SEISMOLOGY AND GEOLOGY ›› 2009, Vol. 31 ›› Issue (4): 647-654.DOI: 10.3969/j.issn.0253-4967.2009.04.008

• Brief Report • Previous Articles     Next Articles

PRIMARY RESEARCH ON THE VOLCANIC ACTIVITY IN HAIKOU AREA

HU Jiu-chang, GUO Ming-rui, LIU Wei, ZHENG Zai-zhuang   

  1. Earthquake Administration of Hainan Province, Haikou 570203, China
  • Received:2009-07-13 Revised:2009-09-21 Online:2009-12-24 Published:2010-04-17

海口地区火山活动初步研究

胡久常, 郭明瑞, 刘伟, 郑在壮   

  1. 海南省地震局, 海口, 570203
  • 作者简介:胡久常,男,1966年生,1988年毕业于云南大学地球物理专业,1999年在北京大学获构造地质专业硕士学位,副研究员,曾从事地磁、地下流体、地震活动性及地震综合预报等研究,现从事火山地质、火山监测以及火山旅游资源开发利用研究工作,电话:0898-65347383,E-mail:hy5958@sohu.com.
  • 基金资助:
    “十一五”国家科技支撑计划项目(2006BAC01B040104)资助

Abstract: The Maanling-Leihuling volcanic cluster in Haikou area is one of the few dormant volcanic clusters in China.In the present study,according to the active stages division,deep magma chamber detection in this area,as well as the investigation of volcano types,scales,material composition and lava cover area,we evaluated the spatial-temporal and intensity features of volcanic activity in this region. Combined with the analysis on the observations of earthquake,geomagnetism,volumetric strain and geothermics in this volcanic region,we made the preliminary assessment on the activity state of deep magma.The results indicate that the last eruption in this Holocene volcano region occurred 4000 a BP,and the future volcanic activity may shift to the epicentre area of the 1605 M7.5 Qiongzhou earthquake in the Hainan Island.

Key words: volcanic activity, magnetotelluric detection, magma chamber, Haikou

摘要: 海口地区的马鞍岭-雷虎岭火山群是中国为数不多的几个休眠火山群之一。通过对区域火山活动期次划分、深部岩浆囊探测以及对火山类型、规模、物质组成和溶岩覆盖面积的分析,总结了海口地区火山活动的时、空、强特征。结合对火山区地震、地磁、体应变和地热等观测资料的分析,对火山区深部岩浆活动的状态进行了初步评估。研究认为海口全新世火山区最后一次火山喷发距今约4 000a左右,其现今火山活动已趋于平静,未来的火山活动可能向1605年琼州7.5级大地震震中区迁移。

关键词: 火山活动, 大地电磁探测, 岩浆囊, 海口

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