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Analysis of Ice Velocity Variations of Nansen Ice Shelf, East Antarctica, from 2000 to 2017 Using Landsat Multispectral Image Matching

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dc.contributor.authorHan, Hyangsun-
dc.contributor.authorLee, Choon-Ki-
dc.date.accessioned2020-06-08T05:18:00Z-
dc.date.available2020-06-08T05:18:00Z-
dc.date.issued2018-
dc.identifier.urihttps://repository.kopri.re.kr/handle/201206/10628-
dc.description.abstractCollapse of an Antarctic ice shelf and its flow velocity changes has the potential to reduce the restraining stress to the seaward flow of the Antarctic Ice Sheet, which can cause sea level rising. In this study, variations in ice velocity from 2000 to 2017 for the Nansen Ice Shelf in East Antarctica that experienced a large-scale collapse in April 2016 were analyzed using Landsat-7 Enhanced Thematic Mapper Plus (ETM+) and Landsat-8 Operational Land Imager (OLI) images. To extract ice velocity, image matching based on orientation correlation was applied to the image pairs of blue, green, red, near-infrared, panchromatic, and the first principal component image of the Landsat multispectral data, from which the results were combined. The Landsat multispectral image matching produced reliable ice velocities for at least 10% wider area on the Nansen Ice Shelf than for the case of using single band (i.e., panchromatic) image matching. The ice velocities derived from the Landsat multispectral image matching have the error of 2.1 m a-1 compared to the in situ Global Positioning System (GPS) observation data. The region adjacent to the Drygalski Ice Tongue showed the fastest increase in ice velocity between 2000 and 2017. The ice velocity along the central flow line of the Nansen Ice Shelf was stable before 2010 (~228 m a-1). In 2011?2012, when a rift began to develop near the ice front, the ice flow was accelerated (~255 m a-1) but the velocity was only about 11% faster than 2010. Since 2014, the massive rift had been fully developed, and the ice velocity of the upper region of the rift slightly decreased (~225 m a-1) and stabilized. This means that the development of the rift and the resulting collapse of the ice front had little effect on the ice velocity of the Nansen Ice Shelf.en_US
dc.languageKoreanen_US
dc.language.isokoen_US
dc.subjectOther natural scienceen_US
dc.subject.classificationJang Bogo Stationen_US
dc.titleAnalysis of Ice Velocity Variations of Nansen Ice Shelf, East Antarctica, from 2000 to 2017 Using Landsat Multispectral Image Matchingen_US
dc.title.alternativeLandsat 다중분광 영상정합을 이용한 동남극 난센 빙붕의 2000-2017년 흐름속도 변화 분석en_US
dc.typeArticleen_US
dc.identifier.bibliographicCitationHan, Hyangsun, Lee, Choon-Ki. 2018. "Analysis of Ice Velocity Variations of Nansen Ice Shelf, East Antarctica, from 2000 to 2017 Using Landsat Multispectral Image Matching". <em>Korean Journal of Remote Sensing</em>, 34(6-2): 1165-1178.-
dc.citation.titleKorean Journal of Remote Sensingen_US
dc.citation.volume34en_US
dc.citation.number6-2en_US
dc.identifier.doi10.7780/kjrs.2018.34.6.2.2-
dc.citation.startPage1165en_US
dc.citation.endPage1178en_US
dc.description.articleClassificationKCI등재-
dc.description.jcrRateJCR 2016:0en_US
dc.subject.keywordLandsaten_US
dc.subject.keywordNansen Ice Shelfen_US
dc.subject.keywordice velocityen_US
dc.subject.keywordmultispectral image matchingen_US
dc.subject.keywordriften_US
dc.identifier.localId2018-0276-
Appears in Collections  
2018-2018, Research on analytical technique for satellite observation of Arctic sea ice (18-18) / Kim, Hyun-cheol (PE18120)
2018-2018, Development of Iceberg A-68 monitoring system to strengthen response to climate change issues (18-18) / Han, Hyangsun (PE18250)
2017-2018, Research on analytical technique for satellite observation of Arctic sea ice (17-18) / Kim, Hyun-cheol (PE17120; PE18120)
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