• The Korean Journal of Petroleum Geology
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• v.9 no.1_2 s.10
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• pp.24-39
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• 2001

Prospecting for energy and mineral resources is essential kind of public fundamentals that manage the nation's economy. Most explorations in the past were concentrated in the simple structural traps in relatively shallow depth. Due to their vast exploitation, recent history has shown that the emphasis in explorations has steadily shifted toward the subtle stratigraphic traps in deeper level. Increasing exploration for the subtle stratigraphic traps in deeper level requires precise correlation and assessment of deeply buried strata in the basin. However, the descriptive stratigraphic principles used for evaluation of the simple structural traps are limited to delineate the subtle stratigraphic traps in deeper depth. As this occurs, it is imperative to establish a new stratigrtaphic paradigm that allows a more sophisticated understanding on the basin stratigraphy. This study provides an exemplary application of integrated stratigraphic approach to defining basin stratigraphy of the Middle Ordovician Taebacksan Basin and the Cretaceous South Yellow Sea Basin, Korea. The integrated stratigraphic approach gives much better insight to unravel the stratigraphic response to tectonic evolution of the basins, which can be utilized for enhancing the efficiency of resources exploration and development in the basins. Thus, the integrated stratigraphic approach should be considered as a new stratigraphic norm that can improve the probability of success in any type of resources exploration and development project.

• Korean Journal of Agricultural and Forest Meteorology
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• v.4 no.2
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• pp.86-94
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• 2002

This study was carried out to identify the relationship between naturally introduced vegetation on the abandoned coal mine lands and the surrounding forest, and to select the indigenous tree species for the revegetation of the real mine lands in Taeback, Kangwon Province, Korea. The apparent species in the surrounding forest of Sododong were 9 species of tree layer, 13 species of subtree layer, 23 species of shrub layer and 23 species of herb layer, respectively. The dominant species in Sarijae were 6 species of tree layer, 15 species of subtree layer, 31 species of shrub layer and 25 species of herb layer, respectively. The plant species in the abandoned real mine land were 31 species in Sododong and 30 species in Sarijae, respectively. The number of plant species in the abandoned coal mine land was smaller than the surrounding forest. The common species of the coal mine lands and the surrounding forest were 6 species(Betula schimidtii etc.) in Sododong and 4 species(B. costata etc.) in Sarijae. It was considered that the species in the coal mine lands introduced from the species of top layer in the surrounding forest. Especially, B. costata in Sarijae showed the edge effect which regenerates the vegetative community from the boundary area of coal mine land and surrounding forest. Natural revegetation in Sododong was also progressing by the invasion of tree species in surrounding forest, such as B. schmidtii. Consequently, natural revegetation in the disturbed coal mine lands may be related to the species composition of the surrounding forest.

• Journal of the Korean earth science society
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• v.21 no.3
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• pp.258-275
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• 2000

The purpose of this study is to investigate diurnal variations of snowstorm occurred along the East Coast of the Korean Peninsula. The snowstorm which occurred on 5${\sim}$7 January 1997 have been analyzed. The pressure patterns were analyzed through surface and upper-air chart(850hPa). Diurnal variations of four areas, i. e. Youngdong, Mt. Taebaek, Youngseo and Kyungbuk regions were analyzed through wind direction and speed, cloud amounts, surface temperature, dewpoint temperature, relative humidity and sea level pressure. And snowfall amounts over four areas were analyzed through regional distribution, daily and temporal variations. The snowfall which occurred on January 5 was caused by the weak low pressure which is located in Kyusu region of Japan. The snowfall of January 6 occurred due to the Siberian high's expansion and instability. And northeasterly wind is one factor of the snowstorm which occurred in Mt. Taebaek region on 7 January. Heavy snowfall was caused by westerly wind but easterly wind occurred weak snowfall in Youngdong area. The precipitation of Kyungbuk region(eapecially, Pohang) was less than that of Youngdong region because the air mass which was not modified had influence on Kyungbuk region on 6${\sim}$7 January, 1997.

• Research in Plant Disease
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• v.18 no.3
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• pp.225-230
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• 2012

Bacteriophages of Pectobacterium carotovorum subsp. carotovorum which causes soft rot on diverse vegetables had been isolated from 6 major Chinese cabbage cultivation areas in Korea. In order to isolate bacteriophages, total 15 different strains of P. carotovorum subsp. carotovorum isolated from nation-wide of Korea had been used as a host. When we tested 30 different soil samples individually from Pyeongchang and Taebaek with 15 different strains as a host, Taebek soil samples showed bacteriophage plaques with almost all different indicator strains but Pyeongchang soil samples showed plaques only with P. carotovorum subsp. carotovorum Pcc2 and Pcc3 strains. Especially, P. carotovorum subsp. carotovorum Pcc3 strain was able to produce plaques with almost all soil samples. Thus, this strain can be used as an indicator strain for P. carotovorum subsp. carotovorum bacteriophage screening. Electron microscope observation revealed P. carotovorum subsp. carotovorum bacteriophages isolated in Korea were belonged to three different families, Myoviridae, Siphoviridae and Podoviridae in order Caudovirales.

• 한국방재학회:학술대회논문집
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• 2011.02a
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• pp.193-193
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• 2011

본 연구에서는 산불발생인자들에 대한 정보를 각각의 요인별로 집적화하고 체계화시킴으로써 산불예방활동의 기초자료로 활용할 뿐만 아니라 산불발생 시, 산불의 거동을 예측하기 위한 자료로 활용하고자 하였다. 발생인자는 크게 연료 및 기상조건 관련 인자와 열적특성 관련 인자로 분류하고 연료 및 기상조건 관련 인자는 수종별, 부위별, 지역별, 고도별, 월별 산림연료들의 구성 요인들에 대해서 분석하였다. 수종별로는 생강나무, 초피나무, 조록싸리, 산초, 개암, 청미래, 고추나무, 철쭉, 조릿대, 털진달래 등 관목류 10개 수종과 김의털, 방아풀, 주름조개풀, 칡, 엉겅퀴 등 초본류 5개 수종 그리고 소나무, 잣나무, 리기다소나무, 해송, 구상나무, 주목 등 6개의 침엽수 및 굴참나무, 떡갈나무, 신갈나무, 갈참나무, 졸참나무, 상수리, 산개벚나무, 고채목, 개서어나무, 굴거리나무, 서어나무, 산벚나무, 때죽나무, 당단풍나무, 단풍나무 등 15개의 활엽수로 구성된 교목류를 대상으로 분석하였다. 부위별로는 생엽, 낙엽, 가지, 수피, 솔방울 등으로 구분하여 분석을 수행했으며, 지역별 구성은 강원(삼척/태백산), 경북(응봉산), 경기(용문산), 충북(월악산), 충남(계룡산), 전북(덕유산), 전남(월출산), 부산(금정산), 제주(한라산) 등 9개 지역을 대상으로 선정하였다. 고도별로는 강원도에 소재하고 있는 태백산을 중심으로 소나무와 신갈나무 생엽을 대상으로 900m, 1000m, 1100m, 1200m, 1300m, 1400m, 1500m 고도를 선정하여 분석을 수행하였다. 월별 분석데이터는 소나무 생엽의 경우, 2008년 6월부터 2010년 11월까지 매월 분석을 수행하였으며, 굴참나무 생엽의 경우에는 2008년부터 2010년까지 매년 6월부터 10월까지 생엽을 채취할 수 있는 기간 동안 분석을 수행하였다. 또한, 열적특성 관련 인자로는 착화특성(무염착화온도, 발염착화시간, 소염시간, 화염지속시간), 발열특성(총열방출량, 평균열방출률), 발연특성(총연기방출량, 최대연기밀도, 최대밀도시간) 등을 고찰하였다. 이와 같은 결과들은 산불발생인자 DB구축으로 부터 산불발생 위험도 및 동태예측의 기본 자료로 활용할 수 있을 뿐만 아니라 지역별 연료별 산림연료의 열적특성 DB로 부터 산불발생시 산불 위험도에 대한 기술정립과 응용성을 향상시킬 수 있을 것으로 사료된다. 이외에도 산림연료 종류별 열적특성을 결과를 토대로 문화재보존지역과 같이 문화적 가치가 높은 시설이나 주유소, 가스 충전소 등의 위험 시설에 대한 효과적인 보호를 위한 대처 방안을 사전에 준비할 수 있어 산불 피해에 대한 국민의 불안감을 줄일 수 있을 것으로 생각된다.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2018.10a
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• pp.44-44
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• 2018

경상북도 봉화군에 위치한 각화산(1,177m)은 태백산맥에서 소백산맥으로 갈라지는 기점을 이루는 산으로 구령산, 청옥산, 옥석산 등과 함께 백두대간 일대의 중요한 산으로 인식된다. 특히 각화산은 조선왕조실록을 보관했던 태백산 사고지터(사적 제 348호)를 품고 있는 역사적인 장소이기도 하다. 본 연구는 각화산 일대 관속식물의 분포상을 파악하고자 2017년 5월부터 2018년 9월까지 진행되었다. 연구 결과 조사지 내 관속식물은 92과 291속 413종 4아종 38변종 6품종으로 총 461분류군이 확인되었다. 이는 경상북도 관속식물 1,684분류군(Korea National Arboretum, 2016)의 27.4%, 한반도 관속식물 4,499분류군(Korea National Arboretum, 2018; Http://www.nature.go.kr/kpni/)의 10.2%에 해당되는 것으로 분석되었다. 각화산 일대의 주요 식물 가운데 한국특산식물은 12분류군(할미밀망, 진범, 처녀치마, 지리대사초 등)이 확인되었고, 산림청 지정 희귀식물은 VU등급(꼬리진달래, 노랑무늬붓꽃) 2분류군, LC등급(너도바람꽃, 쥐방울덩굴, 도깨비부채) 3분류군으로 총 5분류군의 희귀식물이 분포하는 것으로 조사되었다. 또한, 식물구계학적 특정식물 IV등급 5분류군, III등급 13분류군, II등급 21분류군, I 등급 25분류군이 확인되었고, 외래식물은 총 24분류군으로 도시화지수(%) 6.8%, 귀화율은 5.2%에 해당되는 것으로 분석되었다. 조사된 식물의 유용성 분석 결과, 식용식물 348분류군(75.5%), 섬유용식물 1분류군(0.2%), 약용식물 기분류군(15.4%), 관상용식물 18분류군(3.9%), 목초용식물 102분류군(22.1%) 목재용식물 14분류군(3.0%) 등으로 확인되었다. 본 연구 결과물은 각화산의 식물 현황을 제시함과 동시에 생태축으로 연결된 백두대간 일대의 효율적인 관리 및 보전 방안을 마련하기 위한 기초자료로 활용 될 것이라 기대한다.

• Journal of the Korean Geographical Society
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• v.49 no.1
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• pp.1-17
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• 2014

This study estimates geomorphological processes of fluvial terraces by uplifts and bedrock features, by the analyses of topography, distribution, formation age and incision rate of fluvial terraces using Gwang-cheon River in Uljin, Namdae-cheon River in Pyeonghae and Osip-cheon River in Yeongdeok located in the southern Taebaek Mountain Range. The tectonic and climatic terraces I in the upper reaches of Gwang-cheon River with an altitude from riverbed of 9~12m indicate the formation age of MIS 2 with a incision rate of 0.40m/ka. However, the tectonic and climatic terraces I in the upper reaches of Osip-cheon River with an altitude from riverbed of 7~10m show the formation age of MIS 3 with an incision rate of 0.10m/ka. These results suggest that the uplift rate in the Gwang-cheon River basin is likely to be higher than that in the Osip-cheon River basin. Unlike the lower reaches of Osip-cheon River, the thalassostatic terraces are not found in the lower reaches of Gwang-cheon River, because the basin has low maintainable ability of landforms in river valley due to high uplift rate and bedrock properties resistant to weathering and erosion. On the other hand, the lowest tectonic and climatic terraces in the study areas indicate different formative ages and the terraces during the cooling stage in interglacial as well as during interstadial are also found. Therefore, this study suggests that chronological method for fluvial terrace by the previous developmental model of climatic terrace should be reconsidered.

• Korean Journal of Agricultural Science
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• v.16 no.2
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• pp.129-137
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• 1989

This experiment was undertaken to clarify derivation of resistance of Tongil type of rice varieties to rice blast in Korea and to classify Tongil type of rice varieties on the basis of their rice blast reactions in th blast nursery test. 1. The resistance of Tongil, Josaengtongil, Yeongnamjosaeng, Hwanggeumbyeo, Honamjosaeng, Noupung, Milyang 21, Milyang 22, Milyang 23, Raekyung, Manseogbyeo, Yongmunbyeo and Yongjubyeo to rice blast was derived from IR 8 or IR 24. 2. The resistance of Milyang 20, Nampungbyeo and Milyang 42, and Samseongbyeo, Seogwangbyeo, Pungsanbyeo and Shingwangbyeo to the rice blast was derived from IR 946 and IR 1539, and IR 1545, respectively. 3. The resistance of Palgwangbyeo, Sujeongbyeo, Hangangchalbyeo, Baegunchalbyeo, Samgangbyeo and Weonpungbyeo, and Taebaegbyeo and Chupungbyeo, and Kayabyeo to the rice blast was derived from IR 2061(IR 29), IR 747 and IR 32, respectively. 4. Cheongcheongbyeo, and Jungweonbyeo and Namyeongbyeo, and Changseongbyeo to the rice blast was derived from IR 2035, IR 5533, and HR 2797 and HR 1671, respectively. 5. Tongil type of rice varieties was classified into Tongil group, Milyang 30 group, Baegyangbyeo group and Taebaegbyeo group.

• Korean Journal of Plant Resources
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• v.27 no.5
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• pp.501-517
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• 2014

This study was carried out to elucidate the distribution of vascular plants and their usefulness of Mt. Myeonsan (1,245 m) and Myobong (1,168 m) in Gangwon-do and Gyeongsangbuk-do. The vascular plants that were collected 15 times from April 2012 to October 2013 consisted a total of 551 taxa; 96 families, 314 genera, 489 species, 3 subspecies, 54 varieties and 6 forms. The plants that are specially noteworthy are 17 taxa of Korean endemic plants, 2 taxa of Critical Endangered Species (CR), 3 taxa of Endangered Species (EN) and 12 taxa of Vulnerable Species (VU) in rare plants as categorized by the Korean Forest Service. Furthermore, V, IV, III degrees of floristic regional indicator plants as categorized by the Korean Ministry of Environment included 2 taxa, 22 taxa and 26 taxa, respectively. Among them, edible, pasture, medicinal, ornamental, timber, dye, fiber, industrial and unknown usefulness plants included 215 taxa, 184 taxa, 163 taxa, 59 taxa, 17 taxa, 6 taxa, 5 taxa, 5 taxa and 138 taxa, respectively. In addition, 25 taxa of naturalized plants were observed.

• Geophysics and Geophysical Exploration
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• v.20 no.3
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• pp.137-145
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• 2017

High-grade limestone applied to various chemical industries is abundant within upper Pungchon formation in Taebaeksan basin, South Korea. Geophysical exploration is one of the most efficient methods to investigate subsurface geological structure in an extensive area. Since the geophysical exploration for the high-grade limestone has rarely been conducted in Korea, its appropriate strategy has not been set up yet. In this study, we focused on to suggest the reasonable strategy and accumulate geophysical databases which are essential for interpreting geophysical images by characterizing laboratory physical properties of in-situ rocks. Hence, rocks were obtained from drilled cores consisting of lower Hwajeol formation, Pungchon formation, and dykes in Jeongseon area, Gangwon province. Geophysical laboratory experiments and petrography of the rocks were conducted. Since susceptibility values of the rocks in Pungchon Formation were obviously lower than those of upper Hwajeol and dykes, it is considered that the lithological boundaries could be distinguished by magnetic survey. In addition, electrical properties of the rocks in middle Pungchon formation were relatively different compared with those of upper/lower Pungchon formations. Thus, induced polarization is shown to be able to detect the high-grade limestone in upper Pungchon formation.