ANALYSIS OF VARIATIONS OF INDOOR BASE LINE AT ANQIU STATION
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摘要: 对安丘地震台16年室内基线的研究结果表明:室内基线观测精度可达到2×10-7。室内基线的变化大部分是室温引起的地表热形变,其量值达7×10-5。地壳活动的信息仅为5×10-6。因而降低和消除地表热形变是提高室内基线应用价值的关键。Abstract: The research result of the indoor base line of Anqiu seismographic station in 16 years shows that the measurement precision of the indoor base line can reach 2×10-7. A large part of the indoor base line variation is cursed by ground surface thermal deformation, with its value reaching 7×10-5. The information of seismic activity is only about 5×10-6, Thus decreasing and eliminating the ground surface thermal deformation is the key to improve the applied value of indoor base line.
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Key words:
- base line measurement /
- geotemperature anomaly /
- crustal deformation
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