地震 ›› 2020, Vol. 40 ›› Issue (2): 177-187.doi: 10.12196/j.issn.1000-3274.2020.02.014
• • 上一篇
杨小林1,2, 危自根1, 杨锦玲3
收稿日期:
2019-08-14
出版日期:
2020-04-30
发布日期:
2020-04-24
作者简介:
杨小林(1983-), 男, 陕西汉中人, 博士研究生, 主要从事地震学、 固体潮和地壳动力学等研究。
基金资助:
YANG Xiao-lin1,2, WEI Zi-gen1, YANG Jin-ling3
Received:
2019-08-14
Online:
2020-04-30
Published:
2020-04-24
摘要: 乾陵台洞体应变自1981年观测以来, 其周年变化显著而规律, 但物理机制至今尚不清晰。 鉴于地表温度年变是引起地壳应变周年变化的一个重要影响因素, 本文采用含地形的热固耦合解析模型, 定量诊断了地表温度周年变化对洞体应变观测的影响。 结果表明, 地表温度周年变化5.4 K, 便可造成2.2×10-7的洞体热应变, 且理论热应变的变化形态和幅值大致能与观测数据吻合。 据此推定, 该台洞体应变周年变化主要是地表温度年变化所产生的热应变信号。 本文结果对该台热应变的合理改正和观测策略的科学优化, 具有重要的参考价值。
中图分类号:
杨小林, 危自根, 杨锦玲. 陕西乾陵台洞体应变周年变化的动力诊断[J]. 地震, 2020, 40(2): 177-187.
YANG Xiao-lin, WEI Zi-gen, YANG Jin-ling. A Diagnostic Study of Annual Strain Variations in Vault-housed Extensometers at the Geodynamic Observatory Qianling, Shaanxi Province[J]. EARTHQUAKE, 2020, 40(2): 177-187.
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