摘要
基于ALOSPALSAR影像，利用小基线集合成孔径雷达干涉测量技术，提取了位于印度尼西亚巴厘岛的Agung火山2007～2009年的地表形变时间序列，并基于Mogi点源模型和竖直椭球体模型反演了岩浆房参数。结果表明：Agung火山地区大气延迟相位干扰较严重，Agung火山在2007～2009年发生了较明显的隆升形变，且与时间呈正相关。竖直椭球体模型能够更好地拟合InSAR形变场，岩浆房位于火山体下方约5km处。SBAS—InSAR结果表明，应加强跟踪监测Agung火山的潜在喷发危险性。
On the basis of ALOS PALSAR images, we extracted the time series of surface deformation field of Agung Volcano in Bali Island, Indonesia during 2007 and 2009 by SBAS-InSAR technique, and inversed magma chamber parameters based on the Mogi point source and vertical spheroid models. The results showed that： the interference of atmospheric delayed phase was severe in Agung Volcano area. Agtmg Volcano showed the up- ward deformation characteristic from 2007 to 2009, and kept positive correlation with time. Deformation model- ing indicated that the deformation obtained by vertical spheroid model matched very well with the InSAR-derived deformation, and the magma chamber was located at about 5 km beneath the volcanic edifice. From the deform- ation results derived by SBAS-InSAR, we should monitor the potential eruption of Agung Volcano.
出处
《地震研究》
CSCD
北大核心
2013年第3期313-318,407,共6页
Journal of Seismological Research
基金
地震行业科研专项中国综合地球物理场观测-鄂尔多斯周缘地区(201208009)
山西省青年科技研究基金(2011021024-1)联合资助
