간행물
한국지구과학회지 KCI 등재 The Journal of The Korean Earth Science Society
- 발행기관 한국지구과학회
- 자료유형 학술지
- 간기 격월간
- ISSN 1225-6692 (Print)2287-4518 (Online)
- 수록기간 1979 ~ 2024
- 주제분류 자연과학 > 지구과학 자연과학 분류의 다른 간행물
- 십진분류KDC 450DDC 550
권호리스트/논문검색
제3권 제1호 (1982년 12월) 8건
1.
1982.12
구독 인증기관 무료, 개인회원 유료
4,000원
2.
1982.12
구독 인증기관 무료, 개인회원 유료
During the period from August 18 to August 19, 1972, a heavy rainfall was observed in Kyeonggi district. The total amount of rainfall over that period exceeded 450㎜. Some synoptic features of the heavy rainfall were studied by the use of synoptic data. The notable feature was the synoptic situation which built up a deep convectively unstable layer over Korea peninsula. The observed low level jet stream seems to be formed by the heavy rainfall activity.
4,000원
3.
1982.12
구독 인증기관 무료, 개인회원 유료
This study focused to reveal mineralogical and petrochemical properties and the stratigraphy of the volcanic rocks along the downstream of the Hantan River in Choongaryong Rift Valley. The geological sequences of this area are as follows: The basement of this area consists of Precambrian metasedimentary rocks of the Yeoncheon System. The Biotite Granodiorite of Jurassic age intruded into the Yeoncheon System in the eastern side of the area. Several small exposures of the basalt of post-Jurassic age, which was maned as $quot;Tongjae Basalt$quot;occur dispersely along the west slope of the valley. A conglomerate formation overlay the eroded surface of Tongjae Basalt and contains rounded and angular pebbles and is unconformable overlain by Lapilli Lithic Tuff. A basalt outcrop exposed as small an exposure near Jangtanri creek and intruded the Lithic Tuff, maned as : Jangtanri Basalt.$quot; Granite porphyry dikes intruded into the Lithic Tuff in Tongjae area. An Alkali Loivine Basalt of the Cenozoic Era with 3∼11 different eruptions flowed on the surfaces of the abouve mentioned Precambian metasedimentary rocks, Biotite Granodiorite, Lithic Tuff and Unconsolidated in the valley and formed marrow plateaus. The Alkali Basalt consists mainly of olivine, diopside, hypersthene and labradorite, and is called in this study as $quot;Jeongog Basalt$quot;. the age of the last flow is estimated as late Pleistocene or early Holocene.
4,500원
4.
1982.12
구독 인증기관 무료, 개인회원 유료
4,000원
5.
1982.12
구독 인증기관 무료, 개인회원 유료
An implementation study was conducted by analyzing the science curricula, surveying of the classroom activities, and the contents of the current science text books. Through this investigation, it was found that exist a discrepancies between the science curricula and current text books, the contents of the text books are just listing of informations and too hard compare the level of students activities. Furthermore, the current text books were prepared under the laboratory oriented approaching methods by emphasizing the inquiring processes. However, (at present. situations) the most schools could not carry out the objects of the current text books due to lack of instruments, laboratory facilities, and laboratory work books.
4,000원
6.
1982.12
구독 인증기관 무료, 개인회원 유료
This article is prepared as training aids for students visiting Mt. Sorak. The basement rocks are composed of Precambrian granitic gneiss and porphyroblastic gneiss found in the vicinity of the highest peaks, and Mesozoic sedimentary rocks covered them with unconformity. Granites covering most of this area intruded these rocks as batholith. From the view point of geology, the general view of Mt. Sorak appears to be resulted from the intrusion of granites and the accompanied differential erosion due to the textural and structural differences of rocks. Especially the sheer cliffs seem to be formed by the erosion along joint planes, and the sequent columnar valley by the joint cross and the litholigic change.
4,000원
7.
1982.12
구독 인증기관 무료, 개인회원 유료
The national wide gravity survey to establish gravity values for the base reference stations in Korea was initiated by the U.S. Army. The Division of Geodesy, U.S. Army Map Service Far East (DG, USAMSFE) conducted two base station surveys in 1961 and 1964, and measured gravity values at 15 stations throughout Korea. Professor Woollard also observed 3 gravity base stations in 1964 as a part of the International Gravity Measurements. All of these surveys were tied directly to DG Base of USAMSFE in Tokyo and Tachikawa Air Force Base stations. GMIK (presently Korea Institute of Energy and Resources) also made 10 base station measurements in 1971, which are tied to USAMSFE base stations established in the previous survey. In a broader sense, all of these measurements are related to Potsdam system whose value is now recognized to be too large by about 14 mgals. In accordance with the International Gravity Standardization Net 1971 (IGSN 71), adopted and recommended by the International Union of Geodesy and Geophysics, GMIK, in cooperation with Institute of Geological Sciences of England, measured gravity values at 15 base reference stations which are tied to IGSN 71 primary base stations in London and Kyoto. The results of this survey are generally lower by about 13.8 mgals than previous values. On the other hand, the National Geography Institute established a fundamental national gravity base reference station in the back yard of the Institute's building and determined the gravity value, which is tied to the IGSN 71 value of the base reference station located in Tokyo. The measurements were made twice in 1975 and 1980 with the cooperation of Japan Geophysical Survey Institute. NGI also established four auxilliary gravity base reference stations in 1980. The author recently measured the gravity difference between two base reference stations located in Korea Institute of Energy and Resources and National Geography Institute and found the measured value is different by more than 1 mgal to that computed from the gravity values adopted by two Institutes. Therefore it is recommended to conduct a more detailed crosscheck to establish consistent base reference values throughout the country.
4,000원
8.
1982.12
구독 인증기관 무료, 개인회원 유료
Human activities have gradually damaged the land-water ecosystem, and natural processes, in turn, produce grievous losses to human society. Numerous environmental laws have been enacted to safeguard people and their investments from pollution and other forms of air, water, and land degradation. There have also been massive environmental changes in the twentieth century. These have been produced by a combination of urbanization, population growth, production of new machines rapidly increasing fuel consumption. An important objective of environmental research work and study should be directed to determine which types of plant construction and resource extraction methods minimize damages to the land-water ecosystem. This objective must be linked to attempts to understand and find solutions to the environmental problems that exist, whether rfatural or the result of human activities.
4,000원
