• Title/Summary/Keyword: coastal areas

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Disaster Characteristics Analysis of Busan Coastal Areas by Typhoon Mae-mi (부산 연안지역에서의 태풍 매미 저해특성 분석)

  • SEO KYU WOO;KIM GA YA;LEE IN ROCK
    • Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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    • 2004.05a
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    • pp.111-116
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    • 2004
  • We surveyed the coastal structure damages due to the typhoon 'Mae-mi' which heavily struck Korean peninsula in September 12, 2003. The survey revealed the typhoon induced high tides and strong winds were the main causes especially in Busan areas. Though some experimental real time coastal monitoring stations captured the typhoon movements at the critical time, more systematic and complete systems should be implemented to save human lives and properties from huge typhoon disasters.

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Nutrients In Coastal Water Of Korea During Summer Of 1977 (여름철 한국 연안해수중의 영양염 함량)

  • Lee, Kwang Woo;Kwak, Hi-Sang;Lee, Soo Hyung;Lee, Dong Soo
    • 한국해양학회지
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    • v.13 no.2
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    • pp.17-25
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    • 1978
  • General water quality parameters were measured, as a base-line study, for possible water pollution problems in the coastal waters of some important harbors and near-sea industrial complexes all around coastal zones of Korea from June 1 to October 15, 1977. The areas surveyed were near Mugho-Samcheog, Ulsan, Jinhae-Masan, Yeosu-Gwangyang, Mogpo, Gunsan and Incheon. Among the surveyed coastal areas, the Ulsan and the Jinhae-Masan areas showed high levels of dissolved oxygen, pH, COD and nutrients. Particularly, the surface waters of the Ulsan inner bay represented COD 15.6mg/l and NO$\sub$2/-N 110$\mu\textrm{g}$/l. The surface layer of the Masan bay displayed pH 8.92 and NO$\sub$3/-N 372$\mu\textrm{g}$/l, while 309$\mu\textrm{g}$/l of PO$\sub$4/-P was recorded in the surface of the Haengam bay. In general it is shown that some coastal areas are presenting signs of pollution from man's activities.

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Study on the Institutional Limitations and Improvements for Effective Management of Coastal Wetlands (국내 연안습지 보전 정책의 법제도적 한계와 개선방향 고찰)

  • Yook, Keunhyung
    • Journal of Wetlands Research
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    • v.15 no.4
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    • pp.477-484
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    • 2013
  • In 1999, Wetlands Conservation Act was enacted for the domestic implementation of the Ramsar Convention in Korea. According to the Act, wetlands have been managed by the Ministry of Environment and the Ministry of Oceans and Fisheries(MOF). In the field of coastal wetland of which MOF is in charge, starting with the designation of Muan coastal wetlands as protected area in 2001, there are 12 wetland conservation areas up to $218.96km^2$. Even though there has been rapid growth of protected areas, it is time to give attention to the effective implementation of wetland conservation policies. This study aims to analyze institutional and operational problems related to wetland management and give some recommendations for the improvement of the wetland conservation policy and legal framework.

A Study of the Intelligent Coastal Surveillance System using EO/IR Vessel Image Classification (선박의 EO/IR 영상식별을 이용한 연안 감시 체계의 연구)

  • Jang, Won-Seok;Jung, Dong-Han;Kim, Joo-Yong
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2018.05a
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    • pp.230-231
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    • 2018
  • Ports and coastal areas that serve as national corridors have threats such as smuggling ships, enemy infiltration ships and pirate ships. To prevent intrusion of intrusive vessels, a system is needed to continuously monitor the coastal area and detect their intrusion. However, it is difficult for surveillance personnel to identify threatened vessels while monitoring large coastal areas. In this paper, we propose a system that can monitor coastal and harbor area and automatically detect ships entering the Navigation Inhibit Area to generate alarms and classify the types of ships by image classification.

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The Exploitation of World Fishery Resources for 10 Years under the New Regime in the Sea (신해양질서 10년후 세계어업자원 이용동향)

  • 이장욱;허영희
    • The Journal of Fisheries Business Administration
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    • v.23 no.1
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    • pp.43-87
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    • 1992
  • In this paper, state of exploitation of world fishery resources after 10 years under the new regime in the sea, called the era of exclusive economic zone (EEZ) expending up to a 200 nautical miles from coastal line, was reviewed to determine effect from establishing EEZ in the world fishery production and its export/import volume based on the fishery statistics annually published by the Food and Agriculture Organization (FAO) of United Nation. The world total production from marine living resources had a trend showing a waned increase during 1970's when most of coastal states were translated into the reality of EEZ. From mid-1980's onwards, it increased rapidly, reaching about 85 million tons . Such increase in production was basically from the Pacific Ocean, accounting for more than 60% of the world total production. Fishing areas where showed increase in the production after the new regime in the sea were the southwestern Atlantic (FAO area 41) , the eastern Indian (FAO area 57) and the whole fishing areas in the Pacific except the eastern central Pacific (FAO area 77). Increase in the production from distant-water fishing countries came from the regions of the southwest Atlantic (FAO area 41) and the southwest Pacific (FAO area 81) . The production from coastal states was up from the regions of the eastern Indian (FAO area 57) , the northwest and northeast Pacific (FAO areas 61 and 67) and the southeast Pacific (FAO area 87) . It was likely that the exploitation of the fishable stocks was well monitored in the areas of the northwest Atlantic (FAO area 21) , the eastern central Atlantic (FAO area 34) and the northeast Pacific (FAO area 67) through appropriate management measures such as annual harvest level, establishment of total allowable catch etc. The marine fisheries resources that have made contribution to the world production, despite expansion of 200 EEZ by coastal states, were sardinellas, Atlantic cod, blue whiting and squids in the Atlantic Ocean : tunas which mainly include skipjack, yellowfin and bigeye tuna, croakers and pony fishes in the Indian Ocean : and sardine, Chilean pilchard, Alaska pollock, tunas (skipjack and yellowfin tuna) , blue grenadier and blue whiting including anchoveta in the Pacific Ocean. It was identified that both fishery production and its export since introduction of the new regime in the sea were dominated by such coastal states as USA, Canada, Indonesia, Thailand, Mexico, South Africa and Newzealand. But difficulties have been experienced in the European countries including Norway, Spain, Japan and Rep. of Korea. Therefore, majority of coastal states are unlikely to have yet undertaken proper utilization as well as rational management of marine living resources in their jurisdiction during the last two decades. The main target species groups which led the world fishery production to go up were Alaska pollock, cods, tunas, sardinellas, chub and jack mackerel and anchoveta. These stocks are largely expected to continue to contribute to the production. The fisheries resources which are unexploited, underexploited and/or lightly exploited at present and which will be contributed to the world production in future are identified with cephalopods, Pacific jack mackerel and Atlantic mackerel, silver hake including anchovies. These resources mainly distribute in the Pacific regions, especially FAO statistical fishing areas 67, 77 and 87. It was likely to premature to conclude that the new regime in the sea was only in favour of coastal states in fishey production.

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The Methods of Coastal Disaster Mapping Using Digital Map (수치지도를 이용한 연안재해지도 작성 방안)

  • Jeong, Jong-Chul
    • Journal of Environmental Impact Assessment
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    • v.16 no.5
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    • pp.373-379
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    • 2007
  • Natural hazards such as typhoon, flood, landslide affect both coastal and inland areas more often according to increasement of severe and unusual weather. To provide adequate coastal disaster mitigation strategies, coastal disaster prevention system using GIS is very useful. Application methods of digital map on this issue was discussed in this study. For developing of coastal disaster prevention system, the data structures related to disaster monitoring is needed to be revised for interdisciplinary framework. To improve the current coastal disaster mapping methods, GIS based new model for coastal disaster mapping was suggested. In this study, coastal GIS showed the attribute data and structures of coastal disaster mapping.

Long-term Variation and Characteristics of Water Quality in the Garolim Coastal Areas of Yellow Sea, Korea (가로림연안 수질환경의 특성과 장기변동)

  • Park, Soung-Yun;Kim, Hyung-Chul;Kim, Pyoung-Joong;Park, Gyung-Soo;Ko, Joen-Young;Jeon, Sang-Baek;Lee, Seung-Min;Park, Jong-Soo
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.15 no.4
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    • pp.315-328
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    • 2009
  • Long-term trends and distribution patterns of water quality were investigated in the Garolim coastal areas of Yellow Sea, Korea from 1998 to 2007. Water samples were collected at 3 stations and physicochemical parameters were analyzed including water temperature, salinity, suspended solids(SS), chemical oxygen demand(COD), dissolved oxygen(DO) and nutrients. Spatial distribution patterns were not clear among stations but the seasonal variations were distinct except pH and ammonia. The trend analysis by principal component analysis(PCA) during twenty years revealed the significant variations in water quality in the study area. Annual water qualities were clearly classified into 4 clusters by PCA; year cluster 1997, 1998 and 2000-2002, 1999 and 2003-2006/2008. By this multi-variate analysis the annual trends were summarized as follows; In recent years, salinity increased, whereas dissolved inorganic nitrogen, nitrate nitrogen and COD decreased and water quality generally continued to be in good condition in Gsrolim coastal areas without inflow of freshwater from land. Garolim coastal areas are required to be conserved continuously as important coastal areas for fisheries.

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Surveys of Gynaecotyla squatarolae and Microphallus koreana (Digenea: Microphallidae) Metacercariae in Two Species of Estuarine Crabs in Western Coastal Areas, Korea

  • Lee, Hye-Jung;Chai, Jong-Yil;Lee, Jin-Woo;Jin, Ho;Min, Kwan-Hong;Cho, Yong-Jun;Seo, Min
    • Parasites, Hosts and Diseases
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    • v.48 no.1
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    • pp.81-83
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    • 2010
  • To figure out the geographical distribution of Gynaecotyla squatarolae and Microphallus koreana metacercariae in Korea, shore crabs of southwestern coastal areas were examined. Eight coastal areas in Inchon-si (A), Gyeonggi-do (B), Chungcheongnam-do (C, D, and E), Jeollabuk-do (F), and Jeollanam-do (G and H) were selected, and 2 kinds of crabs, Macrophthalmus dilatatus and/or Macrophthalmus japonicus, were caught. After transportation to the laboratory, 15 crabs per each group were grouped and ground in a mortar and pestle, and examined for microphallid metacercariae. In M. dilatatus, G. squatarolae metacercariae were recovered from 3 (C, E, and H) out of 6 regions, but M. koreana metacercariae were not recovered. In the case of M. japonicus, G. squatarolae metacercariae were recovered from 6 (B, D, E, F, G, and H) of 7 areas surveyed, and M. koreana matacercariae were detected from 5 regions (A, B, D, F, and H). These results indicate that the life cycle of G. squatarolae is maintained in the western coastal areas using M. dilatatus and M. japonicus as intermediate hosts, while that of M. koreana is maintained only using M. japonicus.

Landscape Ecological Analysis of Coastal Sand Dune Ecosystem in Korea (해안사구생태계의 경관생태분석)

  • Kim, Jae-Eun;Hong, Sun-Kee
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.12 no.3
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    • pp.21-32
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    • 2009
  • Coastal sand dune area is the important ecosystem as an ecotone which located between coastal area and terrestrial area. Moreover, it is very complicate landscape that have geomorphological interaction between erosion and accumulation of sand. Therefore, it is necessary to understand the sand dune ecosystem in view point of landscape scale including background landscape affecting origin of sand dune. Landscape ecological approach in the complicate ecosystem already started in developed countries, and it is applied to land management and biodiversity conservation strategies even in national scale. In this paper, landscape ecological analysis using landscape pattern analysis was carried out on 7 study areas (Yellow Sea : Hakampo and Doksan, South Sea : Namyeol and Balpo, East Sea : Hosan, Hupo and Goraebul) in Korean coastal sand dune ecosystem. Landscape elements were composed by 9 elements in these study areas. Major background landscape elements was the forest land and agricultural field. Namyeol (S06) has larger patch landscape compare to other areas. In patch shape indices, Hupo (E10) shows more complicate patch shapes. The high landscape heterogeneity showed in the Doksan sand dune area and that of Hosan. It shows that these areas were composed by various patch types. However, using landscape indices have to use very carefully because several variables have influence to the result such as scale and spatial pattern of study areas. Although landscape analysis through landscape indices shows sometimes difficult to explain the ecosystem, landscape scale approach on ecosystem assessment still useful to interpret in ecological process in large range of habitat.

Time Series Analysis by Coastline Change Using Aerial Photographs (항공사진을 이용한 해안선 변화에 대한 시계열 분석)

  • Kim, Yong-Suk;Hong, Soon-Heon
    • The Journal of the Korea Contents Association
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    • v.7 no.3
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    • pp.160-167
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    • 2007
  • Due to the drastic growth of national economy and the development of overall territory, the shapes of national land and coastal areas are changing from day to day. To detect such changes in lands and coasts efficiently, as well as to establish an appropriate usage plan, it is necessary to secure a monitoring system for coastal areas based on the observation and analysis of the change in coastlines. Currently, looking at the field of producing national coastlines, the lengths of coastlines are inaccurate due to the vague definition of dividing coastline boundaries and insufficient observation data. The level of accuracy and reliability of previous data are also in the very low. This paper used aerial photographs with certain intervals to monitor the change in coastal areas of Songjeong, Haeundae, Kwanganri, Songdo and Dadaepo. The local area subjected for this research was limited to areas near Busan.