• 제목/요약/키워드: West-southern Coast

검색결과 147건 처리시간 0.025초

한반도 남부 해안의 융기율 비교 (Comparison of Uplift Rate in the Southern Coast of the Korean Peninsula)

  • 이광률;박충선
    • 한국지형학회지
    • /
    • 제26권2호
    • /
    • pp.55-67
    • /
    • 2019
  • This study tries to reveal and compare uplift rates in the southern coast of the Korean Peninsula, based on absolute ages from coastal terrace on the coast. The uplift rate in the East Coast from previous study ranges from 0.258 to 0.357 m/ka with a median rate of 0.262 m/ka and shows an increase trend from north to south. Median uplift rate of 0.082 m/ka with minimum and maximum rates of 0.053 m/ka and 0.127 m/ka, respectively, is calculated in the South Coast from previous and this studies. The uplift rate in the West Coast from 3 absolute ages in this study is 0.082~0.112 m/ka with a median rate of 0.090 m/ka. Based on these uplift rates in the southern coast of the Korean Peninsula, it can be concluded that since MIS 5, the East Coast has experienced 3 to 4 times faster uplift rate than the West and South Coasts. However, this study suggests that more discussion on whether these uplift rates are long-term tectonic movement associated with tilted warping movement since the Tertiary or short-term tectonic movement associated with isostatic rebound due to sea level change since the Last Interglacial is needed.

Predicting the Invasion Pathway of Balanus perforatus in Korean Seawaters

  • Choi, Keun-Hyung;Choi, Hyun-Woo;Kim, Il-Hoi;Hong, Jae-Sang
    • Ocean and Polar Research
    • /
    • 제35권1호
    • /
    • pp.63-68
    • /
    • 2013
  • The European Common Barnacle Balanus perforatus Brugiere (Crustacea, Cirripedia) has been introduced into the east coast of Korea, presumably via the ballast water of ships. The species has since been spreading along both the northern and southern coast to the east, most likely due to alongshore currents. We predicted the potential range expansion of Balanus perforatus in Korean waters using Genetic Algorithm for Rule-set Prediction (GARP), an environmental niche modeling technique. The results show that much of the southern coastal waters of Korea could be colonized by the spread of the nonindigenous species, but that the west coast is unlikely to be invaded. More sampling on the west coast would enhance the predictability of the model. To our knowledge, this is the first report of its kind for predicting marine nonindigenous species in Korean waters using GARP modeling.

한국연안에 있어서 기상 교란에 의한 해면변화 I. 태풍 빌리호(1970년)와 남 서해안의 이상고조현상 (On the Variation of Sea Level Due to Meteorological Disturbances on the Coast of Korea. I. Storm Surges Caused by Typhoon Billie, 1970, on the West and South Coasts of Korea)

  • 황진풍
    • 한국해양학회지
    • /
    • 제6권2호
    • /
    • pp.92-98
    • /
    • 1971
  • 본고는 지난 12년동안 한국연안에 내습한 태풍 및 각 검조소에 출현한 매년의 최고 이상고조와 1970.8.29∼9.2에 있었던 태풍 빌리호 내습시 남 서해안의 각 검조소에서 얻은 자료에 의하여 해면변화에 대한 사례조사를 시도한 것이다. 한국연안은 매년 빈번한 기상교란 (태풍, 저기압등) 에 의하여 이상고조 또는 기상해일현상이 발생, 항만이나 연안지대에서는 적지 않은 피해를 받고 있으나 이에 관한 조사는 전혀 없었으며, 이후 연안지대의 고도이용이나 연안방재를 위하여 먼저 정확한 사례조사가 필요하다고 본다.

  • PDF

서해 지역별 굴 Crassostrea gigas 성장 특성, 유생 출현량 및 채묘율 (Regional Variations in Pacific Oyster, Crassostrea gigas Growth and the Number of Larvae Occurrence and Spat Settlement along the West Coast, Korea)

  • 임현정;백상호;임매순;최은희;김수경
    • 한국패류학회지
    • /
    • 제28권3호
    • /
    • pp.259-267
    • /
    • 2012
  • Due to the oil spill incident in December 2007, every facility of oyster culture was removed in western coast especially in Taean and Seosan. To restore oyster resources in Taean and Seosan, we brought oyster seeds from southern area and monitored their growth. In addition we monitored the culture environment throughout the year, and observed the number of oyster larvae and attached spats on collectors during summer. The factors of water environment were appropriate for oyster culture in both study area. The growth of shell height was larger in Uihang-ri, Taean than Jungwang-ri, Seosan. Spawning was more intensive in a short time in Jungwang-ri, Seosan than Uihang-ri, Taean. The number of oyster larvae and spats of collectors were much more in Jungwang-ri, Seosan than Uihang-ri, Taean. This study showed that transplantation of healthy oyster seeds from southern area can be a way of restoration of oyster resources in western coast. In addition, systematic approaches are necessary by building a better understanding of regional characteristics to restore and enlarge the oyster culture farms in western coast. In summary Uihang-ri, Taean will be appropriate for cultivation farms and Jungwang-ri, Seosan for seedling grounds to increase oyster culture productivity.

東北 아시아 海域의 暴風海溢 硏究 I. 暴風海溢 年別 極値 分析 (A Study of Storm Surges of the Seas in North eastern asia I. Analysis of Yearly Maximum Surge)

  • 이진경;오임상
    • 한국해양학회지
    • /
    • 제29권1호
    • /
    • pp.28-41
    • /
    • 1994
  • 우리 나라와 일본, 러시아의 총 44개 관측점에서의 수위 자료에서 조석을 제거, 해입을 계산하여 연별최대양의 해입값, 최대음의 해이값을 구하고 그 값들의 평균을 구하여 각 해안에서 발생하는 해익의 특성을 고찰하였다. 우리 나라 의 경우는 양의해 익과 음의해익 모두 그 진폭이 서해안에서 크고 남해안과 동해안으로 갈수록 점차 줄 어드는 양상을 보였다. 각 관측점에서 발생한 양의해익과 음의 해익의 진폭의 평균을 비교해 보면 서해안의 경우는 음의 해익의 진폭이 양의 해익의 진폭보다 더 크고, 우 리 나라 의 남해안과 동해안 또 일본 서해안의 경우는 그 반대였다. 또한 동해에서는 북부 러시아 해안에서는 해익이 남부 일본 서해안에서는 해익에 비해 상대적으로 큰 결과를 보였다. 국내 각 관측점간의 해익의 연중 최대치를 비교해 본 바에 의하면, 서 해안에서 양의 해익 최대치가 나타난 것은 열대성 저기압에 의한 강풍의 결과이고, 남 해나 동해에서 나타난 경우는 여름철 태풍에 의한 결과였다. 음의 해익의 경우는 거의 대부분 서해, 특히 인천에서 열대성 저기압에 의한 연중 최대치가 나타났다.

  • PDF

남한 지역에서 여름철 맑은 날의 대기 오염물 확산에 대한 수치적 연구 (A Numerical Study of Atmospheric Pollutant Dispersionon over South Korea on Sunny Summer Days)

  • 이태영;김승범
    • 한국환경과학회지
    • /
    • 제5권4호
    • /
    • pp.411-427
    • /
    • 1996
  • A Lagrangian dispersion model has been developed to study the transport of atmospheric pollutants over the southern Korean peninsula on sunny summer days. A mesoscale atmospheric model has been employed to provide the wind fields and information for turbulent diffusion for the calculation of trajectories using a conditioned particle technique. The model has been applied to the simulation of the transport of atmospheric pollutants emitted from five sources in the coastal locations under various synoptic scale winds. Under calm synoptic scale condition, the particles emitted during daytime are mixed vertically and transported toward inland by sea-breeze, according to the model simulation. The particles are then transported upward at she sea-breeze front or by the upward motion over the mountain, and some particles show tendency of returning toward the coast by the return flow of the sea-breeze circulation. The particles are found to remain over the peninsula throughout the integration period under calm synoptic scale condition. When there is westerly synoptic scale winds the particles emitted in the west coast can reach the east coast within a day of faster depending on the speed. With a synoptic scale southerly wind of 5 m/s, most of the particles from the fine sources are advected toward inland during daytime. During nighttime, significant portion of particles released in the west coast remains over the land, while most particles released in the east coast move toward the sea to the east of the middle peninsula.

  • PDF

한국해역의 식물플랭크톤에 관한 연구 II. 한국연안수역의 식물플랭크톤 (Phytoplankton Studies In Korean Waters II. Phytoplankton In The Coastal Waters Of Korea)

  • 최상
    • 한국해양학회지
    • /
    • 제2권1_2호
    • /
    • pp.1-12
    • /
    • 1967
  • 바다의 플랭크톤은 장소와 시기에 따라 출현종류와 수량에 많은 변동이 있고, 이것들의 종적조성, 출현수량 또는 그 분포는 바다의 생태계를 구명하고, 해역의 생산성을 계측하는데 극히 중요한 기초적지식이 될뿐아니라 어업과 바다의 양 증식 에도 직접적인 관련을 갖는 중요한 자료가 된다.

  • PDF