• Title/Summary/Keyword: coast

Search Result 5,127, Processing Time 0.027 seconds

Marine Macro-algae of Orissa, East Coast of India

  • Rath, Jnanendra;Adhikary, Siba Prasad
    • ALGAE
    • /
    • v.21 no.1
    • /
    • pp.49-59
    • /
    • 2006
  • A total of twenty one species of marine macro-algae were reported from 460 kms long Orissa coast in the east coast of India. Of these 9 species belongs to Chlorophyta, 2 to Phaeophyta and 10 to Rhodophyta. The low species richness compared with southern and western coasts of India was due to lack of rocky and/or coral substratum. Enteromorpha usneoides and Gelidium divaricatum were reported first from India. Enteromorpha linza, E. clathrata, Colpomenia sinuosa, Dictyota dichotoma, Catenella impudica, Compsopogon aeruginosus and Grateloupia lithophila were the new records for Orissa coast.

Response Activities for Tar Ball Pollution from the 'Hebei Spirit' Oil Spill in the Southwestern Sea of Korea (서남해역에서 허베이스피리트호 원유유출 사고에 의해 생성된 타르볼 방제작업)

  • Cho, Hyun-Jin;Kim, Jeong-Yeop;Yang, Mun-Chul;Seo, Kang-Ryul;Min, Nam-Gi;Im, Sung-Huk;Jeon, Sung-Gun;Kim, Hee-Sik;Kim, Young-Hwa;Kim, Gi-Hun;Chang, Sun-Hee
    • Journal of the Korean Society for Marine Environment & Energy
    • /
    • v.12 no.4
    • /
    • pp.279-283
    • /
    • 2009
  • Approximately 12,547 kL of oil from the tanker 'Hebei Spirit' released into the western sea of Korea, which subsequently reached and covered extensive areas of the western coastlines of Korea. In the following days great numbers of tar balls hit the southwestern coast. Three different cleanup methods were used to mediate the southwestern coastline tar ball pollution by Korea Coast Guard (KCG) net setting, manual pick up, and sweeping them up. Net setting was useful in protecting coastlines from being hit by tar balls. The cold weather in winter conditions helped the tar ball response efforts because it caused them to harden, allowing them to be swept up from beaches and to be gathered up by hand.

  • PDF

Study on Efficient Response Skill in the Yellow Sea Coast of Korea under Bad Weather (기상악화시 우리나라 서해안의 효율적인 방제방법 고찰)

  • Yun, Jong-Hwui;Gug, Seung-Gi;Moon, Jung-Hwan;Jang, Ha-Yong;Kuk, Eun-Mi;Ha, Min-Jae
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
    • /
    • 2010.04a
    • /
    • pp.402-403
    • /
    • 2010
  • Hebei Spirit Oil Spill in the West Coast in 2007 happened catastrophic environment and economy damage. Refer to the limitation of current oil spill response methods. and oil spill response in the Yellow sea coast of korea, effective measures are considered.

  • PDF

Prediction of Effective Horsepower for G/T 4 ton Class Coast Fishing Boat Using Statistical Analysis (통계해석에 의한 G/T 4톤급 연안어선의 유효마력 추정)

  • Park, Chung-Hwan;Shim, Sang-Mog;Jo, Hyo-Jae
    • Journal of Ocean Engineering and Technology
    • /
    • v.23 no.6
    • /
    • pp.71-76
    • /
    • 2009
  • This paper describes a statistical analysis method for predicting a coast fishing boat's effective horsepower. The EHP estimation method for small coast fishing boats was developed, based on a statistical regression analysis of model test results in a circulating water channel. The statistical regression formula of a fishing boat's effective horsepower is determined from the regression analysis of the resistance test results for 15 actual coast fishing boats. This method was applied to the effective horsepower prediction of a G/T 4 ton class coast fishing boat. From the estimation of the effective horsepower using this regression formula and the experimental model test of the G/T 4 ton class coast fishing boat, the estimation accuracy was verified under 10 percent of the design speed. However, the effective horsepower prediction method for coast fishing boats using the regression formula will be used at the initial design and hull-form development stage.

Fluctuations of Coastal Water Temperatures Along Korean and Japanese Coasts in the East Sea

  • KANG Yong-Q.;CHOI Seong-Won
    • Korean Journal of Fisheries and Aquatic Sciences
    • /
    • v.21 no.6
    • /
    • pp.351-360
    • /
    • 1988
  • Based on historic data of monthly means of sea surface temperatures (SST) for 24 years $(1921\~1944) $ at 23 Korean and Japanese coastal stations in the East Sea (the Japan Sea), we analyzed spatio-temporal characteristics of coastal SST and SST anomalies. The means of SST at Korean coast are higher than those at Japanese coast of the same latitudes, and the annual range of SST at Korean coast are larger than those at Japanese coast. Empirical orthogonal function analysis shows that almost all $(96\%)$ of the SST fluctuations are described by simultaneous seasonal variations. The flurtuations of SST anomalies are small in the Korea Strait and large at the boundaries between the warm and told currents in the basin. The fluctuations of SST anomalies along Korean coast are correlated each other The same is true for SST anomalies along Japanese coast. However, there is only weak correlation between the SST anomalies at Korean coast and those at Japanese coast. Empirical orthogonal function analysis shows that $27\%$ of the coastal SST anomalies in the East Sea are described by simultaneous fluctuations, and $12\%$ of them are described by alternating fluctuations between Korean and Japanese coasts.

  • PDF

Study on Coastal Terrace and Uplift Rate in the West and South Coasts of South Korea (서해안 및 남해안의 해안단구 연구와 융기율)

  • Park, Chung-Sun;Kihm, You Hong;Nahm, Wook-Hyun;Lee, Gwang-Ryul
    • Journal of The Geomorphological Association of Korea
    • /
    • v.25 no.4
    • /
    • pp.49-62
    • /
    • 2018
  • This study tries to reveal uplift rates inferred from relative and absolute ages on coastal terrace in the West and South Coasts of South Korea. Uplift rate from relative ages on Pleistocene coastal terrace in the West Coast rangesfrom approximately 0.059 to 0.282 m/ky, while a range of approximately 0.020~0.385 m/ky is calculated from the South Coast, suggesting that the South Coast shows higher rate than the West Coast. Based on absolute ages on coastal terrace during MIS 5 in the South Coast, on the other hand, the uplift rates 1 and 4 have ranges of approximately 0.042~0.062 m/ky and 0.051~0.087 m/ky, respectively, indicating that uplift rate in the South Coast is one-third to one-fourth to that in the East Coast. No research on absolute ages in West Coast terrace and lack of relative and absolute ages in the West and South Coasts are considered as the limit in this study.

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

  • Lee, Gwang-Ryul;Park, Chung-Sun
    • Journal of The Geomorphological Association of Korea
    • /
    • v.26 no.2
    • /
    • 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.