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Coupling Detection in Sea Ice of Bering Sea and Chukchi Sea: Information Entropy Approach

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dc.contributor.authorOh, Mingi-
dc.contributor.authorKim, Hyun-cheol-
dc.date.accessioned2020-10-19T02:43:14Z-
dc.date.available2020-10-19T02:43:14Z-
dc.date.issued2018-12-
dc.identifier.urihttps://repository.kopri.re.kr/handle/201206/10816-
dc.description.abstractWe examined if a state of sea-ice in Bering Sea acts as a prelude of variation in that of Chukchi Sea by using satellites-based Arctic sea-ice concentration time series. Datasets consist of monthly values of sea-ice concentration during 36 years (1982~2017). Time series analysis armed with Transfer entropy is performed to describe how sea-ice data in Chukchi Sea is affected by that in Bering Sea, and to explain the relationship. The transfer entropy is a measure which identifies a nonlinear coupling between two random variables or signals and estimates causality using modification of time delay. We verified this measure checked a nonlinear coupling for simulated signals. With sea-ice concentration datasets, we found that sea-ice in Bering Sea is influenced by that in Chukchi Sea 3, 5, 6 months ago through the transfer entropy measure suitable for nonlinear system. Particularly, when a sea-ice concentration of Bering Sea has a local minimum, sea ice concentration around Chukchi Sea tends to decline 5 months later with about 70% chance. This finding is considered to be a process that inflow of Pacific water through Bering strait reduces sea-ice in Chukchi Sea after lowering the concentration of sea-ice in Bering Sea. This approach based on information theory will continue to investigate a timing and time scale of interesting patterns, and thus, a coupling inherent in sea-ice concentration of two remote areas will be verified by studying ocean-atmosphere patterns or events in the period.en_US
dc.languageKoreanen_US
dc.language.isokoen_US
dc.subjectScience & Technology - Other Topicsen_US
dc.subject.classification해당사항없음en_US
dc.titleCoupling Detection in Sea Ice of Bering Sea and Chukchi Sea: Information Entropy Approachen_US
dc.title.alternative베링해 해빙 상태와 척치해 해빙 변화 간의 연관성 분석 : 정보 엔트로피 접근en_US
dc.typeArticleen_US
dc.identifier.bibliographicCitationOh, Mingi, Kim, Hyun-cheol. 2018. "Coupling Detection in Sea Ice of Bering Sea and Chukchi Sea: Information Entropy Approach". <em>Korean Journal of Remote Sensing</em>, 34(6-2): 1229-1238.-
dc.citation.titleKorean Journal of Remote Sensingen_US
dc.citation.volume34en_US
dc.citation.number6-2en_US
dc.identifier.doi10.7780/kjrs.2018.34.6.2.7-
dc.citation.startPage1229en_US
dc.citation.endPage1238en_US
dc.description.articleClassificationKCI등재-
dc.description.jcrRateJCR 2016:0en_US
dc.subject.keywordBering Seaen_US
dc.subject.keywordChukchi Seaen_US
dc.subject.keywordSea-iceen_US
dc.subject.keywordTime series analysisen_US
dc.subject.keywordTransfer entropyen_US
dc.identifier.localId2018-0424-
Appears in Collections  
2017-2018, Research on analytical technique for satellite observation of Arctic sea ice (17-18) / Kim, Hyun-cheol (PE17120; PE18120)
2018-2018, Research on analytical technique for satellite observation of Arctic sea ice (18-18) / Kim, Hyun-cheol (PE18120)
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