标题： 深部岩浆输送对爆炸性火山喷发规模和演化的影响 显示英文标题

标题： Deep magma transport control on the size and evolution of explosive volcanic eruptions

摘要： 爆炸喷发是地表表现的动力学过程，涉及岩浆从岩浆聚集的地下区域的转移。 来自不同储库的成分不同的岩浆参与的证据正在不断增加，有无数案例。 然而，喷发动力学模型只考虑了管道系统的最上部，忽略了与岩浆储存深层区域的联系。 在这里，我们表明不同岩浆储存区域之间的相互连接程度和效率在很大程度上控制着喷发的规模、其演变、喷发终止的原因，以及最终对周围环境的影响。 我们的数值模拟首先再现了地球上爆炸喷发的大小-强度关系，并解释了喷发质量流量的观察到的可变演变。 由于深层岩浆相互连接在目前的成像能力下难以接近，我们的结果意味着基于火山不安期间的观测和测量来预测喷发规模存在局限性。 显示英文摘要

摘要： Explosive eruptions are the surface manifestation of dynamics that involve transfer of magma from the underground regions of magma accumulation. Evidence of the involvement of compositionally different magmas from different reservoirs is continuously increasing to countless cases. Yet, models of eruption dynamics consider only the uppermost portion of the plumbing system, neglecting connections to deeper regions of magma storage. Here we show that the extent and efficiency of the interconnections between different magma storage regions largely control the size of the eruptions, their evolution, the causes of their termination, and ultimately their impact on the surrounding environment. Our numerical simulations first reproduce the magnitude-intensity relationship observed for explosive eruptions on Earth and explain the observed variable evolutions of eruption mass flow rates. Because deep magmatic interconnections are largely inaccessible to present-day imaging capabilities, our results imply a limit to eruption size forecasts based on observations and measurements during volcanic unrest.