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    <title>DSpace Community:</title>
    <link>https://repository.kopri.re.kr/handle/201206/4802</link>
    <description />
    <pubDate>Sun, 29 Mar 2026 14:33:47 GMT</pubDate>
    <dc:date>2026-03-29T14:33:47Z</dc:date>
    <item>
      <title>Wind-Induced Topographic Rossby Waves in the Southwestern Slope of the Chukchi Abyssal Plain</title>
      <link>https://repository.kopri.re.kr/handle/201206/16469</link>
      <description>Title: Wind-Induced Topographic Rossby Waves in the Southwestern Slope of the Chukchi Abyssal Plain
Authors: Ku  Ahyoung; Donohue  Kathleen A.; Watts  D. Randolph; Kim  Kiduk; Song  Hajin; Jeon  Chanhyung; Park, Taewook; Cho, Kyoung-Ho; Peacock  Thomas; Park  Jae-Hun
Abstract: Near-bottom currents collected over 1 year (August 2021-22) using a current- and pressure-recording inverted echo sounder (CPIES) at a depth of 1060 m showed fluctuations within a frequency band between 2 and 6.5 days near the southwestern slope of the Chukchi Abyssal Plain. The amplitude of the fluctuations was approximately 8 cm s21 on average during the summer months and weakened to approximately 3 cm s21 between February and June 2022. Similar fluctuations were reproduced by the data-assimilated Hybrid Coordinate Ocean Model (HYCOM), confirming that they were bottom intensified. Calculations of the bottom-trapping scale using HYCOM revealed that these fluctuations could be attributed to topographic Rossby waves (TRWs) with a length scale of approximately 50 km. The spatial distributions of TRWs in HYCOM and ray-tracing results suggest that TRWs likely propagated from the west-southwest. It is suggested that these TRWs were triggered by nonlocal wind stress curl (WSC), 220 km to the west along the continental slope, as the coherence in the TRW frequency band between the TRWs and WSC was significant. The weaker TRW signal from February to June 2022 was related to weaker WSC and higher sea ice concentration in the study area. The stronger TRWs from July to October occurred when the WSC was stronger and the sea ice concentration was lower in the study area. Our findings imply that changes in the Arctic WSC field or a longer sea ice-free season could trigger more energetic and frequent TRWs, observable down to 1000-m depth around the southwestern slope of the Chukchi Abyssal Plain.</description>
      <pubDate>Mon, 01 Dec 2025 00:00:00 GMT</pubDate>
      <guid isPermaLink="false">https://repository.kopri.re.kr/handle/201206/16469</guid>
      <dc:date>2025-12-01T00:00:00Z</dc:date>
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    <item>
      <title>Historical Review &amp; Implications of Korea’s Arctic Sea Route Policy</title>
      <link>https://repository.kopri.re.kr/handle/201206/16602</link>
      <description>Title: Historical Review &amp; Implications of Korea’s Arctic Sea Route Policy
Authors: Seo, Hyun Kyo; 박종관
Abstract: 우리나라는 2013년 북극이사회 옵서버 지위에 오른 후 같은 해 12월 한국 최초의 북극정책인 ‘북극정책기본계획’을 수립하였고, 여기에 북극항로 세부과제가 포함되면서 북극항로 정책의 첫발을 내디뎠다. 이어, 2018년 ‘북극활동진흥기본계획’(’18-’22)에서도 북극항로 관련 과제는 2017년 문재인 정부의 ‘나인브릿지(9-Bridge) 전략’을 이행할 실행과제로서 그 의미를 더하였다. 이어 2021년 정부는 극지활동진흥법 제정 후, 동 법 6조에 근거하여 우리나라 최초의 북극 관련 법정 기본계획인 제1차 극지활동진흥기본계획(’23-’27)을 수립·발표했다. 이 기본계획부터는 해운·물류루트로서의 북극항로부터 조선, 항만, 기술개발 등 인프라 구축까지 모두 북극항로 아젠다에 포괄적으로 포함됐고, 현재 이재명 정부에서는 ‘북극항로’ 아젠다를 123대 국정과제 최우선 과제로 채택했다. &#xD;
  본 연구는 북극항로 관련 국내·외 선행연구를 분석하고, 북극정책기본계획부터 이재명 정부 시기까지 시대별로 북극항로 정책을 분석하였다. 그리고, 북극정책 모형(2019)을 기반으로 이재명 정부의 북극항로 국정과제 내 세부과제들을 재분류하여 국제협력, 기반구축, 과학연구 등의 부문에서 추가 세부과제들을 제안하였다. 그래서 향후 북극항로 기본계획 수립 시 세부과제 개발 방안 및 바람직한 북극항로 정책 방향을 제안하였다.</description>
      <pubDate>Mon, 01 Dec 2025 00:00:00 GMT</pubDate>
      <guid isPermaLink="false">https://repository.kopri.re.kr/handle/201206/16602</guid>
      <dc:date>2025-12-01T00:00:00Z</dc:date>
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    <item>
      <title>Determining horizontal and vertical distributions of polar cod (Boreogadus saida) in the Bering Sea and western Arctic Ocean using traditional sampling and environmental DNA metabarcoding</title>
      <link>https://repository.kopri.re.kr/handle/201206/16617</link>
      <description>Title: Determining horizontal and vertical distributions of polar cod (Boreogadus saida) in the Bering Sea and western Arctic Ocean using traditional sampling and environmental DNA metabarcoding
Authors: Gwak  Woo-Seok; Kim, Jee-Hoon; Cho, Kyoung-Ho; Yang, Eun Jin
Abstract: Boreogadus saida, commonly known as polar cod, is a key species in Arctic marine ecosystems that is also an indicator of environmental change. This study examined the spatial distribution of B. saida, which typically inhabits circumpolar waters ranging in temperature from-2 to 8 degrees C. Age classification based on size was performed on fish samples collected using ring nets, frame trawl nets, and hand nets. The results demonstrated that most individuals collected by ring and frame trawl nets in the southern Chukchi Sea (SCS) and East Siberian Sea (ESS) during late July and early August were age-0, while those collected in mid-August were age-1 and age-2. The individuals collected by hand net in the surface of the ESS and the northern Chukchi Sea (NCS) were all in age-1 and age-2 +. Smaller larvae collected in the ESS suggested local spawning grounds. Environmental factors, particularly temperature and prey availability, were found to influence habitat selection. To complement traditional sampling methods, environmental DNA (eDNA) metabarcoding using MiFish primers was conducted at various horizontal and vertical sites across the Bering Sea (BS), Chukchi Sea (CS), and ESS. B. saida eDNA was detected from surface waters to a maximum depth of 1804 mat temperatures ranging from-1.6 to 4.4 degrees C, which demonstrated the utility of eDNA for mapping both horizontal and vertical distributions. These findings highlight the value of integrating eDNA metabarcoding with conventional techniques to clarify B. saida's distribution and life history. They also emphasize the broader potential of eDNA monitoring as a sensitive, non-invasive framework for Arctic biodiversity assessment. Taken together, our results underscore not only the current distribution of B. saida but also the promise of eDNA as a foundation for long-term, ecosystem-wide monitoring in a rapidly changing Arctic.</description>
      <pubDate>Mon, 01 Dec 2025 00:00:00 GMT</pubDate>
      <guid isPermaLink="false">https://repository.kopri.re.kr/handle/201206/16617</guid>
      <dc:date>2025-12-01T00:00:00Z</dc:date>
    </item>
    <item>
      <title>Environmental and Ecosystem Changes in the Western Arctic Ocean: A Research Overview</title>
      <link>https://repository.kopri.re.kr/handle/201206/16483</link>
      <description>Title: Environmental and Ecosystem Changes in the Western Arctic Ocean: A Research Overview
Authors: Yang, Eun Jin
Abstract: 현재 북극은 전 지구에서 가장 빠른 속도로 온난화가 진행되면서 해빙이 급속히 소멸하고 있으며, 이는 기후 시스템과 해양환경, 생태계 전반에 중대한 영향을 미치고 있다. 이러한 변화는 단순한 환경 문제가 아니라 기후변화, 수산자원, 북극항로, 자원개발, 국제 지정학 등과 밀접하게 연관된 복합적 이슈로서, 전 지구 기후 안정성에 직접적인 영향을 미친다. 본 종설 논문은 쇄빙연구선 아라온을 활용한 서북극해 장기 현장관측, 해양계류장비, 퇴적물 트랩, eDNA 분석, 위성자료, 모델링 등 다중자료를 기반으로 북극 온난화가 초래한 서북극해의 해양환경？생태계 변화를 통합적으로 정리하였다. 연구를 통해 북극해의 대서양화가 서북극해 동시베리아까지 확장되었으며, 대서양수 확장이 해빙소멸을 가속화할수 있는 핵심 메커니즘임을 세계 최초로 확인하였다. 서북극해 식물플랑크톤은 규조류 중심에서 소형 편모조류 중심 구조로 전환되고 있었으며, 해빙하 대번성과 엽록소 최대층이 실제 일차 생산에 크게 기여함을 규명하였고, 해빙하 생태계가 북극해 탄소플럭스에 중요한 역할을 함을 제시하였다. 또한 조사해역에서 저산소？고산성화 수괴 등 새로운 생지화학적 이상 현상을 세계 최초로 규명하였으며, 대서양수 유입？담수화？해빙 감소 변화가 복합적으로 작용하여 서북극해 산성화가 빠르게 심화되고 있음을 확인하였다. 이러한 결과는 북극해가 물리？화학？생태계가 동시에 변화하는 전환기에 있음을 보여주고 있다. 향후 연구는 북극해 장기 모니터링 체계의 고도화, 국제공동연구 강화, 데이터 상호운용성 확보를 통해 예측 기반을 확립하고, 2029년 건조 예정인 차세대 쇄빙연구선을 활용한 집중 탐사를 통해 지속가능한 북극해 관리와 기후변화 대응을 선도하는 과학적 기반을 마련할 것이다.</description>
      <pubDate>Sat, 01 Nov 2025 00:00:00 GMT</pubDate>
      <guid isPermaLink="false">https://repository.kopri.re.kr/handle/201206/16483</guid>
      <dc:date>2025-11-01T00:00:00Z</dc:date>
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