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http://dx.doi.org/10.5467/JKESS.2019.40.2.149

Characteristics of Surface Topography and Sediments before and after the Typhoon Kompasu in the Gochang Open-Coast Intertidal Flat, Korea  

Kang, Sol-Ip (Division of Science Education and Institute of Science Education, Chonbuk National University)
Ryang, Woo-Hun (Division of Science Education and Institute of Science Education, Chonbuk National University)
Chun, Seung-Soo (Faculty of Earth Systems and Environmental Sciences, Chonnam National University)
Publication Information
Journal of the Korean earth science society / v.40, no.2, 2019 , pp. 149-162 More about this Journal
Abstract
In the macro-tide open coast of the Korean western coast, typhoon effects were investigated in terms of variations on topography, surface sediment, and sedimentary environment, which appeared before and after the typhoon Kompasu of 2010. The Kompasu of small size and strong intensity landed on the southwestern coast of the Korean Peninsula and passed across the inland between September 1st and 2nd in 2010. Topography and surface sediments before and after the typhoon were measured and sampled along the survey line of 22 sites in the Gochang Donghori intertidal flat. The intertidal area was divided into high tidal zone, middle tidal zone, and lower tidal zone on the basis of mean high water level, mean sea level, and mean low water level. Topographic variation before and after the typhoon represented deposition of average 0.03 m in high tidal zone, erosion of average -0.15 m in middle tidal zone, and erosion of average -0.39 m in lower tidal zone, respectively. Surface sediments of the intertidal flat consisted mainly of fine to medium sands, and the ratio of fine sand was the largest both before and after the typhoon. Surface sediments after the typhoon became finer in mean grain size showing well sorting rather than those before the typhoon.
Keywords
typhoon Kompasu; macro-tide; open intertidal flat; topography; surface sediments; Gochang;
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