• Title/Summary/Keyword: Continent

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A Change of Large-scale Circulations in the Indian Ocean and Asia Since 1976/77 and Its Impact on the Rising Surface Temperature in Siberia

  • Lim, Han-Cheol;Jhun, Jong-Ghap;Kwon, Won-Tae;Moon, Byung-Kwon
    • Journal of the Korean earth science society
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    • v.30 no.5
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    • pp.660-670
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    • 2009
  • This study examines the changes of an interdecadal circulation over the Asian continent to find cause of the surface warming in Siberia from 1958 to 2004. According to our study, there is a coherency between a long-term change of sea surface temperature in the Indian Ocean and the rapid increase of air temperature in Siberia since 1976/1977. In this study, we suggest that mean wind field changes induced by the positive sea surface temperature anomalies of the Indian Ocean since 1976/1977 are caused of inter-decadal variations in a large-scale circulation over the Asian continent. It also indicates that the inter-decadal circulation over the Asian continent is accompanied with warm southerly winds near surface, which have significantly contributed to the increase of surface temperature in Siberia. These southerly winds have been one of the most dominant interdecadal variations over the Asian continent since 1976/1977. In addition, we investigated the long-term trend mode of 850 hPa geopotential height data over the Asian continent from the Empirical Orthogonal Function (EOF) analysis for 1958-2004. In result, we found that there was an anomalously high pressure pattern over the Asian continent, it is called 'the Asian High mode'. It is thus suggested that the Asian High mode is another response of interdecadal changes of large-scale circulations over the Asian continent.

Inversion Research on the shortening and Sliding of Drape Zones between Chinese Continent Blocks by GPS Data

  • Zhixing, Du;Fanlin, Yang;Xinzhou, Wang;Xiushan, Lu;Huizhan, Zhang
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • v.1
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    • pp.401-405
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    • 2006
  • A uniform velocity field of crust can be obtained by cumulative multi-year GPS data. Then the shortening and sliding of drape zones between Chinese Continent Blocks can be researched through the velocity field and dynamics meaning is also analyzed. A model of movement and strain is created to extract displacing and rotating information of blocks in this paper. On the basis of it, the shortening vectors and sliding states of drape zones between blocks can be obtained by the model of level center of gravity moving velocity vectors between neighboring blocks. Some result show as follows. India plate jostles greatly toward north, so a complicated movement situation is formed for 14 sub-blocks. And self-deformations of inner tectosomes can be greatly reflected according to the characteristics of drape zones between tectosomes. The extrusion deformation exists between Himalaya and Qiangtang blocks. Its contraction ratio is about 20.1 $mm.a^{-1}$. However, it only is $mm.a^{-1}$ between Tarim and Zhungar. The deformation characteristics and contraction ratio of other drape zones are obviously different with the former. The movement characteristics of contraction, shear, dislocation, etc. are showed in these zones. The average contraction ratio is about 5.0 $mm.a^{-1}$. The whole trend in the west continent has a big movement toward north, and in the east continent has a small movement toward south or southeast. The strain of west continent is far bigger than that of east, and the strain of southwest is bigger than that of the southeast. It is whole showed that India plate jostles toward north-east and the south-north zone has cutting and absorbing phenomena. The total characteristics and present-day trends of deformation of inland drape zones are basically described by the sinistrorse dislocation in south-north zone and Arjin fracture, the sinistrorse shear between south china and north china, etc.

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Trends of Import and Export by Each Continent in Korea and Plans to Increase Exports (한국의 각 대륙별 수출입 동향과 수출 증대방안)

  • Choi, Soo-Ho
    • The Journal of the Korea Contents Association
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    • v.18 no.11
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    • pp.285-297
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    • 2018
  • The purpose of this study is to examine the trends of import and export of Korea by each continent and to find ways to increase export to Korea in the future. Each continent selected Asia, Europe, North America, Central and South America, and the Middle East. The analysis period was 220 months from January 2000 to April 2018, and data were collected from the KCS. Regression analysis showed that the coefficient was higher in Asia, Europe, North America, Middle East and Latin America. The markets of each continent moved independently of each other and were statistically significant at t statistic and p-value(${\leq}0.01$). As a result of this study, Asia and North America have been major export markets in Korea. Europe, the Middle East and Central and South America are emerging as new markets in Korea. In order to increase Korea's exports in the future, there is a need for continued interest in Asian markets including China & Southeast Asia.

A Gravity Characteristic of Svalbard Archipelago in Arctic by Using ArcGP Data (ArcGP 자료를 이용한 북극 스발바드 군도의 중력특성)

  • Yu Sang Hoon;Kim Chang Hwan;Hwang Jong Sun;Min Kyung Duck
    • 한국지구물리탐사학회:학술대회논문집
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    • pp.255-260
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    • 2005
  • A Gravity characteristic of Svalbard archipelago in Arctic was studied by using ArcGP data. There are situated the Dasan science station. After bouguer correction, an edge effect of free-air anomaly, which is similar to topography, are not shown at passive continent margin, and after terrain correction with GTOPO30 data, gravity anomaly increases from continent to marine. that is deep connected with rise of Moho discontinuity. The correlation of topography and free-air anomaly shows that the isostasy of continent attains a little less than marine. After filtering, the residual anomaly are shown high and low anomalies related to fracture zone in continent and base depression or thick sedimentary layer in continental slope, marine.

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Decadal Change of Frequency in Korea Landfalling Tropical Cyclone Activity (한반도에 상륙한 태풍 빈도수의 십년간 변동 특성)

  • Choi, Ki-Seon;Cha, Yu-Mi;Kim, Tae-Ryong
    • Journal of the Korean earth science society
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    • v.33 no.1
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    • pp.49-58
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    • 2012
  • Through a statistical change-point analysis, this study found that Korea landfalling tropical cyclone (TC) frequency has increased rapidly since 1981. This increase is due to the following phenomenon. When anomalous cyclone is developed in the East Asian continent, anomalous anticyclone is reinforced in the western Pacific, which is related to the eastward shift of western North Pacific high, and thus anomalous southerly is formed to Korea from low-latitudes. This anomalous southerly plays an important role as steering flow in moving TCs toward Korea. To examine the cause of the development of anomalous cyclone in the East Asian continent, this study analyzed the water equivalent of accumulated snow depth during the preceding spring (March to May). As a result, less snow depth is observed in most regions of the East Asian continent than before 1981. Therefore, anomalous cyclone in the East Asian continent in summer can be reinforced by the land heating from the preceding spring and then the steering flow of anomalous southerly that moves TCs toward Korea can be also developed to Korea from low-latitudes in summer.

On the Colonial History of African Continent : From France to China (아프리카 대륙의 식민 역사 : 프랑스부터 중국까지)

  • Kim, Tae-Hyung
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.19 no.12
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    • pp.541-551
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    • 2018
  • This paper is on the colonial history of the African continent. It was the origin of mankind, which was called "Hometown of humanity" or "Warm region" since ancient Greece and ancient Egypt. However, the place came to be the invasion target of Western powers. Western nations, based on strong military and economic power, slaughtered sturdy African men and stripped off major resources for their own interests, devastating many parts of the African continent since the 15th century. This unfortunate history seems to have met a happy ending in the mid-twentieth century, after the independence of many African nations that have been committed to national self-determination since World War II. However, African countries have not been recognized as equal partners in the international arena. They were only poor and powerless countries that could be maintained only through the aid of advanced nations like France, as before. Of course, in the 21st century, Africa has begun to be thought to be a new market with high potentiality for development. Various countries, including India, China, Russia and Brazil, as well as major European countries, which have traditionally maintained friendly relations with France, are making efforts to increase their influence in Africa. Therefore, to understand this new trend, it is necessary to give a top priority to grasp the colonial history surrounding African continent.

DNA Barcoding of Antarctic Freshwater Copepod Boeckella poppei (Crustacea: Copepoda: Calanoida: Centropagidae) Inhabiting King George Island, South Shetland Islands, Antarctica

  • Kang, Seunghyun;Jo, Euna
    • Animal Systematics, Evolution and Diversity
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    • v.36 no.4
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    • pp.396-399
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    • 2020
  • The Antarctic freshwater copepod, Boeckella poppei (Mrazek, 1901), has the widest range of distribution extending from southern South America to Antarctic continent, among all Boeckella species. Boeckella poppei is the only freshwater copepod known to be inhabiting the Antarctic continent. In present study, we analyzed the DNA barcodes of the mitochondrial cytochrome c oxidase subunit I (COI) gene of B. poppei from King George Island, Antarctica. The intraspecific genetic distances varied from 0% to 13% and interspecific genetic distances ranged from 11% to 14%. The overlap of DNA barcode gap suggests careful threshold-based delimitation of species boundaries.

The Strategies and Problems of Gangwon Province to Revitalize of the Physical Distribution on Land between South and North Korea (남북한 육상물류 활성화를 위한 강원도의 통상과제와 전략)

  • Um, Kwang-Yeol
    • International Commerce and Information Review
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    • v.8 no.4
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    • pp.177-207
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    • 2006
  • DMZ is came from the antagonism of ideology of the cold war and will of peace embodiment of Gangwon province, the only divided province in the world, at the time of opening physical distribution transportation time on ground between south and north Korea. Analyze the central plan of Gangwon province that includes Mt. Geumgang sightseeing, the Gyeongwon line and the Donghae line. As regaining the overland route with Eurasian continent that lost because of the division of Korea into north and south, We have lived as people in a island country actually for the last 60 years. we should extend the racial imagination that lean toward the ocean to the continent again. As we present the use of efficient overland distribution transportation that is endowed with the fitness of the Gangwon province's plan to make a new developing opportunity physically and mentally. we would seek the revitalization of Gangwon economy and inter Korean trade.

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An Analysis on the Facilitating Factors of Foreign Direct Investment Inflows - Focusing on National Macro Socio-Economic Factors of Developing Countries by Continent - (해외직접투자 유입의 촉진 요인 분석 - 대륙별 개발도상국 거시 사회·경제변수를 중심으로 -)

  • Kim, Moo-Soo;Lee, Chan-Hee
    • Korea Trade Review
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    • v.44 no.3
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    • pp.123-136
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    • 2019
  • This study investigates the facilitating factors of FDI (foreign direct investment) inflows in 15 developing countries of three continents (Asia, Latin America, and Africa) using fixed-effect panel regression analysis with 30-year macro socio-economic data. The facilitating factors of FDI inflows in each continent differed. In Asia, labor compensation, GDP, consumer expenditure, human capital, and export facilitated FDI inflows in decreasing order, as did export, total factor productivity, GDP, and human capital in Latin America, and investment expenditure, human capital, government expenditure, and export in Africa. Most importantly, the character of cost saving efficiency-seeking investment was very strong in Asia. Also, third-party export-oriented investment and economic growth-oriented investment were shown in Latin America and Africa, respectively.

Japan's implication & strategy to the TSR corridor (TSR에 대한 일본의 전략과 시사점)

  • Park, Eun-Kyung
    • Proceedings of the KSR Conference
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    • pp.1839-1852
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    • 2008
  • Japanese government actively took part in the TSR modernization. the amount of trade between Russia & Japan increased increasingly by 55%, as the individual income increases in Russia, it becomes a big scale consuming market, therefore Japan concentrates on lobby to push into the russian continent and also Japanese government will participate in aggressively to the cooperation with Russian government, loaning to the TSR modernization & trade insurance, high speed train introduction, and introduction of transport system. this study checks and analyzes the japan's concrete methods & strategy to advance to the continent, and also this case can be applied to South korea, if TKR corridor is continuously blocked. I want to review the cooperation of north & south, and the project of continental railways.

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