• 제목/요약/키워드: west coast of Korea

검색결과 892건 처리시간 0.028초

시간차를 지닌 단층파괴 활동이 동해안 처오름 높이에 미치는 영향 (The Effect of Fault Failure with Time Difference on the Runup Height of East Coast of Korea)

  • 정태화;손상영
    • 한국해안·해양공학회논문집
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    • 제32권4호
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    • pp.223-229
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    • 2020
  • 시간차를 지닌 단층파괴 활동은 지진해일의 초기파형 생성에 영향을 끼치며, 이로 인해 해안에서의 처오름 높이에도 변화를 준다. 이러한 단층파괴 활동이 처오름 높이에 미치는 영향을 검토하기 위하여 일본 서해역에 다수의 가상 단층파괴를 가정하여 수치모의를 수행하였다. 소단층들이 해안선에 평행하게 위치한 경우에는 시간차를 지닌 단층파괴가 처오름 높이에 미치는 영향은 미미했으나, 해안선에 수직으로 위치해 있는 경우에는 초기파형의 중첩효과가 두드러지게 발생하여 해안선에서 처오름 높이가 증가하였다.

한국연안 이상고수온과 저수온의 지속성 기간의 정량화 (Quantifying of the Persistent Periods of the Positive and Negative Sea Surface Temperature Anomalies at the Coastal Areas of the Korean Peninsula)

  • 서영상;황재동;장이현;강용균
    • 한국환경과학회지
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    • 제10권2호
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    • pp.167-171
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    • 2001
  • The magnitudes of sea surface temperature (SST) anomalies at 13 coastal stations along the Korean peninsula in the summer and winter for the past 29years (1969-1997) are more larger than those in the spring and autumn. The periods of positive SST anomalies (negative SST anomalies) longer than 1$^{\circ}C$ were 75(74.5) months in the eastern coast of Korea, 47.8(51.6) months in the southern coast of Korea and 69.5(69.8) months in the western coast of Korea during the past 348 months (1969-1997). The predominant periods of the low-pass filtered monthly SST anomalies are 3 years or 13 months, even another predominant period is 24 months. The spatial variation of SST anomalies were confined by regional seas of the Korean peninsula, such as the East Sea, the South Sea and the West Sea itself.

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충남 고정리의 하계 해조상 (Summer Algal Flora of Gojeong-Ri, West Coast of Korea)

  • 유순애
    • Journal of Plant Biology
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    • 제22권4호
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    • pp.135-140
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    • 1979
  • The marine benthic algae of Gojeong-Ri was investigated in a floristic aspect. As a result, 34 species, 7 blue-green, 14 red, 6 brown and 7 green algae were identified as a summer flora from the area. Among them, Sirocoleum kurzii (blue-green alga), Ralfsia clavata (brown alga), Pseudulvella consociata and Cladophora speciosa (green algae) were known as new records to Korea.

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한국 서해에 출현하는 대구(Gadus macrocephalus)의 성숙과 산란 (Maturation and Spawning of the Pacific Cod Gadus macrocephalus in the West Coast of Yellow Sea of Korea)

  • 최동혁;윤병일;김맹진;이승환;이승종
    • 한국수산과학회지
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    • 제54권1호
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    • pp.46-52
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    • 2021
  • The maturation and spawning of Pacific cod Gadus macrocephalus were inversigated using 2,415 samples collected monthly from January 2017 to December 2019, in the Yellow Sea of Korea. We analyzed monthly changes in gonadosomatic index (GSI), maturity stage, egg diameter (mm), the relations fecundity and total length (cm). The spawning period was February to March. Fecundity varied between 334,836 and 2,099,600 eggs. The relationship between the fecundity and TL of fish was expressed in F=186.86TL2.0954 (R2=0.7359). The percentage of sexually mature females estimated from a logistic function was over 50%, 75% and 97.5% for the size (TL) 39.3, 44.8 and 57.7 cm.

한국 연근해 백상아리와 상어류의 분포 (Distribution of the White Shark, Carcharodon carcharias and Other Sharks around the Korean Waters)

  • 최윤
    • 한국어류학회지
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    • 제21권sup1호
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    • pp.44-51
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    • 2009
  • Greate white sharks, Carcharodon carcharias, are found in almost all the temperate and tropical coastal waters around the world. There have been 19 appearances reported in Korean coastal waters since June 1996 and seven shark attacks have been reported. There are about 400 species of sharks in the world, and 41 species of them have been found in Korean coastal waters. Thirteen of them belong to the Carcharhinidae family, and five of them belong to the Squalidae family. Of these sharks, 15 species of them live off of the East coast, 18 species live off of the West coast, and the other 40 species are distributed around Jeju Island and the South coast. Eleven species of them, including the great white shark, live off of all the coastal waters of Korea.

태안 의항 해안의 홀로세 해수면 변화와 지형 형성과정 (Holocene Sea Level Change and Geomorphic Process of the Uihang Coast in Taean)

  • 이광률
    • 한국지형학회지
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    • 제28권4호
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    • pp.31-39
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    • 2021
  • Gaemok, the place name of Uihang-ri, Sowon-myeon, Taean-gun, Chungnam, indicates a tombolo. This study estimated the Holocene sea level change and development process of the coastal landforms of the Gaemok and Hwanyeong Tombolos in the Uihang coast. The tombolos seemed to form at approximately 3.4 ka and the average sea level at that time was estimated to be higher than that of the present by ca. 1 m. The Gaemok area was a separated island from the Taean peninsula during the Holocene Climatic Optimum. At approximately 3.4 ka when the sea level rose again after the fall, the Gaemok area was tied to the land by formation of the Gaemok and Hwanyeong Tombolos. The falling or fluctuating sea levels after 3.4 ka have shaped the present coastal landforms.

갯벌참굴 (Crassostrea gigas) 양식을 위한 부착기질별 하나굴 종묘 생산과 수평망식 시설을 이용한 배수체별 치패 성장 비교 (The Production Efficiency of Cupped Oyster Crassostrea gigas Sprat According to Clutch and Growth Comparing Diploid and Triploid Oysters in Off-bottom Culture for Tidal Flat Utilization)

  • 임현정;이태식;조필규;백상호;변순규;최은희
    • 한국수산과학회지
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    • 제44권3호
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    • pp.259-266
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    • 2011
  • To produce cupped oyster sprat consistently, we investigated the efficiency of nine settlement substrates using selective breeding of Pacific oyster Crassostrea gigas, with the goal of popularizing off-bottom culture on the west coast of Korea. We also compared the growth and survival of selectively bred sprat (diploid) with triploid sprat from an off-bottom culture system. Considering, the attachment rate and detachment efficiency, producing cupped oyster in a polypropylene gunny bag proved to be the most effective method. There were no differences in shell growth or total weight between the diploids from selective breeding and triploids from off-bottom culture for 5 months. However, the survival rate was 8 times higher in the diploids than the triploids. Transplanting sprat from selective breeding is one way to restore oyster farms and nurture off-bottom culture along the west coast.