华蓥山断裂带地震活动特征分析

赵权; 乔波; 张健; 何杨; 聂大巍

doi:10.3969/j.issn.2096-7780.2021.10.003

华蓥山断裂带地震活动特征分析

doi: 10.3969/j.issn.2096-7780.2021.10.003

陕西省地震局，西安 710068

基金项目: 陕西省地震局2019年启航与创新基金课题（QC201930）资助。

详细信息

通讯作者:
赵权（1996-），男，助理工程师，主要从事地震监测预报工作。E-mail：939700263@qq.com

中图分类号: P315.5
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- 被引次数: 0
出版历程
- 收稿日期: 2021-08-17
- 修回日期: 2021-08-26
- 网络出版日期: 2021-11-10

Analysis on seismicity characteristics of Huayingshan fault zone

Shaanxi Earthquake Agency，Xi’an 710068，China

摘要

摘要: 通过对华蓥山断裂带5级以上地震以及现今中小地震活动性的分析，认识了该地区背景性和区域性的地震活动特征，认为该断裂带南段是地震活动的主体，尤其是宜宾地区地震活动较频繁，中段、北段次之。总结得到的5级以上地震的“平静—活跃”时段分布特征，3级以上地震的“弱活动—增强”规律，以及2019年长宁M_S6.0地震发生后应变能释放速率加速现象，均可为该地区5级以上地震预测预报提供参考依据。
- 华蓥山断裂带 /
- 地震活动性 /
- 历史地震 /
- 长宁M_S6.0地震
Abstract: Based on the analysis of earthquakes with M≥5 in Huayingshan fault zone and the present moderate and small seismicity, the background and regional seismicity characteristics in this area are discussed. It is considered that the southern section of the fault zone is the main seismicity area, especially in Yibin, followed by the middle and northern sections. The distribution characteristics of “quiet-active” period of earthquakes with M≥5, the law of “weak activity-enhancement” of earthquakes with M≥3, and the acceleration of strain energy release rate after Changning M_S6.0 earthquake in 2019 provide references for the prediction of earthquakes with M≥5 in this area.
- Huayingshan fault zone /
- seismicity /
- historical earthquake /
- Changning M_S6.0 earthquake

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图 1 华蓥山断裂带研究区域图（据冯梅^[6]修改）

Figure 1. Study area of Huayingshan fault zone（modified from Feng Mei^[6]）

下载: 全尺寸图片幻灯片

图 2 华蓥山断裂带5级以上地震M-t图和频度图

Figure 2. M-t diagram and frequency diagram of earthquakes with M≥5 in Huayingshan fault zone

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图 3 1610年以来华蓥山断裂带5级以上地震分布

Figure 3. Distribution of earthquakes with M≥5 in Huayingshan fault zone since 1610

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图 4 1970年以来华蓥山断裂带2级以上小震应变能释放曲线

Figure 4. Strain energy release curve of small earthquakes with M≥2 in Huayingshan fault zone since 1970

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图 5 华蓥山断裂带3级以上地震3月累计频度

Figure 5. Cumulative frequency of earthquakes with M≥3 in Huayingshan fault zone in March

下载: 全尺寸图片幻灯片

表 1 华蓥山断裂带内各断裂带特征（据秦万成^[3]）

Table 1. Characteristics of each fault zone in Huayingshan fault zone（according to Qin Wancheng^[3]）

名称	长度/km	走向	倾向	断倾角	性质	活动时代
高顶山—大田坎断裂带	50	NE	SE	30°—70°	逆断层	Qp2
天府断裂带	10	NE	NE	70°—80°	逆断层	Qp2
中梁山断裂带	10		—	—	逆断层	Qp2
西山—青山岭断裂带	200	NE	—	30°—60°	逆断层	Qp3

下载: 导出CSV

表 2 华蓥山断裂带1610—2020年5级以上地震统计表

Table 2. Statistical table of earthquakes with M≥5 in Huayingshan fault zone from 1610 to 2020

序号	发震时间	震中位置		震级M	震源深度/km
序号	年-月-日	纬度/°N	经度/°E	震级M	震源深度/km
1	1610-02-03	28.50°	104.50°	5.5
2	1892-02-10	28.90°	105.00°	5.0
3	1896-02-14	29.30°	104.90°	5.7
4	1905-11-08	29.40°	104.70°	5.0
5	1936-09-25	28.70°	105.10°	5.0
6	1940-11-07	29.50°	104.50°	5.6	35
7	1954-10-24	29.40°	104.80°	5.0
8	1985-03-29	29.41°	105.00°	5.2	7
9	1989-11-20	29.92°	106.88°	5.5	5
10	1996-02-28	29.03°	104.63°	5.7
11	1997-08-13	29.50°	105.48°	5.2
12	2008-05-12	29.98°	105.92°	5.4
13	2010-01-31	30.30°	105.70°	5.0	10
14	2010-09-10	29.40°	105.50°	5.1	7
15	2013-04-25	28.40°	104.90°	5.2	4
16	2016-12-27	29.47°	105.60°	5.2	10
17	2017-01-28	28.09°	104.72°	5.3	11
18	2017-05-04	28.19°	104.87°	5.3	10
19	2018-12-16	28.24°	104.95°	5.9	12
20	2019-06-17	28.34°	104.90°	6.0	16
21	2019-06-17	28.43°	104.77°	5.1	16
22	2019-06-18	28.37°	104.89°	5.3	17
23	2019-06-22	28.43°	104.77°	5.4	10
24	2019-07-04	28.41°	104.74°	5.6	8
25	2019-09-08	29.55°	104.79°	5.4	10
26	2019-12-18	29.59°	104.82°	5.2	14

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参考文献(6)

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