郯庐断裂带中南段跨断层短水准形变特征初步分析

葛计划; 曹志磊; 孙军; 卢叶啸; 于磊; 程玲; 陶媛; 孙伯乐; 陆立; 周自强

doi:10.19987/j.dzkxjz.2022-078

郯庐断裂带中南段跨断层短水准形变特征初步分析

doi: 10.19987/j.dzkxjz.2022-078

葛计划^{1, 2, ,},
曹志磊^{1, 2},
孙军¹,
卢叶啸¹,
于磊¹,
程玲³,
陶媛¹,
孙伯乐¹,
陆立¹,
周自强¹

1.
安徽省地震局，安徽合肥 230031
2.
蒙城国家地球物理野外观测站，安徽蒙城 233527
3.
肥西县应急管理局，安徽肥西 231200

基金项目: 蒙城国家地球物理野外站联合开放基金项目（MENGO-202110）和安徽省地震青年基金项目（20210609）联合资助。

详细信息

通讯作者:
葛计划（1982-），男，工程师，主要从事地形变与观测资料分析研究。E-mail：272807878@qq.com

中图分类号: P315.63
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- 文章访问数: 174
- HTML全文浏览量: 69
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出版历程
- 收稿日期: 2022-05-07
- 录用日期: 2022-07-23
- 网络出版日期: 2022-08-08

Preliminary analysis on the characteristics of short leveling deformation across faults in the central and southern part of Tan-Lu fault zone

Ge Jihua^{1, 2
, ,},
Cao Zhilei^{1, 2},
Sun Jun¹,
Lu Yexiao¹,
Yu Lei¹,
Cheng Ling³,
Tao Yuan¹,
Sun Bole¹,
Lu Li¹,
Zhou Ziqiang¹

1.
Anhui Earthquake Agency, Anhui Hefei 230031, China
2.
Anhui Mengcheng National Geophysical Observatory, Anhui Mengcheng 233527, China
3.
Emergency Bureau of Feixi County, Anhui Feixi 231200, China

摘要

摘要: 通过对郯庐断裂带中南段近20年的跨断层定点水准测量资料的处理与分析，初步总结了郯庐断裂带中南段断层垂直形变的时空活动特征。2000—2019年郯庐断裂带中南段断层垂直形变活动整体水平不高，平均合成速率为0.19 mm/a，但具有明显的分时活动特征。2000—2010年槐柏—宿迁段活动相对较大，新沂—临沂段活动相对较小，宿迁和新沂之间存在相对闭锁段；2011—2019年整体活动速率有所降低，但安丘测点活动速率相对2000—2011年增大明显。郯庐断裂带中南段的活动特征和近20年来该地区地震活动情况存在一定的对应关系。
- 形变特征 /
- 郯庐断裂带 /
- 形变速率 /
- 断层蠕变
Abstract: Based on the processing and analysis of the fixed-point horizontal deformation data across the fault in the middle and southern part of the Tan-Lu fault zone in recent 20 years, this paper preliminarily analyzes the vertical deformation characteristics of the middle and southern section of the Tan-Lu fault. The research shows that the overall activity level of the middle and southern part of the Tan-Lu fault zone is not high, and the average combining rate is 0.19 mm/a. However, it has obvious characteristics of time-sharing activities: from 2000 to 2010, the activity in Huaibai-Suqian section was large, while the activity in Xinyi-Linyi section was relatively small. There was a relatively closed section between Suqian and Xinyi; The overall activity rate has decreased from 2011 to 2019, but the activity rate of Anqiu station has increased significantly compared with that of 2000 to 2011. There is a certain correspondence between the activitycharacteristics of the fault zone and the seismicity of the region in the past 20 years.
- deformation character /
- Tan-Lu fault zone /
- deformation rate /
- fault creep

HTML全文

图 1 跨郯庐水准测线及M_L≥4震中分布图（2000—2019）

Figure 1. Leveling line across Tan-Lu and distribution map of M_L≥4 epicenters (2000—2019)

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图 2 宿迁短水准观测场地示意图

Figure 2. Schematic diagram of Suqian short leveling observation site

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图 3 宿迁台各测段高差月均值与月速率图

Figure 3. Monthly mean value and monthly rate of elevation difference in each survey section of Suqian station

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图 4 临沂短水准观测场地示意图

Figure 4. Schematic diagram of Linyi short leveling observation site

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图 5 临沂台各测段高差月均值与月速率图

Figure 5. Monthly mean value and monthly rate of elevation difference in each survey section of Linyi station

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图 6 新沂短水准观测场地示意图

Figure 6. Schematic diagram of Xinyi short leveling observation site

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图 7 新沂台、合肥台、安丘台测段高差月均值与月速率图

Figure 7. Monthly mean value and monthly rate of elevation difference in each survey section of Xinyi station, Hefei station and Anqiu station

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图 8 合肥短水准观测场地示意图

Figure 8. Schematic diagram of Hefei short leveling observation site

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图 9 安丘短水准观测场地示意图

Figure 9. Schematic diagram of Anqiu short leveling observation site

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图 10 郯庐断裂带中南段定点水准年速率图（2000—2019）

Figure 10. Annual rate chart of fixed-point leveling in the middle and southern part of Tan-Lu fault zone (2000—2019)

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图 11 跨郯庐断裂短水准测线相对活动量（2001—2019）

Figure 11. The relative activity level of Tan-Lu fault zone fixed-point cross fault line (2001—2019)

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