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http://dx.doi.org/10.9719/EEG.2022.55.5.541

A Theoretical Study on the Landscape Development by Different Erosion Resistance Using a 2d Numerical Landscape Evolution Model  

Kim, Dong-Eun (Active Tectonic Research Center, Korea Institute of Geoscience and Mineral Resources)
Publication Information
Economic and Environmental Geology / v.55, no.5, 2022 , pp. 541-550 More about this Journal
Abstract
A pre-existing landform is created by weathering and erosion along the bedrock fault and the weak zone. A neotectonic landform is formed by neotectonic movements such as earthquakes, volcanoes, and Quaternary faults. It is difficult to clearly distinguish the landform in the actual field because the influence of the tectonic activity in the Korean Peninsula is relatively small, and the magnitude of surface processes (e.g., erosion and weathering) is intense. Thus, to better understand the impact of tectonic activity and distinguish between pre-existing landforms and neotectonic landforms, it is necessary to understand the development process of pre-existing landforms depending on the bedrock characteristics. This study used a two-dimensional numerical landscape evolution model (LEM) to study the spatio-temporal development of landscape according to the different erodibility under the same factors of climate and the uplift rate. We used hill-slope indices (i.e., relief, mean elevation, and slope) and channels (i.e., longitudinal profile, normalized channel steepness index, and stream order) to distinguish the difference according to different bedrocks. As a result of the analysis, the terrain with high erosion potential shows low mean elevation, gentle slope, low stream order, and channel steepness index. However, the value of the landscape with low erosion potential differs from that with high erodibility. In addition, a knickpoint came out at the boundary of the bedrock. When researching the actual topography, the location around the border of difference in bedrock has only been considered a pre-existing factor. This study suggested that differences in bedrock and various topographic indices should be comprehensively considered to classify pre-existing and active tectonic topography.
Keywords
pre-existing landform; neotectonic landform; erodibility difference; topography analysis; bedrock channel analysis; numerical landscape evolution model;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 Whipple, K.X. and Tucker, G.E. (1999) Dynamics of the streampower river incision model: Implications for height limits of mountain ranges, landscape response timescales, and research needs. Journal of Geophysical Research: Solid Earth, v.104(B8), p.17661-17674. doi: 10.1029/1999JB900120   DOI
2 Lee, C.H., Seong, Y.B., Oh, J.-S. and Kim, D.E. (2019) Tectonic Geomorphology on Yugye-Bogyeongsa Area of Yangsan Fault Zone. Journal of the Korean Geomorphological Association, v.26, p.93-106. (in Korean with English abstract) doi: 10.16968/JKGA.26.1.93   DOI
3 Oh, J.-S. and Kim, D.E. (2019) Lineament Extraction and Its Comparison Using DEMs based on LiDAR, Digital Topographic Map, and Aerial Photo in the Central Segment of Yangsan Fault. The Korean Geographical Society, v.54, p.507-525.
4 Park, H.-J., Han, R. and Gu, D. (2020) Structures and deformation characteristics of the active fault, Hwalseongri area, Gyeongju, Korea. Journal of the Geological Society of Korea, v.56, p.703-726. (in Korean with English abstract) doi: 10.14770/jgsk.2020.56.6.703   DOI
5 Sklar, L.S. and Dietrich, W.E. (2001) Sediment and rock strength controls on river incision into bedrock. Geology, v.29(12), p.1087-1090. doi: 10.1130/0091-7613(2001)029%3C1087:SARSCO%3E2.0.CO;2   DOI
6 Stock, J.D. and Montgomery, D.R. (1999) Geologic constraints on bedrock river incision using the stream power law. Journal of Geophysical Research: Solid Earth, v.104(B3), p.4983-4993. doi: 10.1029/98JB02139   DOI
7 Yanites, B.J., Becker, J.K., Madritsch, H., Schnellmann, M. and Ehlers, T.A. (2017) Lithologic effects on landscape response to base level changes: a modeling study in the context of the Eastern Jura Mountains, Switzerland. Journal of Geophysical Research: Earth Surface, v.122, p.2196-2222. doi: 10.1002/2016JF004101   DOI
8 Zondervan, J.R., Whittaker, A.C., Bell, R.E., Watkins, S.E., Brooke, S.A. and Hann, M.G. (2020) New constraints on bedrock erodibility and landscape response times upstream of an active fault. Geomorphology, v.351, 106937. doi: 10.1016/j.geomorph.2019.106937   DOI
9 Cheon, Y., Choi, J.-H., Kim, N., Lee, H., Choi, I., Rockwell, T.K., Lee, S.R., Ryoo, C.-R, Choi, H. and Lee, T.-H. (2020). Late Quaternary transpressional earthquakes on a long-lived intraplate fault: A case study of the Southern Yangsan Fault, SE Korea. Quaternary International, v.553, p.132-143. doi: 10.1016/j.quaint.2020.07.025   DOI
10 Clayton, K. and Shamoon, N. (1998) A new approach to the relief of Great Britain: II. A classification of rocks based on relative resistance to denudation. Geomorphology, v.25(3-4), p.155-171. doi: 10.1016/S0169-555X(98)00038-5   DOI
11 Kirby, E. and Whipple, K.X. (2012) Expression of active tectonics in erosional landscapes. Journal of Structural Geology, v.44, p.54-75. doi: 10.1016/j.jsg.2012.07.009   DOI
12 Han, J.-G. and Choi, S.-J. (2011) Case study of Fault Based on Drainage System Analysis in the Namdae Stream, Uljin Area. Econ. Environ. Geol., v.44(5), p.399-412. (in Korean with English abstract) doi: 10.9719/EEG.2011.44.5.399   DOI
13 Kim, D.E. and Seong, Y. (2021) Cumulative Slip Rate of the Southern Yangsan Fault from Geomorphic Indicator and Numerical Dating. The Korean Geographical Society, v.56(2), p.201-213. doi: 10.22776/kgs.2021.56.2.201   DOI
14 Kim, J.W., Chang, H.W., Choi, J.H., Choi, K.H. and Byun, J. (2007b) Landform characteristics of coastal terraces and optically stimulated luminescence dating on the terrace deposits in Yangnam and Yangbuk area of the Gyeongju City, South Korea. J. Korean Geomorphol. Assoc., v.14, p.1-14. (in Korean with English abstract)
15 Lee, G.-R. (2014) Characteristics and classification of landform relieves on mountains and valleys with bedrock types. Journal of the Korean Geomorphological Association, v.21, p.1-17. (in Korean with English abstract) doi: 10.18339/jkga.2014.21.4.1   DOI
16 Meybeck, M. (1987) Global chemical weathering of surficial rocks estimated from river dissolved loads. American Journal of Science, v.287(5), p.401-428. doi: 10.2475/ajs.287.5.401   DOI
17 Kim, Y.-S., Son, M., Choi, J-H., Choi, J-H., Seong, Y.B. and Lee, J. (2020) Processes and challenges for the production of Korean active faults map. Journal of the Geological Society of Korea. v.56(2), p.113-134. doi: 10.14770/jgsk.2020.56.2.113   DOI
18 Kim, J.W., Chang, H.W., Choi, J.H., Choi, K.H. and Byun, J. (2007a) Optically stimulated luminescence dating on the marine terrace deposits of Hujeong-Jukbyeon Region in Uljin Korea. J. Korean Geomorphol. Assoc., v.14, p.15-27. (in Korean with English abstract)
19 Kyung, J.B. (2003) Paleoseismology of the Yangsan fault, southeastern part of the Korean peninsula. Annals of Geophysics, v.46(5). doi: 10.4401/ag-3465   DOI
20 Scharf, T.E., Codilean, A.T., De Wit, M., Jansen, J.D. and Kubik, P.W. (2013) Strong rocks sustain ancient postorogenic topography in southern Africa. Geology, v.41, p.331-334. doi: 10.1130/G33806.1   DOI
21 Hugget, R.J. (2011) Fundamentals of Geomorphology 3rd Edition. e United Kingdom: Routledge Taylor and Francis Group.
22 Flint, J.J. (1974) Stream gradient as a function of order, magnitude, and discharge. Water Resources Research, v.10, p.969-973. doi: 10.1029/WR010i005p00969   DOI
23 Forte, A.M., Yanites, B.J. and Whipple, K.X. (2016) Complexities of landscape evolution during incision through layered stratigraphy with contrasts in rock strength. Earth Surface Processes and Landforms, v.41(12), p.1736-1757. doi: 10.1002/esp.3947   DOI
24 Howard, A.D. and Kirby, G. (1983) Channel change in badland. Geological Society America Bulletin, v.94, p.739-752. doi: 10.1130/0016-7606(1983)94%3C739:CCIB%3E2.0.CO;2   DOI
25 Choi, S.-J., Jeon, J.-S., Song, K.-Y., Kim, H.-C., Kim, Y.-H., Choi, P.-Y., Chwae, U.C., Han, J.-G., Ryoo, C.-R., Sun, C.-G., Jeon, M.S., Kim, G.-Y., Kim, Y.-B., Lee, H.-J., Shin, J.S., Lee, Y.-S. and Kee, W.-S. (2012) Active faults and seismic hazard map. NEMA, Seoul, p.882
26 Bursztyn, N., Pederson, J.L., Tressler, C., Mackley, R.D. and Mitchell, K.J. (2015) Rock strength along a fluvial transect of the Colorado Plateau-quantifying a fundamental control on geomorphology. Earth and Planetary Science Letters, v.429, p.90-100. doi: 10.1016/j.epsl.2015.07.042   DOI
27 Choi, J.H., Kim, J.W., Murray, A.S., Hong, D.G., Chang, H.W. and Cheong, C.S. (2009) OSL dating of marine terrace sediments on the southeastern coast of Korea with implications for Quaternary tectonics. Quaternary International, v.199, p.3-14. doi: 10.1016/j.quaint.2008.07.009   DOI