琼北火山监测与活动性研究进展  

PROGRESS IN MONITORING AND RESEARCH OF ACTIVITY OF VOLCANOES IN NORTHERN HAINAN ISLAND

作　　者：郭明瑞[1] 于红梅[2,3] 胡久常 王锡娇[1] 郑在壮[1] 王桂丹[1] GUO Ming-rui;YU Hong-mei;HU Jiu-chang;WANG Xi-jiao;ZHENG Zai-zhuang;WANG Gui-dan(Hainan Earthquake Agency,Haikou 570203,China;National Observation and Research Station of Jilin Changbaishan Volcano,Institute of Geology,China Earthquake Administration,Beijing 100029,China;Key Laboratory of Seismic and Volcanic Hazards,China Earthquake Administration,Beijing 100029,China)

机构地区：[1]海南省地震局,海口570203 [2]中国地震局地质研究所,吉林长白山火山国家野外科学观测研究站,北京100029 [3]中国地震局地震与火山灾害重点实验室,北京100029

出　　处：《地震地质》2022年第5期1128-1141,共14页Seismology and Geology

基　　金：吉林长白山火山国家野外科学观测研究站研究课题(NORSCBS20-10)资助。

摘　　要：海南琼北地区是中国第四纪以来火山活动频繁的地区之一,其中马鞍岭-雷虎岭火山群的喷发活动持续至全新世,且距海口市仅15km,属于典型的城市火山。为掌握琼北火山的活动性,预防突发的火山灾害,海南省地震局于2007年组建形成火山监测台网,至今运行良好并积累了大量观测数据。文中收集整理琼北火山区过去23a(含建台前区域地震台网数据)以来的测震、形变、流体与地磁观测数据,并采用多种方法对数据进行分析研究,发现火山活动与地质构造之间存在紧密联系,并根据琼北火山的喷发特征和活动背景,提出了未来火山监测台网的发展方向。文中对琼北火山进行了系统性的总结与回顾,为琼北火山区的规划建设和灾害预测提供了科学依据,并为后续火山监测的发展提供了技术支撑。Volcanic eruption is a manifestation of crustal movement.The upper mantle inside the earth is filled with hot magma.Under great pressure,the magma will break out of the earth’s crust from the weak place along the volcanic channel and the volcanic throat.Volcanic eruption is the most intense display of the earth’s internal heat energy on the surface.Some activity characteristics and signals will be generated before volcanic eruption.Some countries have successfully predicted volcanic eruptions,and avoided a large number of casualties and economic losses.Volcano monitoring is the basis for accurate volcano prediction and an effective method to reduce volcanic disasters.Volcano monitoring is to monitor the activity state of underground magma through various observation methods,and to capture the precursors of volcanic eruption.The northern Hainan Island(also called Qiongbei)is one of the areas with frequent volcanic activity since the Quaternary in China.A total of 10 phases and 59 eruptions have occurred in Qiongbei area,forming more than 100 volcanoes of different sizes and shapes.Lavas with an area of about 4000km2 are distributed in seven cities and counties of Haikou,Wenchang,Qionghai,Ding’an,Chengmai,Lingao and Danzhou,and Yangpu Economic Development Zone.More than 30 volcanoes with different sizes in the Shishan and Yongxing areas of the Quaternary volcanic area are arranged in a north-west direction,forming a typical central volcanic group,and the distribution of this volcanic group is controlled by the Changliu-Xiangou fault zone.The volcanic activity of the Ma’anling-Leihuling volcanic group(the largest)continued until the Holocene.This volcano is only 15km away from Haikou City,and is a typical urban volcano with potential eruption risk.Once it erupts,it will inevitably cause widespread public concern.In order to acquaint us with the activity of Qiongbei volcano and prevent sudden volcanic disasters,a volcano monitoring network was set up in 2007 by the Hainan Earthquake Agency,which has been runn

关 键 词：琼北火山区 火山活动性 火山监测 测震台网 灾害预测 

分 类 号：P317.6[天文地球—固体地球物理学]