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Recent anomalous seismic activity in the Bransfield Strait, near King Sejong Station, Antarctic Peninsula (August 2020-February 2021)

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dc.contributor.authorLee, Won Sang-
dc.contributor.authorPark, Yongcheol-
dc.contributor.authorLee, Choon-Ki-
dc.date.accessioned2022-07-29T01:31:31Z-
dc.date.available2022-07-29T01:31:31Z-
dc.date.issued2021-10-
dc.identifier.urihttps://repository.kopri.re.kr/handle/201206/13707-
dc.description.abstractThere have been 170 earthquakes with seismic magnitudes ranging from 4.0-6.9 in the Bransfield Strait, Antarctic Peninsula, reported by the USGS since the first event (Mw 4.9) occurred on 29 August 2020, which is anomalously high seismicity in this region. The largest event in the earthquake swarm sequence occurred ~200 km northeast of the Orca submarine volcano on 23 January 2021, which has a magnitude Mw 6.9. We investigated the seismic data recorded at JUBA where is located in the King George Island and found that total 34,101 events were detected by applying the STA/LTA method and the daily occurrence exceeds 100 events until early November 2020 then gets smaller. Furthermore, the Focal Mechanisms Classification analysis for 27 earthquakes that moment tensor solutions are provided by the USGS indicates that most events are characterized by strike-slip faultings and a few normal faulting events. Some events with a compensated linear vector dipole component of more than 10% may implicate volumetric changes associated with submarine volcanic environments, even though it should be carefully examined by collecting more data through international collaborations.en_US
dc.languageKoreanen_US
dc.language.isokoen_US
dc.subjectGeologyen_US
dc.subject.classificationKing Sejong Stationen_US
dc.titleRecent anomalous seismic activity in the Bransfield Strait, near King Sejong Station, Antarctic Peninsula (August 2020-February 2021)en_US
dc.title.alternative최근 남극 세종과학기지 인근 브랜스필드 해협에서 발생한 이상 지진 활동(2020.08.-2021.02.)en_US
dc.typeArticleen_US
dc.identifier.bibliographicCitationLee, Won Sang, Park, Yongcheol, Lee, Choon-Ki. 2021. "Recent anomalous seismic activity in the Bransfield Strait, near King Sejong Station, Antarctic Peninsula (August 2020-February 2021)". <em>지질학회지</em>, 57(5): 717-726.-
dc.citation.title지질학회지en_US
dc.citation.volume57en_US
dc.citation.number5en_US
dc.identifier.doi10.14770/jgsk.2021.57.5.717-
dc.citation.startPage717en_US
dc.citation.endPage726en_US
dc.description.articleClassificationKCI등재-
dc.description.jcrRateJCR 2019:0en_US
dc.subject.keywordanomalously high seismicityen_US
dc.subject.keywordearthquake swarmen_US
dc.subject.keywordBransfield Straiten_US
dc.subject.keywordAntarctic Peninsulaen_US
dc.identifier.localId2021-0242-
dc.identifier.scopusid2-s2.0-85120318025-
Appears in Collections  
2021-2022, 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 - (21-22) / Lee, Won Sang (PM21020)
2021-2022, Preliminary Investigation for earthquake/volcanic disaster monitoring and emergency response system construction at the King Sejong Science Base in Antarctica (21-22) / Park, Yongcheol (PE21390)
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