• Geophysics and Geophysical Exploration
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• v.23 no.4
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• pp.267-267
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• 2020

• 한국지구물리탐사학회:학술대회논문집
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• 2010.10a
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• pp.181-184
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• 2010

• Geophysics and Geophysical Exploration
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• v.8 no.1
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• pp.92-96
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• 2005

Comprehensive field surveys, including various hydrogeological and geophysical methods, were carried out to appraise the applicability of those methods to a leakage problem at the Sandong earth fill dam in southwestern Korea. The methods applied in the fold site were tracer tests, monitoring of drawdown and leakage with discharge of reservoir water, electrical resistivity surveys using the dipole-dipole array, self-potential (SP), and temperature logging methods. The leakage pattern in the reservoir wall was demonstrated by hydrogeological methods and was further clarified by the geophysical surveys. Leakage turned out to be through the right abutment of the reservoir wall. In this study, we conformed that the electrical resistivity method is effective in detecting the zones favorable to leakage, and SP methods are useful for delineating the leakage pathways themselves, because leaks generate strong streaming-potential anomalies.

• 한국지구물리탐사학회:학술대회논문집
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• 2009.10a
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• pp.16-19
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• 2009

Recently, CO2 geologic storage (geologic sequestration) has been concerned as one of methodologies for reducing greenhouse gas. We expect that geophysical approach plays an important role in the site selection, characterization, and monitoring during CO2 injection or post-injection. Especially we believe that monitoring and verification technologies such as surface and borehole geophysical methods are an important part of making CO2 geologic storage an acceptable method.

• 한국지구물리탐사학회:학술대회논문집
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• 2001.09a
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• pp.90-93
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• 2001

Various soil remedial technologies have been developed and main effort has been to overcome the limiting factors. Major factors were the geophysical characteristics, especially hydraulic, electrical, and heat conductivities. In this paper, I have reviewed the remedial technologies depending on those. Only with comprehensive understanding and information on those characteristics, selection of the best remedial method can be possible.

• 한국지구물리탐사학회:학술대회논문집
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• 2008.10a
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• pp.7-11
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• 2008

기상청은 2008년 현재 전국에 107개의 디지털 지진관측망을 운영하고 있다. 또한 지진관측 유관기관인 한국지질자원연구원, 한국원자력안전기술원, 한전전력연구원에서 각 기관의 목적에 맞게 지진관측소를 운영하고 있으며, 이들 지진관측자료의 공유를 목적으로 실시간으로 통합하는 통합지진과측망(KISS)을 2000년에 구축하여 지진분석에 쓰이고 있다. 한반도의 지진발생 현황은 1978년부터 2007년까지 776회로 약 26회/년 정도가 발생하였다. 최근 중국의 쓰촨성과 일본 이와테 지진으로 지진 및 지진예지에 대한 국민적 관심이 대두되고 있다. 한반도에서도 큰 규모의 지진이 발생할 가능성에 대비해 기상청에서는 지진관측망과 지진예지 목적의 지구물리관측망을 구축 중에 있다. 지구물리관측망은 INTERMAGNET에서 등록할 수 있는 수준의 관측소를 목표로 인위적인 자기장의 교란이 적은 지질학적인 요소들을 고려한 후보지 선정을 위하여 지구자기업무에 관한 기획연구(서만철 2007)를 수행 하였다. 그 결과 국가 중심 지구자기관측소의 위치는 충남 공주시와 청양군 사이에 있는 칠갑산 지역이 가장 좋은 후보지라고 제안하여 청양지역을 주변으로 국유림 및 군유지를 조사하여 충남 청양군 장평면 화산리 산 36-2번지에 후보지를 선정하여 최적의 입지 조건을 검증하기 위해 인천교육대학교의 이휘순 교수 MT탐사를 수행 주변의 배경잡음을 측정하여 양호한 조건을 갖춘 것으로 확인되었다. 지구자기관측소에는 Fluxgate Magnetometer 1대, Total field Magnetometer 1대, Theodolite 1대, SP(Self Potential) Monitoring system 1대와 장비들을 보호 할 수 있는 관측소가 설치될 예정이다

• Journal of the Korean Geophysical Society
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• v.4 no.2
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• pp.133-142
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• 2001

The rapid expansion of Internet foundation made it possible to handle various data and information with ease and swift. The HTML is widely used in this circumstace to transfer information via Internet. Howeverm the HTML has limit to describe all aspect of data and information, and the XML is proposed for the replacement. The XML is Internet language that supplies more diverse methods to classify and describe the contents. In this stuydy, some advantages to process geophysical data by XML is descussed and teleseismic data recorded in KMA were gransformed to the XML information.

• Geophysics and Geophysical Exploration
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• v.2 no.2
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• pp.96-103
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• 1999

Most of saline water inousions have been diagnosed by geophysical or geochemical approach independently. The objective of this study is to provide the effective method to detect the saline water intrusion on the ground water in the vicinity of seashore using these two methods. Schulumberger sounding, frequency domain electromagnetic sounding and geochemical analysis of ground water were carried out to explore saline water intrusion. Schulumberger sounding was implemented in dry surface condition before irrigation water was introduced into the field, while electromagnetic sounding was carried out in wet ground condition after the irrigation. The purpose of duplicated measurements on the equivalent spot at different times was to investigate the variation of anomaly zone depending on the amount of ground water. It was possible to discriminate the anomalous zone due to high water saturation from the low electric resistivity zone by high salt concentrations through this way. For the verification of the geophysical result, the ground water samples in the study area were collected and analysed at the 23 points near the measuring spots. The groundwater at the spot nearest to the sea water intrusion identified by geophysical method indicates higher salinity than the standard limit concentration for agricultural irrigation water (250 mg/1). Isotope analysis of $D({^2}H)$ vs. is ${^18}O$ and PCA analysis were used to discriminate the anthropogenic pollution from those of high salinity from sea water intrusion.

• 한국지구물리탐사학회:학술대회논문집
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• 2004.06a
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• pp.312-316
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• 2004

• 한국지구물리탐사학회:학술대회논문집
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• 2004.06a
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• pp.296-301
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• 2004