• 제목/요약/키워드: Pacific Ocean

검색결과 790건 처리시간 0.033초

Wave Height from Satellite Altimetry and Its Comparison with a Model Product

  • Kim, Seung-Bum;Kang, Sok-Kuh
    • 대한원격탐사학회지
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    • 제19권1호
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    • pp.31-36
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    • 2003
  • We extracted significant wave height (SWH) using several altimeter missions from 1987-1995 over the Northwest Pacific ocean and compared with ECMWF (European Center for Medium- Range Forecast) reanalysis (ERA) products. For large wave heights the ERA wave heights are smaller than the altimetric ones, while for small wave heights the ERA wave heights are larger Comparison in SWH between altimetric derivations and ERA model products shows the discrepancy of 0.46-0.21$\times$SWH (m). Methods for propagating this differences into ERA wind error are presented.

Additional Description of the Vent Scale Worm Thermopolynoe branchiata (Polychaeta: Polynoidae) from the North Fiji Basin

  • Won-Kyung Lee;Geon Hyeok Lee;Se-Jong Ju;Se-Joo Kim
    • Animal Systematics, Evolution and Diversity
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    • 제39권1호
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    • pp.47-52
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    • 2023
  • Thermopolynoe Miura, 1994 is a monotypic genus in Lepidonotopodinae that comprises species endemic to chemosynthesis-based ecosystems. Here, we examined T. branchiata collected from the hydrothermal vents in the North Fiji Basin. For the first time in Thermopolynoe, we report sexual dimorphism detecting nephridial papillae on segments 11-13 in males, additionally describe the morphology on elytra with round to conical microtubercles on the surface, and distinguish presence of small neuropodial lobes on segments 3-26. We also revised couple of errors and ambiguities in the original description: incongruence between the description and figure and existence of individual variation in ratio of tentacular cirri and palps. In addition, three COI sequences of T. branchiata specimens from the North Fiji Basin were newly obtained and sequences divergence with other Lepidonotopodinae species were determined. These results would contribute to the taxonomy of polynoids in a chemosynthesis-based ecosystem.

열대 및 아열대 SST에 관련된 동아시아 강우량의 경년 변동성 (Interannual variabilities of the East Asia precipitation associated with tropical and subtropical sea surface temperature)

  • 하경자
    • 한국환경과학회지
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    • 제4권5호
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    • pp.28-28
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    • 1995
  • The aim of the present study is to investigate the interannual variabilities of the East Asia monsoon rainfall associated with the global sea surface temperature anomaly(SSTA). For this study, the summer rainfall(from June to August) over the twenty-eight period of 1961-1988 were analyzed with being divided by nine-subregions over East Asia including Korea, China and Japan. From the analysis of the principal modes explaining the interannual variation, the interannual variabilities of summer rainfalls in South Japan and Korea are larger than those of the other subregions of the East Asia. There is a strong negative correlation between the summer rainfalls of south China and Korea. In this study, the relationship between the summer monsoon of each subregion and SSTs of the tropical NINO regions, of western Pacific warm pool, and of the subtropical ocean were investigated. The longitudinal sections of the lagged cross correlations of the summer rainfal1 anomaly in (a) Korea and (b) south China, and the monthly SSTA in the equatorial(averaged from 65 to 6N) Pacific were analyzed. The negative maximum correlation pattems of Korea''s stammer rainfal1 and SSTs over the eastern Pacific is transfered to positive maximum conrlation over central Pacific region with a biennial periodicity. In South China, the significant positive correlations are found at -12 month lag over the eastern Pacific and maximum negative correlation at 16 month lag over the central Pacific with the quasi-biennial oscillation. But the correlation coefficient reverses completely to that in Korea. In order to investigate the most prevailing interannual variability of rainfall related to the favored SSTA region, the lagged cross correlations between East Asia rainfall and SSTs over the moO regions(NINO 1+2(0-105, 90W-80W), NINO 3(5N-5S, 150W-90W), NINO 4(5N-5S, 160E-l50W) and the western Pacific worm pool (5N-5S, 120E-l60E) were analyzed. Among the lagged cross-correlation cycles in NINO regions, the maximum correlations for the negative lagged months prevail in NINO 1+2 and NINO 3, and the cross correlations for the positive lagged months NINO 4. It is noteworthy that correlation between the western Pacific warm pool SSTA and the monsoon rainfall in Korea and South China have the maximum value at negative 4 month lag. The evolution of the correlation between the East Asia monsoon rainfall and SSTA is linked to the equatorial convective cluster and related to northward propagating situation, and raising the possibility that the East Asia monsoon precipitation may be more fundamentally related to the interaction of intraseasonal oscillations and the sub-regional characteristics including the surface boundary conditions and the behavior of climatological air mass.

열대 및 아열대 SST에 관련된 동아시아 강우량의 경년 변동성 (Interannual variabilities of the East Asia precipitation associated with tropical and subtropical sea surface temperature)

  • 하경자
    • 한국환경과학회지
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    • 제4권5호
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    • pp.413-426
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    • 1995
  • The aim of the present study is to investigate the interannual variabilities of the East Asia monsoon rainfall associated with the global sea surface temperature anomaly(SSTA). For this study, the summer rainfall(from June to August) over the twenty-eight period of 1961-1988 were analyzed with being divided by nine-subregions over East Asia including Korea, China and Japan. From the analysis of the principal modes explaining the interannual variation, the interannual variabilities of summer rainfalls in South Japan and Korea are larger than those of the other subregions of the East Asia. There is a strong negative correlation between the summer rainfalls of south China and Korea. In this study, the relationship between the summer monsoon of each subregion and SSTs of the tropical NINO regions, of western Pacific warm pool, and of the subtropical ocean were investigated. The longitudinal sections of the lagged cross correlations of the summer rainfal1 anomaly in (a) Korea and (b) south China, and the monthly SSTA in the equatorial(averaged from 65 to 6N) Pacific were analyzed. The negative maximum correlation pattems of Korea's stammer rainfal1 and SSTs over the eastern Pacific is transfered to positive maximum conrlation over central Pacific region with a biennial periodicity. In South China, the significant positive correlations are found at -12 month lag over the eastern Pacific and maximum negative correlation at 16 month lag over the central Pacific with the quasi-biennial oscillation. But the correlation coefficient reverses completely to that in Korea. In order to investigate the most prevailing interannual variability of rainfall related to the favored SSTA region, the lagged cross correlations between East Asia rainfall and SSTs over the moO regions(NINO 1+2(0-105, 90W-80W), NINO 3(5N-5S, 150W-90W), NINO 4(5N-5S, 160E-l50W) and the western Pacific worm pool (5N-5S, 120E-l60E) were analyzed. Among the lagged cross-correlation cycles in NINO regions, the maximum correlations for the negative lagged months prevail in NINO 1+2 and NINO 3, and the cross correlations for the positive lagged months NINO 4. It is noteworthy that correlation between the western Pacific warm pool SSTA and the monsoon rainfall in Korea and South China have the maximum value at negative 4 month lag. The evolution of the correlation between the East Asia monsoon rainfall and SSTA is linked to the equatorial convective cluster and related to northward propagating situation, and raising the possibility that the East Asia monsoon precipitation may be more fundamentally related to the interaction of intraseasonal oscillations and the sub-regional characteristics including the surface boundary conditions and the behavior of climatological air mass.

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남태평양 해상에서의 대기 중 DMS 농도 변화 연구 (Measurements of Atmospheric DMS Concentration in the South Pacific Ocean)

  • 박주영;김경렬;김동엽;김동선;이강웅
    • 한국대기환경학회:학술대회논문집
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    • 한국대기환경학회 2000년도 춘계학술대회 논문집
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    • pp.379-380
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    • 2000
  • 오늘날 사람들은 지구상에서 발생하고 있는 여러 물리화학적인 자연 현상들이 지엽적 또는 단편적인 원인에 의해 지배되는 것이 아니라 전지구적인 규모에서 복합적인 원인들에 의해 발생하고 있으며 개개의 현상들 역시 서로 독립적이지 못 함을 알고 있다. 따라서 학자들은 이러한 여러 현상들에 대한 조사·연구뿐만 아니라 이러한 연구들을 통하여 각각의 현상들이 갖는 상호 연관성에 대한 이해를 넓히기 위해 노력하고 있다. (중략)

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황사기간중 제주지역의 에어로졸과 수용성이온의 크기분포 (Study on Size Distribution of Total Aerosol and Water-soluble tons During an Asian Dust Storm Event at Jeju Island)

  • Park Seong-Hun;Song Chang-Byeong;Kim Min-Cheol;Gwon Sun-Park;Lee Gyu-Won
    • 한국대기환경학회:학술대회논문집
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    • 한국대기환경학회 2002년도 춘계학술대회 논문집
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    • pp.159-160
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    • 2002
  • Soil dust particles transported from loess regions of the Asian continent, called Asian dust, highly influences the air quality of north-eastern Asia and the northern Pacific Ocean. The effects of these dust storms, on the chemical composition of atmospheric aerosol particles with different size, was investigated. Measurements of size distributions of total aerosol and major ion species were carried out on Jeju Island, Korea. (omitted)

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Reproduction and population dynamics of Acetes chinensis (Decapoda: Sergestidae) on the south-western coastal waters of Korea, Yellow Sea

  • Oh, Chul-Woong;Jeong, In-Ju;Ma, Chae-Woo
    • 한국어업기술학회:학술대회논문집
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    • 한국어업기술학회 2002년도 추계 수산관련학회 공동학술대회발표요지집
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    • pp.220-221
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    • 2002
  • The planktonic shrimp, Acetes chinensis Hansen, 1919 inhabits the coastal areas of the Info-West Pacific, Korea, China, Taiwan, and Japan and is most abundant along the coastal areas of Yellow Sea. Several studies have locally examined aspects of reproductive biology of the species such as reproductive cycle, spawning, maturity, breeding pattern and fecundity. (omitted)

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