• 제목/요약/키워드: 하각

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Geomorphic Evolution of Fluvial Terraces at Yeongdong.Yeongseo Streams in Gangwon Province, Korea (강원도 영동.영서 하천의 하안단구 지형 발달 - 내린천, 연곡천, 골지천, 오십천을 사례로)

  • Yoon, Soon-Ock;Hwang, Sang-Ill;Lee, Gwang-Ryul
    • Journal of the Korean Geographical Society
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    • v.42 no.3 s.120
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    • pp.388-404
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    • 2007
  • This study interprets evolution of fluvial terraces along the four Yeongdong- and Yeongseo streams such as Naerin River, Yeongok River, Golji River and Osip River, in Gangwon Province based on the tectonics. The results from the analyses of the distribution pattern of fluvial terraces and incision rates of rivers show distinctively the evidence as the axis of uplift by Taebaek Mountains, especially on the 4th, 5th and 6th terraces in upper reach of Osip River among the four streams. The axis of uplift extends to the zone of $30\sim40km$ in width as well as the divide. The difference of uplift between upper and middle reaches of Naerin River and total reach of Golji River wasn't found from the height from riverbed by the active uplifting along all reaches, estimated to be set in inner area of uplift zone. Incision rate of period between formation age of 2nd terrace and 1st terrace is calculated $0.13\sim0.22m/ka$, and incision rate of period between formation age of 1st terrace and Present is diversely calculated $0.17\sim0.27m/ka$ by the climatic discrepancy between the two periods. The incision rate of Yeongdong streams whose mouths reach to the sea level eroded actively more than Yeongseo streams in the uplift zone. And Yeongdong streams between formation age of 1th terrace and present appears to much higher than that of Yeongseo streams, due to active down-cutting in oder to balance against the sea level.

Concepts and Geomorphic Properties on Fluvial Terraces (하안단구의 개념과 지형 특성)

  • Lee, Gwang-Ryul
    • The Korean Journal of Quaternary Research
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    • v.25 no.1
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    • pp.1-13
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    • 2011
  • To reinterpret the meaning of fluvial terraces in the Quaternary researches, the concepts and geomorphic properties of fluvial terraces are reviewed. Fluvial terraces are the alluvial landform that was once river channel or floodplain by paleochannel flowed in elevated areas from the current river by active incision of rivers due to the climatic changes and/or uplifts. As fluvial terraces are the remnants of alluviums after incisions of rivers, the major factors influencing on the incisions are the falling of erosion base, increase of river discharge and distinct geomorphic phenomenon of river. While it is generally known that fluvial terraces deposits in the upper or middle reaches of large rivers were formed during glacial periods, the deposits may be formed at the various periods due to the diverse natural environments and geomorphic properties of specific rivers, because there have been numerous cases that the ages of fluvial terraces in the upper or middle reaches of large rivers in Korea and China can be correlated to the interglacial periods.

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Bilateral Elastofibroma Dorsi of the Shoulder - Case Report - (견갑부에 발생한 양측성 배부 탄성섬유종 - 증례 보고 -)

  • Lee, Woo-Seung;Kim, Taik-Seon;Kim, Young-Bae;Kang, Jong-Woo
    • Clinics in Shoulder and Elbow
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    • v.10 no.2
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    • pp.241-245
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    • 2007
  • We report a case of an 86-year-old man diagnosed with bilateral elastofibroma dorsi who was managed conservatively after a two year follow-up. An elastofibroma dorsi is a benign, slow-growing tumor that is most often located in the inferior periscapular area in elderly patients. It should be considered to differentiate them from other soft tissue tumors located at the inferior periscapular region. Increased awareness of these characteristics will decrease the incidence of a misdiagnosis of elastofibroma dorsi as a malignancy and avoid unnecessary surgery.

소양강 상류 하안단구의 지형면 특성과 퇴적물 분석

  • 이광률;윤순옥
    • Proceedings of the KGS Conference
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    • 2003.11a
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    • pp.3-7
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    • 2003
  • 북한강의 가장 큰 지류하천인 소양강은 발원지와 최상류부가 북한 지역이며, 상류부에서도 남한 지역은 휴전선에 접하여 군사지역이 많기 때문에 연구를 위한 접근과 활동이 쉽지 않다. 또한 하류부는 소양강댐으로 인해 하천 양안의 대부분이 소양호의 수면 아래에 수몰되어 있다. 이러한 이유로 인해 소양강을 대상으로 한 지리학 및 지형학적 연구 성과는 거의 없다. 소양강은 남한의 하천 유역분지 중 최북단에 위치하며 태백산맥에 바로 접하고 있어, 태백산맥 일대의 구조 운동으로 인해 활발한 하각(incision) 작용이 나타난다. (중략)

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The Effects of 24 weeks passive aquatic rehabilitation exercise on change muscular body type in Women with Osteoarthritis (24주간의 수동적 수중재활운동이 골관절염 여성의 근체형 변화에 미치는 영향)

  • Lee, Hye-Jin
    • Journal of the Korea Convergence Society
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    • v.8 no.7
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    • pp.349-356
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    • 2017
  • The purpose of this study is to provide guidelines for effective osteoarthritis passive aquatic rehabilitation program and form of exercise prescription through passive aquatic rehabilitation exercise for 24 weeks for women with osteoarthritis. The subjects of this study were the passive aquatic rehabilitation group (CG, n = 10) and the control group (AREG, n = 10) among the subjects who had been diagnosed with osteoarthritis by the K orthopedic surgeon and visited the hospital more than 3 times were selected. The results of this study showed that the change of shoulder height in the group was significantly different in passive aquatic rehabilitation exercise group (p <.001). There were significant differences in passive aquatic rehabilitation exercise group (p <.001) between the groups with inhaled sacpula patterns. Changes in the pelvis patterns inferior pattern of the left and right pelvis patterns in the group were significantly different in passive aquatic rehabilitation exercise group (p <.001).

Distribution of Stream Incision Rates in the Northern Part of the Taebaek Mountains (태백 산지 북부의 하천 하각률 분포)

  • Lee, Gwang-Ryul
    • Journal of The Geomorphological Association of Korea
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    • v.25 no.4
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    • pp.1-19
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    • 2018
  • This study tries to identify distributional characteristics of stream incision rates at 23 points in the northern part of the Taebaek Mountains. Soyang-gang, Naerin-cheon, Odae-cheon, Dong-gang and upper reaches of Okdong-cheon Rivers closed to the Range show higher incision rates and the rates clearly decrease with distance from the Range. Therefore, the incision process in the northern part of the Range has been greatly influenced by uplift around the Range, and the Sobaek Mountain Range seem to play a role in the incision process. Limestone areas show lower incision rates due to degradation of terrace surface by dissolution. This study suggests that local hydrological, geological and geomorphological conditions can be regarded as an important factor in stream incision rates, although stream incision rates are greatly influenced by regional uplift.

Characteristicsin Spatial Distribution of Incision and Uplift Based on the Highest Level Terraces Around the Taebaek Mountains (하안단구 최고위면에 기초한 태백 산지 일대의 하각과 융기의 공간 분포 특성)

  • Lee, Gwang-Ryul
    • Journal of The Geomorphological Association of Korea
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    • v.25 no.2
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    • pp.31-42
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    • 2018
  • This study analyzes the spatial distribution of the highest level terrace which can be regarded as an initial land surface before the uplift of the Taebaek Mountains and estimates spatial characteristics of the incision and uplift rates around the Mountains. The altitude above the riverbed of the 54 highest level terraces seems to be greatly influenced by the incision of large stream and their elevation shows a high correlation with the uplift of the Mountains. The elevation of the terraces in the north and middle parts decreases westward with a rate of 5~6 m/km and meets with the sea level at area 100~120 km apart from the Mountains. Therefore, it can be suggested that the west coast of Korea might have generally experienced subsidence during the Quaternary. The elevation of the terraces suggests that area with a direction of N-S or NNW-SSE from Yeoryang-myeon, Jeongseon-gun to Taebaek-si shows the highest uplift rate around the Mountains and area with a direction of N-S connecting Girin-myeon, Inje-gun and Pyeongchang-eup, Pyeongchang-gun also indicates a high uplift rate.

Surgical therapy of Sprengel deformity by Woodward procedure - A case report - (Woodward 술식을 이용한 Sprengel 변형의 수술적 치료 - 1예 보고 -)

  • Lee, Chae-Chil;Cho, Sung-Do;Kang, Byeong-Seong;Kim, Sang-Woo;Ko, Sang-Hun
    • Clinics in Shoulder and Elbow
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    • v.10 no.1
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    • pp.146-149
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    • 2007
  • Congenital undescended scapula is congenital structural abnormality which affects only one side usually. Scapula located higher than the usual and rotating deformity that inferior angle to medial side, superior angle to lateral side is common. This report presents one case of the surgical therapy of a sprengel deformity patient who passed an optimal operation period with age $3{\sim}7$years old, and includes brief review of the literature. 7 years old boy whose chief complaint was the limitation of left scapular-thoracic movement and he had an omovertebral bone bridge and periscapular muscle atrophy. There was improvement of motion ranges and cosmetic problems after surgical treatment.

Geomorphological Processes and Changes of Waterfalls formed by Channel Avulsion (하도 변위에 의한 폭포의 형성과 변화)

  • Lee, Gwang-Ryul
    • Journal of the Korean Geographical Society
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    • v.48 no.5
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    • pp.615-628
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    • 2013
  • The waterfall can be formed by difference between the height of up and down part in new channel, is formed by channel avulsion that rapidly changing of river channel course. This study described types and processes of waterfalls by channel avulsion, and analyzed rates and factors of waterfall recession, on object to 7 waterfalls in South Korea. Bulyeong falls at Uljin-gun, Yongchu falls at Yeongdeok-gun, Jikyeon falls at Yanggu-gun and Gwangpum falls at Uljin-gun are formed by natural incised meander cutoff. Samhyeongje falls at Taebaek-si and Guryong falls are formed by river capture processes, and Palbong falls at Chungju-si is formed by artificial channel cutting for farm land secured. The locations of waterfalls gradually moved to upstream over time by head erosion. The recession rates were measured by 3~4m/ka on Bulyeong falls, Yongchu falls, Jikyeon falls and Samhyeongje falls, to estimate of formation age. Recession rates of these 4 waterfalls were analyzed that have clearly positive correlations with drainage area, precipitation, corrosion and weathering capability of bedrock, and initial height of waterfall.

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