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Hydroacoustic, Meteorologic and Seismic Observations of the 2016 Nansen Ice Shelf Calving Event and Iceberg Formation

Cited 6 time in wos
Cited 7 time in scopus

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dc.contributor.authorDziak, R. P.-
dc.contributor.authorLee, Won Sang-
dc.contributor.authorHaxel, J. H.-
dc.contributor.authorMatsumoto, H.-
dc.contributor.authorTepp, G.-
dc.contributor.authorLau, T-K-
dc.contributor.authorRoche, L.-
dc.contributor.authorYun, Sukyoung-
dc.contributor.authorLee, Choon-Ki-
dc.contributor.authorLee, Jiyeon-
dc.contributor.authorYoon, S.-T.-
dc.date.accessioned2020-10-21T02:04:14Z-
dc.date.available2020-10-21T02:04:14Z-
dc.date.issued2019-07-
dc.identifier.urihttps://repository.kopri.re.kr/handle/201206/10962-
dc.description.abstractOn April 7, 2016 the Nansen ice shelf (NIS) front calved into two icebergs, the first large-scale calving event in > 30 years. Three hydrophone moorings were deployed seaward of the NIS in December 2015 and over the following months recorded hundreds of short duration, broadband (10-400 Hz) cryogenic signals, likely caused by fracturing of the ice shelf. The majority of these icequakes occurred between January and early March 2016, several weeks prior to the calving observed by satellite on April 7. Barometric pressure and wind speed records show the day the icebergs drifted from the NIS coincided with the largest low-pressure storm system recorded in the previous 7 months. A nearby seismic station also shows an increase in low-frequency energy, harmonic tremor, and microseisms on April 7. Our interpretation is the northern segment of the NIS leading edge broke free during mid-January to February, producing high acoustic energy, but the icebergs remained stationary until a strong low-pressure system with high winds freed the icebergs. As the unpinning of Antarctic ice shelves is not a well-documented process, our observations show that storm systems may play an under-appreciated role in Antarctic ice shelf break-up.en_US
dc.languageEnglishen_US
dc.language.isoenen_US
dc.subjectGeologyen_US
dc.subject.classificationAraonen_US
dc.titleHydroacoustic, Meteorologic and Seismic Observations of the 2016 Nansen Ice Shelf Calving Event and Iceberg Formationen_US
dc.title.alternative2016년 난센 빙붕 붕괴 및 빙산 형성에 관한 수중음향, 기상학 및 지진학적 관측en_US
dc.typeArticleen_US
dc.identifier.bibliographicCitationDziak, R. P., et al. 2019. "Hydroacoustic, Meteorologic and Seismic Observations of the 2016 Nansen Ice Shelf Calving Event and Iceberg Formation". <em>Frontiers in Earth Science</em>, 7(183): 1-12.-
dc.citation.titleFrontiers in Earth Scienceen_US
dc.citation.volume7en_US
dc.citation.number183en_US
dc.identifier.doi10.3389/feart.2019.00183-
dc.citation.startPage1en_US
dc.citation.endPage12en_US
dc.description.articleClassificationSCIE-
dc.description.jcrRateJCR 2017:100en_US
dc.subject.keywordhydroacousticsen_US
dc.subject.keywordice shelfen_US
dc.subject.keywordatmospheric pressureen_US
dc.subject.keywordicequakeen_US
dc.subject.keywordwind speeds and directionsen_US
dc.identifier.localId2019-0172-
dc.identifier.scopusid2-s2.0-85069440076-
dc.identifier.wosid000475975500001-
Appears in Collections  
2019-2020, Land-Ice/Ocean Network Exploration with Semiautonomous Systems: Thwaites Glacier (LIONESS/TG) - Toward understanding the fate of the Thwaites Glacier by abrupt collapse and its impact on global sea level changes - (19-20) / Lee, Won Sang (PM19020)
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