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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.1
- 수록면
- 267 - 281 (15page)
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초록· 키워드
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The occurrence of global warming and concomitant rises in sea level means it is important to assess the vertical lowering rates and evolution of shore platforms. Most previous studies, however, were based on empirical measurements and limited to the decadal scale, implying there is great necessity to learn about long-term rates of change on rocky coasts. In particular, because it is relatively easy to monitor soft rocks such as chalk, there is little information about hard rocky coasts that consist of volcanic, igneous, and metamorphic rocks. In this study, we used cosmogenic 36Cl exposure dating to overcome the spatial and temporal limitations of previous studies that have restricted progress in rocky coast research. Results show that the exposure ages of samples collected from the shore platforms along volcanic islands in the middle of the East Sea (Sea of Japan) range from the mid-Holocene (ca. 4 ka) to the last century (ca. 0.1 ka). The large range in ages along the outer platform edges may be related to stochastic, differential, and mechanical wave erosion. We also calculated the rates of vertical lowering from the 36Cl concentrations of the platform surfaces, yielding a maximum rate, excluding outliers, of 0.68 mm/yr. The rates of vertical lowering inferred from the cosmogenic 36Cl abundances are comparable with previous empirical values, and will improve our understanding of the long-term evolution of rocky coasts.
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참고문헌 (58)
참고문헌 신청
Bartrum, J. A. / 1916 / High water rock platforms: a phase of shoreline erosion / Transactions and Proceedings, New Zealand Institute 48:132~134
Bray, M.J. / 1997 / Prediction of soft-cliff retreat with accelerating sea-level rise / Journal of Coastal Research 13:453~467
Brooks, S. M. / 2012 / Deriving mechanisms and thresholds for cliff retreat in soft-rock cliffs under changing climates: rapidly retreating cliffs of the Suffolk coast, UK / Geomorphology 153:48~60
Chelli, A. / 2010 / The relative influence of lithology and weathering in shaping shore platforms along the coastline of the Gulf of La Spezia (NW Italy) as revealed by rock strength / Geomorphology 118:93~104
조병욱 / 2011 / 독도 서도 물골 지하수의 유출특성 / 지질공학 21(2):125~131
Bray, M.J. / 1997 / Prediction of soft-cliff retreat with accelerating sea-level rise / Journal of Coastal Research 13:453~467
Brooks, S. M. / 2012 / Deriving mechanisms and thresholds for cliff retreat in soft-rock cliffs under changing climates: rapidly retreating cliffs of the Suffolk coast, UK / Geomorphology 153:48~60
Chelli, A. / 2010 / The relative influence of lithology and weathering in shaping shore platforms along the coastline of the Gulf of La Spezia (NW Italy) as revealed by rock strength / Geomorphology 118:93~104
조병욱 / 2011 / 독도 서도 물골 지하수의 유출특성 / 지질공학 21(2):125~131
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