Study on the influence of tropical cyclone to the deformation observation data of Wuzhishan Station
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摘要: 通过对五指山台形变观测资料产生影响的热带气旋信息统计及数据分析发现：该台的倾斜类仪器的热带气旋响应水平明显高于应变类仪器，特别是VP垂直摆的响应能力最强，SSY伸缩仪的风扰响应水平最弱；不同气旋引起的震颤波扰动信号的形态、振幅、频率、扰动强度不同；同一气旋对倾斜类仪器VP垂直摆北南向响应幅度最大，最大扰动强度幅度量级为20×10−3″/ms左右，持续时间与气旋的生命周期有关。Abstract: According to the statistics and data analysis of the tropical cyclone data which have influence to the deformation observation data at Wuzhishan Station, it is found that the response level of the tilt type instrument is obviously higher than that of the strain type instrument. In particular, the response of the VP vertical pendulum is the strongest, and the wind disturbance response of the SSY extensometer is the weakest. The maximum amplitude of the VP vertical pendulum is about 20×10−3″/ms, and the duration is related to the life cycle of the cyclone.
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Key words:
- tropical cyclone /
- inclinometer /
- extensometer /
- tremor signal
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图 1 五指山台站构造位置及仪器布设图
Figure 1. Structure location and instrument layout of Wuzhishan Station
图 2 台风Sonca对五指山台不同仪器的频谱响应特征
Figure 2. Spectrum characteristics of different instruments at Wuzhishan Station caused by typhoon Sonca
图 3 台风Sarika对不同仪器的震颤波信号 （左图为水管仪，右图为垂直摆）
Figure 3. The tremor signals of typhoon Sarika to different instruments (water pipe instrument at left and vertical pendulum at right)
图 4 台风Doksuir对不同仪器震颤波信号 （左图为水管仪，右图为垂直摆）
Figure 4. The tremor signals of typhoon Doksuir to different instruments (water pipe instrument at left and vertical pendulum at right)
表 1 不同台风对定点形变仪器的干扰特征
Table 1. Disturbance characteristics of fixed-point deformation instruments caused by different typhoons
台风
名称最大
风力
/级登陆点与
台站距离
/kmDSQ
-NSDSQ
-EWSSY
-NSSSY
-EWVP
-NSVP
-EW曲线形
态变化变幅
/10−3″曲线形
态变化变幅
/10−3″曲线形
态变化变幅
/10−8″曲线形
态变化变幅
/10−8″曲线形
态变化变幅
/10−3″曲线形
态变化变幅
/10−3″Kujira 10 98 无 36.0 无 38.6 无 280 无 276 粗、畸变 23.2 粗、畸变 32.2 Mujigae 15 260 无 36.4 无 46.4 无 432 无 430 粗、畸变 20.2 粗、畸变 36.8 Sarika 14 97 无 100 无 76.0 无 466 无 460 纺锥形 34.1 纺锤形 54.0 Sonca 9 325 无 36.9 无 42.0 无 293 无 316 无 27.1 无 41.0 Doksuir 14 347 粗、畸变 55.8 无 44.0 无 340 无 418 纺锤形 27.8 纺锤形 62.4 Khanun 14 200 无 48.2 无 56.2 无 406 无 324 粗、畸变 28.0 粗、畸变 55.2 
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表 2 不同热带气旋与定点形变仪器震颤波信号的主频对比(单位：赫兹)
Table 2. Comparison of main frequency of tremor signals between different tropical cyclones and fixed-point deformation instruments （unit：Hz）
台风名称 信号主频 DSQ-NS DSQ-EW SSY-NS SSY-EW VP-NS VP-EW Kujira 0.06 0.04 0.18 0.20 0.10 0.08 Mujigae 0.06 0.08 0.22 0.25 0.12 0.10 Sarika 0.12 0.08 0.18 0.28 0.20 0.08 Sonca 0.20 0.10 0.30 0.28 0.32 0.20 Doksuir 0.34 0.08 0.18 0.25 0.08 0.14 Khanun 0.20 0.08 0.18 0.22 0.20 0.08
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