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ZHUO XIUBONG, CHEN GUANGTONG. 1983: ON THE FOCAL MECHANISMS OF EARTHQUAKES AND REGIONAL STRESS FIELD OF THE FUJIAN-TAIWAN REGION. Acta Seismologica Sinica, 5(4): 397-411.
Citation: ZHUO XIUBONG, CHEN GUANGTONG. 1983: ON THE FOCAL MECHANISMS OF EARTHQUAKES AND REGIONAL STRESS FIELD OF THE FUJIAN-TAIWAN REGION. Acta Seismologica Sinica, 5(4): 397-411.
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ON THE FOCAL MECHANISMS OF EARTHQUAKES AND REGIONAL STRESS FIELD OF THE FUJIAN-TAIWAN REGION

  • Fujian Seismological Bureau

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  • Published Date: August 31, 2011
    Graphical Abstract
    • Abstract
  • In this paper, the focal mechanisms of the earthquakes of M 6, occurred in Taiwan Province and on the sea east of it, from 1933 to 1969 have been critically collected and compiled. In addition, the focal mechanisms of the earthquakes M 6 occurred in Taiwan and Fujian provinces, and in the Strait of Taiwan from 1970 to 1978 and of the earthquake of Magnitude 8 of 1604 are reexamined. After analyzing all these focal mechanism data of the two provinces, it is pointed out that: (1) the focal plane solutions obtained are closely related to the recent crustal movement at depth; (2) most of the directions of principal axis of compressive stress are perpendicular to the major fault zone; (3) on the sea east of Taiwan province, earthquakes moderate in size form three parallel seismic gaps elliptical in shape. Around the gaps, about 83% of the earthquakes of magnitude 6.0-6.9 have their major P axis nearly at right angles to the periphery of the gaps on which most earthquakes of magnitudes equal or greater than 7 occurred; (4) taking the Bashi strait as the center, facing Fujian province, the stress field consists of fan-like pattern toward NW.
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    • References (1)
  • [1] 徐明同,台湾的地震活动性及一些有关问题,中国科学技术情报研究所,1972.

    [2] Francis T. Wu, Recent tectonic of Taiwan, J Phys. Earth., 26. Suppl. S265~S299.

    [3] Mamoru Katsumata and Lynn R. Sykes, Seismicity and tectonics of the Western Pacific: lzu——Mariana——Caroline and Ryukyu——Taiwan region, Journal of Geophysical Research. 74, 25, 1969.

    [4] 张裕明,我国台湾岛的地震构造特征,地震地质,1, 4, 1979.

    [5] T. Wu. Francis, Focal mechanisms and tectonic in the vicinity of Taiwan, Bulletin of the Seismological Society of America, 60, 6, 2045——2056. 1970.

    [6] Keiiti Aki, 25 Earthquake generating stress in Japan for the years 1961 to 1963, obtained by smoothing the first motion radiation patterns, Bulletin of the Earthq:rake research institute 44, 447——471, 1966.

    [7] 邓起东等,中国构造应力场特征及其与板块运动的关系,地震地质,1, 1, 1979,

    [8] V. C. Juan, Tectonic evolution of Taiwan, Tectonophysics, 26, 197——212, 1975.

    [9] 国际地震资料中心汇编(即I. S. C).

    [10] 中国科学院地球物理研究所,中国强地震简目,地图出版社,1976.

    [11] 中国科学院地震工作委员会历史组,中国地展资料年表,科学出版社,1956.

    [12] 福建省地震目录.

    [13] 《地震报告》,台湾省气象所,1951.

    [14] 吕新民,恒春地方烈震调查报告,台湾省气象所,1959,

    [15] 张丽旭等,1946年12月5日台南地震,台湾地质调查所汇刊第1号.

    [16] 徐明同等,台南嘉义地方烈震调查报告,台湾省气象所,1969.

    [1] 徐明同,台湾的地震活动性及一些有关问题,中国科学技术情报研究所,1972.

    [2] Francis T. Wu, Recent tectonic of Taiwan, J Phys. Earth., 26. Suppl. S265~S299.

    [3] Mamoru Katsumata and Lynn R. Sykes, Seismicity and tectonics of the Western Pacific: lzu——Mariana——Caroline and Ryukyu——Taiwan region, Journal of Geophysical Research. 74, 25, 1969.

    [4] 张裕明,我国台湾岛的地震构造特征,地震地质,1, 4, 1979.

    [5] T. Wu. Francis, Focal mechanisms and tectonic in the vicinity of Taiwan, Bulletin of the Seismological Society of America, 60, 6, 2045——2056. 1970.

    [6] Keiiti Aki, 25 Earthquake generating stress in Japan for the years 1961 to 1963, obtained by smoothing the first motion radiation patterns, Bulletin of the Earthq:rake research institute 44, 447——471, 1966.

    [7] 邓起东等,中国构造应力场特征及其与板块运动的关系,地震地质,1, 1, 1979,

    [8] V. C. Juan, Tectonic evolution of Taiwan, Tectonophysics, 26, 197——212, 1975.

    [9] 国际地震资料中心汇编(即I. S. C).

    [10] 中国科学院地球物理研究所,中国强地震简目,地图出版社,1976.

    [11] 中国科学院地震工作委员会历史组,中国地展资料年表,科学出版社,1956.

    [12] 福建省地震目录.

    [13] 《地震报告》,台湾省气象所,1951.

    [14] 吕新民,恒春地方烈震调查报告,台湾省气象所,1959,

    [15] 张丽旭等,1946年12月5日台南地震,台湾地质调查所汇刊第1号.

    [16] 徐明同等,台南嘉义地方烈震调查报告,台湾省气象所,1969.
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