Modelling eruption cycles and decay of mud volcanoes
Modelling eruption cycles and decay of mud volcanoes
复制标题
DOI：
10.1016/j.marpetgeo.2009.03.003
复制
发表时间：
2009-11
影响因子：
4.2
通讯作者：
Anna Zoporowski;S. A. Miller
中科院分区：
文献类型：
--
作者：
Anna Zoporowski;S. A. Miller
最近关于泥火山的喷发行为及其激活机制的争论，特别是印度尼西亚的LUSI火山爆发，导致了巨大的商业和文化损失。泥火山的数值模拟，其中很少存在，可以提供洞察喷发行为，并有助于灾害评估。在本文中，我们提出了一个简单的模型来描述流体逃逸从地下水库通过管道，挤出作为一个泥火山在表面。控制方程的振荡行为的结果，我们研究了围岩的流变特性和泥浆的流体特性的变化对挤出动力学的影响。我们专注于了解长期喷发行为，流动周期和衰变因素。模型结果可用于根据对泥浆储层和管道的假设来估计排放速率和挤出体积，或者相反，根据排放速率来估计储层或管道特性。
Recent debates about the eruptive behavior of mud volcanoes and their activation mechanisms have been driven particularly by the LUSI eruption in Indonesia that resulted in huge commercial and cultural damages. Numerical modeling of mud volcanoes, of which few exist, can provide insight into eruptive behavior and contribute to hazard evaluation. In this paper, we present a simple model to describe fluid escape from an underground reservoir through a conduit, extruded as a mud volcano at the surface. The governing equations result in oscillatory behavior, and we study the influence of changes in rheological properties of surrounding rock and fluid characteristics of the mud on extrusion dynamics. We focus on understanding long-term eruption behavior, flow cycles, and decay factors. Model results can be used to estimate the discharge rates and extruded volume from assumptions on the mud reservoir and conduit, or conversely, the reservoir or conduit properties from discharge rates.