不同赋存形式H2映震特征及机理分析

doi:10.12196/j.issn.1000-3274.2024.03.010

摘要/Abstract

摘要： 乌鲁木齐04泉水中溶解气H₂和阿克苏断层土壤气H₂监测点均属新疆地震监测预报评估A类。本文以二者为研究对象, 分析不同赋存形式H₂浓度的动态变化特征; 利用R值评分方法和Molchan图表法对H₂浓度进行映震效能检验, 并提取异常指标; 探讨和分析不同赋存形式H₂的映震机理。结论如下: 乌鲁木齐04泉水中溶解气H₂浓度受气象因素影响较小, 而阿克苏断层土壤气H₂浓度受气压和气温双重影响, 其中以气温影响为主。 R值评分方法和Molchan图表法检验显示, 两个监测点均具有较好的短期预测效能。 H₂浓度测项具有较好的短临预测效能, 这得益于H₂的物理化学性质稳定且迁移速度极快。

关键词: 地震监测, H₂, 影响因素, 映震效能, 异常指标, 机理

Abstract: Both dissolved H₂ in the Urumqi 04 spring water and the H₂ in the soil of the Aksu fault belong to the A-type monitoring points of Xinjiang earthquake monitoring, prediction, and evaluation. This paper takes the two as research objects, and analyzes the dynamic variation characteristics of H₂ concentration in different occurrence forms. The R-value scoring method and Molchan chart method were used to test the earthquake-reflecting efficiency of H₂ concentration and to extract abnormal indexes. The mechanism of H₂ reflecting earthquakes in different occurrence forms is discussed and analyzed. The conclusions are as follows: The concentration of dissolved H₂ in the Urumqi 04 spring water is less affected by meteorological factors, while the concentration of H₂ in the soil of the Aksu fault is influenced by both air pressure and air temperature, mainly by air temperature. The R-value scoring method and Molchan chart method showed that both monitoring points had good short-term prediction efficiency. The good short-term prediction performance of H₂ measurement is due to the stable physical and chemical properties of H₂ and its extremely fast migration speed.

Key words: Earthquake monitoring, H₂, Influencing factors, Earthquake reflecting efficiency, Abnormal index, Mechanism

中图分类号:

P315.7

李娜, 向阳, 李新勇, 汪成国. 不同赋存形式H₂映震特征及机理分析[J]. 地震, 2024, 44(3): 138-155.

LI Na, XIANG Yang, LI Xin-yong, WANG Cheng-guo. Reflecting Earthquake Characteristics and Mechanism Analysis of Different Occurrence Forms of H₂[J]. EARTHQUAKE, 2024, 44(3): 138-155.

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不同赋存形式H₂映震特征及机理分析

Reflecting Earthquake Characteristics and Mechanism Analysis of Different Occurrence Forms of H₂

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