上海台重力固体潮观测结果(1978年4月—8月)的调和分析

吴庆鹏1, 于淑筠1, 周家庆2

吴庆鹏1, 于淑筠1, 周家庆2. 1980: 上海台重力固体潮观测结果(1978年4月—8月)的调和分析. 地震学报, 2(4): 413-424.
引用本文: 吴庆鹏1, 于淑筠1, 周家庆2. 1980: 上海台重力固体潮观测结果(1978年4月—8月)的调和分析. 地震学报, 2(4): 413-424.
WU QING-PENGup, YU SHU-JUNup, ZHOU JIA-QINGup2. 1980: HARMONIC ANALYSIS OF THE GRAVITY TIDAL DATA OBSERVED AT THE SHANGHAI STATION FROM APRIL TO AUGUST, 1978. Acta Seismologica Sinica, 2(4): 413-424.
Citation: WU QING-PENGup, YU SHU-JUNup, ZHOU JIA-QINGup2. 1980: HARMONIC ANALYSIS OF THE GRAVITY TIDAL DATA OBSERVED AT THE SHANGHAI STATION FROM APRIL TO AUGUST, 1978. Acta Seismologica Sinica, 2(4): 413-424.

上海台重力固体潮观测结果(1978年4月—8月)的调和分析

HARMONIC ANALYSIS OF THE GRAVITY TIDAL DATA OBSERVED AT THE SHANGHAI STATION FROM APRIL TO AUGUST, 1978

  • 摘要: 上海重力固体潮台站位于j=31.1°, =121.2°, 利用安装在山洞内的 GS-15 NO.227重力仪进行观测.山洞内年平均温度为18.8°C, 年温差为0.3℃.重力仪的记录格值为2.99微伽/毫米.利用勒卡拉兹方法和维涅第科夫方法对1978年4月—8月共142日的连续观测结果进行了调和分析.勒卡拉兹调和分析方法所得结果是: δ(M2)=1.142,  δ(K1)=1.164,  δ(O1)=1.192, δ(O1)—δ(K1)=0.028. 维涅第科夫调和分析方法所得结果是: δ(M2)=1.142, δ(K1)=1.166, δ(O1)=1.189, δ(O1)—δ(K1)=0.023. 此外, 在北京大学 DJS-18电子计算机上对勒卡拉兹调和分析方法和维涅第科夫调和分析方法进行了精度检验.检验结果是: 1)勒卡拉兹方法对M2S2N2K1O1五个主要波群来说, 确定的精度约为1%, 确定相位差的精度约为1. 2)维涅第科夫方法的精度与资料长度有关.一般说来, 资料越长, 精度越高.当资料长度取为90天时, 对M2S2K1O1, 五个波群来说, 确定δ的精度约为1%, 确定位相差的精度为0.5°.
    Abstract: The shanghai gravity tidal station is located at =31.1°N, =112.2°E, using a gravimeter type GS-15 No. 227 installed in a tunnel. The annual mean temperature in the tunnel is 18.8℃, the annual deviation of which is 0.3℃. The scale value of the gravimeter is 2.99 gal/mm. The data continuously observed from April to August in 1978 (142 days) were analysed by both the methods of Lecolazet and Venedikov. The results of analysis by the method of Lecolazet are as follows: δ(M2)= 1.142, δ(K1)= 1.164, δ(O1)= 1.192, δ(O1)-(K1)= 0.028, while that by the method of Venedikav are:  δ(M2)=1.142, δ(K1)=1.166, δ(O1)=1.189, δ(O1)-δ(K1)=0.023. Besides, the accuracy of methods of Lecolazet and Venedikov were tested on the electronic computer DJS-18 of the Peking university. The test results are as follows:(1) For method of Lecolazet, the accuracy of determination of gravimetric factor δ of the main waves M2, S2, N2, K1, O1, is about 1%, while the accuracy of determination of the phase difference of the same main wave is about 1.(2) For method of Venedikov, the accuracy of analysis depends on the length of the observational data, in general the longer the data, the more accurate the result. When the length of the data is 90 days, the accuracy of determination of the gravimetric factor δ  of the main waves M2, S2, N2, K1, O1 is about 1% the accuracy of determination of phase difference of the same main wave is about 0.5°.
  • 本目录中的地震参数来自“中国地震台站观测报告”(简称“月报”). 其中, 国内及邻区给出M≥4.7的事件, 全球给出M≥6.0的事件. “月报”由中国地震台网中心按月做出.

    本目录中的发震时刻采用协调世界时(UTC); 为了方便中国读者, 也给出北京时(BTC). 震中位置除给出经纬度外, 还给出参考地区名, 它仅用作查阅参考, 不包含任何政治意义; 还给出测定震源位置的台数(n)和标准偏差(SD).

    面波震级MS是用中周期宽频带SK地震仪记录, 采用北京台1965年面波震级公式MS=lg(AH/T)+1.66 lg(Δ)+3.5 (1°<Δ<130°)求得. AH是两水平分向最大面波位移的矢量合成位移. MS7是对763长周期地震仪记录, 采用国际上推荐的面波震级公式MS7=lg(AV/T)+1.66 lg(Δ)+3.3 (20°<Δ<160°)求得. AV是垂直向面波最大地动位移. mb是短周期体波震级, ML是近震震级, 为避免混乱, 震级之间一律不换算.

    表  1  中国及邻区地震目录(2015年9—10月, M≥4.7)
    Table  1.  Catalog of earthquakes within and near China (September--October, 2015, M≥4.7)
    编号 发 震 时 刻 地 理 坐 标 深度/km 震级 标准偏差(SD) 使用台数 (n) 地 区
    UTC BTC 日-时 纬度/°N 经度/°E M S M S7 ML mb
    月-日 时:分:秒
    1 09-0113:24:44.801-21 23.93121.54 105.25.15.24.72.3 96台湾岛
    2 0117:34:06.802-01 24.06122.41 214.74.64.44.42.0 76台湾岛
    31307:51:10.813-15 45.08 91.52 74.74.35.04.62.2 69新疆自治区北部
    41519:37:33.216-03 24.35121.90 105.65.55.75.01.6 98台湾岛
    51611:10:07.716-19 35.46 78.47 84.54.24.94.62.2 66克什米尔东部
    61613:08:57.116-21 24.25121.90 105.35.25.44.91.6101台湾岛
    710-1210:04:14.712-18 34.36 98.20 105.35.15.14.92.6 92青海省
    81211:14:46.812-19 22.47121.48 124.74.44.94.51.7 84台湾地区
    91902:17:36.119-10 24.93122.00 105.55.35.64.91.9 97台湾岛
    101905:42:13.119-13 24.97121.79 104.74.54.54.42.2 71台湾岛
    111907:20:16.719-15 24.98121.99 104.74.54.64.41.9 73台湾岛
    122105:58:21.021-13 44.68124.16 104.54.35.14.32.0 50中国东北部
    132618:11:23.827-02 30.17 98.01 64.64.44.44.72.3 58西藏自治区
    142820:12:08.529-04 27.55100.30 104.84.64.54.52.5 78云南省
    153011:26:39.430-19 25.04 99.44 105.04.75.14.72.5 84缅甸—中国边境地区
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    表  2  全球地震目录(2015年9—10月, M≥6.0)
    Table  2.  Catalog of earthquakes all over the world (September--October, 2015, M≥6.0)
    编号 发 震 时 刻 地 理 坐 标 深度/km 震级 标准偏差(SD) 使用台数 (n) 地 区
    UTC BTC 日-时 纬度/° 经度/° MS MS7 mb
    月-日 时:分:秒
    1 09-0115:25:06.601-23 31.19N141.88E 206.15.95.31.6 67本州以南地区
    2 0709:13:56.607-17 33.07S177.99W 296.25.95.41.7 74克马德克群岛以南地区
    3 0714:06:24.707-22 32.98S177.83W 126.05.75.31.9 84克马德克群岛以南地区
    4 0808:03:55.008-16 14.70N 93.90W 106.05.71.4 56墨西哥恰帕斯海岸近海
    51010:26:42.310-18 52.46N169.64W 186.05.95.61.1 98福克斯群岛
    61308:14:10.013-16 25.14N109.38W 106.86.75.52.6 64加利福尼亚湾
    71607:40:57.516-15 1.89N126.42E 506.16.05.71.3101马鲁古海峡
    81614:03:21.716-22 6.03S151.48E 206.05.85.31.6102新不列颠地区
    91622:54:31.517-06 31.59S 71.62W 208.38.31.3 80中智利海岸近海
    101623:18:40.317-07 31.45S 71.20W 306.86.82.3 91中智利海岸近海
    111701:41:10.217-09 31.10S 71.45W 406.46.41.4 88中智利海岸近海
    121703:55:17.517-11 31.10S 71.35W 406.56.51.9 67中智利海岸近海
    131704:10:27.717-12 31.55S 71.70W 306.96.92.8 94中智利海岸近海
    141809:10:50.018-17 32.25S 72.10W 256.36.32.3 93中智利海岸近海
    151815:59:42.518-23 15.30N 46.00W 106.26.02.5 53北大西洋海岭
    161912:52:19.719-20 32.25S 71.80W 106.46.41.4 99中智利海岸近海
    171913:08:56.519-21 30.89S 72.68W 106.36.03.1 37中智利海岸近海
    182105:39:32.621-13 31.55S 71.70W 206.26.11.2 92中智利海岸近海
    192117:39:57.422-01 31.65S 71.60W 206.86.81.3 95中智利海岸近海
    202415:53:28.824-23 0.55S131.25E 306.56.25.91.3 97西伊里安地区
    212415:56:53.824-23 9.81S160.70E 186.46.25.9 0.7 71所罗门群岛
    222602:51:15.726-10 30.80S 71.30W 306.36.31.2102中智利海岸近海
    2310-1100:58:29.011-08 54.60S135.80W 106.05.83.0 40南太平洋山系
    241405:43:04.014-13 48.88N156.25E 106.36.35.61.3 99千岛群岛
    251711:33:08.017-19 24.89S 64.31W 106.05.92.2 74阿根廷萨尔塔省
    262021:52:0.021-05 14.82S167.32E 1306.21.3 82瓦努阿图(新赫布里底)
    272609:09:31.226-17 36.59N 70.79E 2076.1 0.9 94兴都库什地区
    下载: 导出CSV 
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  • [1] I. M. Longman, Formulas for computing the tidal accelerations due to the Moon and the Sun. J. G. R., 64, 12, 1959.

    [2] Henry N. Pollack, Longman tidal formulas: resolution of horizontal components, J. G. R., 78, 14, 1973.

    [3] P. Melchior, J. T. Kuo and B. Ducarme, Earth tide gravity maps for western europe, Physics of the earth and planctary interiors, 13, 3, 1976.

    [4] P. Melchior, The tides of the planet earth 1978.
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  • 发布日期:  2011-08-31

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