SARAL/Altika 해표면 고도 위성에 의한 동해 북부 연안 해류
The drifters of the Global Drifter Program were deployed in the northern East Sea for two years from March 2015 to compare and validate currents estimated from sea-level measurements with the SARAL/AltiKa altimetry satellite mission, specially designed to accurately measure sea level in the near-coa...
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Published in | Pada (Hanʼguk Haeyang Hakhoe) Vol. 24; no. 3; pp. 429 - 435 |
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Main Authors | , , , |
Format | Journal Article |
Language | Korean |
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한국해양학회
01.08.2019
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Abstract | The drifters of the Global Drifter Program were deployed in the northern East Sea for two years from March 2015 to compare and validate currents estimated from sea-level measurements with the SARAL/AltiKa altimetry satellite mission, specially designed to accurately measure sea level in the near-coastal area. The collocated (less than 20 km apart) directly measured current from GPS locations every 30 minutes and the currents normal to the satellite tracks show a similar correlation in the area shallower than 200 m depth as the open ocean and it makes it possible to investigate the time variations of the current along the coast in the northern East sea, where direct observations of current are scarce. The Liman Current along the Siberian coast is found to be southward all year round, but the North Korean Cold Current flows southward only in the summer. The North Korean Cold Current south of the Musudan cape mostly flows to the south, but the current direction depends on the presence of an eddy around the coast of Musudan cape. 연안에서 해표면고도를 정확하게 측정하도록 특별히 설계된 SARAL/Altika위성에 의해 관측된 해류를 비교 검정하기 위해 2015년 3월부터 2년간 위성추적 뜰개가 동해 북부 해상에 투하되었다. 해표면 고도 측정 위치에서 반경 20 km 이내에 위치한 뜰개(30분 간격으로 GPS로 위치 관측)와 비교한 결과, 수심 200 m 보다 얕은 해역에서 외해와 유사하게 높은 상관관계를 가진 것으로 나타나, 해류의 직접 관측이 어려운 동해 북부의 연안류의 시간 변동을 관측할 수 있게 되었다. 리만 해류는 일년 년중 시베리아 연안을 따라 남하하는 해류로 관측되었으며, 북한 한류는 여름철에만 남향하는 해류를 보였다. 북한 한류는 무수단곶 이남에서는 주로 남향류를, 무수단곶 이북에서는 무수단곶 근해에서의 에디 존재 유무에 의해 방향이 결정되는 것으로 연구되었다. |
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AbstractList | 연안에서 해표면고도를 정확하게 측정하도록 특별히 설계된 SARAL/Altika위성에 의해 관측된 해류를 비교 검정하기 위해 2015 년 3월부터 2년간 위성추적 뜰개가 동해 북부 해상에 투하되었다. 해표면 고도 측정 위치에서 반경 20 km 이내에 위치한 뜰개(30분간격으로 GPS로 위치 관측)와 비교한 결과, 수심 200 m 보다 얕은 해역에서 외해와 유사하게 높은 상관관계를 가진 것으로 나타나, 해류의 직접 관측이 어려운 동해 북부의 연안류의 시간 변동을 관측할 수 있게 되었다. 리만 해류는 일년 년중 시베리아 연안을 따라 남하하는 해류로 관측되었으며, 북한 한류는 여름철에만 남향하는 해류를 보였다. 북한 한류는 무수단곶 이남에서는 주로 남향류를, 무수단곶 이북에서는 무수단곶 근해에서의 에디 존재 유무에 의해 방향이 결정되는 것으로 연구되었다. The drifters of the Global Drifter Program were deployed in the northern East Sea for two years from March 2015 to compare and validate currents estimated from sea-level measurements with the SARAL/AltiKa altimetry satellite mission, specially designed to accurately measure sea level in the near-coastal area. The collocated (less than 20 km apart) directly measured current from GPS locations every 30 minutes and the currents normal to the satellite tracks show a similar correlation in the area shallower than 200 m depth as the open ocean and it makes it possible to investigate the time variations of the current along the coast in the northern East sea, where direct observations of current are scarce. The Liman Current along the Siberian coast is found to be southward all year round, but the North Korean Cold Current flows southward only in the summer. The North Korean Cold Current south of the Musudan cape mostly flows to the south, but the current direction depends on the presence of an eddy around the coast of Musudan cape. KCI Citation Count: 0 The drifters of the Global Drifter Program were deployed in the northern East Sea for two years from March 2015 to compare and validate currents estimated from sea-level measurements with the SARAL/AltiKa altimetry satellite mission, specially designed to accurately measure sea level in the near-coastal area. The collocated (less than 20 km apart) directly measured current from GPS locations every 30 minutes and the currents normal to the satellite tracks show a similar correlation in the area shallower than 200 m depth as the open ocean and it makes it possible to investigate the time variations of the current along the coast in the northern East sea, where direct observations of current are scarce. The Liman Current along the Siberian coast is found to be southward all year round, but the North Korean Cold Current flows southward only in the summer. The North Korean Cold Current south of the Musudan cape mostly flows to the south, but the current direction depends on the presence of an eddy around the coast of Musudan cape. 연안에서 해표면고도를 정확하게 측정하도록 특별히 설계된 SARAL/Altika위성에 의해 관측된 해류를 비교 검정하기 위해 2015년 3월부터 2년간 위성추적 뜰개가 동해 북부 해상에 투하되었다. 해표면 고도 측정 위치에서 반경 20 km 이내에 위치한 뜰개(30분 간격으로 GPS로 위치 관측)와 비교한 결과, 수심 200 m 보다 얕은 해역에서 외해와 유사하게 높은 상관관계를 가진 것으로 나타나, 해류의 직접 관측이 어려운 동해 북부의 연안류의 시간 변동을 관측할 수 있게 되었다. 리만 해류는 일년 년중 시베리아 연안을 따라 남하하는 해류로 관측되었으며, 북한 한류는 여름철에만 남향하는 해류를 보였다. 북한 한류는 무수단곶 이남에서는 주로 남향류를, 무수단곶 이북에서는 무수단곶 근해에서의 에디 존재 유무에 의해 방향이 결정되는 것으로 연구되었다. |
Author | 최장근 LEE, DONG-KYU 이동규 CHOI, JANG-GEUN |
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Snippet | The drifters of the Global Drifter Program were deployed in the northern East Sea for two years from March 2015 to compare and validate currents estimated from... 연안에서 해표면고도를 정확하게 측정하도록 특별히 설계된 SARAL/Altika위성에 의해 관측된 해류를 비교 검정하기 위해 2015 년 3월부터 2년간 위성추적 뜰개가 동해 북부 해상에 투하되었다. 해표면 고도 측정 위치에서 반경 20 km 이내에 위치한 뜰개(30분간격으로 GPS로... |
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Title | SARAL/Altika 해표면 고도 위성에 의한 동해 북부 연안 해류 |
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