• Title/Summary/Keyword: Arc contraction

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The clinical observation of 5 cases of tinnitus with physical conditions and myology (耳鳴患者 5例에 대한 證例報告)

  • Kim, Hong-Jin;Park, Su-Yeon;Kim, Jong-Han;Choi, Jung-Hwa
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.14 no.2
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    • pp.146-153
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    • 2001
  • Clinical studies were done treated 5 cases of patients with tinnitus, who were treated at Dept. of oriental Oph. & Otolaryngology in the hospital of Dongshin university, Kwhang-Ju, Korea, 1 2001-2. 2001. The results were as follows 1. Explaining of ear ringing, two patients said that it's like twittering and each others variously said that it's like sounds of wind or crisply 2. The periods of a contraction are different to 4 years from 3 days, also the periods of a treatment are different to 8 weeks from 3 days. But it can't be a definition of a treatment period because of stopping treatments according to cases 3. Headache, dizziness, bradyacusia are chief symptoms being caused with tinnitus at the same times. Besides, general body weakness and syncope can he caused with tinnitus. 4. In a treatment by acupuncture, needles arc fixed at TE-17(翹風), G-31(風池), SI-19(聽宮), G-2(聽會) and kanjenggyuk(肝正格), Sinjenggyuk(腎正格) according to patients. 5. Chengshimyunjatang(淸心蓮子湯), Mihudodyungsikjatang(미후도등식장탕) can be prescribed according to physical conditions of patients. 6. After treating to becom 'Excellent' was two occasions, to become 'Good' was two occasion and to become 'Poor' was two occasions. So $60\%$ of became better them before.

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Measurement of 2D surface deformation on the Seguam volcano of Alaska using DInSAR Multi-track time-series techniques (DInSAR 멀티 트랙 시계열 기법을 이용한 알라스카 시구암 화산의 2차원 지표변위 관측)

  • Lee, Seul-Ki;Lee, Chang-Wook
    • Korean Journal of Remote Sensing
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    • v.30 no.6
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    • pp.719-730
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    • 2014
  • Small BAseline Subset (SBAS) technique using multi master interferograms can be effective to detect surface deformation in forest area. In this paper, The analysis reveals area of 2-dimension surface deformation at Seguam Island in Aleutian Arc., Alaska. We acquired ERS-1/2 data from track 201 and 473 datasets on Seguam Island from 1992 to 2008. This study analyze surface deformation applying Differential Interferometry Synthetic Aperture Radar (DInSAR) and SBAS time series method using two adjacent tracks. As a results, it was calculated that subsidence -1~2 cm in LOS direction and - 2~3 cm in vertical direction. The horizontal direction was repeated contraction and expansion. The observation of 2-dimension displacements explained the volcanic activity on Seguam island. Also, it is believed to be used for basic data to estimate movements of magma source.

Global Positioning System and Strengthening of Geodetic Network of Nepal

  • Adhikary, Krishna Raj;Mahara, Shree Prakash
    • Proceedings of the KSRS Conference
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    • 2003.11a
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    • pp.955-958
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    • 2003
  • Nepal is a country of mountains The higher order geodetic points were mostly established on the top of mountains and these points were used for the geodetic network extension. Lower order geodetic control networks were established at different times and used for the surveying and mapping activities of the country.. It has been found that the rate of convergence between north and south borders of Nepal to be 21${\pm}$2 mm each year and the rate translation of Kathmandu to 55${\pm}$3 mm/year to the plates. The most intense deformation in Nepal occurs along the belt of high mountains along its northern border res ulting in a strain contraction rate normal to the Himalayan Arc. This belt is approximately 40 km wide and extends into southern Tibet.( 13). Recently Survey Department of Nepal has lunched a program of strengthening the existing geodetic network of Nepal and re-observed the position of higher order geodetic points by using geodetic GPS receivers to evaluate their position and thus to define the precision of the control points once again. This paper describes the observation procedure and the adjustment results of the existing higher order control network of Nepal established in different time using different types of equipment and techniques; and highlights the observation procedure and the result obtained after the post processing of the GPS observation results. Attempt has been made to give the procedure and identify the methodology for the re observation of existing higher order geodetic points by using GPS receiver and post processing the observed data so that the existing higher order geodetic points are within the given accuracy standard.

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Neotectonic Crustal Deformation and Current Stress Field in the Korean Peninsula and Their Tectonic Implications: A Review (한반도 신기 지각변형과 현생 응력장 그리고 지구조적 의미: 논평)

  • Kim, Min-Cheol;Jung, Soohwan;Yoon, Sangwon;Jeong, Rae-Yoon;Song, Cheol Woo;Son, Moon
    • The Journal of the Petrological Society of Korea
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    • v.25 no.3
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    • pp.169-193
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    • 2016
  • In order to characterize the Neotectonic crustal deformation and current stress field in and around the Korean Peninsula and to interpret their tectonic implications, this paper synthetically analyzes the previous Quaternary fault and focal mechanism solution data and recent geotechnical in-situ stress data and examines the characteristics of crustal deformations and tectonic settings in and around East Asia after the Miocene. Most of the Quaternary fault outcrops in SE Korea occur along major inherited fault zones and show a NS-striking top-to-the-west thrust geometry, indicating that the faults were produced by local reactivation of appropriately oriented preexisting weaknesses under EW-trending pure compressional stress field. The focal mechanism solutions in and around the Korean Peninsula disclose that strike-slip faulting containing some reverse-slip component and reverse-slip faulting are significantly dominant on land and in sea area, respectively. The P-axes are horizontally clustered in ENE-WSW direction, whereas the T-axes are girdle-distributed in NNW direction. The geotechnical in-situ stress data in South Korea also indicate the ENE-trending maximum horizontal stress. The current crustal deformation in the Korean Peninsula is thus characterized by crustal contraction under regional ENE-WSW or E-W compression stress field. Based on the regional stress trajectories in and around East Asia, the current stress regime is interpreted to have resulted from the cooperation of westward shallow subduction of the Pacific Plate and collision of Indian and Eurasian continents, whereas the Philippine Sea plate have not a decisive effect on the stress-regime in the Korean Peninsula due to its high-angle subduction that resulted in dominant crust extension of the back-arc region. It is also interpreted that the Neotectonic crustal deformation and present-day tectonic setting of East Asia commenced with the change of the Pacific Plate motion during 5~3.2 Ma.