Institute's Korean Oceanic Data Center.

CO2 EXCHANGE COEFFICIENT IN THE WORLD OCEAN USING SATELLITE DATA

  • Osawa, Takahiro;Masatoshi, Akiyama;Suwa, Jun;Sugimori, Yasuhiro;Chen, Ru
    • 대한원격탐사학회:학술대회논문집
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    • 대한원격탐사학회 1998년도 Proceedings of International Symposium on Remote Sensing
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    • pp.49-57
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    • 1998
  • CO2 transfer velocity is one of the key parameters for CO2 flux estimation at air - sea interface. However, current studies show that significant inconsistency still exists in its estimation when using different models and remotely sensed data sets, which acts as one of the main uncertainties involved in the computation of CO2 exchange coefficient between air - sea interface. In this study, wind data collected from SSM/I and scatterometer onboard ERS-1, in conjunction with operational NOAA/AVHRR, are applied to different models for calculating CO2 exchange coefficient in the world ocean. Their interrelationship and discrepancies inherent with different models and satellite data are analyzed. Finally, the seasonal and inter-annual variation of CO2 exchanges coefficient for different ocean basins are presented and discussed.

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The Periplus of the Erythraean Sea : A Network Approach

  • SELAND, Eivind Heldaas
    • Asian review of World Histories
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    • 제4권2호
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    • pp.191-205
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    • 2016
  • The Periplus of the Erythraean Sea is a Roman period guide to trade and navigation in the Indian Ocean. Justly famous for offering a contemporary and descriptive account of early Indian Ocean trade, the work has been subject to and a point of departure for numerous studies. Its extensive influence on scholarship is, however, also problematic, as it reflects the limited information and cultural and personal bias of its unknown author. Arguably this might have led scholars to overemphasise so-called western or Roman participation in early Indian Ocean trade. Network analysis allows us to map, visualize and measure interconnectedness in the Periplus Maris Erythraei. Many of these connections are not explicitly mentioned in the text, but by connecting not only places with places, but also products with places that export and import them, we get a partly different impression of Indian Ocean trade from that conventionally gathered from the Periplus. It allows us to ask questions about the relationship between coastal cabotage and transoceanic shipping, to identify regional trading circuits, and unexpected centres of long-distance exchange.

남태평양 해양의 잠재력과 우리나라의 새로운 연구개발 투자 분야에 대한 고찰 (An Overview of Potentials in the South Pacific and the New R&D Investment Challenges)

  • 권문상;노재훈;이미진
    • Ocean and Polar Research
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    • 제27권4호
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    • pp.419-431
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    • 2005
  • With the draining of land resources, and rising new economic and resources expansionism, finding a new and yet to be developed ${\ulcorner}treasure{\lrcorner}$ is often a fierce and competitive challenge among many nations. This is especially true for Korea confronted with its urgent needs to find new resources and strategy to maintain the current pace of societal demand and economic development in this often impatient and rapidly progressing world. The ocean world in the South Pacific provides potentials to quench both orders with promises of new ${\ulcorner}treasure{\lrcorner}$ of living and ecosystem resources such as new fisheries and new bioactive products as well as providing alternative aesthetic, recreational resources and critical informations on various societal problems such as extreme weather conditions and early wining of the consequences resulting from global environmental changes.