不同赋存形式H_(2)映震特征及机理分析  

Reflecting Earthquake Characteristics and Mechanism Analysis of Different Occurrence Forms of H_(2)

作　　者：李娜[1] 向阳 李新勇[1] 汪成国[1] LI Na;XIANG Yang;LI Xin-yong;WANG Cheng-guo(Earthquake Agency of Xinjiang Uygur Autonomous Region,Urumqi 830o1l,China;China University of Mining and Technology,Beijing 100083,China)

机构地区：[1]新疆维吾尔自治区地震局,新疆乌鲁木齐830011 [2]中国矿业大学,北京100083

出　　处：《地震》2024年第3期138-155,共18页Earthquake

基　　金：新疆北天山地震构造带地球化学特征与震情强化跟踪技术研究项目(731034)。

摘　　要：乌鲁木齐04泉水中溶解气H_(2)和阿克苏断层土壤气H_(2)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H_(2)浓度的动态变化特征;利用R值评分方法和Molchan图表法对H_(2)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H_(2)的映震机理。结论如下:乌鲁木齐04泉水中溶解气H_(2)浓度受气象因素影响较小,而阿克苏断层土壤气H_(2)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。H_(2)浓度测项具有较好的短临预测效能,这得益于H_(2)的物理化学性质稳定且迁移速度极快。Both dissolved H_(2) 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,pre-diction,and evaluation.This paper takes the two as research objects,and analyzes the dy-namic variation characteristics of H_(2) concentration in different occurrence forms.The R-value scoring method and Molchan chart method were used to test the earthquake-reflec-ting efficiency of H_(2) concentration and to extract abnormal indexes.The mechanism of H_(2) reflecting earthquakes in different occurrence forms is discussed and analyzed.The conclu-sions are as follows:The concentration of dissolved H_(2) in the Urumqi 04 spring water is less affected by meteorological factors,while the concentration of H,in the soil of the Ak-su 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 perform-ance of H2 measurement is due to the stable physical and chemical properties of H2 and its extremely fast migration speed.

关 键 词：地震监测 H_(2) 影响因素 映震效能 异常指标 机理 

分 类 号：P315.7[天文地球—地震学]