CAJ | 학술논문

海口地区的马鞍岭一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.
해구지구적마안령일뢰호령화산군시중국위수불다적궤개휴면화산군지일.통과대구역화산활동기차화분、심부암장낭탐측이급대화산류형、규모、물질조성화용암복개면적적분석,총결료해구지구화산활동적시、공、강특정.결합대화산구지진、지자、체응변화지열등관측자료적분석,대화산구심부암장활동적상태진행료초보평고.연구인위해구전신세화산구최후일차화산분발거금약4 000a좌우,기현금화산활동이추우평정,미래적화산활동가능향1605년경주7.5급대지진진중구천이.
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.