[논문]입도 분포 특성을 이용한 동해 남한국대지 시추 퇴적물 중 화산재와 황사의 구분

이홍원; 장준호; 박장준

doi:10.7850/jkso.2021.26.2.135

입도 분포 특성을 이용한 동해 남한국대지 시추 퇴적물 중 화산재와 황사의 구분
Discrimination of Volcanic Ash and Asian Dust (Hwangsa) in Core Sediments from the South Korea Plateau (East Sea) Using Characteristics of Grain-size Distributions 원문보기

바다 : 한국해양학회지 = The sea : the journal of the Korean society of oceanography, v.26 no.2, 2021년, pp.135 - 144

이홍원 (충남대학교 자연과학대학 해양환경과학과) , 장준호 (충남대학교 자연과학대학 해양환경과학과) , 박장준 (충남대학교 자연과학대학 해양환경과학과)

초록
AI-Helper

동해 남한국대지 IODP Site U1430 시추 퇴적물 쇄설성 성분의 입도 자료에 대한 구성 성분 분해 결과 황사 입자와 화산재 입자를 대표하는 4개 구성 입도 집단이 구별되었다. 이 중 화산재 입자를 대표하는 2개 구성 입도 집단은 다양한 형태의 세립 및 조립 유리질 샤드들로 이루어져 있으며, 전체 입도 분포에서 0-82% 범위의 비율을 차지하고 있다. 분석된 입도 자료 중 화산재 유입 영향을 받은 자료를 제거하고 황사 입경 변화의 경향을 추출하기 위한 기준으로 화산재 구성 입도 집단 비율 33%가 적정한 것으로 판단된다.

Abstract ▼ AI-Helper

End-member (EM) analysis of grain-size distribution data for detrital fractions of IODP Site U1430 core sediments from the South Korea Plateau (East Sea) identified 4 EMs grain-size populations (EM) which represent either Asian dusts (Hwangsa) or volcanic ashes. The two EMs representing volcanic ashes consist of fine and coarse glass shards with various morphologies and constitute 0-82% of the total grain-size distributions. The 33% mixing percentage of volcanic ash EMs seems appropriate for a cut-off value for discrimination of grain-size data influenced by volcanic ash input from those dominated by Hwangsa.

주제어

표/그림 (8)

그림 Fig. 1. Location map for the Expedition 346 Site U1430 in the East Sea (red circle). Also shown are westerly jet-stream and winter monsoon which have transported eolian dust from the Asian interior to the East Sea (after Nagashima et al., 2007).
그림 Fig. 2. Photographs of selected intervals of U1430 core sediments containing visible (a and b) and invisible (c and d) volcanic ash particles. Core depths of the arrows in the right of each image are 46.22 m (a), 34.84 m (b), 27.39 m (c), and 32.98 m (d), respectively. Scale bars are 2 cm long. For grain-size distribution of the 32.98 m sample, see Fig. 3d.
그림 Fig. 4. Variation of median grain size (D50) in the Unit I of U1430 core sediments. Green marks indicate the 95 samples selected for end-member analysis.
그림 Fig. 3. (a) Grain-size distributions (GSDs) of all the 1421 samples from U1430 core sediments. (b) GSDs of the 54 selected samples which are suspected to contain ash particles. (c) End-member GSDs deduced from for the 95 selected samples. (d-f) End-member fitting results for selected samples.
표 Table 1. Grain-size statistics (mode, median, sorting, and skewness) of end-member grain-size distributions for U1430 core sediments
그림 Fig. 5. Polarizing microscope images (open nicol) of coarse ash end-member (EM4; a-c) and fine ash end-member (EM3; d). Observed ash types include vesicular glass fragments (v), bubble wall shards (b), subparallel pipe vesicles (p), and multiwinged bubble wall shards (w). Note very coarse pumice shard in (b) (arrow) and fine platy scattered shards in (d). Scale bars are 100 ㎛ long.
그림 Fig. 6. Plots of mixing percentages of eolian dust end members (EM1+EM2) vs. volcanic ash end members (EM3+EM4). Samples containing more than 33% of volcanic ash end members are defined to be influenced by volcanic ash input.
그림 Fig. 7. Temporal variations of the median grain size (D50) before (red) and after (green) removing data from the samples influenced by volcanic ash input (blue marks). LR04 is the marine oxygen isotope stack of Lisiecki and Raymo(2005) with shadings for glacial stages.

참고문헌 (23)

Anderson, C.H., R.W. Murray, A.G. Dunlea, L. Giosan, C.W. Kinsley, D. McGee and R. Tada, 2020. Aeolian delivery to Ulleung Basin, Korea (Japan Sea), during development of the East Asian Monsoon through the last 12 Ma. Geological Magazine, 157: 806-817.

상세보기
Ashley, G.M., 1978. Interpretation of polymodal sediments. Journal of Geology, 86: 411-421.

상세보기
Bahk, J.J., I.K. Um and J.H. Jang, 2021. Lateral sediment transport and late Quaternary changes of eolian sedimentation in the East Sea (Japan Sea). Journal of Asian Earth Sciences, 208: 104672.
Chun, J.H., D. Cheong, K. Ikehara and S.J. Han, 2007. Age of the SKP-I and SKP-II tephras from the southern East Sea/Japan Sea: Implications for interstadial events recorded in sediment from marine isotope stages 3 and 4. Palaeogeography Palaeoclimatology Palaeoecology, 247(1-2): 100-114.
Clark, M.W., 1976. Some methods for statistical analysis of multimodal distributions and their application to grain-size data. Journal of the International Association for Mathematical Geology, 8: 267-282.

상세보기
Dietze, E., K. Hartman, B. Diekmann, J. Ijmker, F. Lehmkuhl, S. Opitz, , G. Stauch, B. Wunneman and A. Borchers, 2012. An end-member algorithm for deciphering modern detrital processes from lake sediments of Lake Donggi Cona, NE Tibetan Plateau, China. Sedimentary Geology., 243-244: 169-180.
Folk, R.L., 1954. The distinction between grain size and mineral composition in sedimentary-rock nomenclature. Journal of Geology, 62: 344-359.

상세보기
Furuta, T., K. Fujioka and F. Arai, 1986. Widespread submarine tephras around Japan-petrographic and chemical properties. Marine Geology., 72: 125-142.

상세보기
Hamann, Y., W. Ehrmann, G. Schmiedl, S. Kruger, J.-B. Stuut and T. Kuhnt, 2008. Sedimentation processes in the Eastern Mediterranean Sea during the Late Glacial and Holocene revealed by end-member modelling of the terrigenous fraction in marine sediments. Marine Geology., 248: 97-114.

상세보기
Ikehara, K., 2015. Marine tephra in the Japan Sea sediments as a tool for paleoceanography and paleoclimatology. Progress in Earth and Planetary Science, 2: 36.

상세보기
Jang, J.H., J.J. Bahk, E.J. Kim and I.K. Um, 2020. Characteristics and Paleoceanographic Implications of Grain-size Distributions of Biogenic Components in Sediments from the South Korea Plateau (East Sea). Ocean and Polar Research, 42: 249-261.
Lee, S., I. Seo and K. Hyeong, 2019. Reconstruction of changes in eolian particle deposition across the mid-pleistocene transition in the central part of the North Pacific. Ocean and Polar Research, 41: 275-288.
Lisiecki, L.E. and M.E.A. Raymo, 2005. Pliocene-Pleistocene stack of 57 globally distributed benthic δ18O records. Paleoceanography, 20: PA1003.
Nagashima, K., R. Tada, A. Tani, Y. Sun, Y. Isozaki, S. Toyoda and H. Hasegawa, 2011. Millennial-scale oscillations of the westerly jet path during the last glacial period. Journal of Asian Earth Sciences, 40: 1214-1220.

상세보기
Nagashima, K., R. Tada, H. Matsui, T. Irino, A. Tani and A. Toyoda, 2007. Orbital- and millennial-scale variations in Asian dust transport path to the Japan Sea. Palaeogeography Palaeoclimatology Palaeoecology, 247: 144-161.

상세보기
Paterson, G.A. and D. Heslop, 2015. New methods for unmixing sediment grain size data. Geochemistry Geophysics Geosystems, 16: 4494-4506.

상세보기
Rea, D.K., 1994. The paleoclimatic record provided by eolian deposition in the deep sea: The geologic history of wind. Reviews of Geophysics 32: 159-195, https://doi.org/10.1029/93RG03257.

상세보기
Sheridan, M.F., K.H. Wohletz and J. Dehn, 1987. Discrimination of grain-size subpopulations in pyroclastic deposits. Geology, 15: 367-370.

상세보기
Tada, R., T. Irino, K. Ikehara and the Expedition 346 Scientists, 2018. High-resolution and high-precision correlation of dark and light layers in the Quaternary hemipelagic sediments of the Japan Sea recovered during IODP Expedition 346. Progress in Earth and Planetary Sciences, 5: 19.
Tada, R., R.W. Murray, C.A. Alvarez Zarikian, and the Expedition 346 Scientists, 2015. Proceedings of the International Ocean Discovery Program 346, College Station, TX.
van Hateren, J.A., M.A. Prins, and R.T. van Balen, 2018. On the genetically meaningful decomposition of grain-size distributions: A comparison of different end-member modelling algorithms. Sedimentary Geology, 375: 49-71.

상세보기
Weltje, G.J., 1997, End-member modelling of compositional data: Numerical-statistical algorithms for solving the explicit mixing problem. Journal of the International Association for Mathematical Geology, 29: 503-549.
Weltje, G.J. and M.A. Prins, 2007. Genetically meaningful decomposition of grain-size distributions. Sedimentary Geology, 202: 409-424.

상세보기

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 논문명, 저널/프로시딩명, 저자 , 발행년, 권, 호, 시작페이지, 끝페이지, 발행기관 관리번호, 논문명, 대등논문명, 저자 , 저널/프로시딩명, 발행기관, 발행년, 발행언어, 권, 호, 시작페이지, 끝페이지, ISBN, ISSN, 주제분야, 키워드, 초록(한글), 초록(영문), 저자(소속기관)
저장형식	Text(ASCII format) Excel format RefWorks Direct Export RIS format (for Reference Manager, ProCite, EndNote), Scholar's Aids, Mendeley
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증